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1687 行
60 KiB
1687 行
60 KiB
// Copyright 2007, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Google Mock - a framework for writing C++ mock classes.
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//
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// The ACTION* family of macros can be used in a namespace scope to
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// define custom actions easily. The syntax:
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//
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// ACTION(name) { statements; }
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//
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// will define an action with the given name that executes the
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// statements. The value returned by the statements will be used as
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// the return value of the action. Inside the statements, you can
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// refer to the K-th (0-based) argument of the mock function by
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// 'argK', and refer to its type by 'argK_type'. For example:
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//
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// ACTION(IncrementArg1) {
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// arg1_type temp = arg1;
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// return ++(*temp);
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// }
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//
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// allows you to write
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//
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// ...WillOnce(IncrementArg1());
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//
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// You can also refer to the entire argument tuple and its type by
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// 'args' and 'args_type', and refer to the mock function type and its
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// return type by 'function_type' and 'return_type'.
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//
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// Note that you don't need to specify the types of the mock function
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// arguments. However rest assured that your code is still type-safe:
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// you'll get a compiler error if *arg1 doesn't support the ++
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// operator, or if the type of ++(*arg1) isn't compatible with the
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// mock function's return type, for example.
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//
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// Sometimes you'll want to parameterize the action. For that you can use
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// another macro:
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//
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// ACTION_P(name, param_name) { statements; }
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//
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// For example:
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//
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// ACTION_P(Add, n) { return arg0 + n; }
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//
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// will allow you to write:
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//
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// ...WillOnce(Add(5));
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//
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// Note that you don't need to provide the type of the parameter
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// either. If you need to reference the type of a parameter named
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// 'foo', you can write 'foo_type'. For example, in the body of
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// ACTION_P(Add, n) above, you can write 'n_type' to refer to the type
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// of 'n'.
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//
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// We also provide ACTION_P2, ACTION_P3, ..., up to ACTION_P10 to support
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// multi-parameter actions.
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//
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// For the purpose of typing, you can view
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//
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// ACTION_Pk(Foo, p1, ..., pk) { ... }
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//
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// as shorthand for
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//
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// template <typename p1_type, ..., typename pk_type>
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// FooActionPk<p1_type, ..., pk_type> Foo(p1_type p1, ..., pk_type pk) { ... }
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//
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// In particular, you can provide the template type arguments
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// explicitly when invoking Foo(), as in Foo<long, bool>(5, false);
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// although usually you can rely on the compiler to infer the types
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// for you automatically. You can assign the result of expression
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// Foo(p1, ..., pk) to a variable of type FooActionPk<p1_type, ...,
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// pk_type>. This can be useful when composing actions.
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//
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// You can also overload actions with different numbers of parameters:
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//
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// ACTION_P(Plus, a) { ... }
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// ACTION_P2(Plus, a, b) { ... }
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//
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// While it's tempting to always use the ACTION* macros when defining
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// a new action, you should also consider implementing ActionInterface
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// or using MakePolymorphicAction() instead, especially if you need to
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// use the action a lot. While these approaches require more work,
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// they give you more control on the types of the mock function
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// arguments and the action parameters, which in general leads to
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// better compiler error messages that pay off in the long run. They
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// also allow overloading actions based on parameter types (as opposed
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// to just based on the number of parameters).
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//
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// CAVEAT:
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//
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// ACTION*() can only be used in a namespace scope as templates cannot be
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// declared inside of a local class.
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// Users can, however, define any local functors (e.g. a lambda) that
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// can be used as actions.
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//
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// MORE INFORMATION:
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//
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// To learn more about using these macros, please search for 'ACTION' on
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// https://github.com/google/googletest/blob/master/docs/gmock_cook_book.md
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// GOOGLETEST_CM0002 DO NOT DELETE
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#ifndef GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
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#define GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
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#ifndef _WIN32_WCE
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# include <errno.h>
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#endif
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#include <algorithm>
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#include <functional>
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#include <memory>
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#include <string>
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#include <tuple>
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#include <type_traits>
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#include <utility>
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#include "gmock/internal/gmock-internal-utils.h"
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#include "gmock/internal/gmock-port.h"
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#include "gmock/internal/gmock-pp.h"
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#ifdef _MSC_VER
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# pragma warning(push)
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# pragma warning(disable:4100)
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#endif
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namespace testing {
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// To implement an action Foo, define:
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// 1. a class FooAction that implements the ActionInterface interface, and
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// 2. a factory function that creates an Action object from a
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// const FooAction*.
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//
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// The two-level delegation design follows that of Matcher, providing
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// consistency for extension developers. It also eases ownership
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// management as Action objects can now be copied like plain values.
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namespace internal {
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// BuiltInDefaultValueGetter<T, true>::Get() returns a
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// default-constructed T value. BuiltInDefaultValueGetter<T,
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// false>::Get() crashes with an error.
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//
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// This primary template is used when kDefaultConstructible is true.
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template <typename T, bool kDefaultConstructible>
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struct BuiltInDefaultValueGetter {
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static T Get() { return T(); }
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};
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template <typename T>
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struct BuiltInDefaultValueGetter<T, false> {
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static T Get() {
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Assert(false, __FILE__, __LINE__,
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"Default action undefined for the function return type.");
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return internal::Invalid<T>();
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// The above statement will never be reached, but is required in
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// order for this function to compile.
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}
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};
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// BuiltInDefaultValue<T>::Get() returns the "built-in" default value
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// for type T, which is NULL when T is a raw pointer type, 0 when T is
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// a numeric type, false when T is bool, or "" when T is string or
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// std::string. In addition, in C++11 and above, it turns a
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// default-constructed T value if T is default constructible. For any
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// other type T, the built-in default T value is undefined, and the
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// function will abort the process.
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template <typename T>
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class BuiltInDefaultValue {
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public:
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// This function returns true if and only if type T has a built-in default
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// value.
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static bool Exists() {
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return ::std::is_default_constructible<T>::value;
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}
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static T Get() {
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return BuiltInDefaultValueGetter<
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T, ::std::is_default_constructible<T>::value>::Get();
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}
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};
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// This partial specialization says that we use the same built-in
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// default value for T and const T.
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template <typename T>
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class BuiltInDefaultValue<const T> {
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public:
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static bool Exists() { return BuiltInDefaultValue<T>::Exists(); }
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static T Get() { return BuiltInDefaultValue<T>::Get(); }
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};
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// This partial specialization defines the default values for pointer
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// types.
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template <typename T>
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class BuiltInDefaultValue<T*> {
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public:
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static bool Exists() { return true; }
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static T* Get() { return nullptr; }
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};
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// The following specializations define the default values for
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// specific types we care about.
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#define GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(type, value) \
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template <> \
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class BuiltInDefaultValue<type> { \
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public: \
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static bool Exists() { return true; } \
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static type Get() { return value; } \
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}
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(void, ); // NOLINT
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(::std::string, "");
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(bool, false);
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned char, '\0');
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed char, '\0');
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(char, '\0');
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// There's no need for a default action for signed wchar_t, as that
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// type is the same as wchar_t for gcc, and invalid for MSVC.
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//
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// There's also no need for a default action for unsigned wchar_t, as
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// that type is the same as unsigned int for gcc, and invalid for
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// MSVC.
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#if GMOCK_WCHAR_T_IS_NATIVE_
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(wchar_t, 0U); // NOLINT
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#endif
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned short, 0U); // NOLINT
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed short, 0); // NOLINT
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned int, 0U);
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed int, 0);
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned long, 0UL); // NOLINT
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed long, 0L); // NOLINT
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(unsigned long long, 0); // NOLINT
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(signed long long, 0); // NOLINT
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(float, 0);
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GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_(double, 0);
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#undef GMOCK_DEFINE_DEFAULT_ACTION_FOR_RETURN_TYPE_
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// Simple two-arg form of std::disjunction.
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template <typename P, typename Q>
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using disjunction = typename ::std::conditional<P::value, P, Q>::type;
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} // namespace internal
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// When an unexpected function call is encountered, Google Mock will
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// let it return a default value if the user has specified one for its
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// return type, or if the return type has a built-in default value;
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// otherwise Google Mock won't know what value to return and will have
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// to abort the process.
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//
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// The DefaultValue<T> class allows a user to specify the
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// default value for a type T that is both copyable and publicly
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// destructible (i.e. anything that can be used as a function return
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// type). The usage is:
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//
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// // Sets the default value for type T to be foo.
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// DefaultValue<T>::Set(foo);
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template <typename T>
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class DefaultValue {
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public:
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// Sets the default value for type T; requires T to be
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// copy-constructable and have a public destructor.
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static void Set(T x) {
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delete producer_;
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producer_ = new FixedValueProducer(x);
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}
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// Provides a factory function to be called to generate the default value.
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// This method can be used even if T is only move-constructible, but it is not
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// limited to that case.
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typedef T (*FactoryFunction)();
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static void SetFactory(FactoryFunction factory) {
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delete producer_;
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producer_ = new FactoryValueProducer(factory);
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}
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// Unsets the default value for type T.
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static void Clear() {
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delete producer_;
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producer_ = nullptr;
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}
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// Returns true if and only if the user has set the default value for type T.
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static bool IsSet() { return producer_ != nullptr; }
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// Returns true if T has a default return value set by the user or there
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// exists a built-in default value.
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static bool Exists() {
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return IsSet() || internal::BuiltInDefaultValue<T>::Exists();
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}
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// Returns the default value for type T if the user has set one;
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// otherwise returns the built-in default value. Requires that Exists()
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// is true, which ensures that the return value is well-defined.
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static T Get() {
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return producer_ == nullptr ? internal::BuiltInDefaultValue<T>::Get()
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: producer_->Produce();
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}
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private:
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class ValueProducer {
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public:
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virtual ~ValueProducer() {}
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virtual T Produce() = 0;
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};
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class FixedValueProducer : public ValueProducer {
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public:
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explicit FixedValueProducer(T value) : value_(value) {}
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T Produce() override { return value_; }
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private:
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const T value_;
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GTEST_DISALLOW_COPY_AND_ASSIGN_(FixedValueProducer);
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};
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class FactoryValueProducer : public ValueProducer {
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public:
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explicit FactoryValueProducer(FactoryFunction factory)
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: factory_(factory) {}
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T Produce() override { return factory_(); }
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private:
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const FactoryFunction factory_;
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GTEST_DISALLOW_COPY_AND_ASSIGN_(FactoryValueProducer);
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};
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static ValueProducer* producer_;
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};
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// This partial specialization allows a user to set default values for
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// reference types.
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template <typename T>
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class DefaultValue<T&> {
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public:
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// Sets the default value for type T&.
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static void Set(T& x) { // NOLINT
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address_ = &x;
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}
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// Unsets the default value for type T&.
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static void Clear() { address_ = nullptr; }
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// Returns true if and only if the user has set the default value for type T&.
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static bool IsSet() { return address_ != nullptr; }
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// Returns true if T has a default return value set by the user or there
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// exists a built-in default value.
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static bool Exists() {
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return IsSet() || internal::BuiltInDefaultValue<T&>::Exists();
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}
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// Returns the default value for type T& if the user has set one;
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// otherwise returns the built-in default value if there is one;
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// otherwise aborts the process.
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static T& Get() {
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return address_ == nullptr ? internal::BuiltInDefaultValue<T&>::Get()
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: *address_;
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}
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private:
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static T* address_;
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};
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// This specialization allows DefaultValue<void>::Get() to
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// compile.
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template <>
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class DefaultValue<void> {
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public:
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static bool Exists() { return true; }
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static void Get() {}
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};
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// Points to the user-set default value for type T.
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template <typename T>
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typename DefaultValue<T>::ValueProducer* DefaultValue<T>::producer_ = nullptr;
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// Points to the user-set default value for type T&.
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template <typename T>
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T* DefaultValue<T&>::address_ = nullptr;
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// Implement this interface to define an action for function type F.
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template <typename F>
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class ActionInterface {
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public:
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typedef typename internal::Function<F>::Result Result;
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typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
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ActionInterface() {}
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virtual ~ActionInterface() {}
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// Performs the action. This method is not const, as in general an
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// action can have side effects and be stateful. For example, a
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// get-the-next-element-from-the-collection action will need to
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// remember the current element.
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virtual Result Perform(const ArgumentTuple& args) = 0;
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private:
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GTEST_DISALLOW_COPY_AND_ASSIGN_(ActionInterface);
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};
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// An Action<F> is a copyable and IMMUTABLE (except by assignment)
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// object that represents an action to be taken when a mock function
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// of type F is called. The implementation of Action<T> is just a
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// std::shared_ptr to const ActionInterface<T>. Don't inherit from Action!
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// You can view an object implementing ActionInterface<F> as a
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// concrete action (including its current state), and an Action<F>
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// object as a handle to it.
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template <typename F>
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class Action {
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// Adapter class to allow constructing Action from a legacy ActionInterface.
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// New code should create Actions from functors instead.
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struct ActionAdapter {
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// Adapter must be copyable to satisfy std::function requirements.
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::std::shared_ptr<ActionInterface<F>> impl_;
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template <typename... Args>
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typename internal::Function<F>::Result operator()(Args&&... args) {
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return impl_->Perform(
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::std::forward_as_tuple(::std::forward<Args>(args)...));
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}
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};
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template <typename G>
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using IsCompatibleFunctor = std::is_constructible<std::function<F>, G>;
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public:
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typedef typename internal::Function<F>::Result Result;
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typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
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// Constructs a null Action. Needed for storing Action objects in
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// STL containers.
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Action() {}
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// Construct an Action from a specified callable.
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// This cannot take std::function directly, because then Action would not be
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// directly constructible from lambda (it would require two conversions).
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template <
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typename G,
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typename = typename std::enable_if<internal::disjunction<
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IsCompatibleFunctor<G>, std::is_constructible<std::function<Result()>,
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G>>::value>::type>
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Action(G&& fun) { // NOLINT
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Init(::std::forward<G>(fun), IsCompatibleFunctor<G>());
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}
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// Constructs an Action from its implementation.
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explicit Action(ActionInterface<F>* impl)
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: fun_(ActionAdapter{::std::shared_ptr<ActionInterface<F>>(impl)}) {}
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// This constructor allows us to turn an Action<Func> object into an
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// Action<F>, as long as F's arguments can be implicitly converted
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// to Func's and Func's return type can be implicitly converted to F's.
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template <typename Func>
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explicit Action(const Action<Func>& action) : fun_(action.fun_) {}
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// Returns true if and only if this is the DoDefault() action.
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bool IsDoDefault() const { return fun_ == nullptr; }
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// Performs the action. Note that this method is const even though
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// the corresponding method in ActionInterface is not. The reason
|
|
// is that a const Action<F> means that it cannot be re-bound to
|
|
// another concrete action, not that the concrete action it binds to
|
|
// cannot change state. (Think of the difference between a const
|
|
// pointer and a pointer to const.)
|
|
Result Perform(ArgumentTuple args) const {
|
|
if (IsDoDefault()) {
|
|
internal::IllegalDoDefault(__FILE__, __LINE__);
|
|
}
|
|
return internal::Apply(fun_, ::std::move(args));
|
|
}
|
|
|
|
private:
|
|
template <typename G>
|
|
friend class Action;
|
|
|
|
template <typename G>
|
|
void Init(G&& g, ::std::true_type) {
|
|
fun_ = ::std::forward<G>(g);
|
|
}
|
|
|
|
template <typename G>
|
|
void Init(G&& g, ::std::false_type) {
|
|
fun_ = IgnoreArgs<typename ::std::decay<G>::type>{::std::forward<G>(g)};
|
|
}
|
|
|
|
template <typename FunctionImpl>
|
|
struct IgnoreArgs {
|
|
template <typename... Args>
|
|
Result operator()(const Args&...) const {
|
|
return function_impl();
|
|
}
|
|
|
|
FunctionImpl function_impl;
|
|
};
|
|
|
|
// fun_ is an empty function if and only if this is the DoDefault() action.
|
|
::std::function<F> fun_;
|
|
};
|
|
|
|
// The PolymorphicAction class template makes it easy to implement a
|
|
// polymorphic action (i.e. an action that can be used in mock
|
|
// functions of than one type, e.g. Return()).
|
|
//
|
|
// To define a polymorphic action, a user first provides a COPYABLE
|
|
// implementation class that has a Perform() method template:
|
|
//
|
|
// class FooAction {
|
|
// public:
|
|
// template <typename Result, typename ArgumentTuple>
|
|
// Result Perform(const ArgumentTuple& args) const {
|
|
// // Processes the arguments and returns a result, using
|
|
// // std::get<N>(args) to get the N-th (0-based) argument in the tuple.
|
|
// }
|
|
// ...
|
|
// };
|
|
//
|
|
// Then the user creates the polymorphic action using
|
|
// MakePolymorphicAction(object) where object has type FooAction. See
|
|
// the definition of Return(void) and SetArgumentPointee<N>(value) for
|
|
// complete examples.
|
|
template <typename Impl>
|
|
class PolymorphicAction {
|
|
public:
|
|
explicit PolymorphicAction(const Impl& impl) : impl_(impl) {}
|
|
|
|
template <typename F>
|
|
operator Action<F>() const {
|
|
return Action<F>(new MonomorphicImpl<F>(impl_));
|
|
}
|
|
|
|
private:
|
|
template <typename F>
|
|
class MonomorphicImpl : public ActionInterface<F> {
|
|
public:
|
|
typedef typename internal::Function<F>::Result Result;
|
|
typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
|
|
|
|
explicit MonomorphicImpl(const Impl& impl) : impl_(impl) {}
|
|
|
|
Result Perform(const ArgumentTuple& args) override {
|
|
return impl_.template Perform<Result>(args);
|
|
}
|
|
|
|
private:
|
|
Impl impl_;
|
|
};
|
|
|
|
Impl impl_;
|
|
};
|
|
|
|
// Creates an Action from its implementation and returns it. The
|
|
// created Action object owns the implementation.
|
|
template <typename F>
|
|
Action<F> MakeAction(ActionInterface<F>* impl) {
|
|
return Action<F>(impl);
|
|
}
|
|
|
|
// Creates a polymorphic action from its implementation. This is
|
|
// easier to use than the PolymorphicAction<Impl> constructor as it
|
|
// doesn't require you to explicitly write the template argument, e.g.
|
|
//
|
|
// MakePolymorphicAction(foo);
|
|
// vs
|
|
// PolymorphicAction<TypeOfFoo>(foo);
|
|
template <typename Impl>
|
|
inline PolymorphicAction<Impl> MakePolymorphicAction(const Impl& impl) {
|
|
return PolymorphicAction<Impl>(impl);
|
|
}
|
|
|
|
namespace internal {
|
|
|
|
// Helper struct to specialize ReturnAction to execute a move instead of a copy
|
|
// on return. Useful for move-only types, but could be used on any type.
|
|
template <typename T>
|
|
struct ByMoveWrapper {
|
|
explicit ByMoveWrapper(T value) : payload(std::move(value)) {}
|
|
T payload;
|
|
};
|
|
|
|
// Implements the polymorphic Return(x) action, which can be used in
|
|
// any function that returns the type of x, regardless of the argument
|
|
// types.
|
|
//
|
|
// Note: The value passed into Return must be converted into
|
|
// Function<F>::Result when this action is cast to Action<F> rather than
|
|
// when that action is performed. This is important in scenarios like
|
|
//
|
|
// MOCK_METHOD1(Method, T(U));
|
|
// ...
|
|
// {
|
|
// Foo foo;
|
|
// X x(&foo);
|
|
// EXPECT_CALL(mock, Method(_)).WillOnce(Return(x));
|
|
// }
|
|
//
|
|
// In the example above the variable x holds reference to foo which leaves
|
|
// scope and gets destroyed. If copying X just copies a reference to foo,
|
|
// that copy will be left with a hanging reference. If conversion to T
|
|
// makes a copy of foo, the above code is safe. To support that scenario, we
|
|
// need to make sure that the type conversion happens inside the EXPECT_CALL
|
|
// statement, and conversion of the result of Return to Action<T(U)> is a
|
|
// good place for that.
|
|
//
|
|
// The real life example of the above scenario happens when an invocation
|
|
// of gtl::Container() is passed into Return.
|
|
//
|
|
template <typename R>
|
|
class ReturnAction {
|
|
public:
|
|
// Constructs a ReturnAction object from the value to be returned.
|
|
// 'value' is passed by value instead of by const reference in order
|
|
// to allow Return("string literal") to compile.
|
|
explicit ReturnAction(R value) : value_(new R(std::move(value))) {}
|
|
|
|
// This template type conversion operator allows Return(x) to be
|
|
// used in ANY function that returns x's type.
|
|
template <typename F>
|
|
operator Action<F>() const { // NOLINT
|
|
// Assert statement belongs here because this is the best place to verify
|
|
// conditions on F. It produces the clearest error messages
|
|
// in most compilers.
|
|
// Impl really belongs in this scope as a local class but can't
|
|
// because MSVC produces duplicate symbols in different translation units
|
|
// in this case. Until MS fixes that bug we put Impl into the class scope
|
|
// and put the typedef both here (for use in assert statement) and
|
|
// in the Impl class. But both definitions must be the same.
|
|
typedef typename Function<F>::Result Result;
|
|
GTEST_COMPILE_ASSERT_(
|
|
!std::is_reference<Result>::value,
|
|
use_ReturnRef_instead_of_Return_to_return_a_reference);
|
|
static_assert(!std::is_void<Result>::value,
|
|
"Can't use Return() on an action expected to return `void`.");
|
|
return Action<F>(new Impl<R, F>(value_));
|
|
}
|
|
|
|
private:
|
|
// Implements the Return(x) action for a particular function type F.
|
|
template <typename R_, typename F>
|
|
class Impl : public ActionInterface<F> {
|
|
public:
|
|
typedef typename Function<F>::Result Result;
|
|
typedef typename Function<F>::ArgumentTuple ArgumentTuple;
|
|
|
|
// The implicit cast is necessary when Result has more than one
|
|
// single-argument constructor (e.g. Result is std::vector<int>) and R
|
|
// has a type conversion operator template. In that case, value_(value)
|
|
// won't compile as the compiler doesn't known which constructor of
|
|
// Result to call. ImplicitCast_ forces the compiler to convert R to
|
|
// Result without considering explicit constructors, thus resolving the
|
|
// ambiguity. value_ is then initialized using its copy constructor.
|
|
explicit Impl(const std::shared_ptr<R>& value)
|
|
: value_before_cast_(*value),
|
|
value_(ImplicitCast_<Result>(value_before_cast_)) {}
|
|
|
|
Result Perform(const ArgumentTuple&) override { return value_; }
|
|
|
|
private:
|
|
GTEST_COMPILE_ASSERT_(!std::is_reference<Result>::value,
|
|
Result_cannot_be_a_reference_type);
|
|
// We save the value before casting just in case it is being cast to a
|
|
// wrapper type.
|
|
R value_before_cast_;
|
|
Result value_;
|
|
|
|
GTEST_DISALLOW_COPY_AND_ASSIGN_(Impl);
|
|
};
|
|
|
|
// Partially specialize for ByMoveWrapper. This version of ReturnAction will
|
|
// move its contents instead.
|
|
template <typename R_, typename F>
|
|
class Impl<ByMoveWrapper<R_>, F> : public ActionInterface<F> {
|
|
public:
|
|
typedef typename Function<F>::Result Result;
|
|
typedef typename Function<F>::ArgumentTuple ArgumentTuple;
|
|
|
|
explicit Impl(const std::shared_ptr<R>& wrapper)
|
|
: performed_(false), wrapper_(wrapper) {}
|
|
|
|
Result Perform(const ArgumentTuple&) override {
|
|
GTEST_CHECK_(!performed_)
|
|
<< "A ByMove() action should only be performed once.";
|
|
performed_ = true;
|
|
return std::move(wrapper_->payload);
|
|
}
|
|
|
|
private:
|
|
bool performed_;
|
|
const std::shared_ptr<R> wrapper_;
|
|
};
|
|
|
|
const std::shared_ptr<R> value_;
|
|
};
|
|
|
|
// Implements the ReturnNull() action.
|
|
class ReturnNullAction {
|
|
public:
|
|
// Allows ReturnNull() to be used in any pointer-returning function. In C++11
|
|
// this is enforced by returning nullptr, and in non-C++11 by asserting a
|
|
// pointer type on compile time.
|
|
template <typename Result, typename ArgumentTuple>
|
|
static Result Perform(const ArgumentTuple&) {
|
|
return nullptr;
|
|
}
|
|
};
|
|
|
|
// Implements the Return() action.
|
|
class ReturnVoidAction {
|
|
public:
|
|
// Allows Return() to be used in any void-returning function.
|
|
template <typename Result, typename ArgumentTuple>
|
|
static void Perform(const ArgumentTuple&) {
|
|
static_assert(std::is_void<Result>::value, "Result should be void.");
|
|
}
|
|
};
|
|
|
|
// Implements the polymorphic ReturnRef(x) action, which can be used
|
|
// in any function that returns a reference to the type of x,
|
|
// regardless of the argument types.
|
|
template <typename T>
|
|
class ReturnRefAction {
|
|
public:
|
|
// Constructs a ReturnRefAction object from the reference to be returned.
|
|
explicit ReturnRefAction(T& ref) : ref_(ref) {} // NOLINT
|
|
|
|
// This template type conversion operator allows ReturnRef(x) to be
|
|
// used in ANY function that returns a reference to x's type.
|
|
template <typename F>
|
|
operator Action<F>() const {
|
|
typedef typename Function<F>::Result Result;
|
|
// Asserts that the function return type is a reference. This
|
|
// catches the user error of using ReturnRef(x) when Return(x)
|
|
// should be used, and generates some helpful error message.
|
|
GTEST_COMPILE_ASSERT_(std::is_reference<Result>::value,
|
|
use_Return_instead_of_ReturnRef_to_return_a_value);
|
|
return Action<F>(new Impl<F>(ref_));
|
|
}
|
|
|
|
private:
|
|
// Implements the ReturnRef(x) action for a particular function type F.
|
|
template <typename F>
|
|
class Impl : public ActionInterface<F> {
|
|
public:
|
|
typedef typename Function<F>::Result Result;
|
|
typedef typename Function<F>::ArgumentTuple ArgumentTuple;
|
|
|
|
explicit Impl(T& ref) : ref_(ref) {} // NOLINT
|
|
|
|
Result Perform(const ArgumentTuple&) override { return ref_; }
|
|
|
|
private:
|
|
T& ref_;
|
|
};
|
|
|
|
T& ref_;
|
|
};
|
|
|
|
// Implements the polymorphic ReturnRefOfCopy(x) action, which can be
|
|
// used in any function that returns a reference to the type of x,
|
|
// regardless of the argument types.
|
|
template <typename T>
|
|
class ReturnRefOfCopyAction {
|
|
public:
|
|
// Constructs a ReturnRefOfCopyAction object from the reference to
|
|
// be returned.
|
|
explicit ReturnRefOfCopyAction(const T& value) : value_(value) {} // NOLINT
|
|
|
|
// This template type conversion operator allows ReturnRefOfCopy(x) to be
|
|
// used in ANY function that returns a reference to x's type.
|
|
template <typename F>
|
|
operator Action<F>() const {
|
|
typedef typename Function<F>::Result Result;
|
|
// Asserts that the function return type is a reference. This
|
|
// catches the user error of using ReturnRefOfCopy(x) when Return(x)
|
|
// should be used, and generates some helpful error message.
|
|
GTEST_COMPILE_ASSERT_(
|
|
std::is_reference<Result>::value,
|
|
use_Return_instead_of_ReturnRefOfCopy_to_return_a_value);
|
|
return Action<F>(new Impl<F>(value_));
|
|
}
|
|
|
|
private:
|
|
// Implements the ReturnRefOfCopy(x) action for a particular function type F.
|
|
template <typename F>
|
|
class Impl : public ActionInterface<F> {
|
|
public:
|
|
typedef typename Function<F>::Result Result;
|
|
typedef typename Function<F>::ArgumentTuple ArgumentTuple;
|
|
|
|
explicit Impl(const T& value) : value_(value) {} // NOLINT
|
|
|
|
Result Perform(const ArgumentTuple&) override { return value_; }
|
|
|
|
private:
|
|
T value_;
|
|
};
|
|
|
|
const T value_;
|
|
};
|
|
|
|
// Implements the polymorphic ReturnRoundRobin(v) action, which can be
|
|
// used in any function that returns the element_type of v.
|
|
template <typename T>
|
|
class ReturnRoundRobinAction {
|
|
public:
|
|
explicit ReturnRoundRobinAction(std::vector<T> values) {
|
|
GTEST_CHECK_(!values.empty())
|
|
<< "ReturnRoundRobin requires at least one element.";
|
|
state_->values = std::move(values);
|
|
}
|
|
|
|
template <typename... Args>
|
|
T operator()(Args&&...) const {
|
|
return state_->Next();
|
|
}
|
|
|
|
private:
|
|
struct State {
|
|
T Next() {
|
|
T ret_val = values[i++];
|
|
if (i == values.size()) i = 0;
|
|
return ret_val;
|
|
}
|
|
|
|
std::vector<T> values;
|
|
size_t i = 0;
|
|
};
|
|
std::shared_ptr<State> state_ = std::make_shared<State>();
|
|
};
|
|
|
|
// Implements the polymorphic DoDefault() action.
|
|
class DoDefaultAction {
|
|
public:
|
|
// This template type conversion operator allows DoDefault() to be
|
|
// used in any function.
|
|
template <typename F>
|
|
operator Action<F>() const { return Action<F>(); } // NOLINT
|
|
};
|
|
|
|
// Implements the Assign action to set a given pointer referent to a
|
|
// particular value.
|
|
template <typename T1, typename T2>
|
|
class AssignAction {
|
|
public:
|
|
AssignAction(T1* ptr, T2 value) : ptr_(ptr), value_(value) {}
|
|
|
|
template <typename Result, typename ArgumentTuple>
|
|
void Perform(const ArgumentTuple& /* args */) const {
|
|
*ptr_ = value_;
|
|
}
|
|
|
|
private:
|
|
T1* const ptr_;
|
|
const T2 value_;
|
|
};
|
|
|
|
#if !GTEST_OS_WINDOWS_MOBILE
|
|
|
|
// Implements the SetErrnoAndReturn action to simulate return from
|
|
// various system calls and libc functions.
|
|
template <typename T>
|
|
class SetErrnoAndReturnAction {
|
|
public:
|
|
SetErrnoAndReturnAction(int errno_value, T result)
|
|
: errno_(errno_value),
|
|
result_(result) {}
|
|
template <typename Result, typename ArgumentTuple>
|
|
Result Perform(const ArgumentTuple& /* args */) const {
|
|
errno = errno_;
|
|
return result_;
|
|
}
|
|
|
|
private:
|
|
const int errno_;
|
|
const T result_;
|
|
};
|
|
|
|
#endif // !GTEST_OS_WINDOWS_MOBILE
|
|
|
|
// Implements the SetArgumentPointee<N>(x) action for any function
|
|
// whose N-th argument (0-based) is a pointer to x's type.
|
|
template <size_t N, typename A, typename = void>
|
|
struct SetArgumentPointeeAction {
|
|
A value;
|
|
|
|
template <typename... Args>
|
|
void operator()(const Args&... args) const {
|
|
*::std::get<N>(std::tie(args...)) = value;
|
|
}
|
|
};
|
|
|
|
// Implements the Invoke(object_ptr, &Class::Method) action.
|
|
template <class Class, typename MethodPtr>
|
|
struct InvokeMethodAction {
|
|
Class* const obj_ptr;
|
|
const MethodPtr method_ptr;
|
|
|
|
template <typename... Args>
|
|
auto operator()(Args&&... args) const
|
|
-> decltype((obj_ptr->*method_ptr)(std::forward<Args>(args)...)) {
|
|
return (obj_ptr->*method_ptr)(std::forward<Args>(args)...);
|
|
}
|
|
};
|
|
|
|
// Implements the InvokeWithoutArgs(f) action. The template argument
|
|
// FunctionImpl is the implementation type of f, which can be either a
|
|
// function pointer or a functor. InvokeWithoutArgs(f) can be used as an
|
|
// Action<F> as long as f's type is compatible with F.
|
|
template <typename FunctionImpl>
|
|
struct InvokeWithoutArgsAction {
|
|
FunctionImpl function_impl;
|
|
|
|
// Allows InvokeWithoutArgs(f) to be used as any action whose type is
|
|
// compatible with f.
|
|
template <typename... Args>
|
|
auto operator()(const Args&...) -> decltype(function_impl()) {
|
|
return function_impl();
|
|
}
|
|
};
|
|
|
|
// Implements the InvokeWithoutArgs(object_ptr, &Class::Method) action.
|
|
template <class Class, typename MethodPtr>
|
|
struct InvokeMethodWithoutArgsAction {
|
|
Class* const obj_ptr;
|
|
const MethodPtr method_ptr;
|
|
|
|
using ReturnType =
|
|
decltype((std::declval<Class*>()->*std::declval<MethodPtr>())());
|
|
|
|
template <typename... Args>
|
|
ReturnType operator()(const Args&...) const {
|
|
return (obj_ptr->*method_ptr)();
|
|
}
|
|
};
|
|
|
|
// Implements the IgnoreResult(action) action.
|
|
template <typename A>
|
|
class IgnoreResultAction {
|
|
public:
|
|
explicit IgnoreResultAction(const A& action) : action_(action) {}
|
|
|
|
template <typename F>
|
|
operator Action<F>() const {
|
|
// Assert statement belongs here because this is the best place to verify
|
|
// conditions on F. It produces the clearest error messages
|
|
// in most compilers.
|
|
// Impl really belongs in this scope as a local class but can't
|
|
// because MSVC produces duplicate symbols in different translation units
|
|
// in this case. Until MS fixes that bug we put Impl into the class scope
|
|
// and put the typedef both here (for use in assert statement) and
|
|
// in the Impl class. But both definitions must be the same.
|
|
typedef typename internal::Function<F>::Result Result;
|
|
|
|
// Asserts at compile time that F returns void.
|
|
static_assert(std::is_void<Result>::value, "Result type should be void.");
|
|
|
|
return Action<F>(new Impl<F>(action_));
|
|
}
|
|
|
|
private:
|
|
template <typename F>
|
|
class Impl : public ActionInterface<F> {
|
|
public:
|
|
typedef typename internal::Function<F>::Result Result;
|
|
typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
|
|
|
|
explicit Impl(const A& action) : action_(action) {}
|
|
|
|
void Perform(const ArgumentTuple& args) override {
|
|
// Performs the action and ignores its result.
|
|
action_.Perform(args);
|
|
}
|
|
|
|
private:
|
|
// Type OriginalFunction is the same as F except that its return
|
|
// type is IgnoredValue.
|
|
typedef typename internal::Function<F>::MakeResultIgnoredValue
|
|
OriginalFunction;
|
|
|
|
const Action<OriginalFunction> action_;
|
|
};
|
|
|
|
const A action_;
|
|
};
|
|
|
|
template <typename InnerAction, size_t... I>
|
|
struct WithArgsAction {
|
|
InnerAction action;
|
|
|
|
// The inner action could be anything convertible to Action<X>.
|
|
// We use the conversion operator to detect the signature of the inner Action.
|
|
template <typename R, typename... Args>
|
|
operator Action<R(Args...)>() const { // NOLINT
|
|
using TupleType = std::tuple<Args...>;
|
|
Action<R(typename std::tuple_element<I, TupleType>::type...)>
|
|
converted(action);
|
|
|
|
return [converted](Args... args) -> R {
|
|
return converted.Perform(std::forward_as_tuple(
|
|
std::get<I>(std::forward_as_tuple(std::forward<Args>(args)...))...));
|
|
};
|
|
}
|
|
};
|
|
|
|
template <typename... Actions>
|
|
struct DoAllAction {
|
|
private:
|
|
template <typename T>
|
|
using NonFinalType =
|
|
typename std::conditional<std::is_scalar<T>::value, T, const T&>::type;
|
|
|
|
template <typename ActionT, size_t... I>
|
|
std::vector<ActionT> Convert(IndexSequence<I...>) const {
|
|
return {ActionT(std::get<I>(actions))...};
|
|
}
|
|
|
|
public:
|
|
std::tuple<Actions...> actions;
|
|
|
|
template <typename R, typename... Args>
|
|
operator Action<R(Args...)>() const { // NOLINT
|
|
struct Op {
|
|
std::vector<Action<void(NonFinalType<Args>...)>> converted;
|
|
Action<R(Args...)> last;
|
|
R operator()(Args... args) const {
|
|
auto tuple_args = std::forward_as_tuple(std::forward<Args>(args)...);
|
|
for (auto& a : converted) {
|
|
a.Perform(tuple_args);
|
|
}
|
|
return last.Perform(std::move(tuple_args));
|
|
}
|
|
};
|
|
return Op{Convert<Action<void(NonFinalType<Args>...)>>(
|
|
MakeIndexSequence<sizeof...(Actions) - 1>()),
|
|
std::get<sizeof...(Actions) - 1>(actions)};
|
|
}
|
|
};
|
|
|
|
template <typename T, typename... Params>
|
|
struct ReturnNewAction {
|
|
T* operator()() const {
|
|
return internal::Apply(
|
|
[](const Params&... unpacked_params) {
|
|
return new T(unpacked_params...);
|
|
},
|
|
params);
|
|
}
|
|
std::tuple<Params...> params;
|
|
};
|
|
|
|
template <size_t k>
|
|
struct ReturnArgAction {
|
|
template <typename... Args>
|
|
auto operator()(const Args&... args) const ->
|
|
typename std::tuple_element<k, std::tuple<Args...>>::type {
|
|
return std::get<k>(std::tie(args...));
|
|
}
|
|
};
|
|
|
|
template <size_t k, typename Ptr>
|
|
struct SaveArgAction {
|
|
Ptr pointer;
|
|
|
|
template <typename... Args>
|
|
void operator()(const Args&... args) const {
|
|
*pointer = std::get<k>(std::tie(args...));
|
|
}
|
|
};
|
|
|
|
template <size_t k, typename Ptr>
|
|
struct SaveArgPointeeAction {
|
|
Ptr pointer;
|
|
|
|
template <typename... Args>
|
|
void operator()(const Args&... args) const {
|
|
*pointer = *std::get<k>(std::tie(args...));
|
|
}
|
|
};
|
|
|
|
template <size_t k, typename T>
|
|
struct SetArgRefereeAction {
|
|
T value;
|
|
|
|
template <typename... Args>
|
|
void operator()(Args&&... args) const {
|
|
using argk_type =
|
|
typename ::std::tuple_element<k, std::tuple<Args...>>::type;
|
|
static_assert(std::is_lvalue_reference<argk_type>::value,
|
|
"Argument must be a reference type.");
|
|
std::get<k>(std::tie(args...)) = value;
|
|
}
|
|
};
|
|
|
|
template <size_t k, typename I1, typename I2>
|
|
struct SetArrayArgumentAction {
|
|
I1 first;
|
|
I2 last;
|
|
|
|
template <typename... Args>
|
|
void operator()(const Args&... args) const {
|
|
auto value = std::get<k>(std::tie(args...));
|
|
for (auto it = first; it != last; ++it, (void)++value) {
|
|
*value = *it;
|
|
}
|
|
}
|
|
};
|
|
|
|
template <size_t k>
|
|
struct DeleteArgAction {
|
|
template <typename... Args>
|
|
void operator()(const Args&... args) const {
|
|
delete std::get<k>(std::tie(args...));
|
|
}
|
|
};
|
|
|
|
template <typename Ptr>
|
|
struct ReturnPointeeAction {
|
|
Ptr pointer;
|
|
template <typename... Args>
|
|
auto operator()(const Args&...) const -> decltype(*pointer) {
|
|
return *pointer;
|
|
}
|
|
};
|
|
|
|
#if GTEST_HAS_EXCEPTIONS
|
|
template <typename T>
|
|
struct ThrowAction {
|
|
T exception;
|
|
// We use a conversion operator to adapt to any return type.
|
|
template <typename R, typename... Args>
|
|
operator Action<R(Args...)>() const { // NOLINT
|
|
T copy = exception;
|
|
return [copy](Args...) -> R { throw copy; };
|
|
}
|
|
};
|
|
#endif // GTEST_HAS_EXCEPTIONS
|
|
|
|
} // namespace internal
|
|
|
|
// An Unused object can be implicitly constructed from ANY value.
|
|
// This is handy when defining actions that ignore some or all of the
|
|
// mock function arguments. For example, given
|
|
//
|
|
// MOCK_METHOD3(Foo, double(const string& label, double x, double y));
|
|
// MOCK_METHOD3(Bar, double(int index, double x, double y));
|
|
//
|
|
// instead of
|
|
//
|
|
// double DistanceToOriginWithLabel(const string& label, double x, double y) {
|
|
// return sqrt(x*x + y*y);
|
|
// }
|
|
// double DistanceToOriginWithIndex(int index, double x, double y) {
|
|
// return sqrt(x*x + y*y);
|
|
// }
|
|
// ...
|
|
// EXPECT_CALL(mock, Foo("abc", _, _))
|
|
// .WillOnce(Invoke(DistanceToOriginWithLabel));
|
|
// EXPECT_CALL(mock, Bar(5, _, _))
|
|
// .WillOnce(Invoke(DistanceToOriginWithIndex));
|
|
//
|
|
// you could write
|
|
//
|
|
// // We can declare any uninteresting argument as Unused.
|
|
// double DistanceToOrigin(Unused, double x, double y) {
|
|
// return sqrt(x*x + y*y);
|
|
// }
|
|
// ...
|
|
// EXPECT_CALL(mock, Foo("abc", _, _)).WillOnce(Invoke(DistanceToOrigin));
|
|
// EXPECT_CALL(mock, Bar(5, _, _)).WillOnce(Invoke(DistanceToOrigin));
|
|
typedef internal::IgnoredValue Unused;
|
|
|
|
// Creates an action that does actions a1, a2, ..., sequentially in
|
|
// each invocation. All but the last action will have a readonly view of the
|
|
// arguments.
|
|
template <typename... Action>
|
|
internal::DoAllAction<typename std::decay<Action>::type...> DoAll(
|
|
Action&&... action) {
|
|
return {std::forward_as_tuple(std::forward<Action>(action)...)};
|
|
}
|
|
|
|
// WithArg<k>(an_action) creates an action that passes the k-th
|
|
// (0-based) argument of the mock function to an_action and performs
|
|
// it. It adapts an action accepting one argument to one that accepts
|
|
// multiple arguments. For convenience, we also provide
|
|
// WithArgs<k>(an_action) (defined below) as a synonym.
|
|
template <size_t k, typename InnerAction>
|
|
internal::WithArgsAction<typename std::decay<InnerAction>::type, k>
|
|
WithArg(InnerAction&& action) {
|
|
return {std::forward<InnerAction>(action)};
|
|
}
|
|
|
|
// WithArgs<N1, N2, ..., Nk>(an_action) creates an action that passes
|
|
// the selected arguments of the mock function to an_action and
|
|
// performs it. It serves as an adaptor between actions with
|
|
// different argument lists.
|
|
template <size_t k, size_t... ks, typename InnerAction>
|
|
internal::WithArgsAction<typename std::decay<InnerAction>::type, k, ks...>
|
|
WithArgs(InnerAction&& action) {
|
|
return {std::forward<InnerAction>(action)};
|
|
}
|
|
|
|
// WithoutArgs(inner_action) can be used in a mock function with a
|
|
// non-empty argument list to perform inner_action, which takes no
|
|
// argument. In other words, it adapts an action accepting no
|
|
// argument to one that accepts (and ignores) arguments.
|
|
template <typename InnerAction>
|
|
internal::WithArgsAction<typename std::decay<InnerAction>::type>
|
|
WithoutArgs(InnerAction&& action) {
|
|
return {std::forward<InnerAction>(action)};
|
|
}
|
|
|
|
// Creates an action that returns 'value'. 'value' is passed by value
|
|
// instead of const reference - otherwise Return("string literal")
|
|
// will trigger a compiler error about using array as initializer.
|
|
template <typename R>
|
|
internal::ReturnAction<R> Return(R value) {
|
|
return internal::ReturnAction<R>(std::move(value));
|
|
}
|
|
|
|
// Creates an action that returns NULL.
|
|
inline PolymorphicAction<internal::ReturnNullAction> ReturnNull() {
|
|
return MakePolymorphicAction(internal::ReturnNullAction());
|
|
}
|
|
|
|
// Creates an action that returns from a void function.
|
|
inline PolymorphicAction<internal::ReturnVoidAction> Return() {
|
|
return MakePolymorphicAction(internal::ReturnVoidAction());
|
|
}
|
|
|
|
// Creates an action that returns the reference to a variable.
|
|
template <typename R>
|
|
inline internal::ReturnRefAction<R> ReturnRef(R& x) { // NOLINT
|
|
return internal::ReturnRefAction<R>(x);
|
|
}
|
|
|
|
// Prevent using ReturnRef on reference to temporary.
|
|
template <typename R, R* = nullptr>
|
|
internal::ReturnRefAction<R> ReturnRef(R&&) = delete;
|
|
|
|
// Creates an action that returns the reference to a copy of the
|
|
// argument. The copy is created when the action is constructed and
|
|
// lives as long as the action.
|
|
template <typename R>
|
|
inline internal::ReturnRefOfCopyAction<R> ReturnRefOfCopy(const R& x) {
|
|
return internal::ReturnRefOfCopyAction<R>(x);
|
|
}
|
|
|
|
// Modifies the parent action (a Return() action) to perform a move of the
|
|
// argument instead of a copy.
|
|
// Return(ByMove()) actions can only be executed once and will assert this
|
|
// invariant.
|
|
template <typename R>
|
|
internal::ByMoveWrapper<R> ByMove(R x) {
|
|
return internal::ByMoveWrapper<R>(std::move(x));
|
|
}
|
|
|
|
// Creates an action that returns an element of `vals`. Calling this action will
|
|
// repeatedly return the next value from `vals` until it reaches the end and
|
|
// will restart from the beginning.
|
|
template <typename T>
|
|
internal::ReturnRoundRobinAction<T> ReturnRoundRobin(std::vector<T> vals) {
|
|
return internal::ReturnRoundRobinAction<T>(std::move(vals));
|
|
}
|
|
|
|
// Creates an action that returns an element of `vals`. Calling this action will
|
|
// repeatedly return the next value from `vals` until it reaches the end and
|
|
// will restart from the beginning.
|
|
template <typename T>
|
|
internal::ReturnRoundRobinAction<T> ReturnRoundRobin(
|
|
std::initializer_list<T> vals) {
|
|
return internal::ReturnRoundRobinAction<T>(std::vector<T>(vals));
|
|
}
|
|
|
|
// Creates an action that does the default action for the give mock function.
|
|
inline internal::DoDefaultAction DoDefault() {
|
|
return internal::DoDefaultAction();
|
|
}
|
|
|
|
// Creates an action that sets the variable pointed by the N-th
|
|
// (0-based) function argument to 'value'.
|
|
template <size_t N, typename T>
|
|
internal::SetArgumentPointeeAction<N, T> SetArgPointee(T value) {
|
|
return {std::move(value)};
|
|
}
|
|
|
|
// The following version is DEPRECATED.
|
|
template <size_t N, typename T>
|
|
internal::SetArgumentPointeeAction<N, T> SetArgumentPointee(T value) {
|
|
return {std::move(value)};
|
|
}
|
|
|
|
// Creates an action that sets a pointer referent to a given value.
|
|
template <typename T1, typename T2>
|
|
PolymorphicAction<internal::AssignAction<T1, T2> > Assign(T1* ptr, T2 val) {
|
|
return MakePolymorphicAction(internal::AssignAction<T1, T2>(ptr, val));
|
|
}
|
|
|
|
#if !GTEST_OS_WINDOWS_MOBILE
|
|
|
|
// Creates an action that sets errno and returns the appropriate error.
|
|
template <typename T>
|
|
PolymorphicAction<internal::SetErrnoAndReturnAction<T> >
|
|
SetErrnoAndReturn(int errval, T result) {
|
|
return MakePolymorphicAction(
|
|
internal::SetErrnoAndReturnAction<T>(errval, result));
|
|
}
|
|
|
|
#endif // !GTEST_OS_WINDOWS_MOBILE
|
|
|
|
// Various overloads for Invoke().
|
|
|
|
// Legacy function.
|
|
// Actions can now be implicitly constructed from callables. No need to create
|
|
// wrapper objects.
|
|
// This function exists for backwards compatibility.
|
|
template <typename FunctionImpl>
|
|
typename std::decay<FunctionImpl>::type Invoke(FunctionImpl&& function_impl) {
|
|
return std::forward<FunctionImpl>(function_impl);
|
|
}
|
|
|
|
// Creates an action that invokes the given method on the given object
|
|
// with the mock function's arguments.
|
|
template <class Class, typename MethodPtr>
|
|
internal::InvokeMethodAction<Class, MethodPtr> Invoke(Class* obj_ptr,
|
|
MethodPtr method_ptr) {
|
|
return {obj_ptr, method_ptr};
|
|
}
|
|
|
|
// Creates an action that invokes 'function_impl' with no argument.
|
|
template <typename FunctionImpl>
|
|
internal::InvokeWithoutArgsAction<typename std::decay<FunctionImpl>::type>
|
|
InvokeWithoutArgs(FunctionImpl function_impl) {
|
|
return {std::move(function_impl)};
|
|
}
|
|
|
|
// Creates an action that invokes the given method on the given object
|
|
// with no argument.
|
|
template <class Class, typename MethodPtr>
|
|
internal::InvokeMethodWithoutArgsAction<Class, MethodPtr> InvokeWithoutArgs(
|
|
Class* obj_ptr, MethodPtr method_ptr) {
|
|
return {obj_ptr, method_ptr};
|
|
}
|
|
|
|
// Creates an action that performs an_action and throws away its
|
|
// result. In other words, it changes the return type of an_action to
|
|
// void. an_action MUST NOT return void, or the code won't compile.
|
|
template <typename A>
|
|
inline internal::IgnoreResultAction<A> IgnoreResult(const A& an_action) {
|
|
return internal::IgnoreResultAction<A>(an_action);
|
|
}
|
|
|
|
// Creates a reference wrapper for the given L-value. If necessary,
|
|
// you can explicitly specify the type of the reference. For example,
|
|
// suppose 'derived' is an object of type Derived, ByRef(derived)
|
|
// would wrap a Derived&. If you want to wrap a const Base& instead,
|
|
// where Base is a base class of Derived, just write:
|
|
//
|
|
// ByRef<const Base>(derived)
|
|
//
|
|
// N.B. ByRef is redundant with std::ref, std::cref and std::reference_wrapper.
|
|
// However, it may still be used for consistency with ByMove().
|
|
template <typename T>
|
|
inline ::std::reference_wrapper<T> ByRef(T& l_value) { // NOLINT
|
|
return ::std::reference_wrapper<T>(l_value);
|
|
}
|
|
|
|
// The ReturnNew<T>(a1, a2, ..., a_k) action returns a pointer to a new
|
|
// instance of type T, constructed on the heap with constructor arguments
|
|
// a1, a2, ..., and a_k. The caller assumes ownership of the returned value.
|
|
template <typename T, typename... Params>
|
|
internal::ReturnNewAction<T, typename std::decay<Params>::type...> ReturnNew(
|
|
Params&&... params) {
|
|
return {std::forward_as_tuple(std::forward<Params>(params)...)};
|
|
}
|
|
|
|
// Action ReturnArg<k>() returns the k-th argument of the mock function.
|
|
template <size_t k>
|
|
internal::ReturnArgAction<k> ReturnArg() {
|
|
return {};
|
|
}
|
|
|
|
// Action SaveArg<k>(pointer) saves the k-th (0-based) argument of the
|
|
// mock function to *pointer.
|
|
template <size_t k, typename Ptr>
|
|
internal::SaveArgAction<k, Ptr> SaveArg(Ptr pointer) {
|
|
return {pointer};
|
|
}
|
|
|
|
// Action SaveArgPointee<k>(pointer) saves the value pointed to
|
|
// by the k-th (0-based) argument of the mock function to *pointer.
|
|
template <size_t k, typename Ptr>
|
|
internal::SaveArgPointeeAction<k, Ptr> SaveArgPointee(Ptr pointer) {
|
|
return {pointer};
|
|
}
|
|
|
|
// Action SetArgReferee<k>(value) assigns 'value' to the variable
|
|
// referenced by the k-th (0-based) argument of the mock function.
|
|
template <size_t k, typename T>
|
|
internal::SetArgRefereeAction<k, typename std::decay<T>::type> SetArgReferee(
|
|
T&& value) {
|
|
return {std::forward<T>(value)};
|
|
}
|
|
|
|
// Action SetArrayArgument<k>(first, last) copies the elements in
|
|
// source range [first, last) to the array pointed to by the k-th
|
|
// (0-based) argument, which can be either a pointer or an
|
|
// iterator. The action does not take ownership of the elements in the
|
|
// source range.
|
|
template <size_t k, typename I1, typename I2>
|
|
internal::SetArrayArgumentAction<k, I1, I2> SetArrayArgument(I1 first,
|
|
I2 last) {
|
|
return {first, last};
|
|
}
|
|
|
|
// Action DeleteArg<k>() deletes the k-th (0-based) argument of the mock
|
|
// function.
|
|
template <size_t k>
|
|
internal::DeleteArgAction<k> DeleteArg() {
|
|
return {};
|
|
}
|
|
|
|
// This action returns the value pointed to by 'pointer'.
|
|
template <typename Ptr>
|
|
internal::ReturnPointeeAction<Ptr> ReturnPointee(Ptr pointer) {
|
|
return {pointer};
|
|
}
|
|
|
|
// Action Throw(exception) can be used in a mock function of any type
|
|
// to throw the given exception. Any copyable value can be thrown.
|
|
#if GTEST_HAS_EXCEPTIONS
|
|
template <typename T>
|
|
internal::ThrowAction<typename std::decay<T>::type> Throw(T&& exception) {
|
|
return {std::forward<T>(exception)};
|
|
}
|
|
#endif // GTEST_HAS_EXCEPTIONS
|
|
|
|
namespace internal {
|
|
|
|
// A macro from the ACTION* family (defined later in gmock-generated-actions.h)
|
|
// defines an action that can be used in a mock function. Typically,
|
|
// these actions only care about a subset of the arguments of the mock
|
|
// function. For example, if such an action only uses the second
|
|
// argument, it can be used in any mock function that takes >= 2
|
|
// arguments where the type of the second argument is compatible.
|
|
//
|
|
// Therefore, the action implementation must be prepared to take more
|
|
// arguments than it needs. The ExcessiveArg type is used to
|
|
// represent those excessive arguments. In order to keep the compiler
|
|
// error messages tractable, we define it in the testing namespace
|
|
// instead of testing::internal. However, this is an INTERNAL TYPE
|
|
// and subject to change without notice, so a user MUST NOT USE THIS
|
|
// TYPE DIRECTLY.
|
|
struct ExcessiveArg {};
|
|
|
|
// Builds an implementation of an Action<> for some particular signature, using
|
|
// a class defined by an ACTION* macro.
|
|
template <typename F, typename Impl> struct ActionImpl;
|
|
|
|
template <typename Impl>
|
|
struct ImplBase {
|
|
struct Holder {
|
|
// Allows each copy of the Action<> to get to the Impl.
|
|
explicit operator const Impl&() const { return *ptr; }
|
|
std::shared_ptr<Impl> ptr;
|
|
};
|
|
using type = typename std::conditional<std::is_constructible<Impl>::value,
|
|
Impl, Holder>::type;
|
|
};
|
|
|
|
template <typename R, typename... Args, typename Impl>
|
|
struct ActionImpl<R(Args...), Impl> : ImplBase<Impl>::type {
|
|
using Base = typename ImplBase<Impl>::type;
|
|
using function_type = R(Args...);
|
|
using args_type = std::tuple<Args...>;
|
|
|
|
ActionImpl() = default; // Only defined if appropriate for Base.
|
|
explicit ActionImpl(std::shared_ptr<Impl> impl) : Base{std::move(impl)} { }
|
|
|
|
R operator()(Args&&... arg) const {
|
|
static constexpr size_t kMaxArgs =
|
|
sizeof...(Args) <= 10 ? sizeof...(Args) : 10;
|
|
return Apply(MakeIndexSequence<kMaxArgs>{},
|
|
MakeIndexSequence<10 - kMaxArgs>{},
|
|
args_type{std::forward<Args>(arg)...});
|
|
}
|
|
|
|
template <std::size_t... arg_id, std::size_t... excess_id>
|
|
R Apply(IndexSequence<arg_id...>, IndexSequence<excess_id...>,
|
|
const args_type& args) const {
|
|
// Impl need not be specific to the signature of action being implemented;
|
|
// only the implementing function body needs to have all of the specific
|
|
// types instantiated. Up to 10 of the args that are provided by the
|
|
// args_type get passed, followed by a dummy of unspecified type for the
|
|
// remainder up to 10 explicit args.
|
|
static constexpr ExcessiveArg kExcessArg{};
|
|
return static_cast<const Impl&>(*this).template gmock_PerformImpl<
|
|
/*function_type=*/function_type, /*return_type=*/R,
|
|
/*args_type=*/args_type,
|
|
/*argN_type=*/typename std::tuple_element<arg_id, args_type>::type...>(
|
|
/*args=*/args, std::get<arg_id>(args)...,
|
|
((void)excess_id, kExcessArg)...);
|
|
}
|
|
};
|
|
|
|
// Stores a default-constructed Impl as part of the Action<>'s
|
|
// std::function<>. The Impl should be trivial to copy.
|
|
template <typename F, typename Impl>
|
|
::testing::Action<F> MakeAction() {
|
|
return ::testing::Action<F>(ActionImpl<F, Impl>());
|
|
}
|
|
|
|
// Stores just the one given instance of Impl.
|
|
template <typename F, typename Impl>
|
|
::testing::Action<F> MakeAction(std::shared_ptr<Impl> impl) {
|
|
return ::testing::Action<F>(ActionImpl<F, Impl>(std::move(impl)));
|
|
}
|
|
|
|
#define GMOCK_INTERNAL_ARG_UNUSED(i, data, el) \
|
|
, const arg##i##_type& arg##i GTEST_ATTRIBUTE_UNUSED_
|
|
#define GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_ \
|
|
const args_type& args GTEST_ATTRIBUTE_UNUSED_ GMOCK_PP_REPEAT( \
|
|
GMOCK_INTERNAL_ARG_UNUSED, , 10)
|
|
|
|
#define GMOCK_INTERNAL_ARG(i, data, el) , const arg##i##_type& arg##i
|
|
#define GMOCK_ACTION_ARG_TYPES_AND_NAMES_ \
|
|
const args_type& args GMOCK_PP_REPEAT(GMOCK_INTERNAL_ARG, , 10)
|
|
|
|
#define GMOCK_INTERNAL_TEMPLATE_ARG(i, data, el) , typename arg##i##_type
|
|
#define GMOCK_ACTION_TEMPLATE_ARGS_NAMES_ \
|
|
GMOCK_PP_TAIL(GMOCK_PP_REPEAT(GMOCK_INTERNAL_TEMPLATE_ARG, , 10))
|
|
|
|
#define GMOCK_INTERNAL_TYPENAME_PARAM(i, data, param) , typename param##_type
|
|
#define GMOCK_ACTION_TYPENAME_PARAMS_(params) \
|
|
GMOCK_PP_TAIL(GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_TYPENAME_PARAM, , params))
|
|
|
|
#define GMOCK_INTERNAL_TYPE_PARAM(i, data, param) , param##_type
|
|
#define GMOCK_ACTION_TYPE_PARAMS_(params) \
|
|
GMOCK_PP_TAIL(GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_TYPE_PARAM, , params))
|
|
|
|
#define GMOCK_INTERNAL_TYPE_GVALUE_PARAM(i, data, param) \
|
|
, param##_type gmock_p##i
|
|
#define GMOCK_ACTION_TYPE_GVALUE_PARAMS_(params) \
|
|
GMOCK_PP_TAIL(GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_TYPE_GVALUE_PARAM, , params))
|
|
|
|
#define GMOCK_INTERNAL_GVALUE_PARAM(i, data, param) \
|
|
, std::forward<param##_type>(gmock_p##i)
|
|
#define GMOCK_ACTION_GVALUE_PARAMS_(params) \
|
|
GMOCK_PP_TAIL(GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_GVALUE_PARAM, , params))
|
|
|
|
#define GMOCK_INTERNAL_INIT_PARAM(i, data, param) \
|
|
, param(::std::forward<param##_type>(gmock_p##i))
|
|
#define GMOCK_ACTION_INIT_PARAMS_(params) \
|
|
GMOCK_PP_TAIL(GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_INIT_PARAM, , params))
|
|
|
|
#define GMOCK_INTERNAL_FIELD_PARAM(i, data, param) param##_type param;
|
|
#define GMOCK_ACTION_FIELD_PARAMS_(params) \
|
|
GMOCK_PP_FOR_EACH(GMOCK_INTERNAL_FIELD_PARAM, , params)
|
|
|
|
#define GMOCK_INTERNAL_ACTION(name, full_name, params) \
|
|
template <GMOCK_ACTION_TYPENAME_PARAMS_(params)> \
|
|
class full_name { \
|
|
public: \
|
|
explicit full_name(GMOCK_ACTION_TYPE_GVALUE_PARAMS_(params)) \
|
|
: impl_(std::make_shared<gmock_Impl>( \
|
|
GMOCK_ACTION_GVALUE_PARAMS_(params))) { } \
|
|
full_name(const full_name&) = default; \
|
|
full_name(full_name&&) noexcept = default; \
|
|
template <typename F> \
|
|
operator ::testing::Action<F>() const { \
|
|
return ::testing::internal::MakeAction<F>(impl_); \
|
|
} \
|
|
private: \
|
|
class gmock_Impl { \
|
|
public: \
|
|
explicit gmock_Impl(GMOCK_ACTION_TYPE_GVALUE_PARAMS_(params)) \
|
|
: GMOCK_ACTION_INIT_PARAMS_(params) {} \
|
|
template <typename function_type, typename return_type, \
|
|
typename args_type, GMOCK_ACTION_TEMPLATE_ARGS_NAMES_> \
|
|
return_type gmock_PerformImpl(GMOCK_ACTION_ARG_TYPES_AND_NAMES_) const; \
|
|
GMOCK_ACTION_FIELD_PARAMS_(params) \
|
|
}; \
|
|
std::shared_ptr<const gmock_Impl> impl_; \
|
|
}; \
|
|
template <GMOCK_ACTION_TYPENAME_PARAMS_(params)> \
|
|
inline full_name<GMOCK_ACTION_TYPE_PARAMS_(params)> name( \
|
|
GMOCK_ACTION_TYPE_GVALUE_PARAMS_(params)) { \
|
|
return full_name<GMOCK_ACTION_TYPE_PARAMS_(params)>( \
|
|
GMOCK_ACTION_GVALUE_PARAMS_(params)); \
|
|
} \
|
|
template <GMOCK_ACTION_TYPENAME_PARAMS_(params)> \
|
|
template <typename function_type, typename return_type, typename args_type, \
|
|
GMOCK_ACTION_TEMPLATE_ARGS_NAMES_> \
|
|
return_type full_name<GMOCK_ACTION_TYPE_PARAMS_(params)>::gmock_Impl:: \
|
|
gmock_PerformImpl(GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
|
|
|
|
} // namespace internal
|
|
|
|
// Similar to GMOCK_INTERNAL_ACTION, but no bound parameters are stored.
|
|
#define ACTION(name) \
|
|
class name##Action { \
|
|
public: \
|
|
explicit name##Action() noexcept {} \
|
|
name##Action(const name##Action&) noexcept {} \
|
|
template <typename F> \
|
|
operator ::testing::Action<F>() const { \
|
|
return ::testing::internal::MakeAction<F, gmock_Impl>(); \
|
|
} \
|
|
private: \
|
|
class gmock_Impl { \
|
|
public: \
|
|
template <typename function_type, typename return_type, \
|
|
typename args_type, GMOCK_ACTION_TEMPLATE_ARGS_NAMES_> \
|
|
return_type gmock_PerformImpl(GMOCK_ACTION_ARG_TYPES_AND_NAMES_) const; \
|
|
}; \
|
|
}; \
|
|
inline name##Action name() GTEST_MUST_USE_RESULT_; \
|
|
inline name##Action name() { return name##Action(); } \
|
|
template <typename function_type, typename return_type, typename args_type, \
|
|
GMOCK_ACTION_TEMPLATE_ARGS_NAMES_> \
|
|
return_type name##Action::gmock_Impl::gmock_PerformImpl( \
|
|
GMOCK_ACTION_ARG_TYPES_AND_NAMES_UNUSED_) const
|
|
|
|
#define ACTION_P(name, ...) \
|
|
GMOCK_INTERNAL_ACTION(name, name##ActionP, (__VA_ARGS__))
|
|
|
|
#define ACTION_P2(name, ...) \
|
|
GMOCK_INTERNAL_ACTION(name, name##ActionP2, (__VA_ARGS__))
|
|
|
|
#define ACTION_P3(name, ...) \
|
|
GMOCK_INTERNAL_ACTION(name, name##ActionP3, (__VA_ARGS__))
|
|
|
|
#define ACTION_P4(name, ...) \
|
|
GMOCK_INTERNAL_ACTION(name, name##ActionP4, (__VA_ARGS__))
|
|
|
|
#define ACTION_P5(name, ...) \
|
|
GMOCK_INTERNAL_ACTION(name, name##ActionP5, (__VA_ARGS__))
|
|
|
|
#define ACTION_P6(name, ...) \
|
|
GMOCK_INTERNAL_ACTION(name, name##ActionP6, (__VA_ARGS__))
|
|
|
|
#define ACTION_P7(name, ...) \
|
|
GMOCK_INTERNAL_ACTION(name, name##ActionP7, (__VA_ARGS__))
|
|
|
|
#define ACTION_P8(name, ...) \
|
|
GMOCK_INTERNAL_ACTION(name, name##ActionP8, (__VA_ARGS__))
|
|
|
|
#define ACTION_P9(name, ...) \
|
|
GMOCK_INTERNAL_ACTION(name, name##ActionP9, (__VA_ARGS__))
|
|
|
|
#define ACTION_P10(name, ...) \
|
|
GMOCK_INTERNAL_ACTION(name, name##ActionP10, (__VA_ARGS__))
|
|
|
|
} // namespace testing
|
|
|
|
#ifdef _MSC_VER
|
|
# pragma warning(pop)
|
|
#endif
|
|
|
|
#endif // GOOGLEMOCK_INCLUDE_GMOCK_GMOCK_ACTIONS_H_
|