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140 lines
5.0 KiB
140 lines
5.0 KiB
// Copyright (c) 2018 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include "util/logging.h"
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#include <limits>
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#include <string>
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#include "gtest/gtest.h"
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#include "leveldb/slice.h"
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namespace leveldb {
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TEST(Logging, NumberToString) {
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ASSERT_EQ("0", NumberToString(0));
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ASSERT_EQ("1", NumberToString(1));
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ASSERT_EQ("9", NumberToString(9));
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ASSERT_EQ("10", NumberToString(10));
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ASSERT_EQ("11", NumberToString(11));
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ASSERT_EQ("19", NumberToString(19));
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ASSERT_EQ("99", NumberToString(99));
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ASSERT_EQ("100", NumberToString(100));
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ASSERT_EQ("109", NumberToString(109));
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ASSERT_EQ("190", NumberToString(190));
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ASSERT_EQ("123", NumberToString(123));
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ASSERT_EQ("12345678", NumberToString(12345678));
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static_assert(std::numeric_limits<uint64_t>::max() == 18446744073709551615U,
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"Test consistency check");
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ASSERT_EQ("18446744073709551000", NumberToString(18446744073709551000U));
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ASSERT_EQ("18446744073709551600", NumberToString(18446744073709551600U));
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ASSERT_EQ("18446744073709551610", NumberToString(18446744073709551610U));
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ASSERT_EQ("18446744073709551614", NumberToString(18446744073709551614U));
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ASSERT_EQ("18446744073709551615", NumberToString(18446744073709551615U));
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}
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void ConsumeDecimalNumberRoundtripTest(uint64_t number,
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const std::string& padding = "") {
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std::string decimal_number = NumberToString(number);
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std::string input_string = decimal_number + padding;
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Slice input(input_string);
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Slice output = input;
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uint64_t result;
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ASSERT_TRUE(ConsumeDecimalNumber(&output, &result));
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ASSERT_EQ(number, result);
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ASSERT_EQ(decimal_number.size(), output.data() - input.data());
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ASSERT_EQ(padding.size(), output.size());
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}
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TEST(Logging, ConsumeDecimalNumberRoundtrip) {
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ConsumeDecimalNumberRoundtripTest(0);
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ConsumeDecimalNumberRoundtripTest(1);
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ConsumeDecimalNumberRoundtripTest(9);
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ConsumeDecimalNumberRoundtripTest(10);
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ConsumeDecimalNumberRoundtripTest(11);
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ConsumeDecimalNumberRoundtripTest(19);
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ConsumeDecimalNumberRoundtripTest(99);
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ConsumeDecimalNumberRoundtripTest(100);
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ConsumeDecimalNumberRoundtripTest(109);
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ConsumeDecimalNumberRoundtripTest(190);
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ConsumeDecimalNumberRoundtripTest(123);
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ASSERT_EQ("12345678", NumberToString(12345678));
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for (uint64_t i = 0; i < 100; ++i) {
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uint64_t large_number = std::numeric_limits<uint64_t>::max() - i;
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ConsumeDecimalNumberRoundtripTest(large_number);
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}
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}
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TEST(Logging, ConsumeDecimalNumberRoundtripWithPadding) {
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ConsumeDecimalNumberRoundtripTest(0, " ");
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ConsumeDecimalNumberRoundtripTest(1, "abc");
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ConsumeDecimalNumberRoundtripTest(9, "x");
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ConsumeDecimalNumberRoundtripTest(10, "_");
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ConsumeDecimalNumberRoundtripTest(11, std::string("\0\0\0", 3));
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ConsumeDecimalNumberRoundtripTest(19, "abc");
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ConsumeDecimalNumberRoundtripTest(99, "padding");
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ConsumeDecimalNumberRoundtripTest(100, " ");
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for (uint64_t i = 0; i < 100; ++i) {
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uint64_t large_number = std::numeric_limits<uint64_t>::max() - i;
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ConsumeDecimalNumberRoundtripTest(large_number, "pad");
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}
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}
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void ConsumeDecimalNumberOverflowTest(const std::string& input_string) {
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Slice input(input_string);
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Slice output = input;
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uint64_t result;
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ASSERT_EQ(false, ConsumeDecimalNumber(&output, &result));
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}
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TEST(Logging, ConsumeDecimalNumberOverflow) {
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static_assert(std::numeric_limits<uint64_t>::max() == 18446744073709551615U,
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"Test consistency check");
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ConsumeDecimalNumberOverflowTest("18446744073709551616");
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ConsumeDecimalNumberOverflowTest("18446744073709551617");
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ConsumeDecimalNumberOverflowTest("18446744073709551618");
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ConsumeDecimalNumberOverflowTest("18446744073709551619");
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ConsumeDecimalNumberOverflowTest("18446744073709551620");
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ConsumeDecimalNumberOverflowTest("18446744073709551621");
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ConsumeDecimalNumberOverflowTest("18446744073709551622");
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ConsumeDecimalNumberOverflowTest("18446744073709551623");
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ConsumeDecimalNumberOverflowTest("18446744073709551624");
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ConsumeDecimalNumberOverflowTest("18446744073709551625");
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ConsumeDecimalNumberOverflowTest("18446744073709551626");
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ConsumeDecimalNumberOverflowTest("18446744073709551700");
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ConsumeDecimalNumberOverflowTest("99999999999999999999");
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}
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void ConsumeDecimalNumberNoDigitsTest(const std::string& input_string) {
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Slice input(input_string);
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Slice output = input;
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uint64_t result;
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ASSERT_EQ(false, ConsumeDecimalNumber(&output, &result));
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ASSERT_EQ(input.data(), output.data());
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ASSERT_EQ(input.size(), output.size());
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}
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TEST(Logging, ConsumeDecimalNumberNoDigits) {
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ConsumeDecimalNumberNoDigitsTest("");
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ConsumeDecimalNumberNoDigitsTest(" ");
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ConsumeDecimalNumberNoDigitsTest("a");
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ConsumeDecimalNumberNoDigitsTest(" 123");
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ConsumeDecimalNumberNoDigitsTest("a123");
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ConsumeDecimalNumberNoDigitsTest(std::string("\000123", 4));
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ConsumeDecimalNumberNoDigitsTest(std::string("\177123", 4));
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ConsumeDecimalNumberNoDigitsTest(std::string("\377123", 4));
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}
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} // namespace leveldb
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