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110 строки
3.2 KiB
110 строки
3.2 KiB
// Copyright (c) 2011 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 "leveldb/db.h"
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#include "db/memtable.h"
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#include "db/write_batch_internal.h"
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#include "leveldb/env.h"
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#include "util/logging.h"
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#include "util/testharness.h"
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namespace leveldb {
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static std::string PrintContents(WriteBatch* b) {
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InternalKeyComparator cmp(BytewiseComparator());
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MemTable mem(cmp);
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std::string state;
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Status s = WriteBatchInternal::InsertInto(b, &mem);
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Iterator* iter = mem.NewIterator();
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for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
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ParsedInternalKey ikey;
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ASSERT_TRUE(ParseInternalKey(iter->key(), &ikey));
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switch (ikey.type) {
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case kTypeValue:
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state.append("Put(");
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state.append(ikey.user_key.ToString());
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state.append(", ");
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state.append(iter->value().ToString());
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state.append(")");
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break;
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case kTypeLargeValueRef:
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state.append("PutRef(");
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state.append(ikey.user_key.ToString());
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state.append(", ");
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state.append(iter->value().ToString());
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state.append(")");
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break;
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case kTypeDeletion:
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state.append("Delete(");
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state.append(ikey.user_key.ToString());
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state.append(")");
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break;
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}
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state.append("@");
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state.append(NumberToString(ikey.sequence));
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}
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delete iter;
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if (!s.ok()) {
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state.append("ParseError()");
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}
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return state;
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}
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class WriteBatchTest { };
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TEST(WriteBatchTest, Empty) {
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WriteBatch batch;
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ASSERT_EQ("", PrintContents(&batch));
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ASSERT_EQ(0, WriteBatchInternal::Count(&batch));
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}
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TEST(WriteBatchTest, Multiple) {
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WriteBatch batch;
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batch.Put(Slice("foo"), Slice("bar"));
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batch.Delete(Slice("box"));
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batch.Put(Slice("baz"), Slice("boo"));
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WriteBatchInternal::SetSequence(&batch, 100);
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ASSERT_EQ(100, WriteBatchInternal::Sequence(&batch));
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ASSERT_EQ(3, WriteBatchInternal::Count(&batch));
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ASSERT_EQ("Put(baz, boo)@102"
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"Delete(box)@101"
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"Put(foo, bar)@100",
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PrintContents(&batch));
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}
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TEST(WriteBatchTest, PutIndirect) {
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WriteBatch batch;
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batch.Put(Slice("baz"), Slice("boo"));
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LargeValueRef h;
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for (int i = 0; i < LargeValueRef::ByteSize(); i++) {
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h.data[i] = (i < 20) ? 'a' : 'b';
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}
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WriteBatchInternal::PutLargeValueRef(&batch, Slice("foo"), h);
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WriteBatchInternal::SetSequence(&batch, 100);
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ASSERT_EQ(100, WriteBatchInternal::Sequence(&batch));
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ASSERT_EQ(2, WriteBatchInternal::Count(&batch));
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ASSERT_EQ("Put(baz, boo)@100"
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"PutRef(foo, aaaaaaaaaaaaaaaaaaaabbbbbbbbb)@101",
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PrintContents(&batch));
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}
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TEST(WriteBatchTest, Corruption) {
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WriteBatch batch;
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batch.Put(Slice("foo"), Slice("bar"));
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batch.Delete(Slice("box"));
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WriteBatchInternal::SetSequence(&batch, 200);
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Slice contents = WriteBatchInternal::Contents(&batch);
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WriteBatchInternal::SetContents(&batch,
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Slice(contents.data(),contents.size()-1));
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ASSERT_EQ("Put(foo, bar)@200"
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"ParseError()",
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PrintContents(&batch));
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}
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}
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int main(int argc, char** argv) {
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return leveldb::test::RunAllTests();
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}
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