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85 lines
2.7 KiB
85 lines
2.7 KiB
1 year ago
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// 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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//
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// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
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#include "env/mock_env.h"
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#include <memory>
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#include <string>
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#include "rocksdb/env.h"
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#include "test_util/testharness.h"
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namespace ROCKSDB_NAMESPACE {
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class MockEnvTest : public testing::Test {
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public:
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MockEnv* env_;
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const EnvOptions soptions_;
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MockEnvTest() : env_(MockEnv::Create(Env::Default())) {}
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~MockEnvTest() override { delete env_; }
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};
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TEST_F(MockEnvTest, Corrupt) {
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const std::string kGood = "this is a good string, synced to disk";
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const std::string kCorrupted = "this part may be corrupted";
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const std::string kFileName = "/dir/f";
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std::unique_ptr<WritableFile> writable_file;
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ASSERT_OK(env_->NewWritableFile(kFileName, &writable_file, soptions_));
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ASSERT_OK(writable_file->Append(kGood));
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ASSERT_TRUE(writable_file->GetFileSize() == kGood.size());
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std::string scratch;
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scratch.resize(kGood.size() + kCorrupted.size() + 16);
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Slice result;
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std::unique_ptr<RandomAccessFile> rand_file;
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ASSERT_OK(env_->NewRandomAccessFile(kFileName, &rand_file, soptions_));
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ASSERT_OK(rand_file->Read(0, kGood.size(), &result, &(scratch[0])));
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ASSERT_EQ(result.compare(kGood), 0);
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// Sync + corrupt => no change
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ASSERT_OK(writable_file->Fsync());
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ASSERT_OK(dynamic_cast<MockEnv*>(env_)->CorruptBuffer(kFileName));
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result.clear();
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ASSERT_OK(rand_file->Read(0, kGood.size(), &result, &(scratch[0])));
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ASSERT_EQ(result.compare(kGood), 0);
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// Add new data and corrupt it
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ASSERT_OK(writable_file->Append(kCorrupted));
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ASSERT_TRUE(writable_file->GetFileSize() == kGood.size() + kCorrupted.size());
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result.clear();
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ASSERT_OK(
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rand_file->Read(kGood.size(), kCorrupted.size(), &result, &(scratch[0])));
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ASSERT_EQ(result.compare(kCorrupted), 0);
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// Corrupted
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ASSERT_OK(dynamic_cast<MockEnv*>(env_)->CorruptBuffer(kFileName));
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result.clear();
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ASSERT_OK(
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rand_file->Read(kGood.size(), kCorrupted.size(), &result, &(scratch[0])));
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ASSERT_NE(result.compare(kCorrupted), 0);
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}
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TEST_F(MockEnvTest, FakeSleeping) {
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int64_t now = 0;
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auto s = env_->GetCurrentTime(&now);
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ASSERT_OK(s);
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env_->SleepForMicroseconds(3 * 1000 * 1000);
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int64_t after_sleep = 0;
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s = env_->GetCurrentTime(&after_sleep);
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ASSERT_OK(s);
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auto delta = after_sleep - now;
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// this will be true unless test runs for 2 seconds
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ASSERT_TRUE(delta == 3 || delta == 4);
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}
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} // namespace ROCKSDB_NAMESPACE
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int main(int argc, char** argv) {
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ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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