mirror of https://github.com/facebook/rocksdb.git
224 lines
7.1 KiB
C++
224 lines
7.1 KiB
C++
// Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
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// Copyright (c) 2015, Red Hat, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#ifndef ROCKSDB_LITE
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#include "rocksdb/utilities/env_mirror.h"
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#include "env/mock_env.h"
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#include "test_util/testharness.h"
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namespace ROCKSDB_NAMESPACE {
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class EnvMirrorTest : public testing::Test {
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public:
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Env* default_;
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MockEnv* a_, *b_;
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EnvMirror* env_;
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const EnvOptions soptions_;
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EnvMirrorTest()
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: default_(Env::Default()),
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a_(new MockEnv(default_)),
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b_(new MockEnv(default_)),
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env_(new EnvMirror(a_, b_)) {}
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~EnvMirrorTest() {
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delete env_;
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delete a_;
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delete b_;
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}
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};
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TEST_F(EnvMirrorTest, Basics) {
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uint64_t file_size;
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std::unique_ptr<WritableFile> writable_file;
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std::vector<std::string> children;
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ASSERT_OK(env_->CreateDir("/dir"));
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// Check that the directory is empty.
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ASSERT_EQ(Status::NotFound(), env_->FileExists("/dir/non_existent"));
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ASSERT_TRUE(!env_->GetFileSize("/dir/non_existent", &file_size).ok());
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ASSERT_OK(env_->GetChildren("/dir", &children));
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ASSERT_EQ(0U, children.size());
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// Create a file.
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ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
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writable_file.reset();
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// Check that the file exists.
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ASSERT_OK(env_->FileExists("/dir/f"));
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ASSERT_OK(a_->FileExists("/dir/f"));
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ASSERT_OK(b_->FileExists("/dir/f"));
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ASSERT_OK(env_->GetFileSize("/dir/f", &file_size));
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ASSERT_EQ(0U, file_size);
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ASSERT_OK(env_->GetChildren("/dir", &children));
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ASSERT_EQ(1U, children.size());
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ASSERT_EQ("f", children[0]);
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ASSERT_OK(a_->GetChildren("/dir", &children));
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ASSERT_EQ(1U, children.size());
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ASSERT_EQ("f", children[0]);
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ASSERT_OK(b_->GetChildren("/dir", &children));
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ASSERT_EQ(1U, children.size());
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ASSERT_EQ("f", children[0]);
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// Write to the file.
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ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
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ASSERT_OK(writable_file->Append("abc"));
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writable_file.reset();
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// Check for expected size.
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ASSERT_OK(env_->GetFileSize("/dir/f", &file_size));
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ASSERT_EQ(3U, file_size);
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ASSERT_OK(a_->GetFileSize("/dir/f", &file_size));
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ASSERT_EQ(3U, file_size);
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ASSERT_OK(b_->GetFileSize("/dir/f", &file_size));
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ASSERT_EQ(3U, file_size);
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// Check that renaming works.
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ASSERT_TRUE(!env_->RenameFile("/dir/non_existent", "/dir/g").ok());
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ASSERT_OK(env_->RenameFile("/dir/f", "/dir/g"));
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ASSERT_EQ(Status::NotFound(), env_->FileExists("/dir/f"));
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ASSERT_OK(env_->FileExists("/dir/g"));
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ASSERT_OK(env_->GetFileSize("/dir/g", &file_size));
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ASSERT_EQ(3U, file_size);
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ASSERT_OK(a_->FileExists("/dir/g"));
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ASSERT_OK(a_->GetFileSize("/dir/g", &file_size));
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ASSERT_EQ(3U, file_size);
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ASSERT_OK(b_->FileExists("/dir/g"));
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ASSERT_OK(b_->GetFileSize("/dir/g", &file_size));
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ASSERT_EQ(3U, file_size);
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// Check that opening non-existent file fails.
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std::unique_ptr<SequentialFile> seq_file;
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std::unique_ptr<RandomAccessFile> rand_file;
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ASSERT_TRUE(
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!env_->NewSequentialFile("/dir/non_existent", &seq_file, soptions_).ok());
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ASSERT_TRUE(!seq_file);
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ASSERT_TRUE(!env_->NewRandomAccessFile("/dir/non_existent", &rand_file,
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soptions_).ok());
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ASSERT_TRUE(!rand_file);
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// Check that deleting works.
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ASSERT_TRUE(!env_->DeleteFile("/dir/non_existent").ok());
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ASSERT_OK(env_->DeleteFile("/dir/g"));
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ASSERT_EQ(Status::NotFound(), env_->FileExists("/dir/g"));
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ASSERT_OK(env_->GetChildren("/dir", &children));
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ASSERT_EQ(0U, children.size());
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ASSERT_OK(env_->DeleteDir("/dir"));
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}
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TEST_F(EnvMirrorTest, ReadWrite) {
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std::unique_ptr<WritableFile> writable_file;
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std::unique_ptr<SequentialFile> seq_file;
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std::unique_ptr<RandomAccessFile> rand_file;
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Slice result;
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char scratch[100];
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ASSERT_OK(env_->CreateDir("/dir"));
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ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
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ASSERT_OK(writable_file->Append("hello "));
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ASSERT_OK(writable_file->Append("world"));
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writable_file.reset();
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// Read sequentially.
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ASSERT_OK(env_->NewSequentialFile("/dir/f", &seq_file, soptions_));
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ASSERT_OK(seq_file->Read(5, &result, scratch)); // Read "hello".
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ASSERT_EQ(0, result.compare("hello"));
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ASSERT_OK(seq_file->Skip(1));
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ASSERT_OK(seq_file->Read(1000, &result, scratch)); // Read "world".
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ASSERT_EQ(0, result.compare("world"));
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ASSERT_OK(seq_file->Read(1000, &result, scratch)); // Try reading past EOF.
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ASSERT_EQ(0U, result.size());
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ASSERT_OK(seq_file->Skip(100)); // Try to skip past end of file.
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ASSERT_OK(seq_file->Read(1000, &result, scratch));
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ASSERT_EQ(0U, result.size());
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// Random reads.
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ASSERT_OK(env_->NewRandomAccessFile("/dir/f", &rand_file, soptions_));
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ASSERT_OK(rand_file->Read(6, 5, &result, scratch)); // Read "world".
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ASSERT_EQ(0, result.compare("world"));
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ASSERT_OK(rand_file->Read(0, 5, &result, scratch)); // Read "hello".
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ASSERT_EQ(0, result.compare("hello"));
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ASSERT_OK(rand_file->Read(10, 100, &result, scratch)); // Read "d".
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ASSERT_EQ(0, result.compare("d"));
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// Too high offset.
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ASSERT_TRUE(!rand_file->Read(1000, 5, &result, scratch).ok());
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}
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TEST_F(EnvMirrorTest, Locks) {
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FileLock* lock;
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// These are no-ops, but we test they return success.
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ASSERT_OK(env_->LockFile("some file", &lock));
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ASSERT_OK(env_->UnlockFile(lock));
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}
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TEST_F(EnvMirrorTest, Misc) {
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std::string test_dir;
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ASSERT_OK(env_->GetTestDirectory(&test_dir));
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ASSERT_TRUE(!test_dir.empty());
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std::unique_ptr<WritableFile> writable_file;
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ASSERT_OK(env_->NewWritableFile("/a/b", &writable_file, soptions_));
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// These are no-ops, but we test they return success.
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ASSERT_OK(writable_file->Sync());
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ASSERT_OK(writable_file->Flush());
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ASSERT_OK(writable_file->Close());
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writable_file.reset();
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}
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TEST_F(EnvMirrorTest, LargeWrite) {
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const size_t kWriteSize = 300 * 1024;
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char* scratch = new char[kWriteSize * 2];
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std::string write_data;
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for (size_t i = 0; i < kWriteSize; ++i) {
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write_data.append(1, static_cast<char>(i));
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}
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std::unique_ptr<WritableFile> writable_file;
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ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file, soptions_));
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ASSERT_OK(writable_file->Append("foo"));
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ASSERT_OK(writable_file->Append(write_data));
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writable_file.reset();
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std::unique_ptr<SequentialFile> seq_file;
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Slice result;
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ASSERT_OK(env_->NewSequentialFile("/dir/f", &seq_file, soptions_));
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ASSERT_OK(seq_file->Read(3, &result, scratch)); // Read "foo".
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ASSERT_EQ(0, result.compare("foo"));
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size_t read = 0;
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std::string read_data;
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while (read < kWriteSize) {
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ASSERT_OK(seq_file->Read(kWriteSize - read, &result, scratch));
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read_data.append(result.data(), result.size());
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read += result.size();
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}
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ASSERT_TRUE(write_data == read_data);
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delete[] scratch;
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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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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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#else
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#include <stdio.h>
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int main(int argc, char** argv) {
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fprintf(stderr, "SKIPPED as EnvMirror is not supported in ROCKSDB_LITE\n");
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return 0;
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}
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#endif // !ROCKSDB_LITE
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