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-rw-r--r--helpers/memenv/memenv_test.cc232
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diff --git a/helpers/memenv/memenv_test.cc b/helpers/memenv/memenv_test.cc
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+++ b/helpers/memenv/memenv_test.cc
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+// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file. See the AUTHORS file for names of contributors.
+
+#include "helpers/memenv/memenv.h"
+
+#include "db/db_impl.h"
+#include "leveldb/db.h"
+#include "leveldb/env.h"
+#include "util/testharness.h"
+#include <string>
+#include <vector>
+
+namespace leveldb {
+
+class MemEnvTest {
+ public:
+ Env* env_;
+
+ MemEnvTest()
+ : env_(NewMemEnv(Env::Default())) {
+ }
+ ~MemEnvTest() {
+ delete env_;
+ }
+};
+
+TEST(MemEnvTest, Basics) {
+ uint64_t file_size;
+ WritableFile* writable_file;
+ std::vector<std::string> children;
+
+ ASSERT_OK(env_->CreateDir("/dir"));
+
+ // Check that the directory is empty.
+ ASSERT_TRUE(!env_->FileExists("/dir/non_existent"));
+ ASSERT_TRUE(!env_->GetFileSize("/dir/non_existent", &file_size).ok());
+ ASSERT_OK(env_->GetChildren("/dir", &children));
+ ASSERT_EQ(0, children.size());
+
+ // Create a file.
+ ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file));
+ delete writable_file;
+
+ // Check that the file exists.
+ ASSERT_TRUE(env_->FileExists("/dir/f"));
+ ASSERT_OK(env_->GetFileSize("/dir/f", &file_size));
+ ASSERT_EQ(0, file_size);
+ ASSERT_OK(env_->GetChildren("/dir", &children));
+ ASSERT_EQ(1, children.size());
+ ASSERT_EQ("f", children[0]);
+
+ // Write to the file.
+ ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file));
+ ASSERT_OK(writable_file->Append("abc"));
+ delete writable_file;
+
+ // Check for expected size.
+ ASSERT_OK(env_->GetFileSize("/dir/f", &file_size));
+ ASSERT_EQ(3, file_size);
+
+ // Check that renaming works.
+ ASSERT_TRUE(!env_->RenameFile("/dir/non_existent", "/dir/g").ok());
+ ASSERT_OK(env_->RenameFile("/dir/f", "/dir/g"));
+ ASSERT_TRUE(!env_->FileExists("/dir/f"));
+ ASSERT_TRUE(env_->FileExists("/dir/g"));
+ ASSERT_OK(env_->GetFileSize("/dir/g", &file_size));
+ ASSERT_EQ(3, file_size);
+
+ // Check that opening non-existent file fails.
+ SequentialFile* seq_file;
+ RandomAccessFile* rand_file;
+ ASSERT_TRUE(!env_->NewSequentialFile("/dir/non_existent", &seq_file).ok());
+ ASSERT_TRUE(!seq_file);
+ ASSERT_TRUE(!env_->NewRandomAccessFile("/dir/non_existent", &rand_file).ok());
+ ASSERT_TRUE(!rand_file);
+
+ // Check that deleting works.
+ ASSERT_TRUE(!env_->DeleteFile("/dir/non_existent").ok());
+ ASSERT_OK(env_->DeleteFile("/dir/g"));
+ ASSERT_TRUE(!env_->FileExists("/dir/g"));
+ ASSERT_OK(env_->GetChildren("/dir", &children));
+ ASSERT_EQ(0, children.size());
+ ASSERT_OK(env_->DeleteDir("/dir"));
+}
+
+TEST(MemEnvTest, ReadWrite) {
+ WritableFile* writable_file;
+ SequentialFile* seq_file;
+ RandomAccessFile* rand_file;
+ Slice result;
+ char scratch[100];
+
+ ASSERT_OK(env_->CreateDir("/dir"));
+
+ ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file));
+ ASSERT_OK(writable_file->Append("hello "));
+ ASSERT_OK(writable_file->Append("world"));
+ delete writable_file;
+
+ // Read sequentially.
+ ASSERT_OK(env_->NewSequentialFile("/dir/f", &seq_file));
+ ASSERT_OK(seq_file->Read(5, &result, scratch)); // Read "hello".
+ ASSERT_EQ(0, result.compare("hello"));
+ ASSERT_OK(seq_file->Skip(1));
+ ASSERT_OK(seq_file->Read(1000, &result, scratch)); // Read "world".
+ ASSERT_EQ(0, result.compare("world"));
+ ASSERT_OK(seq_file->Read(1000, &result, scratch)); // Try reading past EOF.
+ ASSERT_EQ(0, result.size());
+ ASSERT_OK(seq_file->Skip(100)); // Try to skip past end of file.
+ ASSERT_OK(seq_file->Read(1000, &result, scratch));
+ ASSERT_EQ(0, result.size());
+ delete seq_file;
+
+ // Random reads.
+ ASSERT_OK(env_->NewRandomAccessFile("/dir/f", &rand_file));
+ ASSERT_OK(rand_file->Read(6, 5, &result, scratch)); // Read "world".
+ ASSERT_EQ(0, result.compare("world"));
+ ASSERT_OK(rand_file->Read(0, 5, &result, scratch)); // Read "hello".
+ ASSERT_EQ(0, result.compare("hello"));
+ ASSERT_OK(rand_file->Read(10, 100, &result, scratch)); // Read "d".
+ ASSERT_EQ(0, result.compare("d"));
+
+ // Too high offset.
+ ASSERT_TRUE(!rand_file->Read(1000, 5, &result, scratch).ok());
+ delete rand_file;
+}
+
+TEST(MemEnvTest, Locks) {
+ FileLock* lock;
+
+ // These are no-ops, but we test they return success.
+ ASSERT_OK(env_->LockFile("some file", &lock));
+ ASSERT_OK(env_->UnlockFile(lock));
+}
+
+TEST(MemEnvTest, Misc) {
+ std::string test_dir;
+ ASSERT_OK(env_->GetTestDirectory(&test_dir));
+ ASSERT_TRUE(!test_dir.empty());
+
+ WritableFile* writable_file;
+ ASSERT_OK(env_->NewWritableFile("/a/b", &writable_file));
+
+ // These are no-ops, but we test they return success.
+ ASSERT_OK(writable_file->Sync());
+ ASSERT_OK(writable_file->Flush());
+ ASSERT_OK(writable_file->Close());
+ delete writable_file;
+}
+
+TEST(MemEnvTest, LargeWrite) {
+ const size_t kWriteSize = 300 * 1024;
+ char* scratch = new char[kWriteSize * 2];
+
+ std::string write_data;
+ for (size_t i = 0; i < kWriteSize; ++i) {
+ write_data.append(1, static_cast<char>(i));
+ }
+
+ WritableFile* writable_file;
+ ASSERT_OK(env_->NewWritableFile("/dir/f", &writable_file));
+ ASSERT_OK(writable_file->Append("foo"));
+ ASSERT_OK(writable_file->Append(write_data));
+ delete writable_file;
+
+ SequentialFile* seq_file;
+ Slice result;
+ ASSERT_OK(env_->NewSequentialFile("/dir/f", &seq_file));
+ ASSERT_OK(seq_file->Read(3, &result, scratch)); // Read "foo".
+ ASSERT_EQ(0, result.compare("foo"));
+
+ size_t read = 0;
+ std::string read_data;
+ while (read < kWriteSize) {
+ ASSERT_OK(seq_file->Read(kWriteSize - read, &result, scratch));
+ read_data.append(result.data(), result.size());
+ read += result.size();
+ }
+ ASSERT_TRUE(write_data == read_data);
+ delete seq_file;
+ delete [] scratch;
+}
+
+TEST(MemEnvTest, DBTest) {
+ Options options;
+ options.create_if_missing = true;
+ options.env = env_;
+ DB* db;
+
+ const Slice keys[] = {Slice("aaa"), Slice("bbb"), Slice("ccc")};
+ const Slice vals[] = {Slice("foo"), Slice("bar"), Slice("baz")};
+
+ ASSERT_OK(DB::Open(options, "/dir/db", &db));
+ for (size_t i = 0; i < 3; ++i) {
+ ASSERT_OK(db->Put(WriteOptions(), keys[i], vals[i]));
+ }
+
+ for (size_t i = 0; i < 3; ++i) {
+ std::string res;
+ ASSERT_OK(db->Get(ReadOptions(), keys[i], &res));
+ ASSERT_TRUE(res == vals[i]);
+ }
+
+ Iterator* iterator = db->NewIterator(ReadOptions());
+ iterator->SeekToFirst();
+ for (size_t i = 0; i < 3; ++i) {
+ ASSERT_TRUE(iterator->Valid());
+ ASSERT_TRUE(keys[i] == iterator->key());
+ ASSERT_TRUE(vals[i] == iterator->value());
+ iterator->Next();
+ }
+ ASSERT_TRUE(!iterator->Valid());
+ delete iterator;
+
+ DBImpl* dbi = reinterpret_cast<DBImpl*>(db);
+ ASSERT_OK(dbi->TEST_CompactMemTable());
+
+ for (size_t i = 0; i < 3; ++i) {
+ std::string res;
+ ASSERT_OK(db->Get(ReadOptions(), keys[i], &res));
+ ASSERT_TRUE(res == vals[i]);
+ }
+
+ delete db;
+}
+
+} // namespace leveldb
+
+int main(int argc, char** argv) {
+ return leveldb::test::RunAllTests();
+}