Summary: gtest does not use exceptions to fail a unit test by design, and `ASSERT*`s are implemented using `return`. As a consequence we cannot use `ASSERT*` in a function that does not return `void` value ([[ https://code.google.com/p/googletest/wiki/AdvancedGuide#Assertion_Placement | 1]]), and have to fix our existing code. This diff does this in a generic way, with no manual changes. In order to detect all existing `ASSERT*` that are used in functions that doesn't return void value, I change the code to generate compile errors for such cases. In `util/testharness.h` I defined `EXPECT*` assertions, the same way as `ASSERT*`, and redefined `ASSERT*` to return `void`. Then executed: ```lang=bash % USE_CLANG=1 make all -j55 -k 2> build.log % perl -naF: -e 'print "-- -number=".$F[1]." ".$F[0]."\n" if /: error:/' \ build.log | xargs -L 1 perl -spi -e 's/ASSERT/EXPECT/g if $. == $number' % make format ``` After that I reverted back change to `ASSERT*` in `util/testharness.h`. But preserved introduced `EXPECT*`, which is the same as `ASSERT*`. This will be deleted once switched to gtest. This diff is independent and contains manual changes only in `util/testharness.h`. Test Plan: Make sure all tests are passing. ```lang=bash % USE_CLANG=1 make check ``` Reviewers: igor, lgalanis, sdong, yufei.zhu, rven, meyering Reviewed By: meyering Subscribers: dhruba, leveldb Differential Revision: https://reviews.facebook.net/D33333
690 lines
18 KiB
C++
690 lines
18 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under the BSD-style license found in the
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// LICENSE file in the root directory of this source tree. An additional grant
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// of patent rights can be found in the PATENTS file in the same directory.
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//
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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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#include "db/log_reader.h"
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#include "db/log_writer.h"
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#include "rocksdb/env.h"
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#include "util/coding.h"
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#include "util/crc32c.h"
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#include "util/random.h"
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#include "util/testharness.h"
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namespace rocksdb {
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namespace log {
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// Construct a string of the specified length made out of the supplied
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// partial string.
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static std::string BigString(const std::string& partial_string, size_t n) {
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std::string result;
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while (result.size() < n) {
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result.append(partial_string);
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}
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result.resize(n);
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return result;
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}
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// Construct a string from a number
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static std::string NumberString(int n) {
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char buf[50];
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snprintf(buf, sizeof(buf), "%d.", n);
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return std::string(buf);
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}
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// Return a skewed potentially long string
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static std::string RandomSkewedString(int i, Random* rnd) {
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return BigString(NumberString(i), rnd->Skewed(17));
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}
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class LogTest {
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private:
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class StringDest : public WritableFile {
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public:
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std::string contents_;
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explicit StringDest(Slice& reader_contents) :
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WritableFile(),
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contents_(""),
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reader_contents_(reader_contents),
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last_flush_(0) {
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reader_contents_ = Slice(contents_.data(), 0);
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};
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virtual Status Close() override { return Status::OK(); }
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virtual Status Flush() override {
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EXPECT_TRUE(reader_contents_.size() <= last_flush_);
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size_t offset = last_flush_ - reader_contents_.size();
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reader_contents_ = Slice(
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contents_.data() + offset,
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contents_.size() - offset);
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last_flush_ = contents_.size();
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return Status::OK();
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}
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virtual Status Sync() override { return Status::OK(); }
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virtual Status Append(const Slice& slice) override {
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contents_.append(slice.data(), slice.size());
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return Status::OK();
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}
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void Drop(size_t bytes) {
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contents_.resize(contents_.size() - bytes);
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reader_contents_ = Slice(
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reader_contents_.data(), reader_contents_.size() - bytes);
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last_flush_ = contents_.size();
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}
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private:
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Slice& reader_contents_;
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size_t last_flush_;
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};
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class StringSource : public SequentialFile {
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public:
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Slice& contents_;
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bool force_error_;
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size_t force_error_position_;
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bool force_eof_;
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size_t force_eof_position_;
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bool returned_partial_;
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explicit StringSource(Slice& contents) :
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contents_(contents),
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force_error_(false),
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force_error_position_(0),
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force_eof_(false),
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force_eof_position_(0),
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returned_partial_(false) { }
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virtual Status Read(size_t n, Slice* result, char* scratch) override {
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EXPECT_TRUE(!returned_partial_) << "must not Read() after eof/error";
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if (force_error_) {
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if (force_error_position_ >= n) {
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force_error_position_ -= n;
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} else {
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*result = Slice(contents_.data(), force_error_position_);
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contents_.remove_prefix(force_error_position_);
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force_error_ = false;
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returned_partial_ = true;
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return Status::Corruption("read error");
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}
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}
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if (contents_.size() < n) {
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n = contents_.size();
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returned_partial_ = true;
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}
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if (force_eof_) {
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if (force_eof_position_ >= n) {
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force_eof_position_ -= n;
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} else {
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force_eof_ = false;
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n = force_eof_position_;
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returned_partial_ = true;
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}
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}
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// By using scratch we ensure that caller has control over the
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// lifetime of result.data()
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memcpy(scratch, contents_.data(), n);
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*result = Slice(scratch, n);
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contents_.remove_prefix(n);
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return Status::OK();
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}
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virtual Status Skip(uint64_t n) override {
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if (n > contents_.size()) {
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contents_.clear();
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return Status::NotFound("in-memory file skipepd past end");
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}
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contents_.remove_prefix(n);
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return Status::OK();
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}
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};
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class ReportCollector : public Reader::Reporter {
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public:
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size_t dropped_bytes_;
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std::string message_;
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ReportCollector() : dropped_bytes_(0) { }
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virtual void Corruption(size_t bytes, const Status& status) override {
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dropped_bytes_ += bytes;
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message_.append(status.ToString());
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}
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};
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std::string& dest_contents() {
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auto dest = dynamic_cast<StringDest*>(writer_.file());
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assert(dest);
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return dest->contents_;
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}
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const std::string& dest_contents() const {
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auto dest = dynamic_cast<const StringDest*>(writer_.file());
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assert(dest);
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return dest->contents_;
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}
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void reset_source_contents() {
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auto src = dynamic_cast<StringSource*>(reader_.file());
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assert(src);
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src->contents_ = dest_contents();
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}
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Slice reader_contents_;
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unique_ptr<StringDest> dest_holder_;
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unique_ptr<StringSource> source_holder_;
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ReportCollector report_;
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Writer writer_;
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Reader reader_;
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// Record metadata for testing initial offset functionality
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static size_t initial_offset_record_sizes_[];
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static uint64_t initial_offset_last_record_offsets_[];
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public:
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LogTest() : reader_contents_(),
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dest_holder_(new StringDest(reader_contents_)),
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source_holder_(new StringSource(reader_contents_)),
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writer_(std::move(dest_holder_)),
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reader_(std::move(source_holder_), &report_, true/*checksum*/,
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0/*initial_offset*/) {
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}
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void Write(const std::string& msg) {
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writer_.AddRecord(Slice(msg));
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}
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size_t WrittenBytes() const {
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return dest_contents().size();
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}
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std::string Read() {
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std::string scratch;
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Slice record;
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if (reader_.ReadRecord(&record, &scratch)) {
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return record.ToString();
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} else {
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return "EOF";
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}
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}
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void IncrementByte(int offset, int delta) {
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dest_contents()[offset] += delta;
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}
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void SetByte(int offset, char new_byte) {
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dest_contents()[offset] = new_byte;
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}
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void ShrinkSize(int bytes) {
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auto dest = dynamic_cast<StringDest*>(writer_.file());
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assert(dest);
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dest->Drop(bytes);
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}
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void FixChecksum(int header_offset, int len) {
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// Compute crc of type/len/data
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uint32_t crc = crc32c::Value(&dest_contents()[header_offset+6], 1 + len);
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crc = crc32c::Mask(crc);
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EncodeFixed32(&dest_contents()[header_offset], crc);
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}
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void ForceError(size_t position = 0) {
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auto src = dynamic_cast<StringSource*>(reader_.file());
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src->force_error_ = true;
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src->force_error_position_ = position;
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}
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size_t DroppedBytes() const {
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return report_.dropped_bytes_;
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}
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std::string ReportMessage() const {
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return report_.message_;
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}
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void ForceEOF(size_t position = 0) {
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auto src = dynamic_cast<StringSource*>(reader_.file());
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src->force_eof_ = true;
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src->force_eof_position_ = position;
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}
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void UnmarkEOF() {
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auto src = dynamic_cast<StringSource*>(reader_.file());
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src->returned_partial_ = false;
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reader_.UnmarkEOF();
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}
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bool IsEOF() {
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return reader_.IsEOF();
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}
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// Returns OK iff recorded error message contains "msg"
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std::string MatchError(const std::string& msg) const {
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if (report_.message_.find(msg) == std::string::npos) {
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return report_.message_;
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} else {
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return "OK";
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}
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}
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void WriteInitialOffsetLog() {
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for (int i = 0; i < 4; i++) {
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std::string record(initial_offset_record_sizes_[i],
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static_cast<char>('a' + i));
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Write(record);
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}
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}
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void CheckOffsetPastEndReturnsNoRecords(uint64_t offset_past_end) {
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WriteInitialOffsetLog();
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unique_ptr<StringSource> source(new StringSource(reader_contents_));
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unique_ptr<Reader> offset_reader(
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new Reader(std::move(source), &report_, true/*checksum*/,
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WrittenBytes() + offset_past_end));
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Slice record;
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std::string scratch;
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ASSERT_TRUE(!offset_reader->ReadRecord(&record, &scratch));
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}
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void CheckInitialOffsetRecord(uint64_t initial_offset,
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int expected_record_offset) {
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WriteInitialOffsetLog();
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unique_ptr<StringSource> source(new StringSource(reader_contents_));
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unique_ptr<Reader> offset_reader(
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new Reader(std::move(source), &report_, true/*checksum*/,
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initial_offset));
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Slice record;
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std::string scratch;
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ASSERT_TRUE(offset_reader->ReadRecord(&record, &scratch));
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ASSERT_EQ(initial_offset_record_sizes_[expected_record_offset],
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record.size());
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ASSERT_EQ(initial_offset_last_record_offsets_[expected_record_offset],
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offset_reader->LastRecordOffset());
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ASSERT_EQ((char)('a' + expected_record_offset), record.data()[0]);
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}
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};
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size_t LogTest::initial_offset_record_sizes_[] =
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{10000, // Two sizable records in first block
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10000,
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2 * log::kBlockSize - 1000, // Span three blocks
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1};
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uint64_t LogTest::initial_offset_last_record_offsets_[] =
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{0,
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kHeaderSize + 10000,
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2 * (kHeaderSize + 10000),
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2 * (kHeaderSize + 10000) +
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(2 * log::kBlockSize - 1000) + 3 * kHeaderSize};
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TEST(LogTest, Empty) {
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ASSERT_EQ("EOF", Read());
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}
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TEST(LogTest, ReadWrite) {
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Write("foo");
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Write("bar");
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Write("");
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Write("xxxx");
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ASSERT_EQ("foo", Read());
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ASSERT_EQ("bar", Read());
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ASSERT_EQ("", Read());
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ASSERT_EQ("xxxx", Read());
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ASSERT_EQ("EOF", Read());
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ASSERT_EQ("EOF", Read()); // Make sure reads at eof work
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}
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TEST(LogTest, ManyBlocks) {
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for (int i = 0; i < 100000; i++) {
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Write(NumberString(i));
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}
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for (int i = 0; i < 100000; i++) {
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ASSERT_EQ(NumberString(i), Read());
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}
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ASSERT_EQ("EOF", Read());
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}
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TEST(LogTest, Fragmentation) {
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Write("small");
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Write(BigString("medium", 50000));
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Write(BigString("large", 100000));
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ASSERT_EQ("small", Read());
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ASSERT_EQ(BigString("medium", 50000), Read());
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ASSERT_EQ(BigString("large", 100000), Read());
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ASSERT_EQ("EOF", Read());
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}
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TEST(LogTest, MarginalTrailer) {
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// Make a trailer that is exactly the same length as an empty record.
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const int n = kBlockSize - 2*kHeaderSize;
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Write(BigString("foo", n));
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ASSERT_EQ((unsigned int)(kBlockSize - kHeaderSize), WrittenBytes());
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Write("");
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Write("bar");
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ASSERT_EQ(BigString("foo", n), Read());
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ASSERT_EQ("", Read());
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ASSERT_EQ("bar", Read());
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ASSERT_EQ("EOF", Read());
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}
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TEST(LogTest, MarginalTrailer2) {
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// Make a trailer that is exactly the same length as an empty record.
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const int n = kBlockSize - 2*kHeaderSize;
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Write(BigString("foo", n));
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ASSERT_EQ((unsigned int)(kBlockSize - kHeaderSize), WrittenBytes());
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Write("bar");
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ASSERT_EQ(BigString("foo", n), Read());
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ASSERT_EQ("bar", Read());
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ASSERT_EQ("EOF", Read());
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ASSERT_EQ(0U, DroppedBytes());
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ASSERT_EQ("", ReportMessage());
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}
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TEST(LogTest, ShortTrailer) {
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const int n = kBlockSize - 2*kHeaderSize + 4;
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Write(BigString("foo", n));
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ASSERT_EQ((unsigned int)(kBlockSize - kHeaderSize + 4), WrittenBytes());
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Write("");
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Write("bar");
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ASSERT_EQ(BigString("foo", n), Read());
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ASSERT_EQ("", Read());
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ASSERT_EQ("bar", Read());
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ASSERT_EQ("EOF", Read());
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}
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TEST(LogTest, AlignedEof) {
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const int n = kBlockSize - 2*kHeaderSize + 4;
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Write(BigString("foo", n));
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ASSERT_EQ((unsigned int)(kBlockSize - kHeaderSize + 4), WrittenBytes());
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ASSERT_EQ(BigString("foo", n), Read());
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ASSERT_EQ("EOF", Read());
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}
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TEST(LogTest, RandomRead) {
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const int N = 500;
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Random write_rnd(301);
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for (int i = 0; i < N; i++) {
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Write(RandomSkewedString(i, &write_rnd));
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}
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Random read_rnd(301);
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for (int i = 0; i < N; i++) {
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ASSERT_EQ(RandomSkewedString(i, &read_rnd), Read());
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}
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ASSERT_EQ("EOF", Read());
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}
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// Tests of all the error paths in log_reader.cc follow:
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TEST(LogTest, ReadError) {
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Write("foo");
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ForceError();
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ASSERT_EQ("EOF", Read());
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ASSERT_EQ((unsigned int)kBlockSize, DroppedBytes());
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ASSERT_EQ("OK", MatchError("read error"));
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}
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TEST(LogTest, BadRecordType) {
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Write("foo");
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// Type is stored in header[6]
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IncrementByte(6, 100);
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FixChecksum(0, 3);
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ASSERT_EQ("EOF", Read());
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ASSERT_EQ(3U, DroppedBytes());
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ASSERT_EQ("OK", MatchError("unknown record type"));
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}
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TEST(LogTest, TruncatedTrailingRecordIsIgnored) {
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Write("foo");
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ShrinkSize(4); // Drop all payload as well as a header byte
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ASSERT_EQ("EOF", Read());
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// Truncated last record is ignored, not treated as an error
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ASSERT_EQ(0U, DroppedBytes());
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ASSERT_EQ("", ReportMessage());
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}
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TEST(LogTest, BadLength) {
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const int kPayloadSize = kBlockSize - kHeaderSize;
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Write(BigString("bar", kPayloadSize));
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Write("foo");
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// Least significant size byte is stored in header[4].
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IncrementByte(4, 1);
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ASSERT_EQ("foo", Read());
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ASSERT_EQ(kBlockSize, DroppedBytes());
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ASSERT_EQ("OK", MatchError("bad record length"));
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}
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TEST(LogTest, BadLengthAtEndIsIgnored) {
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Write("foo");
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ShrinkSize(1);
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ASSERT_EQ("EOF", Read());
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ASSERT_EQ(0U, DroppedBytes());
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ASSERT_EQ("", ReportMessage());
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}
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TEST(LogTest, ChecksumMismatch) {
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Write("foo");
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IncrementByte(0, 10);
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ASSERT_EQ("EOF", Read());
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ASSERT_EQ(10U, DroppedBytes());
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ASSERT_EQ("OK", MatchError("checksum mismatch"));
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}
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TEST(LogTest, UnexpectedMiddleType) {
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Write("foo");
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SetByte(6, kMiddleType);
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FixChecksum(0, 3);
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ASSERT_EQ("EOF", Read());
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ASSERT_EQ(3U, DroppedBytes());
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ASSERT_EQ("OK", MatchError("missing start"));
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}
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TEST(LogTest, UnexpectedLastType) {
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Write("foo");
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SetByte(6, kLastType);
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FixChecksum(0, 3);
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ASSERT_EQ("EOF", Read());
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ASSERT_EQ(3U, DroppedBytes());
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ASSERT_EQ("OK", MatchError("missing start"));
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}
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TEST(LogTest, UnexpectedFullType) {
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Write("foo");
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Write("bar");
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SetByte(6, kFirstType);
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FixChecksum(0, 3);
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ASSERT_EQ("bar", Read());
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ASSERT_EQ("EOF", Read());
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ASSERT_EQ(3U, DroppedBytes());
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ASSERT_EQ("OK", MatchError("partial record without end"));
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}
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TEST(LogTest, UnexpectedFirstType) {
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Write("foo");
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Write(BigString("bar", 100000));
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SetByte(6, kFirstType);
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|
FixChecksum(0, 3);
|
|
ASSERT_EQ(BigString("bar", 100000), Read());
|
|
ASSERT_EQ("EOF", Read());
|
|
ASSERT_EQ(3U, DroppedBytes());
|
|
ASSERT_EQ("OK", MatchError("partial record without end"));
|
|
}
|
|
|
|
TEST(LogTest, MissingLastIsIgnored) {
|
|
Write(BigString("bar", kBlockSize));
|
|
// Remove the LAST block, including header.
|
|
ShrinkSize(14);
|
|
ASSERT_EQ("EOF", Read());
|
|
ASSERT_EQ("", ReportMessage());
|
|
ASSERT_EQ(0U, DroppedBytes());
|
|
}
|
|
|
|
TEST(LogTest, PartialLastIsIgnored) {
|
|
Write(BigString("bar", kBlockSize));
|
|
// Cause a bad record length in the LAST block.
|
|
ShrinkSize(1);
|
|
ASSERT_EQ("EOF", Read());
|
|
ASSERT_EQ("", ReportMessage());
|
|
ASSERT_EQ(0U, DroppedBytes());
|
|
}
|
|
|
|
TEST(LogTest, ErrorJoinsRecords) {
|
|
// Consider two fragmented records:
|
|
// first(R1) last(R1) first(R2) last(R2)
|
|
// where the middle two fragments disappear. We do not want
|
|
// first(R1),last(R2) to get joined and returned as a valid record.
|
|
|
|
// Write records that span two blocks
|
|
Write(BigString("foo", kBlockSize));
|
|
Write(BigString("bar", kBlockSize));
|
|
Write("correct");
|
|
|
|
// Wipe the middle block
|
|
for (unsigned int offset = kBlockSize; offset < 2*kBlockSize; offset++) {
|
|
SetByte(offset, 'x');
|
|
}
|
|
|
|
ASSERT_EQ("correct", Read());
|
|
ASSERT_EQ("EOF", Read());
|
|
size_t dropped = DroppedBytes();
|
|
ASSERT_LE(dropped, 2 * kBlockSize + 100);
|
|
ASSERT_GE(dropped, 2 * kBlockSize);
|
|
}
|
|
|
|
TEST(LogTest, ReadStart) {
|
|
CheckInitialOffsetRecord(0, 0);
|
|
}
|
|
|
|
TEST(LogTest, ReadSecondOneOff) {
|
|
CheckInitialOffsetRecord(1, 1);
|
|
}
|
|
|
|
TEST(LogTest, ReadSecondTenThousand) {
|
|
CheckInitialOffsetRecord(10000, 1);
|
|
}
|
|
|
|
TEST(LogTest, ReadSecondStart) {
|
|
CheckInitialOffsetRecord(10007, 1);
|
|
}
|
|
|
|
TEST(LogTest, ReadThirdOneOff) {
|
|
CheckInitialOffsetRecord(10008, 2);
|
|
}
|
|
|
|
TEST(LogTest, ReadThirdStart) {
|
|
CheckInitialOffsetRecord(20014, 2);
|
|
}
|
|
|
|
TEST(LogTest, ReadFourthOneOff) {
|
|
CheckInitialOffsetRecord(20015, 3);
|
|
}
|
|
|
|
TEST(LogTest, ReadFourthFirstBlockTrailer) {
|
|
CheckInitialOffsetRecord(log::kBlockSize - 4, 3);
|
|
}
|
|
|
|
TEST(LogTest, ReadFourthMiddleBlock) {
|
|
CheckInitialOffsetRecord(log::kBlockSize + 1, 3);
|
|
}
|
|
|
|
TEST(LogTest, ReadFourthLastBlock) {
|
|
CheckInitialOffsetRecord(2 * log::kBlockSize + 1, 3);
|
|
}
|
|
|
|
TEST(LogTest, ReadFourthStart) {
|
|
CheckInitialOffsetRecord(
|
|
2 * (kHeaderSize + 1000) + (2 * log::kBlockSize - 1000) + 3 * kHeaderSize,
|
|
3);
|
|
}
|
|
|
|
TEST(LogTest, ReadEnd) {
|
|
CheckOffsetPastEndReturnsNoRecords(0);
|
|
}
|
|
|
|
TEST(LogTest, ReadPastEnd) {
|
|
CheckOffsetPastEndReturnsNoRecords(5);
|
|
}
|
|
|
|
TEST(LogTest, ClearEofSingleBlock) {
|
|
Write("foo");
|
|
Write("bar");
|
|
ForceEOF(3 + kHeaderSize + 2);
|
|
ASSERT_EQ("foo", Read());
|
|
UnmarkEOF();
|
|
ASSERT_EQ("bar", Read());
|
|
ASSERT_TRUE(IsEOF());
|
|
ASSERT_EQ("EOF", Read());
|
|
Write("xxx");
|
|
UnmarkEOF();
|
|
ASSERT_EQ("xxx", Read());
|
|
ASSERT_TRUE(IsEOF());
|
|
}
|
|
|
|
TEST(LogTest, ClearEofMultiBlock) {
|
|
size_t num_full_blocks = 5;
|
|
size_t n = (kBlockSize - kHeaderSize) * num_full_blocks + 25;
|
|
Write(BigString("foo", n));
|
|
Write(BigString("bar", n));
|
|
ForceEOF(n + num_full_blocks * kHeaderSize + 10);
|
|
ASSERT_EQ(BigString("foo", n), Read());
|
|
ASSERT_TRUE(IsEOF());
|
|
UnmarkEOF();
|
|
ASSERT_EQ(BigString("bar", n), Read());
|
|
ASSERT_TRUE(IsEOF());
|
|
Write(BigString("xxx", n));
|
|
UnmarkEOF();
|
|
ASSERT_EQ(BigString("xxx", n), Read());
|
|
ASSERT_TRUE(IsEOF());
|
|
}
|
|
|
|
TEST(LogTest, ClearEofError) {
|
|
// If an error occurs during Read() in UnmarkEOF(), the records contained
|
|
// in the buffer should be returned on subsequent calls of ReadRecord()
|
|
// until no more full records are left, whereafter ReadRecord() should return
|
|
// false to indicate that it cannot read any further.
|
|
|
|
Write("foo");
|
|
Write("bar");
|
|
UnmarkEOF();
|
|
ASSERT_EQ("foo", Read());
|
|
ASSERT_TRUE(IsEOF());
|
|
Write("xxx");
|
|
ForceError(0);
|
|
UnmarkEOF();
|
|
ASSERT_EQ("bar", Read());
|
|
ASSERT_EQ("EOF", Read());
|
|
}
|
|
|
|
TEST(LogTest, ClearEofError2) {
|
|
Write("foo");
|
|
Write("bar");
|
|
UnmarkEOF();
|
|
ASSERT_EQ("foo", Read());
|
|
Write("xxx");
|
|
ForceError(3);
|
|
UnmarkEOF();
|
|
ASSERT_EQ("bar", Read());
|
|
ASSERT_EQ("EOF", Read());
|
|
ASSERT_EQ(3U, DroppedBytes());
|
|
ASSERT_EQ("OK", MatchError("read error"));
|
|
}
|
|
|
|
} // namespace log
|
|
} // namespace rocksdb
|
|
|
|
int main(int argc, char** argv) {
|
|
return rocksdb::test::RunAllTests();
|
|
}
|