llvm/llvm/unittests/XRay/FDRTraceWriterTest.cpp

//===- llvm/unittest/XRay/FDRTraceWriterTest.cpp ----------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Test a utility that can write out XRay FDR Mode formatted trace files.
//
//===----------------------------------------------------------------------===//
#include "llvm/XRay/FDRTraceWriter.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/XRay/FDRLogBuilder.h"
#include "llvm/XRay/FDRRecords.h"
#include "llvm/XRay/Trace.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <string>

namespace llvm {
namespace xray {
namespace {

ElementsAre;
Eq;
Field;
IsEmpty;
Not;

// We want to be able to create an instance of an FDRTraceWriter and associate
// it with a stream, which could be loaded and turned into a Trace instance.
// This test writes out version 3 trace logs.
TEST(FDRTraceWriterTest, WriteToStringBufferVersion3) { … }

// This version is almost exactly the same as above, except writing version 2
// logs, without the PID records.
TEST(FDRTraceWriterTest, WriteToStringBufferVersion2) { … }

// This covers version 1 of the log, without a BufferExtents record but has an
// explicit EndOfBuffer record.
TEST(FDRTraceWriterTest, WriteToStringBufferVersion1) { … }

} // namespace
} // namespace xray
} // namespace llvm