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//===- unittests/Frontend/OutputStreamTest.cpp --- FrontendAction tests --===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "clang/Basic/LangStandard.h"
#include "clang/CodeGen/BackendUtil.h"
#include "clang/CodeGen/CodeGenAction.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/FrontendTool/Utils.h"
#include "clang/Lex/PreprocessorOptions.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace clang;
using namespace clang::frontend;
namespace {
TEST(FrontendOutputTests, TestOutputStream) {
auto Invocation = std::make_shared<CompilerInvocation>();
Invocation->getPreprocessorOpts().addRemappedFile(
"test.cc", MemoryBuffer::getMemBuffer("").release());
Invocation->getFrontendOpts().Inputs.push_back(
FrontendInputFile("test.cc", Language::CXX));
Invocation->getFrontendOpts().ProgramAction = EmitBC;
Invocation->getTargetOpts().Triple = "i386-unknown-linux-gnu";
CompilerInstance Compiler;
SmallVector<char, 256> IRBuffer;
std::unique_ptr<raw_pwrite_stream> IRStream(
new raw_svector_ostream(IRBuffer));
Compiler.setOutputStream(std::move(IRStream));
Compiler.setInvocation(std::move(Invocation));
Compiler.createDiagnostics();
bool Success = ExecuteCompilerInvocation(&Compiler);
EXPECT_TRUE(Success);
EXPECT_TRUE(!IRBuffer.empty());
EXPECT_TRUE(StringRef(IRBuffer.data()).startswith("BC"));
}
TEST(FrontendOutputTests, TestVerboseOutputStreamShared) {
auto Invocation = std::make_shared<CompilerInvocation>();
Invocation->getPreprocessorOpts().addRemappedFile(
"test.cc", MemoryBuffer::getMemBuffer("invalid").release());
Invocation->getFrontendOpts().Inputs.push_back(
FrontendInputFile("test.cc", Language::CXX));
Invocation->getFrontendOpts().ProgramAction = EmitBC;
Invocation->getTargetOpts().Triple = "i386-unknown-linux-gnu";
CompilerInstance Compiler;
std::string VerboseBuffer;
raw_string_ostream VerboseStream(VerboseBuffer);
Compiler.setOutputStream(std::make_unique<raw_null_ostream>());
Compiler.setInvocation(std::move(Invocation));
IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
Compiler.createDiagnostics(
new TextDiagnosticPrinter(llvm::nulls(), &*DiagOpts), true);
Compiler.setVerboseOutputStream(VerboseStream);
bool Success = ExecuteCompilerInvocation(&Compiler);
EXPECT_FALSE(Success);
EXPECT_TRUE(!VerboseStream.str().empty());
EXPECT_TRUE(StringRef(VerboseBuffer.data()).contains("errors generated"));
}
TEST(FrontendOutputTests, TestVerboseOutputStreamOwned) {
std::string VerboseBuffer;
bool Success;
{
auto Invocation = std::make_shared<CompilerInvocation>();
Invocation->getPreprocessorOpts().addRemappedFile(
"test.cc", MemoryBuffer::getMemBuffer("invalid").release());
Invocation->getFrontendOpts().Inputs.push_back(
FrontendInputFile("test.cc", Language::CXX));
Invocation->getFrontendOpts().ProgramAction = EmitBC;
Invocation->getTargetOpts().Triple = "i386-unknown-linux-gnu";
CompilerInstance Compiler;
std::unique_ptr<raw_ostream> VerboseStream =
std::make_unique<raw_string_ostream>(VerboseBuffer);
Compiler.setOutputStream(std::make_unique<raw_null_ostream>());
Compiler.setInvocation(std::move(Invocation));
IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
Compiler.createDiagnostics(
new TextDiagnosticPrinter(llvm::nulls(), &*DiagOpts), true);
Compiler.setVerboseOutputStream(std::move(VerboseStream));
Success = ExecuteCompilerInvocation(&Compiler);
}
EXPECT_FALSE(Success);
EXPECT_TRUE(!VerboseBuffer.empty());
EXPECT_TRUE(StringRef(VerboseBuffer.data()).contains("errors generated"));
}
}
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