forked from OSchip/llvm-project
303 lines
12 KiB
C++
303 lines
12 KiB
C++
//===-- CppModuleConfigurationTest.cpp ------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "Plugins/ExpressionParser/Clang/CppModuleConfiguration.h"
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#include "Plugins/ExpressionParser/Clang/ClangHost.h"
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#include "TestingSupport/SubsystemRAII.h"
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#include "lldb/Host/FileSystem.h"
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#include "lldb/Host/HostInfo.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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using namespace lldb_private;
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namespace {
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struct CppModuleConfigurationTest : public testing::Test {
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llvm::MemoryBufferRef m_empty_buffer;
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llvm::IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> m_fs;
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CppModuleConfigurationTest()
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: m_empty_buffer("", "<empty buffer>"),
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m_fs(new llvm::vfs::InMemoryFileSystem()) {}
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void SetUp() override {
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FileSystem::Initialize(m_fs);
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HostInfo::Initialize();
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}
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void TearDown() override {
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HostInfo::Terminate();
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FileSystem::Terminate();
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}
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/// Utility function turning a list of paths into a FileSpecList.
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FileSpecList makeFiles(llvm::ArrayRef<std::string> paths) {
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FileSpecList result;
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for (const std::string &path : paths) {
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result.Append(FileSpec(path, FileSpec::Style::posix));
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if (!m_fs->addFileNoOwn(path, static_cast<time_t>(0), m_empty_buffer))
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llvm_unreachable("Invalid test configuration?");
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}
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return result;
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}
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};
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} // namespace
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/// Returns the Clang resource include directory.
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static std::string ResourceInc() {
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llvm::SmallString<256> resource_dir;
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llvm::sys::path::append(resource_dir, GetClangResourceDir().GetPath(),
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"include");
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return std::string(resource_dir);
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}
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TEST_F(CppModuleConfigurationTest, Linux) {
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// Test the average Linux configuration.
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std::string usr = "/usr/include";
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std::string libcpp = "/usr/include/c++/v1";
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std::vector<std::string> files = {// C library
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usr + "/stdio.h",
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// C++ library
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libcpp + "/vector",
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libcpp + "/module.modulemap"};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre("std"));
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EXPECT_THAT(config.GetIncludeDirs(),
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testing::ElementsAre(libcpp, ResourceInc(), usr));
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}
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TEST_F(CppModuleConfigurationTest, LinuxTargetSpecificInclude) {
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// Test the average Linux configuration.
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std::string usr = "/usr/include";
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std::string usr_target = "/usr/include/x86_64-linux-gnu";
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std::string libcpp = "/usr/include/c++/v1";
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std::string libcpp_target = "/usr/include/x86_64-unknown-linux-gnu/c++/v1";
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std::vector<std::string> files = {
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// C library
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usr + "/stdio.h", usr_target + "/sys/cdefs.h",
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// C++ library
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libcpp + "/vector", libcpp + "/module.modulemap"};
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CppModuleConfiguration config(makeFiles(files),
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llvm::Triple("x86_64-unknown-linux-gnu"));
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre("std"));
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EXPECT_THAT(config.GetIncludeDirs(),
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testing::ElementsAre(libcpp, ResourceInc(), usr, usr_target,
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libcpp_target));
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}
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TEST_F(CppModuleConfigurationTest, Sysroot) {
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// Test that having a sysroot for the whole system works fine.
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std::string libcpp = "/home/user/sysroot/usr/include/c++/v1";
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std::string usr = "/home/user/sysroot/usr/include";
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std::vector<std::string> files = {// C library
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usr + "/stdio.h",
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// C++ library
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libcpp + "/vector",
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libcpp + "/module.modulemap"};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre("std"));
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EXPECT_THAT(config.GetIncludeDirs(),
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testing::ElementsAre(libcpp, ResourceInc(), usr));
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}
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TEST_F(CppModuleConfigurationTest, LinuxLocalLibCpp) {
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// Test that a locally build libc++ is detected.
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std::string usr = "/usr/include";
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std::string libcpp = "/home/user/llvm-build/include/c++/v1";
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std::vector<std::string> files = {// C library
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usr + "/stdio.h",
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// C++ library
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libcpp + "/vector",
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libcpp + "/module.modulemap"};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre("std"));
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EXPECT_THAT(config.GetIncludeDirs(),
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testing::ElementsAre(libcpp, ResourceInc(), usr));
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}
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TEST_F(CppModuleConfigurationTest, UnrelatedLibrary) {
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// Test that having an unrelated library in /usr/include doesn't break.
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std::string usr = "/usr/include";
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std::string libcpp = "/home/user/llvm-build/include/c++/v1";
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std::vector<std::string> files = {// C library
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usr + "/stdio.h",
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// unrelated library
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usr + "/boost/vector",
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// C++ library
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libcpp + "/vector",
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libcpp + "/module.modulemap"};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre("std"));
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EXPECT_THAT(config.GetIncludeDirs(),
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testing::ElementsAre(libcpp, ResourceInc(), usr));
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}
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TEST_F(CppModuleConfigurationTest, UnrelatedLibraryWithTargetSpecificInclude) {
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// Test that having an unrelated library in /usr/include doesn't break.
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std::string usr = "/usr/include";
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std::string libcpp = "/home/user/llvm-build/include/c++/v1";
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std::string libcpp_target =
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"/home/user/llvm-build/include/x86_64-unknown-linux-gnu/c++/v1";
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std::vector<std::string> files = {// C library
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usr + "/stdio.h",
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// unrelated library
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usr + "/boost/vector",
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// C++ library
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libcpp + "/vector",
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libcpp + "/module.modulemap"};
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CppModuleConfiguration config(makeFiles(files),
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llvm::Triple("x86_64-unknown-linux-gnu"));
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre("std"));
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EXPECT_THAT(config.GetIncludeDirs(),
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testing::ElementsAre(libcpp, ResourceInc(), usr, libcpp_target));
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}
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TEST_F(CppModuleConfigurationTest, Xcode) {
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// Test detection of libc++ coming from Xcode with generic platform names.
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std::string p = "/Applications/Xcode.app/Contents/Developer/";
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std::string libcpp = p + "Toolchains/B.xctoolchain/usr/include/c++/v1";
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std::string usr =
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p + "Platforms/A.platform/Developer/SDKs/OSVers.sdk/usr/include";
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std::vector<std::string> files = {
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// C library
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usr + "/stdio.h",
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// C++ library
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libcpp + "/vector",
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libcpp + "/module.modulemap",
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};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre("std"));
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EXPECT_THAT(config.GetIncludeDirs(),
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testing::ElementsAre(libcpp, ResourceInc(), usr));
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}
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TEST_F(CppModuleConfigurationTest, LibCppV2) {
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// Test that a "v2" of libc++ is still correctly detected.
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std::string libcpp = "/usr/include/c++/v2";
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std::vector<std::string> files = {// C library
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"/usr/include/stdio.h",
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// C++ library
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libcpp + "/vector",
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libcpp + "/module.modulemap"};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre("std"));
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EXPECT_THAT(config.GetIncludeDirs(),
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testing::ElementsAre("/usr/include/c++/v2", ResourceInc(),
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"/usr/include"));
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}
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TEST_F(CppModuleConfigurationTest, UnknownLibCppFile) {
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// Test that having some unknown file in the libc++ path doesn't break
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// anything.
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std::string libcpp = "/usr/include/c++/v1";
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std::vector<std::string> files = {// C library
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"/usr/include/stdio.h",
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// C++ library
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libcpp + "/non_existing_file",
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libcpp + "/module.modulemap",
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libcpp + "/vector"};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre("std"));
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EXPECT_THAT(config.GetIncludeDirs(),
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testing::ElementsAre("/usr/include/c++/v1", ResourceInc(),
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"/usr/include"));
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}
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TEST_F(CppModuleConfigurationTest, MissingUsrInclude) {
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// Test that we don't load 'std' if we can't find the C standard library.
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std::string libcpp = "/usr/include/c++/v1";
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std::vector<std::string> files = {// C++ library
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libcpp + "/vector",
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libcpp + "/module.modulemap"};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre());
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EXPECT_THAT(config.GetIncludeDirs(), testing::ElementsAre());
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}
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TEST_F(CppModuleConfigurationTest, MissingLibCpp) {
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// Test that we don't load 'std' if we don't have a libc++.
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std::string usr = "/usr/include";
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std::vector<std::string> files = {
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// C library
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usr + "/stdio.h",
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};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre());
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EXPECT_THAT(config.GetIncludeDirs(), testing::ElementsAre());
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}
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TEST_F(CppModuleConfigurationTest, IgnoreLibStdCpp) {
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// Test that we don't do anything bad when we encounter libstdc++ paths.
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std::string usr = "/usr/include";
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std::vector<std::string> files = {
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// C library
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usr + "/stdio.h",
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// C++ library
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usr + "/c++/8.0.1/vector",
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};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre());
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EXPECT_THAT(config.GetIncludeDirs(), testing::ElementsAre());
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}
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TEST_F(CppModuleConfigurationTest, AmbiguousCLib) {
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// Test that we don't do anything when we are not sure where the
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// right C standard library is.
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std::string usr1 = "/usr/include";
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std::string usr2 = "/usr/include/other/path";
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std::string libcpp = usr1 + "c++/v1";
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std::vector<std::string> files = {
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// First C library
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usr1 + "/stdio.h",
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// Second C library
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usr2 + "/stdio.h",
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// C++ library
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libcpp + "/vector",
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libcpp + "/module.modulemap",
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};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre());
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EXPECT_THAT(config.GetIncludeDirs(), testing::ElementsAre());
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}
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TEST_F(CppModuleConfigurationTest, AmbiguousLibCpp) {
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// Test that we don't do anything when we are not sure where the
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// right libc++ is.
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std::string usr = "/usr/include";
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std::string libcpp1 = usr + "c++/v1";
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std::string libcpp2 = usr + "c++/v2";
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std::vector<std::string> files = {
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// C library
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usr + "/stdio.h",
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// First C++ library
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libcpp1 + "/vector",
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libcpp1 + "/module.modulemap",
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// Second C++ library
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libcpp2 + "/vector",
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libcpp2 + "/module.modulemap",
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};
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CppModuleConfiguration config(makeFiles(files), llvm::Triple());
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EXPECT_THAT(config.GetImportedModules(), testing::ElementsAre());
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EXPECT_THAT(config.GetIncludeDirs(), testing::ElementsAre());
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}
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