clang/unittests/Serialization/ForceCheckFileInputTest.cpp

   1 //===- unittests/Serialization/ForceCheckFileInputTest.cpp - CI tests -----===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "clang/ASTMatchers/ASTMatchFinder.h"
  10 #include "clang/ASTMatchers/ASTMatchers.h"
  11 #include "clang/Basic/FileManager.h"
  12 #include "clang/Frontend/CompilerInstance.h"
  13 #include "clang/Frontend/CompilerInvocation.h"
  14 #include "clang/Frontend/FrontendActions.h"
  15 #include "clang/Frontend/Utils.h"
  16 #include "clang/Lex/HeaderSearch.h"
  17 #include "clang/Lex/PreprocessorOptions.h"
  18 #include "clang/Serialization/ASTReader.h"
  19 #include "clang/Tooling/Tooling.h"
  20 #include "llvm/ADT/SmallString.h"
  21 #include "llvm/Support/FileSystem.h"
  22 #include "llvm/Support/raw_ostream.h"
  23
  24 #include "gtest/gtest.h"
  25
  26 using namespace llvm;
  27 using namespace clang;
  28
  29 namespace {
  30
  31 class ForceCheckFileInputTest : public ::testing::Test {
  32   void SetUp() override {
  33     EXPECT_FALSE(sys::fs::createUniqueDirectory("modules-test", TestDir));
  34   }
  35
  36   void TearDown() override { sys::fs::remove_directories(TestDir); }
  37
  38 public:
  39   SmallString<256> TestDir;
  40
  41   void addFile(StringRef Path, StringRef Contents) {
  42     EXPECT_FALSE(sys::path::is_absolute(Path));
  43
  44     SmallString<256> AbsPath(TestDir);
  45     sys::path::append(AbsPath, Path);
  46
  47     EXPECT_FALSE(
  48         sys::fs::create_directories(llvm::sys::path::parent_path(AbsPath)));
  49
  50     std::error_code EC;
  51     llvm::raw_fd_ostream OS(AbsPath, EC);
  52     EXPECT_FALSE(EC);
  53     OS << Contents;
  54   }
  55 };
  56
  57 TEST_F(ForceCheckFileInputTest, ForceCheck) {
  58   addFile("a.cppm", R"cpp(
  59 export module a;
  60 export int aa = 43;
  61   )cpp");
  62
  63   std::string BMIPath = llvm::Twine(TestDir + "/a.pcm").str();
  64
  65   {
  66     IntrusiveRefCntPtr<DiagnosticsEngine> Diags =
  67         CompilerInstance::createDiagnostics(new DiagnosticOptions());
  68     CreateInvocationOptions CIOpts;
  69     CIOpts.Diags = Diags;
  70     CIOpts.VFS = llvm::vfs::createPhysicalFileSystem();
  71
  72     const char *Args[] = {"clang++",       "-std=c++20",
  73                           "--precompile",  "-working-directory",
  74                           TestDir.c_str(), "a.cppm"};
  75     std::shared_ptr<CompilerInvocation> Invocation =
  76         createInvocation(Args, CIOpts);
  77     EXPECT_TRUE(Invocation);
  78     Invocation->getFrontendOpts().DisableFree = false;
  79
  80     auto Buf = CIOpts.VFS->getBufferForFile("a.cppm");
  81     EXPECT_TRUE(Buf);
  82
  83     Invocation->getPreprocessorOpts().addRemappedFile("a.cppm", Buf->get());
  84
  85     Buf->release();
  86
  87     CompilerInstance Instance;
  88     Instance.setDiagnostics(Diags.get());
  89     Instance.setInvocation(Invocation);
  90
  91     Instance.getFrontendOpts().OutputFile = BMIPath;
  92
  93     if (auto VFSWithRemapping = createVFSFromCompilerInvocation(
  94             Instance.getInvocation(), Instance.getDiagnostics(), CIOpts.VFS))
  95       CIOpts.VFS = VFSWithRemapping;
  96     Instance.createFileManager(CIOpts.VFS);
  97
  98     Instance.getHeaderSearchOpts().ValidateASTInputFilesContent = true;
  99
 100     GenerateReducedModuleInterfaceAction Action;
 101     EXPECT_TRUE(Instance.ExecuteAction(Action));
 102     EXPECT_FALSE(Diags->hasErrorOccurred());
 103   }
 104
 105   {
 106     IntrusiveRefCntPtr<DiagnosticsEngine> Diags =
 107         CompilerInstance::createDiagnostics(new DiagnosticOptions());
 108     CreateInvocationOptions CIOpts;
 109     CIOpts.Diags = Diags;
 110     CIOpts.VFS = llvm::vfs::createPhysicalFileSystem();
 111
 112     std::string BMIPath = llvm::Twine(TestDir + "/a.pcm").str();
 113     const char *Args[] = {
 114         "clang++",       "-std=c++20", "--precompile", "-working-directory",
 115         TestDir.c_str(), "a.cppm",     "-o",           BMIPath.c_str()};
 116     std::shared_ptr<CompilerInvocation> Invocation =
 117         createInvocation(Args, CIOpts);
 118     EXPECT_TRUE(Invocation);
 119     Invocation->getFrontendOpts().DisableFree = false;
 120
 121     CompilerInstance Clang;
 122
 123     Clang.setInvocation(Invocation);
 124     Clang.setDiagnostics(Diags.get());
 125     FileManager *FM = Clang.createFileManager(CIOpts.VFS);
 126     Clang.createSourceManager(*FM);
 127
 128     EXPECT_TRUE(Clang.createTarget());
 129     Clang.createPreprocessor(TU_Complete);
 130     Clang.getHeaderSearchOpts().ForceCheckCXX20ModulesInputFiles = true;
 131     Clang.getHeaderSearchOpts().ValidateASTInputFilesContent = true;
 132     Clang.createASTReader();
 133
 134     addFile("a.cppm", R"cpp(
 135 export module a;
 136 export int aa = 44;
 137   )cpp");
 138
 139     auto ReadResult =
 140         Clang.getASTReader()->ReadAST(BMIPath, serialization::MK_MainFile,
 141                                       SourceLocation(), ASTReader::ARR_None);
 142
 143     // We shall be able to detect the content change here.
 144     EXPECT_NE(ReadResult, ASTReader::Success);
 145   }
 146 }
 147
 148 } // anonymous namespace