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//===-- TestFS.h ------------------------------------------------*- C++ -*-===//
// The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
// Allows setting up fake filesystem environments for tests.
#include "ClangdServer.h"
#include "clang/Basic/VirtualFileSystem.h"
#include "llvm/ADT/IntrusiveRefCntPtr.h"
#include "llvm/Support/Path.h"
namespace clang {
namespace clangd {
// Builds a VFS that provides access to the provided files, plus temporary
// directories.
buildTestFS(llvm::StringMap<std::string> const &Files,
llvm::StringMap<time_t> const &Timestamps = {});
// A VFS provider that returns TestFSes containing a provided set of files.
class MockFSProvider : public FileSystemProvider {
IntrusiveRefCntPtr<vfs::FileSystem> getFileSystem() override {
return buildTestFS(Files);
// If relative paths are used, they are resolved with testPath().
llvm::StringMap<std::string> Files;
// A Compilation database that returns a fixed set of compile flags.
class MockCompilationDatabase : public GlobalCompilationDatabase {
/// When \p UseRelPaths is true, uses relative paths in compile commands.
/// When \p UseRelPaths is false, uses absoulte paths.
MockCompilationDatabase(bool UseRelPaths = false);
getCompileCommand(PathRef File) const override;
std::vector<std::string> ExtraClangFlags;
const bool UseRelPaths;
// Returns an absolute (fake) test directory for this OS.
const char *testRoot();
// Returns a suitable absolute path for this OS.
std::string testPath(PathRef File);
// unittest: is a scheme that refers to files relative to testRoot()
// This anchor is used to force the linker to link in the generated object file
// and thus register unittest: URI scheme plugin.
extern volatile int UnittestSchemeAnchorSource;
} // namespace clangd
} // namespace clang