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//===-- GlobalCompilationDatabaseTests.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
//
//===----------------------------------------------------------------------===//
#include "GlobalCompilationDatabase.h"
#include "TestFS.h"
#include "llvm/ADT/StringExtras.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace clang {
namespace clangd {
namespace {
using ::testing::AllOf;
using ::testing::Contains;
using ::testing::ElementsAre;
using ::testing::EndsWith;
using ::testing::Not;
using ::testing::StartsWith;
TEST(GlobalCompilationDatabaseTest, FallbackCommand) {
DirectoryBasedGlobalCompilationDatabase DB(None);
auto Cmd = DB.getFallbackCommand(testPath("foo/bar.cc"));
EXPECT_EQ(Cmd.Directory, testPath("foo"));
EXPECT_THAT(Cmd.CommandLine,
ElementsAre(EndsWith("clang"), testPath("foo/bar.cc")));
EXPECT_EQ(Cmd.Output, "");
// .h files have unknown language, so they are parsed liberally as obj-c++.
Cmd = DB.getFallbackCommand(testPath("foo/bar.h"));
EXPECT_THAT(Cmd.CommandLine,
ElementsAre(EndsWith("clang"), "-xobjective-c++-header",
testPath("foo/bar.h")));
Cmd = DB.getFallbackCommand(testPath("foo/bar"));
EXPECT_THAT(Cmd.CommandLine,
ElementsAre(EndsWith("clang"), "-xobjective-c++-header",
testPath("foo/bar")));
}
static tooling::CompileCommand cmd(llvm::StringRef File, llvm::StringRef Arg) {
return tooling::CompileCommand(testRoot(), File, {"clang", Arg, File}, "");
}
class OverlayCDBTest : public ::testing::Test {
class BaseCDB : public GlobalCompilationDatabase {
public:
llvm::Optional<tooling::CompileCommand>
getCompileCommand(llvm::StringRef File,
ProjectInfo *Project) const override {
if (File == testPath("foo.cc")) {
if (Project)
Project->SourceRoot = testRoot();
return cmd(File, "-DA=1");
}
return None;
}
tooling::CompileCommand
getFallbackCommand(llvm::StringRef File) const override {
return cmd(File, "-DA=2");
}
};
protected:
OverlayCDBTest() : Base(llvm::make_unique<BaseCDB>()) {}
std::unique_ptr<GlobalCompilationDatabase> Base;
};
TEST_F(OverlayCDBTest, GetCompileCommand) {
OverlayCDB CDB(Base.get(), {}, std::string(""));
EXPECT_THAT(CDB.getCompileCommand(testPath("foo.cc"))->CommandLine,
AllOf(Contains(testPath("foo.cc")), Contains("-DA=1")));
EXPECT_EQ(CDB.getCompileCommand(testPath("missing.cc")), llvm::None);
auto Override = cmd(testPath("foo.cc"), "-DA=3");
CDB.setCompileCommand(testPath("foo.cc"), Override);
EXPECT_THAT(CDB.getCompileCommand(testPath("foo.cc"))->CommandLine,
Contains("-DA=3"));
EXPECT_EQ(CDB.getCompileCommand(testPath("missing.cc")), llvm::None);
CDB.setCompileCommand(testPath("missing.cc"), Override);
EXPECT_THAT(CDB.getCompileCommand(testPath("missing.cc"))->CommandLine,
Contains("-DA=3"));
}
TEST_F(OverlayCDBTest, GetFallbackCommand) {
OverlayCDB CDB(Base.get(), {"-DA=4"});
EXPECT_THAT(CDB.getFallbackCommand(testPath("bar.cc")).CommandLine,
ElementsAre("clang", "-DA=2", testPath("bar.cc"), "-DA=4",
"-fsyntax-only", StartsWith("-resource-dir")));
}
TEST_F(OverlayCDBTest, NoBase) {
OverlayCDB CDB(nullptr, {"-DA=6"}, std::string(""));
EXPECT_EQ(CDB.getCompileCommand(testPath("bar.cc")), None);
auto Override = cmd(testPath("bar.cc"), "-DA=5");
CDB.setCompileCommand(testPath("bar.cc"), Override);
EXPECT_THAT(CDB.getCompileCommand(testPath("bar.cc"))->CommandLine,
Contains("-DA=5"));
EXPECT_THAT(CDB.getFallbackCommand(testPath("foo.cc")).CommandLine,
ElementsAre(EndsWith("clang"), testPath("foo.cc"), "-DA=6",
"-fsyntax-only"));
}
TEST_F(OverlayCDBTest, Watch) {
OverlayCDB Inner(nullptr);
OverlayCDB Outer(&Inner);
std::vector<std::vector<std::string>> Changes;
auto Sub = Outer.watch([&](const std::vector<std::string> &ChangedFiles) {
Changes.push_back(ChangedFiles);
});
Inner.setCompileCommand("A.cpp", tooling::CompileCommand());
Outer.setCompileCommand("B.cpp", tooling::CompileCommand());
Inner.setCompileCommand("A.cpp", llvm::None);
Outer.setCompileCommand("C.cpp", llvm::None);
EXPECT_THAT(Changes, ElementsAre(ElementsAre("A.cpp"), ElementsAre("B.cpp"),
ElementsAre("A.cpp"), ElementsAre("C.cpp")));
}
TEST_F(OverlayCDBTest, Adjustments) {
OverlayCDB CDB(Base.get(), {}, std::string(""));
auto Cmd = CDB.getCompileCommand(testPath("foo.cc")).getValue();
// Delete the file name.
Cmd.CommandLine.pop_back();
// Check dependency file commands are dropped.
Cmd.CommandLine.push_back("-MF");
Cmd.CommandLine.push_back("random-dependency");
// Check plugin-related commands are dropped.
Cmd.CommandLine.push_back("-Xclang");
Cmd.CommandLine.push_back("-load");
Cmd.CommandLine.push_back("-Xclang");
Cmd.CommandLine.push_back("random-plugin");
Cmd.CommandLine.push_back("-DA=5");
Cmd.CommandLine.push_back(Cmd.Filename);
CDB.setCompileCommand(testPath("foo.cc"), Cmd);
EXPECT_THAT(CDB.getCompileCommand(testPath("foo.cc"))->CommandLine,
AllOf(Contains("-fsyntax-only"), Contains("-DA=5"),
Contains(testPath("foo.cc")), Not(Contains("-MF")),
Not(Contains("random-dependency")),
Not(Contains("-Xclang")), Not(Contains("-load")),
Not(Contains("random-plugin"))));
}
} // namespace
} // namespace clangd
} // namespace clang
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