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llvm-project/clang-tools-extra/clangd/unittests/IndexActionTests.cpp

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//===------ IndexActionTests.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 "Headers.h"
#include "TestFS.h"
#include "index/IndexAction.h"
#include "clang/Tooling/Tooling.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace clang {
namespace clangd {
namespace {
using ::testing::AllOf;
using ::testing::ElementsAre;
using ::testing::Not;
using ::testing::Pair;
using ::testing::UnorderedElementsAre;
using ::testing::UnorderedPointwise;
std::string toUri(llvm::StringRef Path) { return URI::create(Path).toString(); }
MATCHER(IsTU, "") { return arg.Flags & IncludeGraphNode::SourceFlag::IsTU; }
MATCHER_P(HasDigest, Digest, "") { return arg.Digest == Digest; }
MATCHER_P(HasName, Name, "") { return arg.Name == Name; }
MATCHER(HasSameURI, "") {
llvm::StringRef URI = ::testing::get<0>(arg);
const std::string &Path = ::testing::get<1>(arg);
return toUri(Path) == URI;
}
::testing::Matcher<const IncludeGraphNode &>
IncludesAre(const std::vector<std::string> &Includes) {
return ::testing::Field(&IncludeGraphNode::DirectIncludes,
UnorderedPointwise(HasSameURI(), Includes));
}
void checkNodesAreInitialized(const IndexFileIn &IndexFile,
const std::vector<std::string> &Paths) {
ASSERT_TRUE(IndexFile.Sources);
EXPECT_THAT(Paths.size(), IndexFile.Sources->size());
for (llvm::StringRef Path : Paths) {
auto URI = toUri(Path);
const auto &Node = IndexFile.Sources->lookup(URI);
// Uninitialized nodes will have an empty URI.
EXPECT_EQ(Node.URI.data(), IndexFile.Sources->find(URI)->getKeyData());
}
}
std::map<std::string, const IncludeGraphNode &> toMap(const IncludeGraph &IG) {
std::map<std::string, const IncludeGraphNode &> Nodes;
for (auto &I : IG)
Nodes.emplace(I.getKey(), I.getValue());
return Nodes;
}
class IndexActionTest : public ::testing::Test {
public:
IndexActionTest() : InMemoryFileSystem(new llvm::vfs::InMemoryFileSystem) {}
IndexFileIn
runIndexingAction(llvm::StringRef MainFilePath,
const std::vector<std::string> &ExtraArgs = {}) {
IndexFileIn IndexFile;
llvm::IntrusiveRefCntPtr<FileManager> Files(
new FileManager(FileSystemOptions(), InMemoryFileSystem));
auto Action = createStaticIndexingAction(
SymbolCollector::Options(),
[&](SymbolSlab S) { IndexFile.Symbols = std::move(S); },
[&](RefSlab R) { IndexFile.Refs = std::move(R); },
[&](RelationSlab R) { IndexFile.Relations = std::move(R); },
[&](IncludeGraph IG) { IndexFile.Sources = std::move(IG); });
std::vector<std::string> Args = {"index_action", "-fsyntax-only",
"-xc++", "-std=c++11",
"-iquote", testRoot()};
Args.insert(Args.end(), ExtraArgs.begin(), ExtraArgs.end());
Args.push_back(MainFilePath);
tooling::ToolInvocation Invocation(
Args, Action.release(), Files.get(),
std::make_shared<PCHContainerOperations>());
Invocation.run();
checkNodesAreInitialized(IndexFile, FilePaths);
return IndexFile;
}
void addFile(llvm::StringRef Path, llvm::StringRef Content) {
InMemoryFileSystem->addFile(Path, 0,
llvm::MemoryBuffer::getMemBuffer(Content));
FilePaths.push_back(Path);
}
protected:
std::vector<std::string> FilePaths;
llvm::IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFileSystem;
};
TEST_F(IndexActionTest, CollectIncludeGraph) {
std::string MainFilePath = testPath("main.cpp");
std::string MainCode = "#include \"level1.h\"";
std::string Level1HeaderPath = testPath("level1.h");
std::string Level1HeaderCode = "#include \"level2.h\"";
std::string Level2HeaderPath = testPath("level2.h");
std::string Level2HeaderCode = "";
addFile(MainFilePath, MainCode);
addFile(Level1HeaderPath, Level1HeaderCode);
addFile(Level2HeaderPath, Level2HeaderCode);
IndexFileIn IndexFile = runIndexingAction(MainFilePath);
auto Nodes = toMap(*IndexFile.Sources);
EXPECT_THAT(Nodes,
UnorderedElementsAre(
Pair(toUri(MainFilePath),
AllOf(IsTU(), IncludesAre({Level1HeaderPath}),
HasDigest(digest(MainCode)))),
Pair(toUri(Level1HeaderPath),
AllOf(Not(IsTU()), IncludesAre({Level2HeaderPath}),
HasDigest(digest(Level1HeaderCode)))),
Pair(toUri(Level2HeaderPath),
AllOf(Not(IsTU()), IncludesAre({}),
HasDigest(digest(Level2HeaderCode))))));
}
TEST_F(IndexActionTest, IncludeGraphSelfInclude) {
std::string MainFilePath = testPath("main.cpp");
std::string MainCode = "#include \"header.h\"";
std::string HeaderPath = testPath("header.h");
std::string HeaderCode = R"cpp(
#ifndef _GUARD_
#define _GUARD_
#include "header.h"
#endif)cpp";
addFile(MainFilePath, MainCode);
addFile(HeaderPath, HeaderCode);
IndexFileIn IndexFile = runIndexingAction(MainFilePath);
auto Nodes = toMap(*IndexFile.Sources);
EXPECT_THAT(
Nodes,
UnorderedElementsAre(
Pair(toUri(MainFilePath), AllOf(IsTU(), IncludesAre({HeaderPath}),
HasDigest(digest(MainCode)))),
Pair(toUri(HeaderPath), AllOf(Not(IsTU()), IncludesAre({HeaderPath}),
HasDigest(digest(HeaderCode))))));
}
TEST_F(IndexActionTest, IncludeGraphSkippedFile) {
std::string MainFilePath = testPath("main.cpp");
std::string MainCode = R"cpp(
#include "common.h"
#include "header.h"
)cpp";
std::string CommonHeaderPath = testPath("common.h");
std::string CommonHeaderCode = R"cpp(
#ifndef _GUARD_
#define _GUARD_
void f();
#endif)cpp";
std::string HeaderPath = testPath("header.h");
std::string HeaderCode = R"cpp(
#include "common.h"
void g();)cpp";
addFile(MainFilePath, MainCode);
addFile(HeaderPath, HeaderCode);
addFile(CommonHeaderPath, CommonHeaderCode);
IndexFileIn IndexFile = runIndexingAction(MainFilePath);
auto Nodes = toMap(*IndexFile.Sources);
EXPECT_THAT(
Nodes, UnorderedElementsAre(
Pair(toUri(MainFilePath),
AllOf(IsTU(), IncludesAre({HeaderPath, CommonHeaderPath}),
HasDigest(digest(MainCode)))),
Pair(toUri(HeaderPath),
AllOf(Not(IsTU()), IncludesAre({CommonHeaderPath}),
HasDigest(digest(HeaderCode)))),
Pair(toUri(CommonHeaderPath),
AllOf(Not(IsTU()), IncludesAre({}),
HasDigest(digest(CommonHeaderCode))))));
}
TEST_F(IndexActionTest, IncludeGraphDynamicInclude) {
std::string MainFilePath = testPath("main.cpp");
std::string MainCode = R"cpp(
#ifndef FOO
#define FOO "main.cpp"
#else
#define FOO "header.h"
#endif
#include FOO)cpp";
std::string HeaderPath = testPath("header.h");
std::string HeaderCode = "";
addFile(MainFilePath, MainCode);
addFile(HeaderPath, HeaderCode);
IndexFileIn IndexFile = runIndexingAction(MainFilePath);
auto Nodes = toMap(*IndexFile.Sources);
EXPECT_THAT(
Nodes,
UnorderedElementsAre(
Pair(toUri(MainFilePath),
AllOf(IsTU(), IncludesAre({MainFilePath, HeaderPath}),
HasDigest(digest(MainCode)))),
Pair(toUri(HeaderPath), AllOf(Not(IsTU()), IncludesAre({}),
HasDigest(digest(HeaderCode))))));
}
TEST_F(IndexActionTest, NoWarnings) {
std::string MainFilePath = testPath("main.cpp");
std::string MainCode = R"cpp(
void foo(int x) {
if (x = 1) // -Wparentheses
return;
if (x = 1) // -Wparentheses
return;
}
void bar() {}
)cpp";
addFile(MainFilePath, MainCode);
// We set -ferror-limit so the warning-promoted-to-error would be fatal.
// This would cause indexing to stop (if warnings weren't disabled).
IndexFileIn IndexFile = runIndexingAction(
MainFilePath, {"-ferror-limit=1", "-Wparentheses", "-Werror"});
ASSERT_TRUE(IndexFile.Sources);
ASSERT_NE(0u, IndexFile.Sources->size());
EXPECT_THAT(*IndexFile.Symbols, ElementsAre(HasName("foo"), HasName("bar")));
}
} // namespace
} // namespace clangd
} // namespace clang
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