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ConfigCompileTests.cpp
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ConfigCompileTests.cpp
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//===-- ConfigCompileTests.cpp --------------------------------------------===//
//
// 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 "Config.h"
#include "ConfigFragment.h"
#include "ConfigTesting.h"
#include "Features.inc"
#include "TestFS.h"
#include "clang/Basic/DiagnosticSema.h"
#include "llvm/ADT/None.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/SourceMgr.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <string>
namespace clang {
namespace clangd {
namespace config {
namespace {
using ::testing::AllOf;
using ::testing::Contains;
using ::testing::ElementsAre;
using ::testing::IsEmpty;
using ::testing::SizeIs;
using ::testing::StartsWith;
using ::testing::UnorderedElementsAre;
class ConfigCompileTests : public ::testing::Test {
protected:
CapturedDiags Diags;
Config Conf;
Fragment Frag;
Params Parm;
bool compileAndApply() {
Conf = Config();
Diags.Diagnostics.clear();
auto Compiled = std::move(Frag).compile(Diags.callback());
return Compiled(Parm, Conf);
}
};
TEST_F(ConfigCompileTests, Condition) {
// No condition.
Frag = {};
Frag.CompileFlags.Add.emplace_back("X");
EXPECT_TRUE(compileAndApply()) << "Empty config";
EXPECT_THAT(Diags.Diagnostics, IsEmpty());
EXPECT_THAT(Conf.CompileFlags.Edits, SizeIs(1));
// Regex with no file.
Frag = {};
Frag.If.PathMatch.emplace_back("fo*");
EXPECT_FALSE(compileAndApply());
EXPECT_THAT(Diags.Diagnostics, IsEmpty());
EXPECT_THAT(Conf.CompileFlags.Edits, SizeIs(0));
// Following tests have a file path set.
Parm.Path = "bar";
// Non-matching regex.
Frag = {};
Frag.If.PathMatch.emplace_back("fo*");
EXPECT_FALSE(compileAndApply());
EXPECT_THAT(Diags.Diagnostics, IsEmpty());
// Matching regex.
Frag = {};
Frag.If.PathMatch.emplace_back("fo*");
Frag.If.PathMatch.emplace_back("ba*r");
EXPECT_TRUE(compileAndApply());
EXPECT_THAT(Diags.Diagnostics, IsEmpty());
// Excluded regex.
Frag = {};
Frag.If.PathMatch.emplace_back("b.*");
Frag.If.PathExclude.emplace_back(".*r");
EXPECT_FALSE(compileAndApply()) << "Included but also excluded";
EXPECT_THAT(Diags.Diagnostics, IsEmpty());
// Invalid regex.
Frag = {};
Frag.If.PathMatch.emplace_back("**]@theu");
EXPECT_TRUE(compileAndApply());
EXPECT_THAT(Diags.Diagnostics, SizeIs(1));
EXPECT_THAT(Diags.Diagnostics.front().Message, StartsWith("Invalid regex"));
// Valid regex and unknown key.
Frag = {};
Frag.If.HasUnrecognizedCondition = true;
Frag.If.PathMatch.emplace_back("ba*r");
EXPECT_FALSE(compileAndApply());
EXPECT_THAT(Diags.Diagnostics, IsEmpty());
// Only matches case-insensitively.
Frag = {};
Frag.If.PathMatch.emplace_back("B.*R");
EXPECT_THAT(Diags.Diagnostics, IsEmpty());
#ifdef CLANGD_PATH_CASE_INSENSITIVE
EXPECT_TRUE(compileAndApply());
#else
EXPECT_FALSE(compileAndApply());
#endif
Frag = {};
Frag.If.PathExclude.emplace_back("B.*R");
EXPECT_THAT(Diags.Diagnostics, IsEmpty());
#ifdef CLANGD_PATH_CASE_INSENSITIVE
EXPECT_FALSE(compileAndApply());
#else
EXPECT_TRUE(compileAndApply());
#endif
}
TEST_F(ConfigCompileTests, CompileCommands) {
Frag.CompileFlags.Add.emplace_back("-foo");
Frag.CompileFlags.Remove.emplace_back("--include-directory=");
std::vector<std::string> Argv = {"clang", "-I", "bar/", "--", "a.cc"};
EXPECT_TRUE(compileAndApply());
EXPECT_THAT(Conf.CompileFlags.Edits, SizeIs(2));
for (auto &Edit : Conf.CompileFlags.Edits)
Edit(Argv);
EXPECT_THAT(Argv, ElementsAre("clang", "-foo", "--", "a.cc"));
}
TEST_F(ConfigCompileTests, CompilationDatabase) {
Frag.CompileFlags.CompilationDatabase.emplace("None");
EXPECT_TRUE(compileAndApply());
EXPECT_EQ(Conf.CompileFlags.CDBSearch.Policy,
Config::CDBSearchSpec::NoCDBSearch);
Frag.CompileFlags.CompilationDatabase.emplace("Ancestors");
EXPECT_TRUE(compileAndApply());
EXPECT_EQ(Conf.CompileFlags.CDBSearch.Policy,
Config::CDBSearchSpec::Ancestors);
// Relative path not allowed without directory set.
Frag.CompileFlags.CompilationDatabase.emplace("Something");
EXPECT_TRUE(compileAndApply());
EXPECT_EQ(Conf.CompileFlags.CDBSearch.Policy,
Config::CDBSearchSpec::Ancestors)
<< "default value";
EXPECT_THAT(Diags.Diagnostics,
ElementsAre(DiagMessage(
"CompilationDatabase must be an absolute path, because this "
"fragment is not associated with any directory.")));
// Relative path allowed if directory is set.
Frag.Source.Directory = testRoot();
EXPECT_TRUE(compileAndApply());
EXPECT_EQ(Conf.CompileFlags.CDBSearch.Policy,
Config::CDBSearchSpec::FixedDir);
EXPECT_EQ(Conf.CompileFlags.CDBSearch.FixedCDBPath, testPath("Something"));
EXPECT_THAT(Diags.Diagnostics, IsEmpty());
// Absolute path allowed.
Frag.Source.Directory.clear();
Frag.CompileFlags.CompilationDatabase.emplace(testPath("Something2"));
EXPECT_TRUE(compileAndApply());
EXPECT_EQ(Conf.CompileFlags.CDBSearch.Policy,
Config::CDBSearchSpec::FixedDir);
EXPECT_EQ(Conf.CompileFlags.CDBSearch.FixedCDBPath, testPath("Something2"));
EXPECT_THAT(Diags.Diagnostics, IsEmpty());
}
TEST_F(ConfigCompileTests, Index) {
Frag.Index.Background.emplace("Skip");
EXPECT_TRUE(compileAndApply());
EXPECT_EQ(Conf.Index.Background, Config::BackgroundPolicy::Skip);
Frag = {};
Frag.Index.Background.emplace("Foo");
EXPECT_TRUE(compileAndApply());
EXPECT_EQ(Conf.Index.Background, Config::BackgroundPolicy::Build)
<< "by default";
EXPECT_THAT(
Diags.Diagnostics,
ElementsAre(DiagMessage(
"Invalid Background value 'Foo'. Valid values are Build, Skip.")));
}
TEST_F(ConfigCompileTests, PathSpecMatch) {
auto BarPath = llvm::sys::path::convert_to_slash(testPath("foo/bar.h"));
Parm.Path = BarPath;
struct {
std::string Directory;
std::string PathSpec;
bool ShouldMatch;
} Cases[] = {
{
// Absolute path matches.
"",
llvm::sys::path::convert_to_slash(testPath("foo/bar.h")),
true,
},
{
// Absolute path fails.
"",
llvm::sys::path::convert_to_slash(testPath("bar/bar.h")),
false,
},
{
// Relative should fail to match as /foo/bar.h doesn't reside under
// /baz/.
testPath("baz"),
"bar\\.h",
false,
},
{
// Relative should pass with /foo as directory.
testPath("foo"),
"bar\\.h",
true,
},
};
// PathMatch
for (const auto &Case : Cases) {
Frag = {};
Frag.If.PathMatch.emplace_back(Case.PathSpec);
Frag.Source.Directory = Case.Directory;
EXPECT_EQ(compileAndApply(), Case.ShouldMatch);
ASSERT_THAT(Diags.Diagnostics, IsEmpty());
}
// PathEclude
for (const auto &Case : Cases) {
SCOPED_TRACE(Case.Directory);
SCOPED_TRACE(Case.PathSpec);
Frag = {};
Frag.If.PathExclude.emplace_back(Case.PathSpec);
Frag.Source.Directory = Case.Directory;
EXPECT_NE(compileAndApply(), Case.ShouldMatch);
ASSERT_THAT(Diags.Diagnostics, IsEmpty());
}
}
TEST_F(ConfigCompileTests, DiagnosticSuppression) {
Frag.Diagnostics.Suppress.emplace_back("bugprone-use-after-move");
Frag.Diagnostics.Suppress.emplace_back("unreachable-code");
Frag.Diagnostics.Suppress.emplace_back("-Wunused-variable");
Frag.Diagnostics.Suppress.emplace_back("typecheck_bool_condition");
Frag.Diagnostics.Suppress.emplace_back("err_unexpected_friend");
Frag.Diagnostics.Suppress.emplace_back("warn_alloca");
EXPECT_TRUE(compileAndApply());
EXPECT_THAT(Conf.Diagnostics.Suppress.keys(),
UnorderedElementsAre("bugprone-use-after-move",
"unreachable-code", "unused-variable",
"typecheck_bool_condition",
"unexpected_friend", "warn_alloca"));
EXPECT_TRUE(isBuiltinDiagnosticSuppressed(diag::warn_unreachable,
Conf.Diagnostics.Suppress));
// Subcategory not respected/suppressed.
EXPECT_FALSE(isBuiltinDiagnosticSuppressed(diag::warn_unreachable_break,
Conf.Diagnostics.Suppress));
EXPECT_TRUE(isBuiltinDiagnosticSuppressed(diag::warn_unused_variable,
Conf.Diagnostics.Suppress));
EXPECT_TRUE(isBuiltinDiagnosticSuppressed(diag::err_typecheck_bool_condition,
Conf.Diagnostics.Suppress));
EXPECT_TRUE(isBuiltinDiagnosticSuppressed(diag::err_unexpected_friend,
Conf.Diagnostics.Suppress));
EXPECT_TRUE(isBuiltinDiagnosticSuppressed(diag::warn_alloca,
Conf.Diagnostics.Suppress));
Frag.Diagnostics.Suppress.emplace_back("*");
EXPECT_TRUE(compileAndApply());
EXPECT_TRUE(Conf.Diagnostics.SuppressAll);
EXPECT_THAT(Conf.Diagnostics.Suppress, IsEmpty());
}
TEST_F(ConfigCompileTests, Tidy) {
auto &Tidy = Frag.Diagnostics.ClangTidy;
Tidy.Add.emplace_back("bugprone-use-after-move");
Tidy.Add.emplace_back("llvm-*");
Tidy.Remove.emplace_back("llvm-include-order");
Tidy.Remove.emplace_back("readability-*");
Tidy.CheckOptions.emplace_back(
std::make_pair(std::string("StrictMode"), std::string("true")));
Tidy.CheckOptions.emplace_back(std::make_pair(
std::string("example-check.ExampleOption"), std::string("0")));
EXPECT_TRUE(compileAndApply());
EXPECT_EQ(
Conf.Diagnostics.ClangTidy.Checks,
"bugprone-use-after-move,llvm-*,-llvm-include-order,-readability-*");
EXPECT_EQ(Conf.Diagnostics.ClangTidy.CheckOptions.size(), 2U);
EXPECT_EQ(Conf.Diagnostics.ClangTidy.CheckOptions.lookup("StrictMode"),
"true");
EXPECT_EQ(Conf.Diagnostics.ClangTidy.CheckOptions.lookup(
"example-check.ExampleOption"),
"0");
EXPECT_THAT(Diags.Diagnostics, IsEmpty());
}
TEST_F(ConfigCompileTests, TidyBadChecks) {
auto &Tidy = Frag.Diagnostics.ClangTidy;
Tidy.Add.emplace_back("unknown-check");
Tidy.Remove.emplace_back("*");
Tidy.Remove.emplace_back("llvm-includeorder");
EXPECT_TRUE(compileAndApply());
// Ensure bad checks are stripped from the glob.
EXPECT_EQ(Conf.Diagnostics.ClangTidy.Checks, "-*");
EXPECT_THAT(
Diags.Diagnostics,
ElementsAre(
AllOf(DiagMessage("clang-tidy check 'unknown-check' was not found"),
DiagKind(llvm::SourceMgr::DK_Warning)),
AllOf(
DiagMessage("clang-tidy check 'llvm-includeorder' was not found"),
DiagKind(llvm::SourceMgr::DK_Warning))));
}
TEST_F(ConfigCompileTests, ExternalServerNeedsTrusted) {
Fragment::IndexBlock::ExternalBlock External;
External.Server.emplace("xxx");
Frag.Index.External = std::move(External);
compileAndApply();
EXPECT_THAT(
Diags.Diagnostics,
ElementsAre(DiagMessage(
"Remote index may not be specified by untrusted configuration. "
"Copy this into user config to use it.")));
EXPECT_EQ(Conf.Index.External.Kind, Config::ExternalIndexSpec::None);
}
TEST_F(ConfigCompileTests, ExternalBlockWarnOnMultipleSource) {
Frag.Source.Trusted = true;
Fragment::IndexBlock::ExternalBlock External;
External.File.emplace("");
External.Server.emplace("");
Frag.Index.External = std::move(External);
compileAndApply();
#ifdef CLANGD_ENABLE_REMOTE
EXPECT_THAT(
Diags.Diagnostics,
Contains(
AllOf(DiagMessage("Exactly one of File, Server or None must be set."),
DiagKind(llvm::SourceMgr::DK_Error))));
#else
ASSERT_TRUE(Conf.Index.External.hasValue());
EXPECT_EQ(Conf.Index.External->Kind, Config::ExternalIndexSpec::File);
#endif
}
TEST_F(ConfigCompileTests, ExternalBlockDisableWithNone) {
compileAndApply();
EXPECT_EQ(Conf.Index.External.Kind, Config::ExternalIndexSpec::None);
Fragment::IndexBlock::ExternalBlock External;
External.IsNone = true;
Frag.Index.External = std::move(External);
compileAndApply();
EXPECT_EQ(Conf.Index.External.Kind, Config::ExternalIndexSpec::None);
}
TEST_F(ConfigCompileTests, ExternalBlockErrOnNoSource) {
Frag.Index.External.emplace(Fragment::IndexBlock::ExternalBlock{});
compileAndApply();
EXPECT_THAT(
Diags.Diagnostics,
Contains(
AllOf(DiagMessage("Exactly one of File, Server or None must be set."),
DiagKind(llvm::SourceMgr::DK_Error))));
}
TEST_F(ConfigCompileTests, ExternalBlockDisablesBackgroundIndex) {
auto BazPath = testPath("foo/bar/baz.h", llvm::sys::path::Style::posix);
Parm.Path = BazPath;
Frag.Index.Background.emplace("Build");
Fragment::IndexBlock::ExternalBlock External;
External.File.emplace(testPath("foo"));
External.MountPoint.emplace(
testPath("foo/bar", llvm::sys::path::Style::posix));
Frag.Index.External = std::move(External);
compileAndApply();
EXPECT_EQ(Conf.Index.Background, Config::BackgroundPolicy::Skip);
}
TEST_F(ConfigCompileTests, ExternalBlockMountPoint) {
auto GetFrag = [](llvm::StringRef Directory,
llvm::Optional<const char *> MountPoint) {
Fragment Frag;
Frag.Source.Directory = Directory.str();
Fragment::IndexBlock::ExternalBlock External;
External.File.emplace(testPath("foo"));
if (MountPoint)
External.MountPoint.emplace(*MountPoint);
Frag.Index.External = std::move(External);
return Frag;
};
auto BarPath = testPath("foo/bar.h", llvm::sys::path::Style::posix);
BarPath = llvm::sys::path::convert_to_slash(BarPath);
Parm.Path = BarPath;
// Non-absolute MountPoint without a directory raises an error.
Frag = GetFrag("", "foo");
compileAndApply();
ASSERT_THAT(
Diags.Diagnostics,
ElementsAre(
AllOf(DiagMessage("MountPoint must be an absolute path, because this "
"fragment is not associated with any directory."),
DiagKind(llvm::SourceMgr::DK_Error))));
EXPECT_EQ(Conf.Index.External.Kind, Config::ExternalIndexSpec::None);
auto FooPath = testPath("foo/", llvm::sys::path::Style::posix);
FooPath = llvm::sys::path::convert_to_slash(FooPath);
// Ok when relative.
Frag = GetFrag(testRoot(), "foo/");
compileAndApply();
ASSERT_THAT(Diags.Diagnostics, IsEmpty());
ASSERT_EQ(Conf.Index.External.Kind, Config::ExternalIndexSpec::File);
EXPECT_THAT(Conf.Index.External.MountPoint, FooPath);
// None defaults to ".".
Frag = GetFrag(FooPath, llvm::None);
compileAndApply();
ASSERT_THAT(Diags.Diagnostics, IsEmpty());
ASSERT_EQ(Conf.Index.External.Kind, Config::ExternalIndexSpec::File);
EXPECT_THAT(Conf.Index.External.MountPoint, FooPath);
// Without a file, external index is empty.
Parm.Path = "";
Frag = GetFrag("", FooPath.c_str());
compileAndApply();
ASSERT_THAT(Diags.Diagnostics, IsEmpty());
ASSERT_EQ(Conf.Index.External.Kind, Config::ExternalIndexSpec::None);
// File outside MountPoint, no index.
auto BazPath = testPath("bar/baz.h", llvm::sys::path::Style::posix);
BazPath = llvm::sys::path::convert_to_slash(BazPath);
Parm.Path = BazPath;
Frag = GetFrag("", FooPath.c_str());
compileAndApply();
ASSERT_THAT(Diags.Diagnostics, IsEmpty());
ASSERT_EQ(Conf.Index.External.Kind, Config::ExternalIndexSpec::None);
// File under MountPoint, index should be set.
BazPath = testPath("foo/baz.h", llvm::sys::path::Style::posix);
BazPath = llvm::sys::path::convert_to_slash(BazPath);
Parm.Path = BazPath;
Frag = GetFrag("", FooPath.c_str());
compileAndApply();
ASSERT_THAT(Diags.Diagnostics, IsEmpty());
ASSERT_EQ(Conf.Index.External.Kind, Config::ExternalIndexSpec::File);
EXPECT_THAT(Conf.Index.External.MountPoint, FooPath);
// Only matches case-insensitively.
BazPath = testPath("fOo/baz.h", llvm::sys::path::Style::posix);
BazPath = llvm::sys::path::convert_to_slash(BazPath);
Parm.Path = BazPath;
FooPath = testPath("FOO/", llvm::sys::path::Style::posix);
FooPath = llvm::sys::path::convert_to_slash(FooPath);
Frag = GetFrag("", FooPath.c_str());
compileAndApply();
ASSERT_THAT(Diags.Diagnostics, IsEmpty());
#ifdef CLANGD_PATH_CASE_INSENSITIVE
ASSERT_EQ(Conf.Index.External.Kind, Config::ExternalIndexSpec::File);
EXPECT_THAT(Conf.Index.External.MountPoint, FooPath);
#else
ASSERT_EQ(Conf.Index.External.Kind, Config::ExternalIndexSpec::None);
#endif
}
TEST_F(ConfigCompileTests, AllScopes) {
// Defaults to true.
EXPECT_TRUE(compileAndApply());
EXPECT_TRUE(Conf.Completion.AllScopes);
Frag = {};
Frag.Completion.AllScopes = false;
EXPECT_TRUE(compileAndApply());
EXPECT_FALSE(Conf.Completion.AllScopes);
Frag = {};
Frag.Completion.AllScopes = true;
EXPECT_TRUE(compileAndApply());
EXPECT_TRUE(Conf.Completion.AllScopes);
}
} // namespace
} // namespace config
} // namespace clangd
} // namespace clang