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//===- unittest/Tooling/HeaderAnalysisTest.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 "clang/Tooling/Inclusions/HeaderAnalysis.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Testing/TestAST.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
namespace clang {
namespace tooling {
namespace {
using testing::Eq;
TEST(HeaderAnalysisTest, IsSelfContained) {
TestInputs Inputs;
Inputs.Code = R"cpp(
#include "headerguard.h"
#include "pragmaonce.h"
#import "imported.h"
#include "bad.h"
#include "unguarded.h"
)cpp";
Inputs.ExtraFiles["headerguard.h"] = R"cpp(
#ifndef HEADER_H
#define HEADER_H
#endif HEADER_H
)cpp";
Inputs.ExtraFiles["pragmaonce.h"] = R"cpp(
#pragma once
)cpp";
Inputs.ExtraFiles["imported.h"] = "";
Inputs.ExtraFiles["unguarded.h"] = "";
Inputs.ExtraFiles["bad.h"] = R"cpp(
#pragma once
#if defined(INSIDE_H)
#error "Only ... can be included directly"
#endif
)cpp";
TestAST AST(Inputs);
const auto &SM = AST.sourceManager();
auto &FM = SM.getFileManager();
auto &HI = AST.preprocessor().getHeaderSearchInfo();
EXPECT_TRUE(isSelfContainedHeader(FM.getFile("headerguard.h").get(), SM, HI));
EXPECT_TRUE(isSelfContainedHeader(FM.getFile("pragmaonce.h").get(), SM, HI));
EXPECT_TRUE(isSelfContainedHeader(FM.getFile("imported.h").get(), SM, HI));
EXPECT_TRUE(
isSelfContainedHeader(SM.getFileEntryForID(SM.getMainFileID()), SM, HI));
EXPECT_FALSE(isSelfContainedHeader(FM.getFile("unguarded.h").get(), SM, HI));
EXPECT_FALSE(isSelfContainedHeader(FM.getFile("bad.h").get(), SM, HI));
}
TEST(HeaderAnalysisTest, CodeContainsImports) {
EXPECT_TRUE(codeContainsImports(R"cpp(
#include "foo.h"
#import "NSFoo.h"
int main() {
foo();
}
)cpp"));
EXPECT_TRUE(codeContainsImports(R"cpp(
#include "foo.h"
int main() {
foo();
}
#import "NSFoo.h"
)cpp"));
EXPECT_FALSE(codeContainsImports(R"cpp(
#include "foo.h"
int main() {
foo();
}
)cpp"));
}
TEST(HeaderAnalysisTest, ParseIWYUPragma) {
EXPECT_THAT(parseIWYUPragma("// IWYU pragma: keep"), Eq("keep"));
EXPECT_THAT(parseIWYUPragma("// IWYU pragma: keep me\netc"),
Eq("keep me"));
EXPECT_THAT(parseIWYUPragma("/* IWYU pragma: keep */"), Eq("keep"));
EXPECT_EQ(parseIWYUPragma("// IWYU pragma: keep"), std::nullopt)
<< "Prefix is sensitive to whitespace";
EXPECT_EQ(parseIWYUPragma("// IWYU pragma:keep"), std::nullopt)
<< "Prefix is sensitive to whitespace";
EXPECT_EQ(parseIWYUPragma("/\n* IWYU pragma: keep */"), std::nullopt)
<< "Must start with /* or //";
}
} // namespace
} // namespace tooling
} // namespace clang
|
