forked from OSchip/llvm-project
75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
//===-- CanonicalIncludesTests.cpp - --------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "index/CanonicalIncludes.h"
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#include "gtest/gtest.h"
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namespace clang {
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namespace clangd {
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namespace {
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TEST(CanonicalIncludesTest, CStandardLibrary) {
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CanonicalIncludes CI;
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auto Language = LangOptions();
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Language.C11 = true;
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addSystemHeadersMapping(&CI, Language);
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// Usual standard library symbols are mapped correctly.
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EXPECT_EQ("<stdio.h>", CI.mapHeader("path/stdio.h", "printf"));
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}
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TEST(CanonicalIncludesTest, CXXStandardLibrary) {
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CanonicalIncludes CI;
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auto Language = LangOptions();
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Language.CPlusPlus = true;
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addSystemHeadersMapping(&CI, Language);
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// Usual standard library symbols are mapped correctly.
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EXPECT_EQ("<vector>", CI.mapHeader("path/vector.h", "std::vector"));
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EXPECT_EQ("<cstdio>", CI.mapHeader("path/stdio.h", "std::printf"));
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// std::move is ambiguous, currently mapped only based on path
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EXPECT_EQ("<utility>", CI.mapHeader("libstdc++/bits/move.h", "std::move"));
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EXPECT_EQ("path/utility.h", CI.mapHeader("path/utility.h", "std::move"));
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// Unknown std symbols aren't mapped.
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EXPECT_EQ("foo/bar.h", CI.mapHeader("foo/bar.h", "std::notathing"));
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// iosfwd declares some symbols it doesn't own.
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EXPECT_EQ("<ostream>", CI.mapHeader("iosfwd", "std::ostream"));
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// And (for now) we assume it owns the others.
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EXPECT_EQ("<iosfwd>", CI.mapHeader("iosfwd", "std::notwathing"));
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}
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TEST(CanonicalIncludesTest, PathMapping) {
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// As used for IWYU pragmas.
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CanonicalIncludes CI;
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CI.addMapping("foo/bar", "<baz>");
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EXPECT_EQ("<baz>", CI.mapHeader("foo/bar", "some::symbol"));
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EXPECT_EQ("bar/bar", CI.mapHeader("bar/bar", "some::symbol"));
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}
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TEST(CanonicalIncludesTest, SymbolMapping) {
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// As used for standard library.
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CanonicalIncludes CI;
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CI.addSymbolMapping("some::symbol", "<baz>");
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EXPECT_EQ("<baz>", CI.mapHeader("foo/bar", "some::symbol"));
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EXPECT_EQ("foo/bar", CI.mapHeader("foo/bar", "other::symbol"));
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}
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TEST(CanonicalIncludesTest, Precedence) {
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CanonicalIncludes CI;
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CI.addMapping("some/path", "<path>");
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CI.addSymbolMapping("some::symbol", "<symbol>");
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// Symbol mapping beats path mapping.
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EXPECT_EQ("<symbol>", CI.mapHeader("some/path", "some::symbol"));
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}
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} // namespace
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} // namespace clangd
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} // namespace clang
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