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//===-- IncludeFixerTest.cpp - Include fixer unit tests -------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "InMemorySymbolIndex.h"
#include "IncludeFixer.h"
#include "SymbolIndexManager.h"
#include "unittests/Tooling/RewriterTestContext.h"
#include "clang/Tooling/Tooling.h"
#include "gtest/gtest.h"
namespace clang {
namespace include_fixer {
namespace {
using find_all_symbols::SymbolInfo;
static bool runOnCode(tooling::ToolAction *ToolAction, StringRef Code,
StringRef FileName,
const std::vector<std::string> &ExtraArgs) {
llvm::IntrusiveRefCntPtr<vfs::InMemoryFileSystem> InMemoryFileSystem(
new vfs::InMemoryFileSystem);
llvm::IntrusiveRefCntPtr<FileManager> Files(
new FileManager(FileSystemOptions(), InMemoryFileSystem));
// FIXME: Investigate why -fms-compatibility breaks tests.
std::vector<std::string> Args = {"include_fixer", "-fsyntax-only",
"-fno-ms-compatibility", FileName};
Args.insert(Args.end(), ExtraArgs.begin(), ExtraArgs.end());
tooling::ToolInvocation Invocation(
Args, ToolAction, Files.get(),
std::make_shared<PCHContainerOperations>());
InMemoryFileSystem->addFile(FileName, 0,
llvm::MemoryBuffer::getMemBuffer(Code));
InMemoryFileSystem->addFile("foo.h", 0,
llvm::MemoryBuffer::getMemBuffer("\n"));
InMemoryFileSystem->addFile("dir/bar.h", 0,
llvm::MemoryBuffer::getMemBuffer("\n"));
InMemoryFileSystem->addFile("dir/otherdir/qux.h", 0,
llvm::MemoryBuffer::getMemBuffer("\n"));
InMemoryFileSystem->addFile("header.h", 0,
llvm::MemoryBuffer::getMemBuffer("bar b;"));
return Invocation.run();
}
static std::string runIncludeFixer(
StringRef Code,
const std::vector<std::string> &ExtraArgs = std::vector<std::string>()) {
std::vector<SymbolInfo> Symbols = {
SymbolInfo("string", SymbolInfo::SymbolKind::Class, "<string>", 1,
{{SymbolInfo::ContextType::Namespace, "std"}}),
SymbolInfo("sting", SymbolInfo::SymbolKind::Class, "\"sting\"", 1,
{{SymbolInfo::ContextType::Namespace, "std"}}),
SymbolInfo("foo", SymbolInfo::SymbolKind::Class, "\"dir/otherdir/qux.h\"",
1, {{SymbolInfo::ContextType::Namespace, "b"},
{SymbolInfo::ContextType::Namespace, "a"}}),
SymbolInfo("bar", SymbolInfo::SymbolKind::Class, "\"bar.h\"", 1,
{{SymbolInfo::ContextType::Namespace, "b"},
{SymbolInfo::ContextType::Namespace, "a"}}),
SymbolInfo("Green", SymbolInfo::SymbolKind::Class, "\"color.h\"", 1,
{{SymbolInfo::ContextType::EnumDecl, "Color"},
{SymbolInfo::ContextType::Namespace, "b"},
{SymbolInfo::ContextType::Namespace, "a"}}),
SymbolInfo("Vector", SymbolInfo::SymbolKind::Class, "\"Vector.h\"", 1,
{{SymbolInfo::ContextType::Namespace, "__a"},
{SymbolInfo::ContextType::Namespace, "a"}},
/*num_occurrences=*/2),
SymbolInfo("Vector", SymbolInfo::SymbolKind::Class, "\"Vector.h\"", 2,
{{SymbolInfo::ContextType::Namespace, "a"}},
/*num_occurrences=*/1),
};
auto SymbolIndexMgr = llvm::make_unique<include_fixer::SymbolIndexManager>();
SymbolIndexMgr->addSymbolIndex(
llvm::make_unique<include_fixer::InMemorySymbolIndex>(Symbols));
IncludeFixerContext FixerContext;
IncludeFixerActionFactory Factory(*SymbolIndexMgr, FixerContext, "llvm");
runOnCode(&Factory, Code, "input.cc", ExtraArgs);
if (FixerContext.Headers.empty())
return Code;
tooling::Replacements Replacements =
clang::include_fixer::createInsertHeaderReplacements(
Code, "input.cc", FixerContext.Headers.front());
clang::RewriterTestContext Context;
clang::FileID ID = Context.createInMemoryFile("input.cc", Code);
clang::tooling::applyAllReplacements(Replacements, Context.Rewrite);
return Context.getRewrittenText(ID);
}
TEST(IncludeFixer, Typo) {
EXPECT_EQ("#include <string>\nstd::string foo;\n",
runIncludeFixer("std::string foo;\n"));
// FIXME: the current version of include-fixer does not get this test case
// right - header should be inserted before definition.
EXPECT_EQ(
"// comment\n#include \"foo.h\"\nstd::string foo;\n"
"#include \"dir/bar.h\"\n#include <string>\n",
runIncludeFixer("// comment\n#include \"foo.h\"\nstd::string foo;\n"
"#include \"dir/bar.h\"\n"));
EXPECT_EQ("#include \"foo.h\"\n#include <string>\nstd::string foo;\n",
runIncludeFixer("#include \"foo.h\"\nstd::string foo;\n"));
EXPECT_EQ(
"#include \"foo.h\"\n#include <string>\nstd::string::size_type foo;\n",
runIncludeFixer("#include \"foo.h\"\nstd::string::size_type foo;\n"));
// string without "std::" can also be fixed since fixed db results go through
// SymbolIndexManager, and SymbolIndexManager matches unqualified identifiers
// too.
EXPECT_EQ("#include <string>\nstring foo;\n",
runIncludeFixer("string foo;\n"));
// Fully qualified name.
EXPECT_EQ("#include <string>\n::std::string foo;\n",
runIncludeFixer("::std::string foo;\n"));
// Should not match std::string.
EXPECT_EQ("::string foo;\n", runIncludeFixer("::string foo;\n"));
}
TEST(IncludeFixer, IncompleteType) {
EXPECT_EQ(
"#include \"foo.h\"\n#include <string>\n"
"namespace std {\nclass string;\n}\nstring foo;\n",
runIncludeFixer("#include \"foo.h\"\n"
"namespace std {\nclass string;\n}\nstring foo;\n"));
}
TEST(IncludeFixer, MinimizeInclude) {
std::vector<std::string> IncludePath = {"-Idir/"};
EXPECT_EQ("#include \"otherdir/qux.h\"\na::b::foo bar;\n",
runIncludeFixer("a::b::foo bar;\n", IncludePath));
IncludePath = {"-isystemdir"};
EXPECT_EQ("#include <otherdir/qux.h>\na::b::foo bar;\n",
runIncludeFixer("a::b::foo bar;\n", IncludePath));
IncludePath = {"-iquotedir"};
EXPECT_EQ("#include \"otherdir/qux.h\"\na::b::foo bar;\n",
runIncludeFixer("a::b::foo bar;\n", IncludePath));
IncludePath = {"-Idir", "-Idir/otherdir"};
EXPECT_EQ("#include \"qux.h\"\na::b::foo bar;\n",
runIncludeFixer("a::b::foo bar;\n", IncludePath));
}
TEST(IncludeFixer, NestedName) {
EXPECT_EQ("#include \"dir/otherdir/qux.h\"\n"
"int x = a::b::foo(0);\n",
runIncludeFixer("int x = a::b::foo(0);\n"));
// FIXME: Handle simple macros.
EXPECT_EQ("#define FOO a::b::foo\nint x = FOO;\n",
runIncludeFixer("#define FOO a::b::foo\nint x = FOO;\n"));
EXPECT_EQ("#define FOO(x) a::##x\nint x = FOO(b::foo);\n",
runIncludeFixer("#define FOO(x) a::##x\nint x = FOO(b::foo);\n"));
// The empty namespace is cleaned up by clang-format after include-fixer
// finishes.
EXPECT_EQ("#include \"dir/otherdir/qux.h\"\n"
"\nint a = a::b::foo(0);\n",
runIncludeFixer("namespace a {}\nint a = a::b::foo(0);\n"));
}
TEST(IncludeFixer, MultipleMissingSymbols) {
EXPECT_EQ("#include <string>\nstd::string bar;\nstd::sting foo;\n",
runIncludeFixer("std::string bar;\nstd::sting foo;\n"));
}
TEST(IncludeFixer, ScopedNamespaceSymbols) {
EXPECT_EQ("#include \"bar.h\"\nnamespace a {\nb::bar b;\n}",
runIncludeFixer("namespace a {\nb::bar b;\n}"));
EXPECT_EQ("#include \"bar.h\"\nnamespace A {\na::b::bar b;\n}",
runIncludeFixer("namespace A {\na::b::bar b;\n}"));
EXPECT_EQ("#include \"bar.h\"\nnamespace a {\nvoid func() { b::bar b; }\n}",
runIncludeFixer("namespace a {\nvoid func() { b::bar b; }\n}"));
EXPECT_EQ("namespace A { c::b::bar b; }\n",
runIncludeFixer("namespace A { c::b::bar b; }\n"));
// FIXME: The header should not be added here. Remove this after we support
// full match.
EXPECT_EQ("#include \"bar.h\"\nnamespace A {\nb::bar b;\n}",
runIncludeFixer("namespace A {\nb::bar b;\n}"));
}
TEST(IncludeFixer, EnumConstantSymbols) {
EXPECT_EQ("#include \"color.h\"\nint test = a::b::Green;\n",
runIncludeFixer("int test = a::b::Green;\n"));
}
TEST(IncludeFixer, IgnoreSymbolFromHeader) {
std::string Code = "#include \"header.h\"";
EXPECT_EQ(Code, runIncludeFixer(Code));
}
// FIXME: add test cases for inserting and sorting multiple headers when
// include-fixer supports multiple headers insertion.
TEST(IncludeFixer, InsertAndSortSingleHeader) {
// Insert one header.
std::string Code = "#include \"a.h\"\n"
"#include \"foo.h\"\n"
"\n"
"namespace a { b::bar b; }";
std::string Expected = "#include \"a.h\"\n"
"#include \"bar.h\"\n"
"#include \"foo.h\"\n"
"\n"
"namespace a { b::bar b; }";
EXPECT_EQ(Expected, runIncludeFixer(Code));
}
TEST(IncludeFixer, DoNotDeleteMatchedSymbol) {
EXPECT_EQ("#include \"Vector.h\"\na::Vector v;",
runIncludeFixer("a::Vector v;"));
}
} // namespace
} // namespace include_fixer
} // namespace clang
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