forked from OSchip/llvm-project
104 lines
4.0 KiB
C++
104 lines
4.0 KiB
C++
//===--- TweakTesting.h - Test helpers for refactoring actions ---*- 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CLANG_TOOLS_EXTRA_UNITTESTS_CLANGD_TWEAKTESTING_H
|
|
#define LLVM_CLANG_TOOLS_EXTRA_UNITTESTS_CLANGD_TWEAKTESTING_H
|
|
|
|
#include "TestTU.h"
|
|
#include "gtest/gtest.h"
|
|
#include "gmock/gmock.h"
|
|
|
|
namespace clang {
|
|
namespace clangd {
|
|
|
|
// Fixture base for testing tweaks. Intended to be subclassed for each tweak.
|
|
//
|
|
// Usage:
|
|
// TWEAK_TEST(ExpandAutoType);
|
|
//
|
|
// TEST_F(ExpandAutoTypeTest, ShortensTypes) {
|
|
// Header = R"cpp(
|
|
// namespace foo { template<typename> class X{}; }
|
|
// using namespace foo;
|
|
// )cpp";
|
|
// Context = Function;
|
|
// EXPECT_THAT(apply("[[auto]] X = foo<int>();"),
|
|
// "foo<int> X = foo<int();");
|
|
// EXPECT_AVAILABLE("^a^u^t^o^ X = foo<int>();");
|
|
// EXPECT_UNAVAILABLE("auto ^X^ = ^foo<int>();");
|
|
// }
|
|
class TweakTest : public ::testing::Test {
|
|
const char *TweakID;
|
|
|
|
public:
|
|
// Inputs are wrapped in file boilerplate before attempting to apply a tweak.
|
|
// Context describes the type of boilerplate.
|
|
enum CodeContext {
|
|
// Code snippet is placed directly into the source file. e.g. a declaration.
|
|
File,
|
|
// Snippet will appear within a function body. e.g. a statement.
|
|
Function,
|
|
// Snippet is an expression.
|
|
Expression,
|
|
};
|
|
|
|
protected:
|
|
TweakTest(const char *TweakID) : TweakID(TweakID) {}
|
|
|
|
// Contents of a header file to be implicitly included.
|
|
// This typically contains declarations that will be used for a set of related
|
|
// testcases.
|
|
std::string Header;
|
|
|
|
// Context in which snippets of code should be placed to run tweaks.
|
|
CodeContext Context = File;
|
|
|
|
// Apply the current tweak to the range (or point) in MarkedCode.
|
|
// MarkedCode will be wrapped according to the Context.
|
|
// - if the tweak produces edits, returns the edited code (without markings).
|
|
// The context added to MarkedCode will be stripped away before returning,
|
|
// unless the tweak edited it.
|
|
// - if the tweak produces a message, returns "message:\n<message>"
|
|
// - if prepare() returns false, returns "unavailable"
|
|
// - if apply() returns an error, returns "fail: <message>"
|
|
std::string apply(llvm::StringRef MarkedCode) const;
|
|
|
|
// Accepts a code snippet with many ranges (or points) marked, and returns a
|
|
// list of snippets with one range marked each.
|
|
// Primarily used from EXPECT_AVAILABLE/EXPECT_UNAVAILABLE macro.
|
|
static std::vector<std::string> expandCases(llvm::StringRef MarkedCode);
|
|
|
|
// Returns a matcher that accepts marked code snippets where the tweak is
|
|
// available at the marked range.
|
|
::testing::Matcher<llvm::StringRef> isAvailable() const;
|
|
};
|
|
|
|
#define TWEAK_TEST(TweakID) \
|
|
class TweakID##Test : public ::clang::clangd::TweakTest { \
|
|
protected: \
|
|
TweakID##Test() : TweakTest(#TweakID) {} \
|
|
}
|
|
|
|
#define EXPECT_AVAILABLE(MarkedCode) \
|
|
do { \
|
|
for (const auto &Case : expandCases(MarkedCode)) \
|
|
EXPECT_THAT(Case, ::clang::clangd::TweakTest::isAvailable()); \
|
|
} while (0)
|
|
|
|
#define EXPECT_UNAVAILABLE(MarkedCode) \
|
|
do { \
|
|
for (const auto &Case : expandCases(MarkedCode)) \
|
|
EXPECT_THAT(Case, \
|
|
::testing::Not(::clang::clangd::TweakTest::isAvailable())); \
|
|
} while (0)
|
|
|
|
} // namespace clangd
|
|
} // namespace clang
|
|
|
|
#endif
|