Files
carbon-lang/common/metaprogramming_test.cpp
T
CanftIn 9eb040d1c0 Add unittest for covering ErrorBuilder implicit cast and metaprogramming (#2882)
- update unittest of Error, cover the casting of ErrorBuilder.
- add unittest of metaprogramming.h
2023-06-08 09:31:17 -07:00

33 lines
834 B
C++

// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include "common/metaprogramming.h"
#include <gtest/gtest.h>
#include <string>
#include "llvm/Support/raw_ostream.h"
namespace Carbon::Testing {
namespace {
TEST(MetaProgrammingTest, RequiresBasic) {
bool result = Requires<int, int>([](int a, int b) { return a + b; });
EXPECT_TRUE(result);
}
struct TypeWithPrint {
void Print(llvm::raw_ostream& os) const { os << "Test"; }
};
TEST(MetaProgrammingTest, RequiresPrintMethod) {
bool result = Requires<const TypeWithPrint, llvm::raw_ostream>(
[](auto&& t, auto&& out) -> decltype(t.Print(out)) {});
EXPECT_TRUE(result);
}
} // namespace
} // namespace Carbon::Testing