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// Copyright 2022 The Tint Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "src/tint/utils/result.h"
#include <string>
#include "gmock/gmock.h"
namespace tint::utils {
namespace {
TEST(ResultTest, SuccessInt) {
auto r = Result<int>(123);
EXPECT_TRUE(r);
EXPECT_FALSE(!r);
EXPECT_EQ(r.Get(), 123);
}
TEST(ResultTest, SuccessStruct) {
struct S {
int value;
};
auto r = Result<S>({123});
EXPECT_TRUE(r);
EXPECT_FALSE(!r);
EXPECT_EQ(r->value, 123);
}
TEST(ResultTest, Failure) {
auto r = Result<int>(Failure);
EXPECT_FALSE(r);
EXPECT_TRUE(!r);
}
TEST(ResultTest, CustomFailure) {
auto r = Result<int, std::string>("oh noes!");
EXPECT_FALSE(r);
EXPECT_TRUE(!r);
EXPECT_EQ(r.Failure(), "oh noes!");
}
TEST(ResultTest, ValueCast) {
struct X {};
struct Y : X {};
Y* y = nullptr;
auto r_y = Result<Y*>{y};
auto r_x = Result<X*>{r_y};
(void)r_x;
(void)r_y;
}
} // namespace
} // namespace tint::utils