dawn-cmake/src/tint/utils/result_test.cc
Ben Clayton e68d4506c0 tint/resolver: Consistently use utils::Result in ConstEval
Instead of using builder.Diagnostics().contains_errors()

Produces cleaner code and reduces scope of error handling.

Bug: tint:1661
Change-Id: I35af5ad1c6553f2cf74d1ce92dc14984f93b9db4
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/102161
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
2022-09-20 09:26:21 +00:00

68 lines
1.5 KiB
C++

// 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