src/type/test_helper.h

// Copyright 2020 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.

#ifndef SRC_TYPE_TEST_HELPER_H_
#define SRC_TYPE_TEST_HELPER_H_

#include <utility>

#include "gtest/gtest.h"
#include "src/program_builder.h"

namespace tint {
namespace type {

/// Helper class for testing
template <typename BASE>
class TestHelperBase : public BASE, public ProgramBuilder {
 public:
  /// Builds and returns the program. Must only be called once per test
  /// @return the built program
  Program Build() {
    diag::Formatter formatter;
    [&]() {
      ASSERT_TRUE(IsValid()) << "Builder program is not valid\n"
                             << formatter.format(Diagnostics());
    }();
    return Program(std::move(*this));
  }
};
using TestHelper = TestHelperBase<testing::Test>;

template <typename T>
using TestParamHelper = TestHelperBase<testing::TestWithParam<T>>;

}  // namespace type
}  // namespace tint

#endif  // SRC_TYPE_TEST_HELPER_H_