// 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.

#include "src/ast/expression.h"

#include "src/ast/test_helper.h"
#include "src/ast/type/alias_type.h"
#include "src/ast/type/i32_type.h"

namespace tint {
namespace ast {
namespace {

class FakeExpr : public Expression {
 public:
  FakeExpr() : Expression(Source{}) {}

  FakeExpr* Clone(CloneContext*) const override { return nullptr; }
  bool IsValid() const override { return true; }
  void to_str(std::ostream&, size_t) const override {}
};

using ExpressionTest = TestHelper;

TEST_F(ExpressionTest, set_result_type) {
  FakeExpr e;
  e.set_result_type(ty.i32);
  ASSERT_NE(e.result_type(), nullptr);
  EXPECT_TRUE(e.result_type()->Is<type::I32>());
}

TEST_F(ExpressionTest, set_result_type_alias) {
  auto* a = ty.alias("a", ty.i32);
  auto* b = ty.alias("b", a);

  FakeExpr e;
  e.set_result_type(b);
  ASSERT_NE(e.result_type(), nullptr);
  EXPECT_TRUE(e.result_type()->Is<type::I32>());
}

}  // namespace
}  // namespace ast
}  // namespace tint