// 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/call_statement.h"

#include "gtest/gtest.h"
#include "src/ast/call_expression.h"
#include "src/ast/identifier_expression.h"

namespace tint {
namespace ast {
namespace {

using CallStatementTest = testing::Test;

TEST_F(CallStatementTest, Creation) {
  auto expr = std::make_unique<ast::CallExpression>(
      std::make_unique<ast::IdentifierExpression>("func"), ExpressionList{});
  auto* expr_ptr = expr.get();

  CallStatement c(std::move(expr));
  EXPECT_EQ(c.expr(), expr_ptr);
}

TEST_F(CallStatementTest, IsCall) {
  CallStatement c;
  EXPECT_TRUE(c.IsCall());
}

TEST_F(CallStatementTest, IsValid) {
  CallStatement c(std::make_unique<ast::CallExpression>(
      std::make_unique<ast::IdentifierExpression>("func"), ExpressionList{}));
  EXPECT_TRUE(c.IsValid());
}

TEST_F(CallStatementTest, IsValid_MissingExpr) {
  CallStatement c;
  EXPECT_FALSE(c.IsValid());
}

TEST_F(CallStatementTest, IsValid_InvalidExpr) {
  CallStatement c(std::make_unique<ast::CallExpression>());
  EXPECT_FALSE(c.IsValid());
}

TEST_F(CallStatementTest, ToStr) {
  CallStatement c(std::make_unique<ast::CallExpression>(
      std::make_unique<ast::IdentifierExpression>("func"), ExpressionList{}));

  std::ostringstream out;
  c.to_str(out, 2);
  EXPECT_EQ(out.str(), R"(  Call{
    Identifier{func}
    (
    )
  }
)");
}

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