// 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/ast/increment_decrement_statement.h"

#include "gtest/gtest-spi.h"
#include "src/tint/ast/test_helper.h"

namespace tint::ast {
namespace {

using IncrementDecrementStatementTest = TestHelper;

TEST_F(IncrementDecrementStatementTest, Creation) {
  auto* expr = Expr("expr");

  auto* i = create<IncrementDecrementStatement>(expr, true);
  EXPECT_EQ(i->lhs, expr);
  EXPECT_TRUE(i->increment);
}

TEST_F(IncrementDecrementStatementTest, Creation_WithSource) {
  auto* expr = Expr("expr");
  auto* i = create<IncrementDecrementStatement>(Source{Source::Location{20, 2}},
                                                expr, true);
  auto src = i->source;
  EXPECT_EQ(i->lhs, expr);
  EXPECT_TRUE(i->increment);
  EXPECT_EQ(src.range.begin.line, 20u);
  EXPECT_EQ(src.range.begin.column, 2u);
}

TEST_F(IncrementDecrementStatementTest, IsIncrementDecrement) {
  auto* expr = Expr("expr");
  auto* i = create<IncrementDecrementStatement>(expr, true);
  EXPECT_TRUE(i->Is<IncrementDecrementStatement>());
}

TEST_F(IncrementDecrementStatementTest, Decrement) {
  auto* expr = Expr("expr");
  auto* i = create<IncrementDecrementStatement>(expr, false);
  EXPECT_EQ(i->lhs, expr);
  EXPECT_FALSE(i->increment);
}

TEST_F(IncrementDecrementStatementTest, Assert_DifferentProgramID_Expr) {
  EXPECT_FATAL_FAILURE(
      {
        ProgramBuilder b1;
        ProgramBuilder b2;
        b1.create<IncrementDecrementStatement>(b2.Expr(true), true);
      },
      "internal compiler error");
}

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