/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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
    *
    *      https://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.
   */
  package org.apache.commons.jexl3;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNull;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests for while statement.
   */
  @SuppressWarnings({"UnnecessaryBoxing", "AssertEqualsBetweenInconvertibleTypes"})
  class WhileTest extends JexlTestCase {
  
      public WhileTest() {
          super("WhileTest");
      }
  
      @Test
      void testSimpleWhileFalse() throws Exception {
          final JexlScript e = JEXL.createScript("while (false) ;");
          final JexlContext jc = new MapContext();
  
          final Object o = e.execute(jc);
          assertNull(o);
      }
  
      @Test
      void testWhileExecutesExpressionWhenLooping() throws Exception {
          final JexlScript e = JEXL.createScript("while (x < 10) x = x + 1;");
          final JexlContext jc = new MapContext();
          jc.set("x", Integer.valueOf(1));
  
          final Object o = e.execute(jc);
          assertEquals(Integer.valueOf(10), o);
      }
  
      @Test
      void testWhileWithBlock() throws Exception {
          final JexlScript e = JEXL.createScript("while (x < 10) { x = x + 1; y = y * 2; }");
          final JexlContext jc = new MapContext();
          jc.set("x", Integer.valueOf(1));
          jc.set("y", Integer.valueOf(1));
  
          final Object o = e.execute(jc);
          assertEquals(Integer.valueOf(512), o);
          assertEquals(Integer.valueOf(10), jc.get("x"), "x is wrong");
          assertEquals(Integer.valueOf(512), jc.get("y"), "y is wrong");
      }
  }