/**
* Copyright 2016 Nabarun Mondal
* 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.
*
*/
package com.noga.njexl.lang;
/**
* Tests for while statement.
* @since 1.1
*/
public class WhileTest extends JexlTestCase {
public WhileTest(String testName) {
super(testName);
}
public void testSimpleWhileFalse() throws Exception {
Expression e = JEXL.createExpression("while (false) ;");
JexlContext jc = new MapContext();
Object o = e.evaluate(jc);
assertNull("Result is not null", o);
}
public void testWhileExecutesExpressionWhenLooping() throws Exception {
Expression e = JEXL.createExpression("while (x < 10) x = x + 1;");
JexlContext jc = new MapContext();
jc.set("x", new Integer(1));
Object o = e.evaluate(jc);
assertEquals("Result is wrong", new Integer(10), o);
}
public void testWhileWithBlock() throws Exception {
Expression e = JEXL.createExpression("while (x < 10) { x = x + 1; y = y * 2; }");
JexlContext jc = new MapContext();
jc.set("x", new Integer(1));
jc.set("y", new Integer(1));
Object o = e.evaluate(jc);
assertEquals("Result is wrong", new Integer(512), o);
assertEquals("x is wrong", new Integer(10), jc.get("x"));
assertEquals("y is wrong", new Integer(512), jc.get("y"));
}
}