/*
 * 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");
    }
}
