ParseFailuresTest.java

/**
* 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 malformed expressions and scripts.
 * ({@link JexlEngine#createExpression(String)} and
 * {@link JexlEngine#createScript(String)} should throw
 * {@link JexlException}s).
 *
 * @since 1.1
 */
public class ParseFailuresTest extends JexlTestCase {

    /**
     * Create the test.
     *
     * @param testName name of the test
     */
    public ParseFailuresTest(String testName) {
        super(testName);
        JEXL.setSilent(false);
    }

    public void testMalformedExpression1() throws Exception {
        // this will throw a JexlException
        String badExpression = "eq";
        try {
            JEXL.createExpression(badExpression);
            fail("Parsing \"" + badExpression
                + "\" should result in a JexlException");
        } catch (JexlException pe) {
            // expected
            JEXL.logger.error(pe);
        }
    }

    public void testMalformedExpression2() throws Exception {
        // this will throw a TokenMgrErr, which we rethrow as a JexlException
        String badExpression = "?";
        try {
            JEXL.createExpression(badExpression);
            fail("Parsing \"" + badExpression
                + "\" should result in a JexlException");
        } catch (JexlException pe) {
            // expected
            JEXL.logger.error(pe);
        }
    }

    public void testMalformedScript1() throws Exception {
        // this will throw a TokenMgrErr, which we rethrow as a JexlException
        String badScript = "eq";
        try {
            JEXL.createScript(badScript);
            fail("Parsing \"" + badScript
                + "\" should result in a JexlException");
        } catch (JexlException pe) {
            // expected
            JEXL.logger.error(pe);
        }
    }


    public void testMalformedScript2() throws Exception {
        // this will throw a TokenMgrErr, which we rethrow as a JexlException
        String badScript = "?";
        try {
            JEXL.createScript(badScript);
            fail("Parsing \"" + badScript
                + "\" should result in a JexlException");
        } catch (JexlException pe) {
            // expected
            JEXL.logger.error(pe);
        }
    }

    public void testMalformedScript3() throws Exception {
        // this will throw a TokenMgrErr, which we rethrow as a JexlException
        String badScript = "foo=1;bar=2;a?b:c:d;";
        try {
            JEXL.createScript(badScript);
            fail("Parsing \"" + badScript
                + "\" should result in a JexlException");
        } catch (JexlException pe) {
            // expected
            JEXL.logger.error(pe);
        }
    }

}