src/test/groovy/ImmutableModificationTest.groovy

/*
 *  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
 *
 *    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 groovy

/**
 * check that the new asImmutable() method works
 * as specified in GROOVY-623
 *
 * @author <a href="mailto:jeremy.rayner@bigfoot.com">Jeremy Rayner</a>
 */

class ImmutableModificationTest extends GroovyTestCase {
    void testCollectionAsImmutable() {
        def challenger = ["Telson", "Sharna", "Darv", "Astra"]
        def hopefullyImmutable = challenger.asImmutable()
        try {
            challenger.add("Angel One")
            challenger << "Angel Two"

            // @todo fail("'challenger' is supposed to be an immutable collection.")

        } catch (UnsupportedOperationException e) {
            // success if this exception is thrown
            assert 4 == challenger.size()
        }
    }
}