immutablemodificationtest.groovy

来自「Groovy动态语言 运行在JVM中的动态语言 可以方便的处理业务逻辑变化大的业」· GROOVY 代码 · 共 24 行

/**
 * check that the new asImmutable() method works
 * as specified in GROOVY-623
 *
 * @author <a href="mailto:[e-mail]">Jeremy Rayner</a>
 * @version $Revision: 2281 $
 */

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()
        }
    }
}