langtools/test/tools/javac/EarlyAssert.java

/*
 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * questions.
 */

/*
 * @test
 * @bug 4402864
 * @summary Verify that assertions are enabled before the class is initialized
 * and not thereafter
 * @author gafter
 * @build EarlyAssert EarlyAssertWrapper
 * @run main EarlyAssertWrapper
 */

/*
 * Verify that assertions are enabled until the class is initialized
 */

class EASuper {
    static {
        EarlyAssert.foo();
    }
}

public class EarlyAssert extends EASuper {
    static public void foo() {
        boolean assertionStatus = false;
        assert assertionStatus = true;
        if (!assertionStatus) {
            throw new Error("Assertions are not enabled before initialization as they should be.");
        }
    }
    public static void main(String[] args) {
        boolean assertionStatus = false;
        assert assertionStatus = true;
        if (assertionStatus) {
            throw new Error("Assertions are not disabled after initialization as they should be.");
        }
    }
}