dcevm/dcevm/src/test/java7/com/github/dcevm/test/structural/TypeNarrowingMethodTest2.java

/*
 * Copyright (c) 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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package com.github.dcevm.test.structural;

import com.github.dcevm.test.TestUtil;
import org.junit.Before;
import org.junit.Ignore;
import org.junit.Test;

import static com.github.dcevm.test.util.HotSwapTestHelper.__toVersion__;
import static com.github.dcevm.test.util.HotSwapTestHelper.__version__;

/**
 * Test case for type narrowing where a non-active method fails verification because of the new hierarchy.
 *
 * @author Thomas Wuerthinger
 */
@Ignore
public class TypeNarrowingMethodTest2 {

    // Version 0
    public static class A {

        int x = 1;
        int y = 2;
        int z = 3;

        public int value() {
            return x;
        }

        public static int badMethod() {
            A a = indirectionMethod();
            return a.y;
        }
    }

    public static class B extends A {

    }


    // Version 1
    public static class B___1 {
    }

    // Version 2
    public static class A___2 {

        int x = 1;
        int y = 2;
        int z = 3;

        public int value() {
            return x;
        }

        public static int badMethod(B b) {
            return 5;
        }
    }

    public static class B___2 {
    }


    @Before
    public void setUp() throws Exception {
        __toVersion__(0);
        A a = new A();
        B b = new B();
    }

    public static B indirectionMethod() {
        return new B();
    }

    @Test
    public void testTypeNarrowingWithViolatingMethod() {
        final A a = new A();

        TestUtil.assertException(UnsupportedOperationException.class, new Runnable() {
          @Override
          public void run() {
            __toVersion__(1);
            System.out.println(a.badMethod());
          }
        });

        assert __version__() == 0;

        __toVersion__(2);

        __toVersion__(0);
    }
}