@Test
    void testDepth() {
        ResolutionNode a1n = createResolutionNode(a1);
        ResolutionNode b1n = createResolutionNode(b1);
        ResolutionNode a2n = createResolutionNode(a2, b1n);

        assertResolveConflict(a2n, a1n, a2n);
    }

    /**
     * Tests that <code>a:2.0</code> wins in the scenario:
     * <pre>
     * b:1.0 -&gt; a:2.0
     * a:1.0
     * </pre>
     */
    @Test

    @Test
    void testDepth() {
        ResolutionNode a1n = createResolutionNode(a1);
        ResolutionNode b1n = createResolutionNode(b1);
        ResolutionNode a2n = createResolutionNode(a2, b1n);

        assertResolveConflict(a2n, a1n, a2n);
    }

    /**
     * Tests that <code>a:2.0</code> wins in the scenario:
     * <pre>
     * b:1.0 -&gt; a:2.0
     * a:1.0
     * </pre>
     */
    @Test

    @Test
    void testDepth() {
        ResolutionNode a1n = createResolutionNode(a1);
        ResolutionNode b1n = createResolutionNode(b1);
        ResolutionNode a2n = createResolutionNode(a2, b1n);

        assertResolveConflict(a1n, a1n, a2n);
    }

    /**
     * Tests that <code>a:1.0</code> wins in the scenario:
     * <pre>
     * b:1.0 -&gt; a:2.0
     * a:1.0
     * </pre>
     */
    @Test

    @Test
    void testDepth() {
        ResolutionNode a1n = createResolutionNode(a1);
        ResolutionNode b1n = createResolutionNode(b1);
        ResolutionNode a2n = createResolutionNode(a2, b1n);

        assertResolveConflict(a1n, a1n, a2n);
    }

    /**
     * Tests that <code>a:1.0</code> wins in the scenario:
     * <pre>
     * b:1.0 -&gt; a:2.0
     * a:1.0
     * </pre>
     */
    @Test

    }

    // protected methods ------------------------------------------------------

    protected ConflictResolver getConflictResolver() {
        return conflictResolver;
    }

    protected void assertResolveConflict(
            ResolutionNode expectedNode, ResolutionNode actualNode1, ResolutionNode actualNode2) {
        ResolutionNode resolvedNode = getConflictResolver().resolveConflict(actualNode1, actualNode2);