Examples of java.beans.Statement

java.beans.Statement
A Statement object represents a primitive statement in which a single method is applied to a target and a set of arguments - as in "a.setFoo(b)". Note that where this example uses names to denote the target and its argument, a statement object does not require a name space and is constructed with the values themselves. The statement object associates the named method with its environment as a simple set of values: the target and an array of argument values. @since 1.4 @version 1.31 05/23/06 @author Philip Milne

     * Test the method execute() with a normal object, a valid method that
     * throws an exception and valid arguments.
     */
    public void testExecute_ExceptionalMethod() throws Exception {
        MockObject mo = new MockObject(false);
        Statement t = new Statement(mo, "method", new Object[] { null, null });
        try {
            t.execute();
            fail("Should throw NullPointerException!");
        } catch (NullPointerException ex) {
            // expected
        }
        MockObject.assertCalled("method4", new Object[] { null, null });

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     * Test the method execute() with a normal object and a non-existing method
     * name.
     */
    public void testExecute_NonExistingMethod() throws Exception {
        MockObject mo = new MockObject(false);
        Statement t = new Statement(mo, "method_not_existing", new Object[] {
                null, null });
        try {
            t.execute();
            fail("Should throw NoSuchMethodException!");
        } catch (NoSuchMethodException ex) {
            // expected
        }
    }

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    /*
     * Test the method execute() with a null object.
     */
    public void testExecute_NullTarget() throws Exception {
        Statement t = new Statement(null, "method_not_existing", new Object[] {
                null, null });
        try {
            t.execute();
            fail("Should throw NullPointerException!");
        } catch (NullPointerException ex) {
            // expected
        }
    }

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     * Test the method execute() with a normal object, a valid method and
     * invalid arguments (in terms of type, numbers, etc.).
     */
    public void testExecute_InvalidArguments() throws Exception {
        MockObject mo = new MockObject(false);
        Statement t = new Statement(mo, "method", new Object[] { new Object(),
                new Object(), new Object() });
        try {
            t.execute();
            fail("Should throw NoSuchMethodException!");
        } catch (NoSuchMethodException ex) {
            // expected
        }
    }

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     * valid arguments.
     */
    public void testExecute_OverloadedMethods() throws Exception {
        MockObject mo = new MockObject(false);
        Object[] arguments;
        Statement t;


        arguments = new Object[] { new Object() };
        t = new Statement(mo, "method", arguments);
        t.execute();
        MockObject.assertCalled("method2", arguments);


        arguments = new Object[] { "test" };
        t = new Statement(mo, "method", arguments);
        t.execute();
        MockObject.assertCalled("method3", arguments);


        arguments = new Object[] { new Integer(117) };
        t = new Statement(mo, "method", arguments);
        t.execute();
        MockObject.assertCalled("method1-3", arguments);
    }

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    /*
     * Test the method execute() with a normal object, the method name "new" and
     * valid arguments.
     */
    public void testExecute_NormalConstructor() throws Exception {
        Statement t = new Statement(MockObject.class, "new", new Object[0]);
        t.execute();
        MockObject.assertCalled("new0", new Object[0]);
        t = new Statement(MockObject.class, "new", null);
        t.execute();
        MockObject.assertCalled("new0", new Object[0]);
    }

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     * Test the method execute() with a normal object, normal constructor ("new"
     * method) and null arguments.
     */
    public void testExecute_NormalConstructorNull() throws Exception {
        Object[] arguments = new Object[] { null, null };
        Statement t = new Statement(MockObject.class, "new", arguments);


        try {
            t.execute();
            fail("Should throw NullPointerException!");
        } catch (NullPointerException ex) {
            // expected
        }
        MockObject.assertCalled("new4", arguments);

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    /*
     * Test the method execute() with a normal object, the method name "new"
     * that throws an exception and valid arguments.
     */
    public void testExecute_ExceptionalConstructor() throws Exception {
        Statement t = new Statement(MockObject.class, "new", new Object[] {
                null, null });
        try {
            t.execute();
            fail("Should throw NullPointerException!");
        } catch (NullPointerException ex) {
            // expected
        }
        MockObject.assertCalled("new4", new Object[] { null, null });

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    /*
     * Test the method execute() with a normal object, the method name "new" and
     * invalid arguments (in terms of type, numbers, etc.).
     */
    public void testExecute_NonExistingConstructor() throws Exception {
        Statement t = new Statement(MockObject.class, "new", new Object[] {
                null, null, null, null });


        try {
            t.execute();
            fail("Should throw NoSuchMethodException!");
        } catch (NoSuchMethodException ex) {
            // expected
        }
    }

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     * Test the method execute() with a normal object with overloaded
     * constructors, the method name "new" and valid arguments.
     */
    public void testExecute_OverloadedConstructors() throws Exception {
        Object[] arguments = new Object[] { new Object() };
        Statement t = new Statement(MockObject.class, "new", arguments);
        t.execute();
        MockObject.assertCalled("new2", arguments);


        arguments = new Object[] { "test" };
        t = new Statement(MockObject.class, "new", arguments);
        t.execute();
        //FIXME: the following 2 commented assert cannot pass neither in RI nor in Harmony (HARMONY-4392),
        // waiting for dev-list approval to fix Harmony implementation following spec        
//         MockObject.assertCalled("new3", arguments);


        Object[] arguments2 = new Object[] { new Integer(1) };
        t = new Statement(MockObject.class, "new", arguments2);
        t.execute();
//        MockObject.assertCalled("new1-2", arguments2);
    }

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