Examples of java.beans.Statement.execute()

java.beans.Statement.execute()
The execute method finds a method whose name is the same as the methodName property, and invokes the method on the target. When the target's class defines many methods with the given name the implementation should choose the most specific method using the algorithm specified in the Java Language Specification (15.11). The dynamic class of the target and arguments are used in place of the compile-time type information and, like the java.lang.reflect.Method class itself, conversion between primitive values and their associated wrapper classes is handled internally.
The following method types are handled as special cases:
- Static methods may be called by using a class object as the target.
- The reserved method name "new" may be used to call a class's constructor as if all classes defined static "new" methods. Constructor invocations are typically considered Expressions rather than Statements as they return a value.
- The method names "get" and "set" defined in the java.util.List interface may also be applied to array instances, mapping to the static methods of the same name in the Array class.

     */
    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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    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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     * 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();

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        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) };

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        // 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);
    }
    
    /*
     * Test the method execute() with the Class object, a static method name and

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     * valid arguments.
     */
    public void testExecute_NormalStaticMethodViaClass() throws Exception {
        Object[] arguments = new Object[] { new Object() };
        Statement t = new Statement(MockObject.class, "staticMethod", arguments);
        t.execute();
        MockObject.assertCalled("staticMethod", arguments);
    }


    /*
     * Test the method execute() with an object, a static method name and valid

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     */
    public void testExecute_NormalStaticMethodViaObject() throws Exception {
        MockObject mo = new MockObject(false);
        Object[] arguments = new Object[] { new Object() };
        Statement t = new Statement(mo, "staticMethod", arguments);
        t.execute();
        MockObject.assertCalled("staticMethod", arguments);
    }


    /*
     * Test the method execute() with a Class object of a normal class that has

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     * name "forName" and valid argument "string".
     */
    public void testExecute_AmbiguousStaticMethod() throws Exception {
        Object[] arguments = new String[] { "test" };
        Statement t = new Statement(MockObject.class, "forName", arguments);
        t.execute();
        MockObject.assertCalled("forName", arguments);


        t = new Statement(String.class, "forName",
                new Object[] { "java.lang.String" });
        t.execute();

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        t.execute();
        MockObject.assertCalled("forName", arguments);


        t = new Statement(String.class, "forName",
                new Object[] { "java.lang.String" });
        t.execute();
    }


    /*
     * Test the method execute() with the special method Class.forName().
     */

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     * Test the method execute() with the special method Class.forName().
     */
    public void testExecute_ClassForName() throws Exception {
        Object[] arguments = new String[] { Statement.class.getName() };
        Statement t = new Statement(Class.class, "forName", arguments);
        t.execute();


        t = new Statement(String.class, "forName",
                new Object[] { "java.lang.String" });
        t.execute();
    }

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