How to mock static client side DOM calls with PowerMock?

[membersound]

Hi,

I have a class Bar that extends Foo. In Foo there is a DOM.createUniqueId()that 
I want to mock.

What am I missing in the following code?


Foo {
    String id;

    public Foo() {
        String id = DOM.createUniqueId();
    }    
}

Bar extends Foo {
    public Bar() {
        super();
    }

    public boolean testMe() {
        return true;
    }
}


@RunWith(PowerMockRunner.class)
@PrepareForTest(DOM.class)
Class TestFoo {
    @Test
    public void testFoo() {
        PowerMockito.mockStatic(DOM.class);
        PowerMockito.when(DOM.createUniqueId()).thenReturn("1");

        Foo foo = new Foo();
        assertTrue(foo.testMe());
        assertEquals(bar.getId(), "1");
    }
}

Result:
Caused by: java.lang.UnsupportedOperationException: ERROR: GWT.create() is 
only usable in client code!

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