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How to use triggerMockedCallFromInterfaceTypeInsteadOfConcreteType method of samples.powermockito.junit4.system.SystemClassUserTest class

Best Powermock code snippet using samples.powermockito.junit4.system.SystemClassUserTest.triggerMockedCallFromInterfaceTypeInsteadOfConcreteType

Source:SystemClassUserTest.java

...184        assertSame(url, actual);185    }186    187    @Test(expected = IllegalStateException.class)188    public void triggerMockedCallFromInterfaceTypeInsteadOfConcreteType() throws Exception189    {190    	StringBuilder builder = mock(StringBuilder.class);191        when(builder.length()).then(new Answer<StringBuilder>(){192            public StringBuilder answer(InvocationOnMock invocation) throws Throwable{193                throw new IllegalStateException("Can't really happen");194            }195        });196        new SystemClassUser().lengthOf(builder);197    }
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