@Test
public void testFilterInvalidClient() throws ParseException {
// Given
Feature f1 = ff4j.getFeature(F1);
Assert.assertNotNull(f1.getFlippingStrategy());
ServerFilterStrategy cStra = (ServerFilterStrategy) f1.getFlippingStrategy();
Assert.assertNotNull(cStra.getInitParams());
Assert.assertEquals(1, cStra.getInitParams().size());
Assert.assertTrue(f1.isEnable());
// When (add invalid client name)
FlippingExecutionContext fex = new FlippingExecutionContext();
fex.addValue(ServerFilterStrategy.SERVER_HOSTNAME, FEATURE_NEW);