AXIOMXPath source = new AXIOMXPath("//m0:CheckPriceRequest");
source.addNamespace("m0", "http://www.apache-synapse.org/test");
validate.setSource(source);
// set dummy mediator to be called on fail
validate.addChild(testMediator);
// test validate mediator, with static enveope
validate.mediate(TestUtils.getTestContext(IN_VALID_ENVELOPE_NO_NS));
assertTrue(onFailInvoked);