protected ModelNode testUndefine( final ModelNode address, final String attribute, final boolean expectFailure) throws IOException { final CompositeOperationBuilder builder = CompositeOperationBuilder.create(); builder.addStep(Operations.createUndefineAttributeOperation(address, attribute)); // Create the read operation final ModelNode readOp = Operations.createReadAttributeOperation(address, attribute); readOp.get("include-defaults").set(false); builder.addStep(readOp); final ModelNode result = client.getControllerClient().execute(builder.build()); if (expectFailure) { assertFalse( "Undefining attribute " + attribute + " should have failed.", Operations.isSuccessfulOutcome(result)); } else { if (!Operations.isSuccessfulOutcome(result)) { Assert.fail(Operations.getFailureDescription(result).toString()); } assertFalse( "Attribute '" + attribute + "' was not undefined.", Operations.readResult(Operations.readResult(result).get("step-2")).isDefined()); } return result; }