{"tests": [ {"description": "valid html xmlns attribute", "input": "", "fail-if": "invalid-root-namespace"}, {"description": "invalid html xmlns attribute due to leading space", "input": "", "fail-unless": "invalid-root-namespace"}, {"description": "invalid html xmlns attribute due to trailing space", "input": "", "fail-unless": "invalid-root-namespace"}, {"description": "invalid html xmlns attribute due to uppercase", "input": "", "fail-unless": "invalid-root-namespace"}, {"description": "invalid xmlns attribute on non-html element", "input": "", "fail-unless": "unknown-attribute"} ]}