This is a testharness.js-based test.
Harness Error. harness_status.status = 1 , harness_status.message = 1 duplicate test name: "Attribute should exist and return value"
PASS Attribute should exist and return value 
PASS Attribute should exist and return value 
PASS Constant should exist on interface and return value 
PASS Constant should exist on interface and not be modifiable 
PASS Attribute should exist on partial interface and return value 
PASS Static attribute should exist on partial interface and return value 
PASS Constant should exist on partial interface and return value 
PASS Method should exist on partial interface and return value 
PASS Static method should exist on partial interface and return value 
PASS Attribute should exist on interface and return value 
PASS Static attribute should exist on interface and return value 
PASS Attribute should exist and not throw exception in worker 
PASS Attribute should exist and return value in worker 
PASS Constant should exist and return value in worker 
PASS Constant should exist and not be modifiable in worker 
Harness: the test ran to completion.