CONSOLE ERROR: Uncaught SecurityError: Failed to read a named property 'history' from 'Window': Sandbox access violation: Blocked a frame at "null" from accessing a frame at "". The frame requesting access is sandboxed and lacks the "allow-same-origin" flag.
This test verifies that a sandboxed IFrame cannot access the history object of the top-level frame. It passes if an uncaught exception is present, noting that the inner frame cannot access the outer.