This is a testharness.js-based test.
FAIL Set Window.onafterprint assert_equals: Initially null expected (object) null but got (undefined) undefined
FAIL Enumerate Window.onafterprint assert_true: expected true got undefined
FAIL Set HTMLBodyElement.onafterprint assert_equals: Initially null expected (object) null but got (undefined) undefined
FAIL Enumerate HTMLBodyElement.onafterprint assert_true: expected true got undefined
FAIL Reflect HTMLBodyElement.onafterprint assert_equals: Convert to function expected "function" but got "undefined"
FAIL Forward HTMLBodyElement.onafterprint to Window assert_equals: Convert to function expected "function" but got "object"
FAIL Set HTMLFrameSetElement.onafterprint assert_equals: Initially null expected (object) null but got (undefined) undefined
FAIL Enumerate HTMLFrameSetElement.onafterprint assert_true: expected true got undefined
FAIL Reflect HTMLFrameSetElement.onafterprint assert_equals: Convert to function expected "function" but got "undefined"
FAIL Forward HTMLFrameSetElement.onafterprint to Window assert_equals: Convert to function expected "function" but got "object"
FAIL Set Window.onbeforeprint assert_equals: Initially null expected (object) null but got (undefined) undefined
FAIL Enumerate Window.onbeforeprint assert_true: expected true got undefined
FAIL Set HTMLBodyElement.onbeforeprint assert_equals: Initially null expected (object) null but got (undefined) undefined
FAIL Enumerate HTMLBodyElement.onbeforeprint assert_true: expected true got undefined
FAIL Reflect HTMLBodyElement.onbeforeprint assert_equals: Convert to function expected "function" but got "undefined"
FAIL Forward HTMLBodyElement.onbeforeprint to Window assert_equals: Convert to function expected "function" but got "object"
FAIL Set HTMLFrameSetElement.onbeforeprint assert_equals: Initially null expected (object) null but got (undefined) undefined
FAIL Enumerate HTMLFrameSetElement.onbeforeprint assert_true: expected true got undefined
FAIL Reflect HTMLFrameSetElement.onbeforeprint assert_equals: Convert to function expected "function" but got "undefined"
FAIL Forward HTMLFrameSetElement.onbeforeprint to Window assert_equals: Convert to function expected "function" but got "object"
PASS Set Window.onbeforeunload 
PASS Enumerate Window.onbeforeunload 
PASS Set HTMLBodyElement.onbeforeunload 
PASS Enumerate HTMLBodyElement.onbeforeunload 
PASS Reflect HTMLBodyElement.onbeforeunload 
PASS Forward HTMLBodyElement.onbeforeunload to Window 
PASS Set HTMLFrameSetElement.onbeforeunload 
PASS Enumerate HTMLFrameSetElement.onbeforeunload 
PASS Reflect HTMLFrameSetElement.onbeforeunload 
PASS Forward HTMLFrameSetElement.onbeforeunload to Window 
PASS Set Window.onhashchange 
PASS Enumerate Window.onhashchange 
PASS Set HTMLBodyElement.onhashchange 
PASS Enumerate HTMLBodyElement.onhashchange 
PASS Reflect HTMLBodyElement.onhashchange 
PASS Forward HTMLBodyElement.onhashchange to Window 
PASS Set HTMLFrameSetElement.onhashchange 
PASS Enumerate HTMLFrameSetElement.onhashchange 
PASS Reflect HTMLFrameSetElement.onhashchange 
PASS Forward HTMLFrameSetElement.onhashchange to Window 
PASS Set Window.onmessage 
PASS Enumerate Window.onmessage 
PASS Set HTMLBodyElement.onmessage 
PASS Enumerate HTMLBodyElement.onmessage 
PASS Reflect HTMLBodyElement.onmessage 
PASS Forward HTMLBodyElement.onmessage to Window 
PASS Set HTMLFrameSetElement.onmessage 
PASS Enumerate HTMLFrameSetElement.onmessage 
PASS Reflect HTMLFrameSetElement.onmessage 
PASS Forward HTMLFrameSetElement.onmessage to Window 
PASS Set Window.onoffline 
PASS Enumerate Window.onoffline 
PASS Set HTMLBodyElement.onoffline 
PASS Enumerate HTMLBodyElement.onoffline 
PASS Reflect HTMLBodyElement.onoffline 
PASS Forward HTMLBodyElement.onoffline to Window 
PASS Set HTMLFrameSetElement.onoffline 
PASS Enumerate HTMLFrameSetElement.onoffline 
PASS Reflect HTMLFrameSetElement.onoffline 
PASS Forward HTMLFrameSetElement.onoffline to Window 
PASS Set Window.ononline 
PASS Enumerate Window.ononline 
PASS Set HTMLBodyElement.ononline 
PASS Enumerate HTMLBodyElement.ononline 
PASS Reflect HTMLBodyElement.ononline 
PASS Forward HTMLBodyElement.ononline to Window 
PASS Set HTMLFrameSetElement.ononline 
PASS Enumerate HTMLFrameSetElement.ononline 
PASS Reflect HTMLFrameSetElement.ononline 
PASS Forward HTMLFrameSetElement.ononline to Window 
PASS Set Window.onpagehide 
PASS Enumerate Window.onpagehide 
PASS Set HTMLBodyElement.onpagehide 
PASS Enumerate HTMLBodyElement.onpagehide 
PASS Reflect HTMLBodyElement.onpagehide 
PASS Forward HTMLBodyElement.onpagehide to Window 
PASS Set HTMLFrameSetElement.onpagehide 
PASS Enumerate HTMLFrameSetElement.onpagehide 
PASS Reflect HTMLFrameSetElement.onpagehide 
PASS Forward HTMLFrameSetElement.onpagehide to Window 
PASS Set Window.onpageshow 
PASS Enumerate Window.onpageshow 
PASS Set HTMLBodyElement.onpageshow 
PASS Enumerate HTMLBodyElement.onpageshow 
PASS Reflect HTMLBodyElement.onpageshow 
PASS Forward HTMLBodyElement.onpageshow to Window 
PASS Set HTMLFrameSetElement.onpageshow 
PASS Enumerate HTMLFrameSetElement.onpageshow 
PASS Reflect HTMLFrameSetElement.onpageshow 
PASS Forward HTMLFrameSetElement.onpageshow to Window 
PASS Set Window.onpopstate 
PASS Enumerate Window.onpopstate 
PASS Set HTMLBodyElement.onpopstate 
PASS Enumerate HTMLBodyElement.onpopstate 
PASS Reflect HTMLBodyElement.onpopstate 
PASS Forward HTMLBodyElement.onpopstate to Window 
PASS Set HTMLFrameSetElement.onpopstate 
PASS Enumerate HTMLFrameSetElement.onpopstate 
PASS Reflect HTMLFrameSetElement.onpopstate 
PASS Forward HTMLFrameSetElement.onpopstate to Window 
PASS Set Window.onstorage 
PASS Enumerate Window.onstorage 
PASS Set HTMLBodyElement.onstorage 
PASS Enumerate HTMLBodyElement.onstorage 
PASS Reflect HTMLBodyElement.onstorage 
PASS Forward HTMLBodyElement.onstorage to Window 
PASS Set HTMLFrameSetElement.onstorage 
PASS Enumerate HTMLFrameSetElement.onstorage 
PASS Reflect HTMLFrameSetElement.onstorage 
PASS Forward HTMLFrameSetElement.onstorage to Window 
PASS Set Window.onunload 
PASS Enumerate Window.onunload 
PASS Set HTMLBodyElement.onunload 
PASS Enumerate HTMLBodyElement.onunload 
PASS Reflect HTMLBodyElement.onunload 
PASS Forward HTMLBodyElement.onunload to Window 
PASS Set HTMLFrameSetElement.onunload 
PASS Enumerate HTMLFrameSetElement.onunload 
PASS Reflect HTMLFrameSetElement.onunload 
PASS Forward HTMLFrameSetElement.onunload to Window 
Harness: the test ran to completion.