Initial history length is 1
NavigateEvent for Push navigation-navigate-iframe.html#1 (Same document? true) with info: 42
currententrychange for change to navigation-navigate-iframe.html#1 of type Push from navigation-navigate-iframe.html
Committed to navigation to navigation-navigate-iframe.html#1
Finished navigation to navigation-navigate-iframe.html#1
History length after navigate is 2
DONE