This tests that modifying location.port works as it should

PASS: internalFrame.contentWindow.location.port == "" should be true and is.
PASS: internalFrame.contentWindow.location.port == "" should be true and is.
PASS: internalFrame.contentWindow.location.port == "" should be true and is.
PASS: internalFrame.contentWindow.location.port == "" should be true and is.
PASS: internalFrame.contentWindow.location.host should be and is.