This is a test to make sure SessionStorage mutations fire StorageEvents that are caught by the event listener corresponding to body.onstorage. The event listener is setup in the body element's markup.
Storage event fired:
Key - FOO
New Value - BAR
Old Value - null

Storage event fired:
Key - FU
New Value - BAR
Old Value - null

Storage event fired:
Key - FOO
New Value - null
Old Value - BAR

Storage event fired:
Key - FU
New Value - null
Old Value - BAR


