Test storage class
should store item in storage
should handle store without prefix
should delete item from storage
should return null if item is not know
should parse JSON objects
should not return expired objects
should return not expired objects
can set number variable
can create LocalStorage and SessionStorage instance
Test CookieAdapter
communicate with Cookie service
set expire date based on value
appends options to set and remove methods
Test FileAdapter
create db file
store strings
store objects
remove items
do not remove existing db file