Redux Store Related Unit Test

[BeckyWu220]

This is mainly for the purpose of testing if the list data had been store properly into the redux store.

• Test the loadMore storing properly data in the redux store.
• Test the refresh removes all the data in the redux store and fetch the first page data to store in redux store properly.
• Test the redux store records the totalPageNumber correctly.
• Check if onCompleteLoadMore, onCompleteRefresh is properly called after the data is stored.