Add unit tests#40

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FelixWang1994 wants to merge 4 commits intoawwad:developfrom

FelixWang1994:develop

Commits on Dec 16, 2016

Merge pull request #1 from awwad/develop
FelixWang1994
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Commits on Jan 4, 2017

Merge pull request #2 from awwad/develop
FelixWang1994
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Commits on Jan 17, 2017

Merge pull request #3 from awwad/develop
FelixWang1994
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Commits on Mar 10, 2017

Add testing for secondary and directory in ref impl
FelixWang1994
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