Expected value is the first parameter to assertSame() or assertEquals().
And turn to use assertCount() for some assertions aginst count of array.
Based on code search `assert(?:Same|Equals)\(.+,.+expected` and I look
through files roughly, so some assertions that don't contains 'expected'
are also fixed. In the meantime, some assertions that I am not clear
about are not touched.
Change-Id: I75798b60d29fd19b33f4fdf34ed3c788db420d01
