ZFileTest fixes and improvements

Fixed incorrect test and added some more tests to
ZFileTest.

Test: This is what this CL is all about
Change-Id: I4dbc87580fab059f810344e1f86673e0b49c04d6
2 files changed
tree: 104d2e2509e3c3274aa77173ac5c55bbf4182236
  1. src/
  2. apkzlib.iml
  3. BUILD
  4. build.gradle