Low coverage scores

[p1ho]

The coverage score is at 57% which is pretty bad.

This is because a lot of the methods are wrappers for google-api-php-client and it requires credentials and a viewId that works with the credentials and that makes it hard to test.

For example, I did not write any test for the src/Report/Assembler.php because it would require a mock instantiation of Response body object with mock data which I do not have.

Any suggestion on what I can do to up the coverage score would be greatly appreciated!