Replace `assertEqual` with `assertTupleEqual` in unit tests for verbosity
_The documentation is not available anymore as the PR was closed or merged._ FYI I used the following regex to look for the `assertEqual` statements where the assertion was being done over a Tuple: `self.assertEqual(.*, \(.*,)(\)\))$`, hope this is useful!
As detailed in #4419 and as suggested by @mariosasko, we could replace the `assertEqual` assertions with `assertTupleEqual` when the assertion is between Tuples, in order to make the tests more verbose.