TST: Replace `assert_almost_equal` checks with `assert_allclose` in test suite

[Kai-Striega]

assert_almost_equal is no longer the recommended way of checking for two numbers that are close to one another due to the inconsistencies in how floating point numbers are handled. It is recommended to use one of assert_allclose, assert_array_almost_equal_nulp or assert_array_max_ulp instead of this function for more consistent floating point comparisons.

This issue is to replace assert_almost_equal with the appropriate check

[ArCh12312]

Hey!
I would like to take up this issue.
Could you please assign it to me?

[Kai-Striega]

Hello @ArCh12312 thanks for being involved in the project.

I usually don't assign issues but commenting here should be enough to show that you are working on it.

I see that you have already submitted a PR. I'll do my best to review it today/tomorrow.

[Kai-Striega]

Closed via #97, closing this issue.