WPS344 ignores //= 0

[sobolevn]

Bug report

What's wrong

This code is not marked as invalid:

x //= 0

How is that should be

It should raise WPS344. See here: https://github.com/wemake-services/wemake-python-styleguide/blob/master/wemake_python_styleguide/visitors/ast/operators.py#L100

We also need to check for ast.FloorDiv as well.
And edit a test here: https://github.com/wemake-services/wemake-python-styleguide/blob/master/tests/test_visitors/test_ast/test_operators/test_useless_math.py#L46

System information

flake8 information

Contents of flake8 --bug-report:

pip information

Contents of pip freeze: