Function coding_checker

Lib/test/test_codecs.py:33–36

(self, coder)

        return codecs.open(*args, **kwargs)

def coding_checker(self, coder):
    def check(input, expect):
        self.assertEqual(coder(input), (expect, len(input)))
    return check

# On small versions of Windows like Windows IoT or Windows Nano Server not all codepages are present
def is_code_page_present(cp):