def METHOD_NAME(self):
    r"""Test __init__ file handling -- various non-existent input files."""
    bad_files = [
        "/dev/null",
        "/tmp/this/file/is/not/there.json",
        "/tmp/this_file_is_not_there.json",
    ]
    for bad_file in bad_files:
        with self.assertRaises(AssertionError):
            _ = self.fixture(bad_file)