Method test_filelike_bad_read

numpy/lib/tests/test_loadtxt.py:863–877

(self)

                BadFileLike(), dtype=np.dtype("i"), filelike=True)

    def test_filelike_bad_read(self):
        # Can only be reached if loadtxt opens the file, so it is hard to do
        # via the public interface (although maybe not impossible considering
        # the current "DataClass" backing).

        class BadFileLike:
            counter = 0

            def read(self, size):
                return 1234  # not a string!

        with pytest.raises(TypeError,
                    match="non-string returned while reading data"):
            np.core._multiarray_umath._load_from_filelike(
                BadFileLike(), dtype=np.dtype("i"), filelike=True)

    def test_not_an_iter(self):
        with pytest.raises(TypeError,