Method test_upgrade

numpy/lib/tests/test__iotools.py:154–189

Tests the upgrade method.

(self)

        assert_equal(converter.default, -99999)

    def test_upgrade(self):
        "Tests the upgrade method."

        converter = StringConverter()
        assert_equal(converter._status, 0)

        # test int
        assert_equal(converter.upgrade('0'), 0)
        assert_equal(converter._status, 1)

        # On systems where long defaults to 32-bit, the statuses will be
        # offset by one, so we check for this here.
        import numpy._core.numeric as nx
        status_offset = int(nx.dtype(nx.int_).itemsize < nx.dtype(nx.int64).itemsize)

        # test int > 2**32
        assert_equal(converter.upgrade('17179869184'), 17179869184)
        assert_equal(converter._status, 1 + status_offset)

        # test float
        assert_allclose(converter.upgrade('0.'), 0.0)
        assert_equal(converter._status, 2 + status_offset)

        # test complex
        assert_equal(converter.upgrade('0j'), complex('0j'))
        assert_equal(converter._status, 3 + status_offset)

        # test str
        # note that the longdouble type has been skipped, so the
        # _status increases by 2. Everything should succeed with
        # unicode conversion (8).
        for s in ['a', b'a']:
            res = converter.upgrade(s)
            assert_(type(res) is str)
            assert_equal(res, 'a')
            assert_equal(converter._status, 8 + status_offset)

    def test_missing(self):
        "Tests the use of missing values."