def test_mul_float_multiple_next_higher_resolution():
    """Test more than one iteration through _next_higher_resolution is required."""
    assert 1e-6 * Second() == Microsecond()
    assert 1e-6 / 60 * Minute() == Microsecond()
Test more than one iteration through _next_higher_resolution is required.
xarray/tests/test_cftime_offsets.py