def METHOD_NAME(self):
    """Create a test HDF4 file."""
    from pyhdf.SD import SD, SDC
    h = SD('test.hdf', SDC.WRITE | SDC.CREATE | SDC.TRUNC)
    data = np.arange(10. * 100, dtype=np.float32).reshape((10, 100))
    v1 = h.create('ds1_f', SDC.FLOAT32, (10, 100))
    v1[:] = data
    v2 = h.create('ds1_i', SDC.INT16, (10, 100))
    v2[:] = data.astype(np.int16)
    # Add attributes
    h.test_attr_str = 'test_string'
    h.test_attr_int = 0
    h.test_attr_float = 1.2
    # h.test_attr_str_arr = np.array(b"test_string2")
    for d in [v1, v2]:
        d.test_attr_str = 'test_string'
        d.test_attr_int = 0
        d.test_attr_float = 1.2
    h.end()