def METHOD_NAME(self):
    """testing write_floats_10e"""
    func = write_floats_10e
    val = 0.0
    expected = ' 0.0'
    self.check_floats(func, val, expected)
    val = 1.0
    expected = ' 1.000E+00'
    self.check_floats(func, val, expected)
    val = -1.0
    expected = '-1.000E+00'
    self.check_floats(func, val, expected)