def METHOD_NAME(self):
    """Test the calibration functions."""
    radiance = np.array([[1.0, 2.0, 5.0], [7.0, 10.0, 20.0]])
    cw = 13.0
    a = 3.0
    b = 100.0
    bt = self.reader._calibrate_bt(radiance, cw, a, b)
    expected_bt = np.array([[675.04993213, 753.10301462, 894.93149648],
                            [963.20401882, 1048.95086402, 1270.95546218]])
    self.assertTrue(np.allclose(bt, expected_bt))
    angle_factor = 0.4
    isi = 2.0
    refl = self.reader._calibrate_refl(radiance, angle_factor, isi)
    expected_refl = np.array([[62.8318531, 125.6637061, 314.1592654],
                              [439.8229715, 628.3185307, 1256.637061]])
    self.assertTrue(np.allclose(refl, expected_refl))