def METHOD_NAME(self):
    filename = os.path.join(tempfile.gettempdir(), "test_stereo.wav")
    f = wave.open(filename, "w")
    f.setnchannels(2)
    f.setsampwidth(2)
    f.setframerate(10e6)
    f.writeframes(np.array([23556, 2132, 111, 11111, 3455, 2324], dtype=np.int16))
    f.close()
    self.add_signal_to_form(filename)
    sig_frame = self.form.signal_tab_controller.signal_frames[0]
    self.assertEqual(sig_frame.signal.sample_rate, 10e6)
    self.assertEqual(sig_frame.signal.num_samples, 3)
    self.assertNotEqual(sig_frame.signal.iq_array.real.sum(), 0)
    self.assertNotEqual(sig_frame.signal.iq_array.imag.sum(), 0)