def test_thresholds(self):
w = ColorGradientSelection()
w.setThresholds(0.2, 0.8)
self.assertEqual(w.thresholds(), (0.2, 0.8))
w.setThresholds(0.5, 0.5)
self.assertEqual(w.thresholds(), (0.5, 0.5))
w.setThresholds(0.5, np.nextafter(0.5, 0))
self.assertEqual(w.thresholds(), (0.5, 0.5))
w.setThresholds(-1, 2)
self.assertEqual(w.thresholds(), (0., 1.))
w.setThresholds(0.1, 0.0)
self.assertEqual(w.thresholds(), (0.1, 0.1))
w.setThresholdLow(0.2)
self.assertEqual(w.thresholds(), (0.2, 0.2))
self.assertEqual(w.thresholdLow(), 0.2)
w.setThresholdHigh(0.1)
self.assertEqual(w.thresholdHigh(), 0.1)
self.assertEqual(w.thresholds(), (0.1, 0.1))
def test_slider_move(self):
w = ColorGradientSelection()
w.adjustSize()
w.setThresholds(0.5, 0.5)
changed = QSignalSpy(w.thresholdsChanged)
sl, sh = w.slider_low, w.slider_high
sl.triggerAction(sl.SliderToMinimum)
self.assertEqual(len(changed), 1)
low, high = changed[-1]
self.assertLessEqual(low, high)
self.assertEqual(low, 0.0)
sl.triggerAction(sl.SliderToMaximum)
self.assertEqual(len(changed), 2)
low, high = changed[-1]
self.assertLessEqual(low, high)
self.assertEqual(low, 1.0)
sh.triggerAction(sl.SliderToMinimum)
self.assertEqual(len(changed), 3)
low, high = changed[-1]
self.assertLessEqual(low, high)
self.assertEqual(high, 0.0)