def test_constructor(self):
w = ColorGradientSelection(thresholds=(0.1, 0.9))
self.assertEqual(w.thresholds(), (0.1, 0.9))
w = ColorGradientSelection(thresholds=(-0.1, 1.1))
self.assertEqual(w.thresholds(), (0.0, 1.0))
w = ColorGradientSelection(thresholds=(1.0, 0.0))
self.assertEqual(w.thresholds(), (1.0, 1.0))
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))