Backport PR matplotlib#21581: Fix RangeSlider.reset

QuLogic · meeseeksmachine · commit ac9327581b0f · 2021-11-10T21:33:20.000Z
diff --git a/lib/matplotlib/tests/test_widgets.py b/lib/matplotlib/tests/test_widgets.py
@@ -298,6 +298,14 @@ def test_slider_horizontal_vertical():
     assert_allclose(box.bounds, [0, 0, 1, 10/24])
 
 
+def test_slider_reset():
+    fig, ax = plt.subplots()
+    slider = widgets.Slider(ax=ax, label='', valmin=0, valmax=1, valinit=.5)
+    slider.set_val(0.75)
+    slider.reset()
+    assert slider.val == 0.5
+
+
 @pytest.mark.parametrize("orientation", ["horizontal", "vertical"])
 def test_range_slider(orientation):
     if orientation == "vertical":
@@ -328,6 +336,9 @@ def test_range_slider(orientation):
     slider.set_val((-1, 10))
     assert_allclose(slider.val, (0, 1))
 
+    slider.reset()
+    assert_allclose(slider.val, [0.1, 0.34])
+
 
 def check_polygon_selector(event_sequence, expected_result, selections_count):
     """
diff --git a/lib/matplotlib/widgets.py b/lib/matplotlib/widgets.py
@@ -303,7 +303,7 @@ def disconnect(self, cid):
 
     def reset(self):
         """Reset the slider to the initial value."""
-        if self.val != self.valinit:
+        if np.any(self.val != self.valinit):
             self.set_val(self.valinit)
 
 
