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Issue #27939: Fixed bugs in tkinter.ttk.LabeledScale and tkinter.Scale caused

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by representing the scale as float value internally in Tk.  tkinter.IntVar
now works if float value is set to underlying Tk variable.
This commit is contained in:
Serhiy Storchaka 2016-10-30 18:49:52 +02:00
parent 0438683939
commit 32c0d3ada5
4 changed files with 25 additions and 9 deletions
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17
Lib/tkinter/test/test_ttk/test_extensions.py
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@ -69,14 +69,12 @@ def test_initialization(self):
# variable initialization/passing
passed_expected = (('0', 0), (0, 0), (10, 10),
(-1, -1), (sys.maxsize + 1, sys.maxsize + 1))
(-1, -1), (sys.maxsize + 1, sys.maxsize + 1),
(2.5, 2), ('2.5', 2))
for pair in passed_expected:
x = ttk.LabeledScale(self.root, from_=pair[0])
self.assertEqual(x.value, pair[1])
x.destroy()
x = ttk.LabeledScale(self.root, from_='2.5')
self.assertRaises((ValueError, tkinter.TclError), x._variable.get)
x.destroy()
x = ttk.LabeledScale(self.root, from_=None)
self.assertRaises((ValueError, tkinter.TclError), x._variable.get)
x.destroy()
@ -155,8 +153,10 @@ def test_variable_change(self):
# The following update is needed since the test doesn't use mainloop,
# at the same time this shouldn't affect test outcome
x.update()
self.assertEqual(x.value, newval)
self.assertEqual(x.label['text'],
newval if self.wantobjects else str(newval))
self.assertEqual(float(x.scale.get()), newval)
self.assertGreater(x.scale.coords()[0], curr_xcoord)
self.assertEqual(x.scale.coords()[0],
int(x.label.place_info()['x']))
@ -168,10 +168,19 @@ def test_variable_change(self):
conv = int
x.value = conv(x.scale['to']) + 1 # no changes shouldn't happen
x.update()
self.assertEqual(x.value, newval)
self.assertEqual(conv(x.label['text']), newval)
self.assertEqual(float(x.scale.get()), newval)
self.assertEqual(x.scale.coords()[0],
int(x.label.place_info()['x']))
# non-integer value
x.value = newval = newval + 1.5
x.update()
self.assertEqual(x.value, int(newval))
self.assertEqual(conv(x.label['text']), int(newval))
self.assertEqual(float(x.scale.get()), newval)
x.destroy()