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87e7a14ee3
* Tkinter functions and constructors which need a default root window
raise now RuntimeError with descriptive message instead of obscure
AttributeError or NameError if it is not created yet or cannot
be created automatically.
* Add tests for all functions which use default root window.
* Fix import in the pynche script.
(cherry picked from commit 3d569fd6dc)
309 lines
11 KiB
Python
309 lines
11 KiB
Python
import sys
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import unittest
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import tkinter
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from tkinter import ttk
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from test.support import requires, run_unittest
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from tkinter.test.support import AbstractTkTest, AbstractDefaultRootTest
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requires('gui')
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class LabeledScaleTest(AbstractTkTest, unittest.TestCase):
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def tearDown(self):
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self.root.update_idletasks()
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super().tearDown()
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def test_widget_destroy(self):
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# automatically created variable
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x = ttk.LabeledScale(self.root)
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var = x._variable._name
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x.destroy()
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self.assertRaises(tkinter.TclError, x.tk.globalgetvar, var)
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# manually created variable
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myvar = tkinter.DoubleVar(self.root)
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name = myvar._name
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x = ttk.LabeledScale(self.root, variable=myvar)
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x.destroy()
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if self.wantobjects:
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self.assertEqual(x.tk.globalgetvar(name), myvar.get())
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else:
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self.assertEqual(float(x.tk.globalgetvar(name)), myvar.get())
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del myvar
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self.assertRaises(tkinter.TclError, x.tk.globalgetvar, name)
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# checking that the tracing callback is properly removed
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myvar = tkinter.IntVar(self.root)
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# LabeledScale will start tracing myvar
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x = ttk.LabeledScale(self.root, variable=myvar)
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x.destroy()
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# Unless the tracing callback was removed, creating a new
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# LabeledScale with the same var will cause an error now. This
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# happens because the variable will be set to (possibly) a new
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# value which causes the tracing callback to be called and then
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# it tries calling instance attributes not yet defined.
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ttk.LabeledScale(self.root, variable=myvar)
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if hasattr(sys, 'last_type'):
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self.assertNotEqual(sys.last_type, tkinter.TclError)
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def test_initialization(self):
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# master passing
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master = tkinter.Frame(self.root)
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x = ttk.LabeledScale(master)
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self.assertEqual(x.master, master)
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x.destroy()
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# variable initialization/passing
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passed_expected = (('0', 0), (0, 0), (10, 10),
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(-1, -1), (sys.maxsize + 1, sys.maxsize + 1),
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(2.5, 2), ('2.5', 2))
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for pair in passed_expected:
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x = ttk.LabeledScale(self.root, from_=pair[0])
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self.assertEqual(x.value, pair[1])
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x.destroy()
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x = ttk.LabeledScale(self.root, from_=None)
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self.assertRaises((ValueError, tkinter.TclError), x._variable.get)
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x.destroy()
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# variable should have its default value set to the from_ value
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myvar = tkinter.DoubleVar(self.root, value=20)
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x = ttk.LabeledScale(self.root, variable=myvar)
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self.assertEqual(x.value, 0)
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x.destroy()
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# check that it is really using a DoubleVar
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x = ttk.LabeledScale(self.root, variable=myvar, from_=0.5)
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self.assertEqual(x.value, 0.5)
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self.assertEqual(x._variable._name, myvar._name)
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x.destroy()
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# widget positionment
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def check_positions(scale, scale_pos, label, label_pos):
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self.assertEqual(scale.pack_info()['side'], scale_pos)
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self.assertEqual(label.place_info()['anchor'], label_pos)
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x = ttk.LabeledScale(self.root, compound='top')
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check_positions(x.scale, 'bottom', x.label, 'n')
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x.destroy()
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x = ttk.LabeledScale(self.root, compound='bottom')
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check_positions(x.scale, 'top', x.label, 's')
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x.destroy()
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# invert default positions
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x = ttk.LabeledScale(self.root, compound='unknown')
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check_positions(x.scale, 'top', x.label, 's')
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x.destroy()
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x = ttk.LabeledScale(self.root) # take default positions
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check_positions(x.scale, 'bottom', x.label, 'n')
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x.destroy()
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# extra, and invalid, kwargs
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self.assertRaises(tkinter.TclError, ttk.LabeledScale, master, a='b')
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def test_horizontal_range(self):
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lscale = ttk.LabeledScale(self.root, from_=0, to=10)
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lscale.pack()
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lscale.update()
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linfo_1 = lscale.label.place_info()
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prev_xcoord = lscale.scale.coords()[0]
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self.assertEqual(prev_xcoord, int(linfo_1['x']))
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# change range to: from -5 to 5. This should change the x coord of
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# the scale widget, since 0 is at the middle of the new
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# range.
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lscale.scale.configure(from_=-5, to=5)
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# The following update is needed since the test doesn't use mainloop,
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# at the same time this shouldn't affect test outcome
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lscale.update()
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curr_xcoord = lscale.scale.coords()[0]
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self.assertNotEqual(prev_xcoord, curr_xcoord)
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# the label widget should have been repositioned too
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linfo_2 = lscale.label.place_info()
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self.assertEqual(lscale.label['text'], 0 if self.wantobjects else '0')
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self.assertEqual(curr_xcoord, int(linfo_2['x']))
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# change the range back
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lscale.scale.configure(from_=0, to=10)
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self.assertNotEqual(prev_xcoord, curr_xcoord)
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self.assertEqual(prev_xcoord, int(linfo_1['x']))
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lscale.destroy()
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def test_variable_change(self):
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x = ttk.LabeledScale(self.root)
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x.pack()
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x.update()
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curr_xcoord = x.scale.coords()[0]
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newval = x.value + 1
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x.value = newval
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# The following update is needed since the test doesn't use mainloop,
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# at the same time this shouldn't affect test outcome
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x.update()
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self.assertEqual(x.value, newval)
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self.assertEqual(x.label['text'],
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newval if self.wantobjects else str(newval))
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self.assertEqual(float(x.scale.get()), newval)
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self.assertGreater(x.scale.coords()[0], curr_xcoord)
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self.assertEqual(x.scale.coords()[0],
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int(x.label.place_info()['x']))
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# value outside range
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if self.wantobjects:
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conv = lambda x: x
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else:
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conv = int
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x.value = conv(x.scale['to']) + 1 # no changes shouldn't happen
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x.update()
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self.assertEqual(x.value, newval)
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self.assertEqual(conv(x.label['text']), newval)
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self.assertEqual(float(x.scale.get()), newval)
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self.assertEqual(x.scale.coords()[0],
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int(x.label.place_info()['x']))
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# non-integer value
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x.value = newval = newval + 1.5
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x.update()
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self.assertEqual(x.value, int(newval))
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self.assertEqual(conv(x.label['text']), int(newval))
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self.assertEqual(float(x.scale.get()), newval)
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x.destroy()
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def test_resize(self):
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x = ttk.LabeledScale(self.root)
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x.pack(expand=True, fill='both')
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x.update()
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width, height = x.master.winfo_width(), x.master.winfo_height()
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width_new, height_new = width * 2, height * 2
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x.value = 3
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x.update()
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x.master.wm_geometry("%dx%d" % (width_new, height_new))
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self.assertEqual(int(x.label.place_info()['x']),
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x.scale.coords()[0])
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# Reset geometry
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x.master.wm_geometry("%dx%d" % (width, height))
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x.destroy()
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class OptionMenuTest(AbstractTkTest, unittest.TestCase):
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def setUp(self):
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super().setUp()
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self.textvar = tkinter.StringVar(self.root)
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def tearDown(self):
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del self.textvar
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super().tearDown()
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def test_widget_destroy(self):
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var = tkinter.StringVar(self.root)
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optmenu = ttk.OptionMenu(self.root, var)
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name = var._name
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optmenu.update_idletasks()
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optmenu.destroy()
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self.assertEqual(optmenu.tk.globalgetvar(name), var.get())
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del var
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self.assertRaises(tkinter.TclError, optmenu.tk.globalgetvar, name)
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def test_initialization(self):
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self.assertRaises(tkinter.TclError,
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ttk.OptionMenu, self.root, self.textvar, invalid='thing')
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optmenu = ttk.OptionMenu(self.root, self.textvar, 'b', 'a', 'b')
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self.assertEqual(optmenu._variable.get(), 'b')
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self.assertTrue(optmenu['menu'])
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self.assertTrue(optmenu['textvariable'])
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optmenu.destroy()
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def test_menu(self):
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items = ('a', 'b', 'c')
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default = 'a'
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optmenu = ttk.OptionMenu(self.root, self.textvar, default, *items)
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found_default = False
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for i in range(len(items)):
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value = optmenu['menu'].entrycget(i, 'value')
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self.assertEqual(value, items[i])
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if value == default:
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found_default = True
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self.assertTrue(found_default)
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optmenu.destroy()
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# default shouldn't be in menu if it is not part of values
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default = 'd'
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optmenu = ttk.OptionMenu(self.root, self.textvar, default, *items)
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curr = None
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i = 0
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while True:
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last, curr = curr, optmenu['menu'].entryconfigure(i, 'value')
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if last == curr:
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# no more menu entries
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break
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self.assertNotEqual(curr, default)
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i += 1
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self.assertEqual(i, len(items))
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# check that variable is updated correctly
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optmenu.pack()
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optmenu['menu'].invoke(0)
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self.assertEqual(optmenu._variable.get(), items[0])
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# changing to an invalid index shouldn't change the variable
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self.assertRaises(tkinter.TclError, optmenu['menu'].invoke, -1)
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self.assertEqual(optmenu._variable.get(), items[0])
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optmenu.destroy()
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# specifying a callback
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success = []
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def cb_test(item):
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self.assertEqual(item, items[1])
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success.append(True)
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optmenu = ttk.OptionMenu(self.root, self.textvar, 'a', command=cb_test,
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*items)
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optmenu['menu'].invoke(1)
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if not success:
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self.fail("Menu callback not invoked")
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optmenu.destroy()
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def test_unique_radiobuttons(self):
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# check that radiobuttons are unique across instances (bpo25684)
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items = ('a', 'b', 'c')
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default = 'a'
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optmenu = ttk.OptionMenu(self.root, self.textvar, default, *items)
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textvar2 = tkinter.StringVar(self.root)
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optmenu2 = ttk.OptionMenu(self.root, textvar2, default, *items)
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optmenu.pack()
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optmenu2.pack()
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optmenu['menu'].invoke(1)
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optmenu2['menu'].invoke(2)
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optmenu_stringvar_name = optmenu['menu'].entrycget(0, 'variable')
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optmenu2_stringvar_name = optmenu2['menu'].entrycget(0, 'variable')
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self.assertNotEqual(optmenu_stringvar_name,
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optmenu2_stringvar_name)
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self.assertEqual(self.root.tk.globalgetvar(optmenu_stringvar_name),
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items[1])
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self.assertEqual(self.root.tk.globalgetvar(optmenu2_stringvar_name),
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items[2])
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optmenu.destroy()
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optmenu2.destroy()
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class DefaultRootTest(AbstractDefaultRootTest, unittest.TestCase):
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def test_labeledscale(self):
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self._test_widget(ttk.LabeledScale)
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tests_gui = (LabeledScaleTest, OptionMenuTest, DefaultRootTest)
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if __name__ == "__main__":
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run_unittest(*tests_gui)
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