summaryrefslogtreecommitdiffstats
path: root/Lib/tkinter/test/test_ttk/test_extensions.py
blob: 5912af4fddedf08ab88cdd5b7adb2c9367d504d1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
import sys
import unittest
import tkinter
from tkinter import ttk
from test.support import requires, run_unittest

import tkinter.test.support as support

requires('gui')

class LabeledScaleTest(unittest.TestCase):

    def setUp(self):
        support.root_deiconify()

    def tearDown(self):
        support.root_withdraw()


    def test_widget_destroy(self):
        # automatically created variable
        x = ttk.LabeledScale()
        var = x._variable._name
        x.destroy()
        self.assertRaises(tkinter.TclError, x.tk.globalgetvar, var)

        # manually created variable
        myvar = tkinter.DoubleVar()
        name = myvar._name
        x = ttk.LabeledScale(variable=myvar)
        x.destroy()
        self.assertEqual(x.tk.globalgetvar(name), myvar.get())
        del myvar
        self.assertRaises(tkinter.TclError, x.tk.globalgetvar, name)

        # checking that the tracing callback is properly removed
        myvar = tkinter.IntVar()
        # LabeledScale will start tracing myvar
        x = ttk.LabeledScale(variable=myvar)
        x.destroy()
        # Unless the tracing callback was removed, creating a new
        # LabeledScale with the same var will cause an error now. This
        # happens because the variable will be set to (possibly) a new
        # value which causes the tracing callback to be called and then
        # it tries calling instance attributes not yet defined.
        ttk.LabeledScale(variable=myvar)
        if hasattr(sys, 'last_type'):
            self.assertFalse(sys.last_type == tkinter.TclError)


    def test_initialization(self):
        # master passing
        x = ttk.LabeledScale()
        self.assertEqual(x.master, tkinter._default_root)
        x.destroy()
        master = tkinter.Frame()
        x = ttk.LabeledScale(master)
        self.assertEqual(x.master, master)
        x.destroy()

        # variable initialization/passing
        passed_expected = ((2.5, 2), ('0', 0), (0, 0), (10, 10),
            (-1, -1), (sys.maxsize + 1, sys.maxsize + 1))
        for pair in passed_expected:
            x = ttk.LabeledScale(from_=pair[0])
            self.assertEqual(x.value, pair[1])
            x.destroy()
        x = ttk.LabeledScale(from_='2.5')
        self.assertRaises(ValueError, x._variable.get)
        x.destroy()
        x = ttk.LabeledScale(from_=None)
        self.assertRaises(ValueError, x._variable.get)
        x.destroy()
        # variable should have its default value set to the from_ value
        myvar = tkinter.DoubleVar(value=20)
        x = ttk.LabeledScale(variable=myvar)
        self.assertEqual(x.value, 0)
        x.destroy()
        # check that it is really using a DoubleVar
        x = ttk.LabeledScale(variable=myvar, from_=0.5)
        self.assertEqual(x.value, 0.5)
        self.assertEqual(x._variable._name, myvar._name)
        x.destroy()

        # widget positionment
        def check_positions(scale, scale_pos, label, label_pos):
            self.assertEqual(scale.pack_info()['side'], scale_pos)
            self.assertEqual(label.place_info()['anchor'], label_pos)
        x = ttk.LabeledScale(compound='top')
        check_positions(x.scale, 'bottom', x.label, 'n')
        x.destroy()
        x = ttk.LabeledScale(compound='bottom')
        check_positions(x.scale, 'top', x.label, 's')
        x.destroy()
        x = ttk.LabeledScale(compound='unknown') # invert default positions
        check_positions(x.scale, 'top', x.label, 's')
        x.destroy()
        x = ttk.LabeledScale() # take default positions
        check_positions(x.scale, 'bottom', x.label, 'n')
        x.destroy()

        # extra, and invalid, kwargs
        self.assertRaises(tkinter.TclError, ttk.LabeledScale, a='b')


    def test_horizontal_range(self):
        lscale = ttk.LabeledScale(from_=0, to=10)
        lscale.pack()
        lscale.wait_visibility()
        lscale.update()

        linfo_1 = lscale.label.place_info()
        prev_xcoord = lscale.scale.coords()[0]
        self.assertEqual(prev_xcoord, int(linfo_1['x']))
        # change range to: from -5 to 5. This should change the x coord of
        # the scale widget, since 0 is at the middle of the new
        # range.
        lscale.scale.configure(from_=-5, to=5)
        # The following update is needed since the test doesn't use mainloop,
        # at the same time this shouldn't affect test outcome
        lscale.update()
        curr_xcoord = lscale.scale.coords()[0]
        self.assertTrue(prev_xcoord != curr_xcoord)
        # the label widget should have been repositioned too
        linfo_2 = lscale.label.place_info()
        self.assertEqual(lscale.label['text'], 0)
        self.assertEqual(curr_xcoord, int(linfo_2['x']))
        # change the range back
        lscale.scale.configure(from_=0, to=10)
        self.assertTrue(prev_xcoord != curr_xcoord)
        self.assertEqual(prev_xcoord, int(linfo_1['x']))

        lscale.destroy()


    def test_variable_change(self):
        x = ttk.LabeledScale()
        x.pack()
        x.wait_visibility()
        x.update()

        curr_xcoord = x.scale.coords()[0]
        newval = x.value + 1
        x.value = newval
        # 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.label['text'], newval)
        self.assertTrue(x.scale.coords()[0] > curr_xcoord)
        self.assertEqual(x.scale.coords()[0],
            int(x.label.place_info()['x']))

        # value outside range
        x.value = x.scale['to'] + 1 # no changes shouldn't happen
        x.update()
        self.assertEqual(x.label['text'], newval)
        self.assertEqual(x.scale.coords()[0],
            int(x.label.place_info()['x']))

        x.destroy()


    def test_resize(self):
        x = ttk.LabeledScale()
        x.pack(expand=True, fill='both')
        x.wait_visibility()
        x.update()

        width, height = x.master.winfo_width(), x.master.winfo_height()
        width_new, height_new = width * 2, height * 2

        x.value = 3
        x.update()
        x.master.wm_geometry("%dx%d" % (width_new, height_new))
        self.assertEqual(int(x.label.place_info()['x']),
            x.scale.coords()[0])

        # Reset geometry
        x.master.wm_geometry("%dx%d" % (width, height))
        x.destroy()


class OptionMenuTest(unittest.TestCase):

    def setUp(self):
        support.root_deiconify()
        self.textvar = tkinter.StringVar()

    def tearDown(self):
        del self.textvar
        support.root_withdraw()


    def test_widget_destroy(self):
        var = tkinter.StringVar()
        optmenu = ttk.OptionMenu(None, var)
        name = var._name
        optmenu.update_idletasks()
        optmenu.destroy()
        self.assertEqual(optmenu.tk.globalgetvar(name), var.get())
        del var
        self.assertRaises(tkinter.TclError, optmenu.tk.globalgetvar, name)


    def test_initialization(self):
        self.assertRaises(tkinter.TclError,
            ttk.OptionMenu, None, self.textvar, invalid='thing')

        optmenu = ttk.OptionMenu(None, self.textvar, 'b', 'a', 'b')
        self.assertEqual(optmenu._variable.get(), 'b')

        self.assertTrue(optmenu['menu'])
        self.assertTrue(optmenu['textvariable'])

        optmenu.destroy()


    def test_menu(self):
        items = ('a', 'b', 'c')
        default = 'a'
        optmenu = ttk.OptionMenu(None, self.textvar, default, *items)
        found_default = False
        for i in range(len(items)):
            value = optmenu['menu'].entrycget(i, 'value')
            self.assertEqual(value, items[i])
            if value == default:
                found_default = True
        self.assertTrue(found_default)
        optmenu.destroy()

        # default shouldn't be in menu if it is not part of values
        default = 'd'
        optmenu = ttk.OptionMenu(None, self.textvar, default, *items)
        curr = None
        i = 0
        while True:
            last, curr = curr, optmenu['menu'].entryconfigure(i, 'value')
            if last == curr:
                # no more menu entries
                break
            self.assertFalse(curr == default)
            i += 1
        self.assertEqual(i, len(items))

        # check that variable is updated correctly
        optmenu.pack()
        optmenu.wait_visibility()
        optmenu['menu'].invoke(0)
        self.assertEqual(optmenu._variable.get(), items[0])

        # changing to an invalid index shouldn't change the variable
        self.assertRaises(tkinter.TclError, optmenu['menu'].invoke, -1)
        self.assertEqual(optmenu._variable.get(), items[0])

        optmenu.destroy()

        # specifying a callback
        success = []
        def cb_test(item):
            self.assertEqual(item, items[1])
            success.append(True)
        optmenu = ttk.OptionMenu(None, self.textvar, 'a', command=cb_test,
            *items)
        optmenu['menu'].invoke(1)
        if not success:
            self.fail("Menu callback not invoked")

        optmenu.destroy()


tests_gui = (LabeledScaleTest, OptionMenuTest)

if __name__ == "__main__":
    run_unittest(*tests_gui)