Current File : //usr/lib64/python2.7/lib-tk/test/test_ttk/test_extensions.py
import sys
import unittest
import Tkinter
import ttk
from test.test_support import requires, run_unittest
import 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.maxint + 1, sys.maxint + 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)
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