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Serhiy Storchaka
58fd9ec3cf
Exercise the native dialogs (Open, SaveAs and Directory) through the _test_callback seam without opening them, and test the pure-Python FileDialog selection, filter and ok/cancel logic without entering its modal loop. Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
74 lines
2.6 KiB
Python
74 lines
2.6 KiB
Python
import os
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import unittest
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from tkinter import filedialog
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from tkinter.commondialog import Dialog
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from test.support import requires, swap_attr
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from test.test_tkinter.support import setUpModule # noqa: F401
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from test.test_tkinter.support import AbstractTkTest
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requires('gui')
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class NativeDialogTest(AbstractTkTest, unittest.TestCase):
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# Open, SaveAs and Directory wrap modal native dialogs. The _test_callback
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# seam is called by show() just before the dialog would open; replacing it
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# with a function that raises exercises show() without blocking on the
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# dialog.
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def check(self, dialog_class, command):
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self.assertEqual(dialog_class.command, command)
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master = None
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def test_callback(dialog, parent):
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nonlocal master
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master = parent
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raise ZeroDivisionError
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with swap_attr(Dialog, '_test_callback', test_callback):
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d = dialog_class(self.root, title='Test')
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self.assertRaises(ZeroDivisionError, d.show)
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self.assertIs(master, self.root)
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def test_open(self):
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self.check(filedialog.Open, 'tk_getOpenFile')
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def test_saveas(self):
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self.check(filedialog.SaveAs, 'tk_getSaveFile')
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def test_directory(self):
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self.check(filedialog.Directory, 'tk_chooseDirectory')
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class FileDialogTest(AbstractTkTest, unittest.TestCase):
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# The pure-Python FileDialog runs its own modal loop in go(); its logic is
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# exercised here without entering the loop.
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def test_selection(self):
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d = filedialog.FileDialog(self.root)
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d.directory = os.path.abspath(os.sep)
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d.set_selection('spam.txt')
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self.assertEqual(os.path.basename(d.get_selection()), 'spam.txt')
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def test_filter(self):
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d = filedialog.FileDialog(self.root)
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d.set_filter(os.getcwd(), '*.py')
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self.assertEqual(d.get_filter(), (os.getcwd(), '*.py'))
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def test_ok_cancel(self):
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d = filedialog.FileDialog(self.root)
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d.directory = os.getcwd()
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d.set_selection('spam.txt')
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d.ok_command() # Accepts the current selection.
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self.assertEqual(os.path.basename(d.how), 'spam.txt')
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d.cancel_command() # Returns no selection.
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self.assertIsNone(d.how)
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def test_subclasses(self):
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for cls in filedialog.LoadFileDialog, filedialog.SaveFileDialog:
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with self.subTest(cls=cls.__name__):
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d = cls(self.root)
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self.assertIsInstance(d, filedialog.FileDialog)
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self.assertEqual(d.top.title(), cls.title)
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if __name__ == "__main__":
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unittest.main()
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