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155 lines
4.6 KiB
Python
155 lines
4.6 KiB
Python
'''Test idlelib.textview.
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Since all methods and functions create (or destroy) a TextViewer, which
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is a widget containing multiple widgets, all tests must be gui tests.
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Using mock Text would not change this. Other mocks are used to retrieve
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information about calls.
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Coverage: 100%.
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'''
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from idlelib import textview as tv
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from test.support import requires
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requires('gui')
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import unittest
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import os
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from tkinter import Tk, Button
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from idlelib.idle_test.mock_idle import Func
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from idlelib.idle_test.mock_tk import Mbox_func
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def setUpModule():
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global root
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root = Tk()
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root.withdraw()
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def tearDownModule():
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global root
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root.update_idletasks()
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root.destroy() # Pyflakes falsely sees root as undefined.
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del root
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# If we call TextViewer or wrapper functions with defaults
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# modal=True, _utest=False, test hangs on call to wait_window.
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# Have also gotten tk error 'can't invoke "event" command'.
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class TV(tv.TextViewer): # Used in TextViewTest.
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transient = Func()
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grab_set = Func()
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wait_window = Func()
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# Call wrapper class with mock wait_window.
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class TextViewTest(unittest.TestCase):
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def setUp(self):
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TV.transient.__init__()
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TV.grab_set.__init__()
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TV.wait_window.__init__()
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def test_init_modal(self):
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view = TV(root, 'Title', 'test text')
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self.assertTrue(TV.transient.called)
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self.assertTrue(TV.grab_set.called)
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self.assertTrue(TV.wait_window.called)
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view.ok()
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def test_init_nonmodal(self):
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view = TV(root, 'Title', 'test text', modal=False)
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self.assertFalse(TV.transient.called)
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self.assertFalse(TV.grab_set.called)
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self.assertFalse(TV.wait_window.called)
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view.ok()
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def test_ok(self):
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view = TV(root, 'Title', 'test text', modal=False)
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view.destroy = Func()
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view.ok()
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self.assertTrue(view.destroy.called)
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del view.destroy # Unmask real function.
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view.destroy()
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# Call TextViewer with modal=False.
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class ViewFunctionTest(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.orig_error = tv.showerror
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tv.showerror = Mbox_func()
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@classmethod
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def tearDownClass(cls):
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tv.showerror = cls.orig_error
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del cls.orig_error
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def test_view_text(self):
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view = tv.view_text(root, 'Title', 'test text', modal=False)
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self.assertIsInstance(view, tv.TextViewer)
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view.ok()
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def test_view_file(self):
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view = tv.view_file(root, 'Title', __file__, modal=False)
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self.assertIsInstance(view, tv.TextViewer)
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self.assertIn('Test', view.text.get('1.0', '1.end'))
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view.ok()
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def test_bad_file(self):
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# Mock showerror will be used; view_file will return None.
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view = tv.view_file(root, 'Title', 'abc.xyz', modal=False)
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self.assertIsNone(view)
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self.assertEqual(tv.showerror.title, 'File Load Error')
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def test_bad_encoding(self):
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p = os.path
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fn = p.abspath(p.join(p.dirname(__file__), '..', 'CREDITS.txt'))
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tv.showerror.title = None
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view = tv.view_file(root, 'Title', fn, 'ascii', modal=False)
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self.assertIsNone(view)
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self.assertEqual(tv.showerror.title, 'Unicode Decode Error')
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# Call TextViewer with _utest=True.
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class ButtonClickTest(unittest.TestCase):
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def setUp(self):
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self.view = None
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self.called = False
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def tearDown(self):
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if self.view:
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self.view.destroy()
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def test_view_text_bind_with_button(self):
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def _command():
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self.called = True
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self.view = tv.view_text(root, 'TITLE_TEXT', 'COMMAND', _utest=True)
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button = Button(root, text='BUTTON', command=_command)
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button.invoke()
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self.addCleanup(button.destroy)
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self.assertEqual(self.called, True)
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self.assertEqual(self.view.title(), 'TITLE_TEXT')
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self.assertEqual(self.view.text.get('1.0', '1.end'), 'COMMAND')
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def test_view_file_bind_with_button(self):
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def _command():
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self.called = True
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self.view = tv.view_file(root, 'TITLE_FILE', __file__, _utest=True)
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button = Button(root, text='BUTTON', command=_command)
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button.invoke()
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self.addCleanup(button.destroy)
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self.assertEqual(self.called, True)
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self.assertEqual(self.view.title(), 'TITLE_FILE')
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with open(__file__) as f:
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self.assertEqual(self.view.text.get('1.0', '1.end'),
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f.readline().strip())
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f.readline()
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self.assertEqual(self.view.text.get('3.0', '3.end'),
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f.readline().strip())
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if __name__ == '__main__':
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unittest.main(verbosity=2)
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