234 lines
7.2 KiB
Python
234 lines
7.2 KiB
Python
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"""Test textview, coverage 100%.
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Since all methods and functions create (or destroy) a ViewWindow, which
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is a widget containing a widget, etcetera, 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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"""
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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 os
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import unittest
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from tkinter import Tk, TclError, CHAR, NONE, WORD
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from tkinter.ttk import 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()
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del root
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# If we call ViewWindow 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 VW(tv.ViewWindow): # Used in ViewWindowTest.
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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 VW with mock wait_window.
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class ViewWindowTest(unittest.TestCase):
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def setUp(self):
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VW.transient.__init__()
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VW.grab_set.__init__()
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VW.wait_window.__init__()
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def test_init_modal(self):
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view = VW(root, 'Title', 'test text')
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self.assertTrue(VW.transient.called)
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self.assertTrue(VW.grab_set.called)
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self.assertTrue(VW.wait_window.called)
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view.ok()
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def test_init_nonmodal(self):
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view = VW(root, 'Title', 'test text', modal=False)
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self.assertFalse(VW.transient.called)
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self.assertFalse(VW.grab_set.called)
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self.assertFalse(VW.wait_window.called)
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view.ok()
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def test_ok(self):
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view = VW(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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class AutoHideScrollbarTest(unittest.TestCase):
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# Method set is tested in ScrollableTextFrameTest
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def test_forbidden_geometry(self):
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scroll = tv.AutoHideScrollbar(root)
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self.assertRaises(TclError, scroll.pack)
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self.assertRaises(TclError, scroll.place)
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class ScrollableTextFrameTest(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.root = root = Tk()
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root.withdraw()
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@classmethod
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def tearDownClass(cls):
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cls.root.update_idletasks()
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cls.root.destroy()
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del cls.root
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def make_frame(self, wrap=NONE, **kwargs):
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frame = tv.ScrollableTextFrame(self.root, wrap=wrap, **kwargs)
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def cleanup_frame():
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frame.update_idletasks()
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frame.destroy()
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self.addCleanup(cleanup_frame)
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return frame
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def test_line1(self):
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frame = self.make_frame()
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frame.text.insert('1.0', 'test text')
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self.assertEqual(frame.text.get('1.0', '1.end'), 'test text')
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def test_horiz_scrollbar(self):
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# The horizontal scrollbar should be shown/hidden according to
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# the 'wrap' setting: It should only be shown when 'wrap' is
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# set to NONE.
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# wrap = NONE -> with horizontal scrolling
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frame = self.make_frame(wrap=NONE)
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self.assertEqual(frame.text.cget('wrap'), NONE)
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self.assertIsNotNone(frame.xscroll)
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# wrap != NONE -> no horizontal scrolling
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for wrap in [CHAR, WORD]:
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with self.subTest(wrap=wrap):
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frame = self.make_frame(wrap=wrap)
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self.assertEqual(frame.text.cget('wrap'), wrap)
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self.assertIsNone(frame.xscroll)
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class ViewFrameTest(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.root = root = Tk()
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root.withdraw()
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cls.frame = tv.ViewFrame(root, 'test text')
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@classmethod
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def tearDownClass(cls):
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del cls.frame
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cls.root.update_idletasks()
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cls.root.destroy()
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del cls.root
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def test_line1(self):
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get = self.frame.text.get
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self.assertEqual(get('1.0', '1.end'), 'test text')
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# Call ViewWindow 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.ViewWindow)
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self.assertIsInstance(view.viewframe, tv.ViewFrame)
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view.viewframe.ok()
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def test_view_file(self):
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view = tv.view_file(root, 'Title', __file__, 'ascii', modal=False)
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self.assertIsInstance(view, tv.ViewWindow)
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self.assertIsInstance(view.viewframe, tv.ViewFrame)
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get = view.viewframe.textframe.text.get
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self.assertIn('Test', 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', 'ascii', 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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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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def test_nowrap(self):
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view = tv.view_text(root, 'Title', 'test', modal=False, wrap='none')
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text_widget = view.viewframe.textframe.text
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self.assertEqual(text_widget.cget('wrap'), 'none')
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# Call ViewWindow 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.viewframe.textframe.text.get('1.0', '1.end'),
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'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__,
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encoding='ascii', _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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get = self.view.viewframe.textframe.text.get
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with open(__file__) as f:
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self.assertEqual(get('1.0', '1.end'), f.readline().strip())
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f.readline()
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self.assertEqual(get('3.0', '3.end'), f.readline().strip())
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if __name__ == '__main__':
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unittest.main(verbosity=2)
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