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510 lines
21 KiB
510 lines
21 KiB
from collections import namedtuple
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from tkinter import Text, Tk
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import unittest
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from unittest.mock import Mock, NonCallableMagicMock, patch, sentinel, ANY
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from test.support import requires
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from idlelib.config import idleConf
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from idlelib.squeezer import count_lines_with_wrapping, ExpandingButton, \
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Squeezer
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from idlelib import macosx
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from idlelib.textview import view_text
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from idlelib.tooltip import Hovertip
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from idlelib.pyshell import PyShell
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SENTINEL_VALUE = sentinel.SENTINEL_VALUE
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def get_test_tk_root(test_instance):
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"""Helper for tests: Create a root Tk object."""
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requires('gui')
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root = Tk()
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root.withdraw()
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def cleanup_root():
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root.update_idletasks()
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root.destroy()
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test_instance.addCleanup(cleanup_root)
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return root
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class CountLinesTest(unittest.TestCase):
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"""Tests for the count_lines_with_wrapping function."""
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def check(self, expected, text, linewidth, tabwidth):
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return self.assertEqual(
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expected,
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count_lines_with_wrapping(text, linewidth, tabwidth),
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)
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def test_count_empty(self):
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"""Test with an empty string."""
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self.assertEqual(count_lines_with_wrapping(""), 0)
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def test_count_begins_with_empty_line(self):
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"""Test with a string which begins with a newline."""
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self.assertEqual(count_lines_with_wrapping("\ntext"), 2)
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def test_count_ends_with_empty_line(self):
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"""Test with a string which ends with a newline."""
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self.assertEqual(count_lines_with_wrapping("text\n"), 1)
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def test_count_several_lines(self):
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"""Test with several lines of text."""
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self.assertEqual(count_lines_with_wrapping("1\n2\n3\n"), 3)
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def test_tab_width(self):
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"""Test with various tab widths and line widths."""
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self.check(expected=1, text='\t' * 1, linewidth=8, tabwidth=4)
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self.check(expected=1, text='\t' * 2, linewidth=8, tabwidth=4)
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self.check(expected=2, text='\t' * 3, linewidth=8, tabwidth=4)
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self.check(expected=2, text='\t' * 4, linewidth=8, tabwidth=4)
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self.check(expected=3, text='\t' * 5, linewidth=8, tabwidth=4)
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# test longer lines and various tab widths
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self.check(expected=4, text='\t' * 10, linewidth=12, tabwidth=4)
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self.check(expected=10, text='\t' * 10, linewidth=12, tabwidth=8)
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self.check(expected=2, text='\t' * 4, linewidth=10, tabwidth=3)
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# test tabwidth=1
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self.check(expected=2, text='\t' * 9, linewidth=5, tabwidth=1)
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self.check(expected=2, text='\t' * 10, linewidth=5, tabwidth=1)
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self.check(expected=3, text='\t' * 11, linewidth=5, tabwidth=1)
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# test for off-by-one errors
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self.check(expected=2, text='\t' * 6, linewidth=12, tabwidth=4)
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self.check(expected=3, text='\t' * 6, linewidth=11, tabwidth=4)
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self.check(expected=2, text='\t' * 6, linewidth=13, tabwidth=4)
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class SqueezerTest(unittest.TestCase):
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"""Tests for the Squeezer class."""
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def make_mock_editor_window(self):
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"""Create a mock EditorWindow instance."""
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editwin = NonCallableMagicMock()
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# isinstance(editwin, PyShell) must be true for Squeezer to enable
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# auto-squeezing; in practice this will always be true
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editwin.__class__ = PyShell
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return editwin
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def make_squeezer_instance(self, editor_window=None):
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"""Create an actual Squeezer instance with a mock EditorWindow."""
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if editor_window is None:
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editor_window = self.make_mock_editor_window()
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return Squeezer(editor_window)
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def test_count_lines(self):
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"""Test Squeezer.count_lines() with various inputs.
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This checks that Squeezer.count_lines() calls the
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count_lines_with_wrapping() function with the appropriate parameters.
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"""
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for tabwidth, linewidth in [(4, 80), (1, 79), (8, 80), (3, 120)]:
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self._test_count_lines_helper(linewidth=linewidth,
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tabwidth=tabwidth)
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def _prepare_mock_editwin_for_count_lines(self, editwin,
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linewidth, tabwidth):
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"""Prepare a mock EditorWindow object for Squeezer.count_lines."""
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CHAR_WIDTH = 10
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BORDER_WIDTH = 2
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PADDING_WIDTH = 1
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# Prepare all the required functionality on the mock EditorWindow object
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# so that the calculations in Squeezer.count_lines() can run.
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editwin.get_tk_tabwidth.return_value = tabwidth
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editwin.text.winfo_width.return_value = \
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linewidth * CHAR_WIDTH + 2 * (BORDER_WIDTH + PADDING_WIDTH)
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text_opts = {
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'border': BORDER_WIDTH,
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'padx': PADDING_WIDTH,
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'font': None,
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}
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editwin.text.cget = lambda opt: text_opts[opt]
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# monkey-path tkinter.font.Font with a mock object, so that
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# Font.measure('0') returns CHAR_WIDTH
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mock_font = Mock()
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def measure(char):
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if char == '0':
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return CHAR_WIDTH
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raise ValueError("measure should only be called on '0'!")
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mock_font.return_value.measure = measure
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patcher = patch('idlelib.squeezer.Font', mock_font)
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patcher.start()
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self.addCleanup(patcher.stop)
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def _test_count_lines_helper(self, linewidth, tabwidth):
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"""Helper for test_count_lines."""
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editwin = self.make_mock_editor_window()
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self._prepare_mock_editwin_for_count_lines(editwin, linewidth, tabwidth)
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squeezer = self.make_squeezer_instance(editwin)
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mock_count_lines = Mock(return_value=SENTINEL_VALUE)
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text = 'TEXT'
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with patch('idlelib.squeezer.count_lines_with_wrapping',
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mock_count_lines):
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self.assertIs(squeezer.count_lines(text), SENTINEL_VALUE)
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mock_count_lines.assert_called_with(text, linewidth, tabwidth)
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def test_init(self):
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"""Test the creation of Squeezer instances."""
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editwin = self.make_mock_editor_window()
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squeezer = self.make_squeezer_instance(editwin)
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self.assertIs(squeezer.editwin, editwin)
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self.assertEqual(squeezer.expandingbuttons, [])
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def test_write_no_tags(self):
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"""Test Squeezer's overriding of the EditorWindow's write() method."""
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editwin = self.make_mock_editor_window()
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for text in ['', 'TEXT', 'LONG TEXT' * 1000, 'MANY_LINES\n' * 100]:
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editwin.write = orig_write = Mock(return_value=SENTINEL_VALUE)
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squeezer = self.make_squeezer_instance(editwin)
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self.assertEqual(squeezer.editwin.write(text, ()), SENTINEL_VALUE)
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self.assertEqual(orig_write.call_count, 1)
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orig_write.assert_called_with(text, ())
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self.assertEqual(len(squeezer.expandingbuttons), 0)
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def test_write_not_stdout(self):
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"""Test Squeezer's overriding of the EditorWindow's write() method."""
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for text in ['', 'TEXT', 'LONG TEXT' * 1000, 'MANY_LINES\n' * 100]:
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editwin = self.make_mock_editor_window()
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editwin.write.return_value = SENTINEL_VALUE
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orig_write = editwin.write
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squeezer = self.make_squeezer_instance(editwin)
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self.assertEqual(squeezer.editwin.write(text, "stderr"),
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SENTINEL_VALUE)
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self.assertEqual(orig_write.call_count, 1)
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orig_write.assert_called_with(text, "stderr")
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self.assertEqual(len(squeezer.expandingbuttons), 0)
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def test_write_stdout(self):
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"""Test Squeezer's overriding of the EditorWindow's write() method."""
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editwin = self.make_mock_editor_window()
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self._prepare_mock_editwin_for_count_lines(editwin,
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linewidth=80, tabwidth=8)
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for text in ['', 'TEXT']:
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editwin.write = orig_write = Mock(return_value=SENTINEL_VALUE)
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squeezer = self.make_squeezer_instance(editwin)
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squeezer.auto_squeeze_min_lines = 50
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self.assertEqual(squeezer.editwin.write(text, "stdout"),
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SENTINEL_VALUE)
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self.assertEqual(orig_write.call_count, 1)
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orig_write.assert_called_with(text, "stdout")
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self.assertEqual(len(squeezer.expandingbuttons), 0)
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for text in ['LONG TEXT' * 1000, 'MANY_LINES\n' * 100]:
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editwin.write = orig_write = Mock(return_value=SENTINEL_VALUE)
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squeezer = self.make_squeezer_instance(editwin)
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squeezer.auto_squeeze_min_lines = 50
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self.assertEqual(squeezer.editwin.write(text, "stdout"), None)
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self.assertEqual(orig_write.call_count, 0)
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self.assertEqual(len(squeezer.expandingbuttons), 1)
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def test_auto_squeeze(self):
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"""Test that the auto-squeezing creates an ExpandingButton properly."""
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root = get_test_tk_root(self)
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text_widget = Text(root)
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text_widget.mark_set("iomark", "1.0")
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editwin = self.make_mock_editor_window()
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editwin.text = text_widget
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squeezer = self.make_squeezer_instance(editwin)
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squeezer.auto_squeeze_min_lines = 5
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squeezer.count_lines = Mock(return_value=6)
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editwin.write('TEXT\n'*6, "stdout")
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self.assertEqual(text_widget.get('1.0', 'end'), '\n')
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self.assertEqual(len(squeezer.expandingbuttons), 1)
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def test_squeeze_current_text_event(self):
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"""Test the squeeze_current_text event."""
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root = get_test_tk_root(self)
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# squeezing text should work for both stdout and stderr
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for tag_name in ["stdout", "stderr"]:
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text_widget = Text(root)
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text_widget.mark_set("iomark", "1.0")
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editwin = self.make_mock_editor_window()
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editwin.text = editwin.per.bottom = text_widget
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squeezer = self.make_squeezer_instance(editwin)
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squeezer.count_lines = Mock(return_value=6)
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# prepare some text in the Text widget
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text_widget.insert("1.0", "SOME\nTEXT\n", tag_name)
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text_widget.mark_set("insert", "1.0")
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self.assertEqual(text_widget.get('1.0', 'end'), 'SOME\nTEXT\n\n')
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self.assertEqual(len(squeezer.expandingbuttons), 0)
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# test squeezing the current text
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retval = squeezer.squeeze_current_text_event(event=Mock())
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self.assertEqual(retval, "break")
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self.assertEqual(text_widget.get('1.0', 'end'), '\n\n')
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self.assertEqual(len(squeezer.expandingbuttons), 1)
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self.assertEqual(squeezer.expandingbuttons[0].s, 'SOME\nTEXT')
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# test that expanding the squeezed text works and afterwards the
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# Text widget contains the original text
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squeezer.expandingbuttons[0].expand(event=Mock())
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self.assertEqual(text_widget.get('1.0', 'end'), 'SOME\nTEXT\n\n')
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self.assertEqual(len(squeezer.expandingbuttons), 0)
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def test_squeeze_current_text_event_no_allowed_tags(self):
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"""Test that the event doesn't squeeze text without a relevant tag."""
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root = get_test_tk_root(self)
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text_widget = Text(root)
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text_widget.mark_set("iomark", "1.0")
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editwin = self.make_mock_editor_window()
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editwin.text = editwin.per.bottom = text_widget
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squeezer = self.make_squeezer_instance(editwin)
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squeezer.count_lines = Mock(return_value=6)
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# prepare some text in the Text widget
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text_widget.insert("1.0", "SOME\nTEXT\n", "TAG")
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text_widget.mark_set("insert", "1.0")
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self.assertEqual(text_widget.get('1.0', 'end'), 'SOME\nTEXT\n\n')
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self.assertEqual(len(squeezer.expandingbuttons), 0)
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# test squeezing the current text
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retval = squeezer.squeeze_current_text_event(event=Mock())
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self.assertEqual(retval, "break")
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self.assertEqual(text_widget.get('1.0', 'end'), 'SOME\nTEXT\n\n')
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self.assertEqual(len(squeezer.expandingbuttons), 0)
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def test_squeeze_text_before_existing_squeezed_text(self):
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"""Test squeezing text before existing squeezed text."""
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root = get_test_tk_root(self)
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text_widget = Text(root)
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text_widget.mark_set("iomark", "1.0")
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editwin = self.make_mock_editor_window()
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editwin.text = editwin.per.bottom = text_widget
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squeezer = self.make_squeezer_instance(editwin)
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squeezer.count_lines = Mock(return_value=6)
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# prepare some text in the Text widget and squeeze it
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text_widget.insert("1.0", "SOME\nTEXT\n", "stdout")
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text_widget.mark_set("insert", "1.0")
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squeezer.squeeze_current_text_event(event=Mock())
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self.assertEqual(len(squeezer.expandingbuttons), 1)
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# test squeezing the current text
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text_widget.insert("1.0", "MORE\nSTUFF\n", "stdout")
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text_widget.mark_set("insert", "1.0")
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retval = squeezer.squeeze_current_text_event(event=Mock())
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self.assertEqual(retval, "break")
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self.assertEqual(text_widget.get('1.0', 'end'), '\n\n\n')
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self.assertEqual(len(squeezer.expandingbuttons), 2)
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self.assertTrue(text_widget.compare(
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squeezer.expandingbuttons[0],
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'<',
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squeezer.expandingbuttons[1],
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))
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GetOptionSignature = namedtuple('GetOptionSignature',
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'configType section option default type warn_on_default raw')
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@classmethod
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def _make_sig(cls, configType, section, option, default=sentinel.NOT_GIVEN,
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type=sentinel.NOT_GIVEN,
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warn_on_default=sentinel.NOT_GIVEN,
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raw=sentinel.NOT_GIVEN):
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return cls.GetOptionSignature(configType, section, option, default,
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type, warn_on_default, raw)
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@classmethod
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def get_GetOption_signature(cls, mock_call_obj):
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args, kwargs = mock_call_obj[-2:]
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return cls._make_sig(*args, **kwargs)
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def test_reload(self):
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"""Test the reload() class-method."""
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self.assertIsInstance(Squeezer.auto_squeeze_min_lines, int)
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idleConf.SetOption('main', 'PyShell', 'auto-squeeze-min-lines', '42')
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Squeezer.reload()
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self.assertEqual(Squeezer.auto_squeeze_min_lines, 42)
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class ExpandingButtonTest(unittest.TestCase):
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"""Tests for the ExpandingButton class."""
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# In these tests the squeezer instance is a mock, but actual tkinter
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# Text and Button instances are created.
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def make_mock_squeezer(self):
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"""Helper for tests: Create a mock Squeezer object."""
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root = get_test_tk_root(self)
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squeezer = Mock()
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squeezer.editwin.text = Text(root)
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# Set default values for the configuration settings
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squeezer.auto_squeeze_min_lines = 50
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return squeezer
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@patch('idlelib.squeezer.Hovertip', autospec=Hovertip)
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def test_init(self, MockHovertip):
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"""Test the simplest creation of an ExpandingButton."""
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squeezer = self.make_mock_squeezer()
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text_widget = squeezer.editwin.text
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expandingbutton = ExpandingButton('TEXT', 'TAGS', 50, squeezer)
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self.assertEqual(expandingbutton.s, 'TEXT')
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# check that the underlying tkinter.Button is properly configured
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self.assertEqual(expandingbutton.master, text_widget)
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self.assertTrue('50 lines' in expandingbutton.cget('text'))
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# check that the text widget still contains no text
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self.assertEqual(text_widget.get('1.0', 'end'), '\n')
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# check that the mouse events are bound
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self.assertIn('<Double-Button-1>', expandingbutton.bind())
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right_button_code = '<Button-%s>' % ('2' if macosx.isAquaTk() else '3')
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self.assertIn(right_button_code, expandingbutton.bind())
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# check that ToolTip was called once, with appropriate values
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self.assertEqual(MockHovertip.call_count, 1)
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MockHovertip.assert_called_with(expandingbutton, ANY, hover_delay=ANY)
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# check that 'right-click' appears in the tooltip text
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tooltip_text = MockHovertip.call_args[0][1]
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self.assertIn('right-click', tooltip_text.lower())
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def test_expand(self):
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"""Test the expand event."""
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squeezer = self.make_mock_squeezer()
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expandingbutton = ExpandingButton('TEXT', 'TAGS', 50, squeezer)
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# insert the button into the text widget
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# (this is normally done by the Squeezer class)
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text_widget = expandingbutton.text
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text_widget.window_create("1.0", window=expandingbutton)
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# set base_text to the text widget, so that changes are actually made
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# to it (by ExpandingButton) and we can inspect these changes afterwards
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expandingbutton.base_text = expandingbutton.text
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# trigger the expand event
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retval = expandingbutton.expand(event=Mock())
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self.assertEqual(retval, None)
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# check that the text was inserted into the text widget
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self.assertEqual(text_widget.get('1.0', 'end'), 'TEXT\n')
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# check that the 'TAGS' tag was set on the inserted text
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text_end_index = text_widget.index('end-1c')
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self.assertEqual(text_widget.get('1.0', text_end_index), 'TEXT')
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self.assertEqual(text_widget.tag_nextrange('TAGS', '1.0'),
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('1.0', text_end_index))
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# check that the button removed itself from squeezer.expandingbuttons
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self.assertEqual(squeezer.expandingbuttons.remove.call_count, 1)
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squeezer.expandingbuttons.remove.assert_called_with(expandingbutton)
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def test_expand_dangerous_oupput(self):
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"""Test that expanding very long output asks user for confirmation."""
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squeezer = self.make_mock_squeezer()
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text = 'a' * 10**5
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expandingbutton = ExpandingButton(text, 'TAGS', 50, squeezer)
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expandingbutton.set_is_dangerous()
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self.assertTrue(expandingbutton.is_dangerous)
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# insert the button into the text widget
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# (this is normally done by the Squeezer class)
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text_widget = expandingbutton.text
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text_widget.window_create("1.0", window=expandingbutton)
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# set base_text to the text widget, so that changes are actually made
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# to it (by ExpandingButton) and we can inspect these changes afterwards
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expandingbutton.base_text = expandingbutton.text
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# patch the message box module to always return False
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with patch('idlelib.squeezer.tkMessageBox') as mock_msgbox:
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mock_msgbox.askokcancel.return_value = False
|
|
mock_msgbox.askyesno.return_value = False
|
|
|
|
# trigger the expand event
|
|
retval = expandingbutton.expand(event=Mock())
|
|
|
|
# check that the event chain was broken and no text was inserted
|
|
self.assertEqual(retval, 'break')
|
|
self.assertEqual(expandingbutton.text.get('1.0', 'end-1c'), '')
|
|
|
|
# patch the message box module to always return True
|
|
with patch('idlelib.squeezer.tkMessageBox') as mock_msgbox:
|
|
mock_msgbox.askokcancel.return_value = True
|
|
mock_msgbox.askyesno.return_value = True
|
|
|
|
# trigger the expand event
|
|
retval = expandingbutton.expand(event=Mock())
|
|
|
|
# check that the event chain wasn't broken and the text was inserted
|
|
self.assertEqual(retval, None)
|
|
self.assertEqual(expandingbutton.text.get('1.0', 'end-1c'), text)
|
|
|
|
def test_copy(self):
|
|
"""Test the copy event."""
|
|
# testing with the actual clipboard proved problematic, so this test
|
|
# replaces the clipboard manipulation functions with mocks and checks
|
|
# that they are called appropriately
|
|
squeezer = self.make_mock_squeezer()
|
|
expandingbutton = ExpandingButton('TEXT', 'TAGS', 50, squeezer)
|
|
expandingbutton.clipboard_clear = Mock()
|
|
expandingbutton.clipboard_append = Mock()
|
|
|
|
# trigger the copy event
|
|
retval = expandingbutton.copy(event=Mock())
|
|
self.assertEqual(retval, None)
|
|
|
|
# check that the expanding button called clipboard_clear() and
|
|
# clipboard_append('TEXT') once each
|
|
self.assertEqual(expandingbutton.clipboard_clear.call_count, 1)
|
|
self.assertEqual(expandingbutton.clipboard_append.call_count, 1)
|
|
expandingbutton.clipboard_append.assert_called_with('TEXT')
|
|
|
|
def test_view(self):
|
|
"""Test the view event."""
|
|
squeezer = self.make_mock_squeezer()
|
|
expandingbutton = ExpandingButton('TEXT', 'TAGS', 50, squeezer)
|
|
expandingbutton.selection_own = Mock()
|
|
|
|
with patch('idlelib.squeezer.view_text', autospec=view_text)\
|
|
as mock_view_text:
|
|
# trigger the view event
|
|
expandingbutton.view(event=Mock())
|
|
|
|
# check that the expanding button called view_text
|
|
self.assertEqual(mock_view_text.call_count, 1)
|
|
|
|
# check that the proper text was passed
|
|
self.assertEqual(mock_view_text.call_args[0][2], 'TEXT')
|
|
|
|
def test_rmenu(self):
|
|
"""Test the context menu."""
|
|
squeezer = self.make_mock_squeezer()
|
|
expandingbutton = ExpandingButton('TEXT', 'TAGS', 50, squeezer)
|
|
with patch('tkinter.Menu') as mock_Menu:
|
|
mock_menu = Mock()
|
|
mock_Menu.return_value = mock_menu
|
|
mock_event = Mock()
|
|
mock_event.x = 10
|
|
mock_event.y = 10
|
|
expandingbutton.context_menu_event(event=mock_event)
|
|
self.assertEqual(mock_menu.add_command.call_count,
|
|
len(expandingbutton.rmenu_specs))
|
|
for label, *data in expandingbutton.rmenu_specs:
|
|
mock_menu.add_command.assert_any_call(label=label, command=ANY)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(verbosity=2)
|