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466 lines
19 KiB
Python
466 lines
19 KiB
Python
"Test squeezer, coverage 95%"
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from textwrap import dedent
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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.percolator import Percolator
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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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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):
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return self.assertEqual(
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expected,
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count_lines_with_wrapping(text, linewidth),
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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_empty_lines(self):
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self.check(expected=1, text='\n', linewidth=80)
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self.check(expected=2, text='\n\n', linewidth=80)
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self.check(expected=10, text='\n' * 10, linewidth=80)
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def test_long_line(self):
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self.check(expected=3, text='a' * 200, linewidth=80)
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self.check(expected=3, text='a' * 200 + '\n', linewidth=80)
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def test_several_lines_different_lengths(self):
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text = dedent("""\
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13 characters
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43 is the number of characters on this line
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7 chars
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13 characters""")
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self.check(expected=5, text=text, linewidth=80)
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self.check(expected=5, text=text + '\n', linewidth=80)
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self.check(expected=6, text=text, linewidth=40)
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self.check(expected=7, text=text, linewidth=20)
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self.check(expected=11, text=text, linewidth=10)
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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, with_text_widget=False):
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"""Create a mock EditorWindow instance."""
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editwin = NonCallableMagicMock()
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editwin.width = 80
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if with_text_widget:
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editwin.root = get_test_tk_root(self)
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text_widget = self.make_text_widget(root=editwin.root)
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editwin.text = editwin.per.bottom = text_widget
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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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squeezer = Squeezer(editor_window)
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return squeezer
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def make_text_widget(self, root=None):
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if root is None:
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root = get_test_tk_root(self)
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text_widget = Text(root)
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text_widget["font"] = ('Courier', 10)
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text_widget.mark_set("iomark", "1.0")
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return text_widget
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def set_idleconf_option_with_cleanup(self, configType, section, option, value):
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prev_val = idleConf.GetOption(configType, section, option)
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idleConf.SetOption(configType, section, option, value)
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self.addCleanup(idleConf.SetOption,
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configType, section, option, prev_val)
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def test_count_lines(self):
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"""Test Squeezer.count_lines() with various inputs."""
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editwin = self.make_mock_editor_window()
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squeezer = self.make_squeezer_instance(editwin)
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for text_code, line_width, expected in [
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(r"'\n'", 80, 1),
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(r"'\n' * 3", 80, 3),
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(r"'a' * 40 + '\n'", 80, 1),
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(r"'a' * 80 + '\n'", 80, 1),
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(r"'a' * 200 + '\n'", 80, 3),
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(r"'aa\t' * 20", 80, 2),
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(r"'aa\t' * 21", 80, 3),
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(r"'aa\t' * 20", 40, 4),
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]:
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with self.subTest(text_code=text_code,
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line_width=line_width,
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expected=expected):
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text = eval(text_code)
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with patch.object(editwin, 'width', line_width):
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self.assertEqual(squeezer.count_lines(text), expected)
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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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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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editwin = self.make_mock_editor_window(with_text_widget=True)
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text_widget = editwin.text
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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(self):
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"""Test the squeeze_current_text method."""
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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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editwin = self.make_mock_editor_window(with_text_widget=True)
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text_widget = editwin.text
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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()
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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
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# the Text widget contains the original text.
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squeezer.expandingbuttons[0].expand()
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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_no_allowed_tags(self):
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"""Test that the event doesn't squeeze text without a relevant tag."""
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editwin = self.make_mock_editor_window(with_text_widget=True)
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text_widget = editwin.text
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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()
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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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editwin = self.make_mock_editor_window(with_text_widget=True)
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text_widget = editwin.text
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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()
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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()
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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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def test_reload(self):
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"""Test the reload() class-method."""
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editwin = self.make_mock_editor_window(with_text_widget=True)
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squeezer = self.make_squeezer_instance(editwin)
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orig_auto_squeeze_min_lines = squeezer.auto_squeeze_min_lines
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# Increase auto-squeeze-min-lines.
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new_auto_squeeze_min_lines = orig_auto_squeeze_min_lines + 10
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self.set_idleconf_option_with_cleanup(
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'main', 'PyShell', 'auto-squeeze-min-lines',
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str(new_auto_squeeze_min_lines))
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Squeezer.reload()
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self.assertEqual(squeezer.auto_squeeze_min_lines,
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new_auto_squeeze_min_lines)
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def test_reload_no_squeezer_instances(self):
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"""Test that Squeezer.reload() runs without any instances existing."""
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Squeezer.reload()
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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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squeezer.editwin.per = Percolator(squeezer.editwin.text)
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self.addCleanup(squeezer.editwin.per.close)
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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 = squeezer.editwin.text
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text_widget.window_create("1.0", window=expandingbutton)
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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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# Patch the message box module to always return False.
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with patch('idlelib.squeezer.messagebox') as mock_msgbox:
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mock_msgbox.askokcancel.return_value = False
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mock_msgbox.askyesno.return_value = False
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# Trigger the expand event.
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retval = expandingbutton.expand(event=Mock())
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# Check that the event chain was broken and no text was inserted.
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self.assertEqual(retval, 'break')
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self.assertEqual(expandingbutton.text.get('1.0', 'end-1c'), '')
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# Patch the message box module to always return True.
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with patch('idlelib.squeezer.messagebox') as mock_msgbox:
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mock_msgbox.askokcancel.return_value = True
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mock_msgbox.askyesno.return_value = True
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# Trigger the expand event.
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retval = expandingbutton.expand(event=Mock())
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# Check that the event chain wasn't broken and the text was inserted.
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self.assertEqual(retval, None)
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self.assertEqual(expandingbutton.text.get('1.0', 'end-1c'), text)
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def test_copy(self):
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"""Test the copy event."""
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# Testing with the actual clipboard proved problematic, so this
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# test replaces the clipboard manipulation functions with mocks
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# and checks that they are called appropriately.
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squeezer = self.make_mock_squeezer()
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expandingbutton = ExpandingButton('TEXT', 'TAGS', 50, squeezer)
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expandingbutton.clipboard_clear = Mock()
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expandingbutton.clipboard_append = Mock()
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# Trigger the copy event.
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retval = expandingbutton.copy(event=Mock())
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self.assertEqual(retval, None)
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# Vheck that the expanding button called clipboard_clear() and
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# clipboard_append('TEXT') once each.
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self.assertEqual(expandingbutton.clipboard_clear.call_count, 1)
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self.assertEqual(expandingbutton.clipboard_append.call_count, 1)
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expandingbutton.clipboard_append.assert_called_with('TEXT')
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def test_view(self):
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"""Test the view event."""
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squeezer = self.make_mock_squeezer()
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expandingbutton = ExpandingButton('TEXT', 'TAGS', 50, squeezer)
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expandingbutton.selection_own = Mock()
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with patch('idlelib.squeezer.view_text', autospec=view_text)\
|
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as mock_view_text:
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|
# Trigger the view event.
|
|
expandingbutton.view(event=Mock())
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|
|
|
# Check that the expanding button called view_text.
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|
self.assertEqual(mock_view_text.call_count, 1)
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|
|
|
# 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)
|