cpython/Lib/idlelib/idle_test/test_sidebar.py
Christopher Chavez d25d4ee60c
gh-103820: IDLE: Do not interpret buttons 4/5 as scrolling on non-X11 (GH-103821)
Also fix test_mousewheel: do not skip a check which was broken due to incorrect
delta on Aqua and XQuartz, and probably not because of `.update_idletasks()`.
2024-02-02 10:38:43 +00:00

776 lines
26 KiB
Python

"""Test sidebar, coverage 85%"""
from textwrap import dedent
import sys
from itertools import chain
import unittest
import unittest.mock
from test.support import requires, swap_attr
from test import support
import tkinter as tk
from idlelib.idle_test.tkinter_testing_utils import run_in_tk_mainloop
from idlelib.delegator import Delegator
from idlelib.editor import fixwordbreaks
from idlelib.percolator import Percolator
import idlelib.pyshell
from idlelib.pyshell import fix_x11_paste, PyShell, PyShellFileList
from idlelib.run import fix_scaling
import idlelib.sidebar
from idlelib.sidebar import get_end_linenumber, get_lineno
class Dummy_editwin:
def __init__(self, text):
self.text = text
self.text_frame = self.text.master
self.per = Percolator(text)
self.undo = Delegator()
self.per.insertfilter(self.undo)
def setvar(self, name, value):
pass
def getlineno(self, index):
return int(float(self.text.index(index)))
class LineNumbersTest(unittest.TestCase):
@classmethod
def setUpClass(cls):
requires('gui')
cls.root = tk.Tk()
cls.root.withdraw()
cls.text_frame = tk.Frame(cls.root)
cls.text_frame.pack(side=tk.LEFT, fill=tk.BOTH, expand=True)
cls.text_frame.rowconfigure(1, weight=1)
cls.text_frame.columnconfigure(1, weight=1)
cls.text = tk.Text(cls.text_frame, width=80, height=24, wrap=tk.NONE)
cls.text.grid(row=1, column=1, sticky=tk.NSEW)
cls.editwin = Dummy_editwin(cls.text)
cls.editwin.vbar = tk.Scrollbar(cls.text_frame)
@classmethod
def tearDownClass(cls):
cls.editwin.per.close()
cls.root.update_idletasks()
cls.root.destroy()
del cls.text, cls.text_frame, cls.editwin, cls.root
def setUp(self):
self.linenumber = idlelib.sidebar.LineNumbers(self.editwin)
self.highlight_cfg = {"background": '#abcdef',
"foreground": '#123456'}
orig_idleConf_GetHighlight = idlelib.sidebar.idleConf.GetHighlight
def mock_idleconf_GetHighlight(theme, element):
if element == 'linenumber':
return self.highlight_cfg
return orig_idleConf_GetHighlight(theme, element)
GetHighlight_patcher = unittest.mock.patch.object(
idlelib.sidebar.idleConf, 'GetHighlight', mock_idleconf_GetHighlight)
GetHighlight_patcher.start()
self.addCleanup(GetHighlight_patcher.stop)
self.font_override = 'TkFixedFont'
def mock_idleconf_GetFont(root, configType, section):
return self.font_override
GetFont_patcher = unittest.mock.patch.object(
idlelib.sidebar.idleConf, 'GetFont', mock_idleconf_GetFont)
GetFont_patcher.start()
self.addCleanup(GetFont_patcher.stop)
def tearDown(self):
self.text.delete('1.0', 'end')
def get_selection(self):
return tuple(map(str, self.text.tag_ranges('sel')))
def get_line_screen_position(self, line):
bbox = self.linenumber.sidebar_text.bbox(f'{line}.end -1c')
x = bbox[0] + 2
y = bbox[1] + 2
return x, y
def assert_state_disabled(self):
state = self.linenumber.sidebar_text.config()['state']
self.assertEqual(state[-1], tk.DISABLED)
def get_sidebar_text_contents(self):
return self.linenumber.sidebar_text.get('1.0', tk.END)
def assert_sidebar_n_lines(self, n_lines):
expected = '\n'.join(chain(map(str, range(1, n_lines + 1)), ['']))
self.assertEqual(self.get_sidebar_text_contents(), expected)
def assert_text_equals(self, expected):
return self.assertEqual(self.text.get('1.0', 'end'), expected)
def test_init_empty(self):
self.assert_sidebar_n_lines(1)
def test_init_not_empty(self):
self.text.insert('insert', 'foo bar\n'*3)
self.assert_text_equals('foo bar\n'*3 + '\n')
self.assert_sidebar_n_lines(4)
def test_toggle_linenumbering(self):
self.assertEqual(self.linenumber.is_shown, False)
self.linenumber.show_sidebar()
self.assertEqual(self.linenumber.is_shown, True)
self.linenumber.hide_sidebar()
self.assertEqual(self.linenumber.is_shown, False)
self.linenumber.hide_sidebar()
self.assertEqual(self.linenumber.is_shown, False)
self.linenumber.show_sidebar()
self.assertEqual(self.linenumber.is_shown, True)
self.linenumber.show_sidebar()
self.assertEqual(self.linenumber.is_shown, True)
def test_insert(self):
self.text.insert('insert', 'foobar')
self.assert_text_equals('foobar\n')
self.assert_sidebar_n_lines(1)
self.assert_state_disabled()
self.text.insert('insert', '\nfoo')
self.assert_text_equals('foobar\nfoo\n')
self.assert_sidebar_n_lines(2)
self.assert_state_disabled()
self.text.insert('insert', 'hello\n'*2)
self.assert_text_equals('foobar\nfoohello\nhello\n\n')
self.assert_sidebar_n_lines(4)
self.assert_state_disabled()
self.text.insert('insert', '\nworld')
self.assert_text_equals('foobar\nfoohello\nhello\n\nworld\n')
self.assert_sidebar_n_lines(5)
self.assert_state_disabled()
def test_delete(self):
self.text.insert('insert', 'foobar')
self.assert_text_equals('foobar\n')
self.text.delete('1.1', '1.3')
self.assert_text_equals('fbar\n')
self.assert_sidebar_n_lines(1)
self.assert_state_disabled()
self.text.insert('insert', 'foo\n'*2)
self.assert_text_equals('fbarfoo\nfoo\n\n')
self.assert_sidebar_n_lines(3)
self.assert_state_disabled()
# Deleting up to "2.end" doesn't delete the final newline.
self.text.delete('2.0', '2.end')
self.assert_text_equals('fbarfoo\n\n\n')
self.assert_sidebar_n_lines(3)
self.assert_state_disabled()
self.text.delete('1.3', 'end')
self.assert_text_equals('fba\n')
self.assert_sidebar_n_lines(1)
self.assert_state_disabled()
# Text widgets always keep a single '\n' character at the end.
self.text.delete('1.0', 'end')
self.assert_text_equals('\n')
self.assert_sidebar_n_lines(1)
self.assert_state_disabled()
def test_sidebar_text_width(self):
"""
Test that linenumber text widget is always at the minimum
width
"""
def get_width():
return self.linenumber.sidebar_text.config()['width'][-1]
self.assert_sidebar_n_lines(1)
self.assertEqual(get_width(), 1)
self.text.insert('insert', 'foo')
self.assert_sidebar_n_lines(1)
self.assertEqual(get_width(), 1)
self.text.insert('insert', 'foo\n'*8)
self.assert_sidebar_n_lines(9)
self.assertEqual(get_width(), 1)
self.text.insert('insert', 'foo\n')
self.assert_sidebar_n_lines(10)
self.assertEqual(get_width(), 2)
self.text.insert('insert', 'foo\n')
self.assert_sidebar_n_lines(11)
self.assertEqual(get_width(), 2)
self.text.delete('insert -1l linestart', 'insert linestart')
self.assert_sidebar_n_lines(10)
self.assertEqual(get_width(), 2)
self.text.delete('insert -1l linestart', 'insert linestart')
self.assert_sidebar_n_lines(9)
self.assertEqual(get_width(), 1)
self.text.insert('insert', 'foo\n'*90)
self.assert_sidebar_n_lines(99)
self.assertEqual(get_width(), 2)
self.text.insert('insert', 'foo\n')
self.assert_sidebar_n_lines(100)
self.assertEqual(get_width(), 3)
self.text.insert('insert', 'foo\n')
self.assert_sidebar_n_lines(101)
self.assertEqual(get_width(), 3)
self.text.delete('insert -1l linestart', 'insert linestart')
self.assert_sidebar_n_lines(100)
self.assertEqual(get_width(), 3)
self.text.delete('insert -1l linestart', 'insert linestart')
self.assert_sidebar_n_lines(99)
self.assertEqual(get_width(), 2)
self.text.delete('50.0 -1c', 'end -1c')
self.assert_sidebar_n_lines(49)
self.assertEqual(get_width(), 2)
self.text.delete('5.0 -1c', 'end -1c')
self.assert_sidebar_n_lines(4)
self.assertEqual(get_width(), 1)
# Text widgets always keep a single '\n' character at the end.
self.text.delete('1.0', 'end -1c')
self.assert_sidebar_n_lines(1)
self.assertEqual(get_width(), 1)
# The following tests are temporarily disabled due to relying on
# simulated user input and inspecting which text is selected, which
# are fragile and can fail when several GUI tests are run in parallel
# or when the windows created by the test lose focus.
#
# TODO: Re-work these tests or remove them from the test suite.
@unittest.skip('test disabled')
def test_click_selection(self):
self.linenumber.show_sidebar()
self.text.insert('1.0', 'one\ntwo\nthree\nfour\n')
self.root.update()
# Click on the second line.
x, y = self.get_line_screen_position(2)
self.linenumber.sidebar_text.event_generate('<Button-1>', x=x, y=y)
self.linenumber.sidebar_text.update()
self.root.update()
self.assertEqual(self.get_selection(), ('2.0', '3.0'))
def simulate_drag(self, start_line, end_line):
start_x, start_y = self.get_line_screen_position(start_line)
end_x, end_y = self.get_line_screen_position(end_line)
self.linenumber.sidebar_text.event_generate('<Button-1>',
x=start_x, y=start_y)
self.root.update()
def lerp(a, b, steps):
"""linearly interpolate from a to b (inclusive) in equal steps"""
last_step = steps - 1
for i in range(steps):
yield ((last_step - i) / last_step) * a + (i / last_step) * b
for x, y in zip(
map(int, lerp(start_x, end_x, steps=11)),
map(int, lerp(start_y, end_y, steps=11)),
):
self.linenumber.sidebar_text.event_generate('<B1-Motion>', x=x, y=y)
self.root.update()
self.linenumber.sidebar_text.event_generate('<ButtonRelease-1>',
x=end_x, y=end_y)
self.root.update()
@unittest.skip('test disabled')
def test_drag_selection_down(self):
self.linenumber.show_sidebar()
self.text.insert('1.0', 'one\ntwo\nthree\nfour\nfive\n')
self.root.update()
# Drag from the second line to the fourth line.
self.simulate_drag(2, 4)
self.assertEqual(self.get_selection(), ('2.0', '5.0'))
@unittest.skip('test disabled')
def test_drag_selection_up(self):
self.linenumber.show_sidebar()
self.text.insert('1.0', 'one\ntwo\nthree\nfour\nfive\n')
self.root.update()
# Drag from the fourth line to the second line.
self.simulate_drag(4, 2)
self.assertEqual(self.get_selection(), ('2.0', '5.0'))
def test_scroll(self):
self.linenumber.show_sidebar()
self.text.insert('1.0', 'line\n' * 100)
self.root.update()
# Scroll down 10 lines.
self.text.yview_scroll(10, 'unit')
self.root.update()
self.assertEqual(self.text.index('@0,0'), '11.0')
self.assertEqual(self.linenumber.sidebar_text.index('@0,0'), '11.0')
# Generate a mouse-wheel event and make sure it scrolled up or down.
# The meaning of the "delta" is OS-dependent, so this just checks for
# any change.
self.linenumber.sidebar_text.event_generate('<MouseWheel>',
x=0, y=0,
delta=10)
self.root.update()
self.assertNotEqual(self.text.index('@0,0'), '11.0')
self.assertNotEqual(self.linenumber.sidebar_text.index('@0,0'), '11.0')
def test_font(self):
ln = self.linenumber
orig_font = ln.sidebar_text['font']
test_font = 'TkTextFont'
self.assertNotEqual(orig_font, test_font)
# Ensure line numbers aren't shown.
ln.hide_sidebar()
self.font_override = test_font
# Nothing breaks when line numbers aren't shown.
ln.update_font()
# Activate line numbers, previous font change is immediately effective.
ln.show_sidebar()
self.assertEqual(ln.sidebar_text['font'], test_font)
# Call the font update with line numbers shown, change is picked up.
self.font_override = orig_font
ln.update_font()
self.assertEqual(ln.sidebar_text['font'], orig_font)
def test_highlight_colors(self):
ln = self.linenumber
orig_colors = dict(self.highlight_cfg)
test_colors = {'background': '#222222', 'foreground': '#ffff00'}
def assert_colors_are_equal(colors):
self.assertEqual(ln.sidebar_text['background'], colors['background'])
self.assertEqual(ln.sidebar_text['foreground'], colors['foreground'])
# Ensure line numbers aren't shown.
ln.hide_sidebar()
self.highlight_cfg = test_colors
# Nothing breaks with inactive line numbers.
ln.update_colors()
# Show line numbers, previous colors change is immediately effective.
ln.show_sidebar()
assert_colors_are_equal(test_colors)
# Call colors update with no change to the configured colors.
ln.update_colors()
assert_colors_are_equal(test_colors)
# Call the colors update with line numbers shown, change is picked up.
self.highlight_cfg = orig_colors
ln.update_colors()
assert_colors_are_equal(orig_colors)
class ShellSidebarTest(unittest.TestCase):
root: tk.Tk = None
shell: PyShell = None
@classmethod
def setUpClass(cls):
requires('gui')
cls.root = root = tk.Tk()
root.withdraw()
fix_scaling(root)
fixwordbreaks(root)
fix_x11_paste(root)
cls.flist = flist = PyShellFileList(root)
# See #43981 about macosx.setupApp(root, flist) causing failure.
root.update_idletasks()
cls.init_shell()
@classmethod
def tearDownClass(cls):
if cls.shell is not None:
cls.shell.executing = False
cls.shell.close()
cls.shell = None
cls.flist = None
cls.root.update_idletasks()
cls.root.destroy()
cls.root = None
@classmethod
def init_shell(cls):
cls.shell = cls.flist.open_shell()
cls.shell.pollinterval = 10
cls.root.update()
cls.n_preface_lines = get_lineno(cls.shell.text, 'end-1c') - 1
@classmethod
def reset_shell(cls):
cls.shell.per.bottom.delete(f'{cls.n_preface_lines+1}.0', 'end-1c')
cls.shell.shell_sidebar.update_sidebar()
cls.root.update()
def setUp(self):
# In some test environments, e.g. Azure Pipelines (as of
# Apr. 2021), sys.stdout is changed between tests. However,
# PyShell relies on overriding sys.stdout when run without a
# sub-process (as done here; see setUpClass).
self._saved_stdout = None
if sys.stdout != self.shell.stdout:
self._saved_stdout = sys.stdout
sys.stdout = self.shell.stdout
self.reset_shell()
def tearDown(self):
if self._saved_stdout is not None:
sys.stdout = self._saved_stdout
def get_sidebar_lines(self):
canvas = self.shell.shell_sidebar.canvas
texts = list(canvas.find(tk.ALL))
texts_by_y_coords = {
canvas.bbox(text)[1]: canvas.itemcget(text, 'text')
for text in texts
}
line_y_coords = self.get_shell_line_y_coords()
return [texts_by_y_coords.get(y, None) for y in line_y_coords]
def assert_sidebar_lines_end_with(self, expected_lines):
self.shell.shell_sidebar.update_sidebar()
self.assertEqual(
self.get_sidebar_lines()[-len(expected_lines):],
expected_lines,
)
def get_shell_line_y_coords(self):
text = self.shell.text
y_coords = []
index = text.index("@0,0")
if index.split('.', 1)[1] != '0':
index = text.index(f"{index} +1line linestart")
while (lineinfo := text.dlineinfo(index)) is not None:
y_coords.append(lineinfo[1])
index = text.index(f"{index} +1line")
return y_coords
def get_sidebar_line_y_coords(self):
canvas = self.shell.shell_sidebar.canvas
texts = list(canvas.find(tk.ALL))
texts.sort(key=lambda text: canvas.bbox(text)[1])
return [canvas.bbox(text)[1] for text in texts]
def assert_sidebar_lines_synced(self):
self.assertLessEqual(
set(self.get_sidebar_line_y_coords()),
set(self.get_shell_line_y_coords()),
)
def do_input(self, input):
shell = self.shell
text = shell.text
for line_index, line in enumerate(input.split('\n')):
if line_index > 0:
text.event_generate('<<newline-and-indent>>')
text.insert('insert', line, 'stdin')
def test_initial_state(self):
sidebar_lines = self.get_sidebar_lines()
self.assertEqual(
sidebar_lines,
[None] * (len(sidebar_lines) - 1) + ['>>>'],
)
self.assert_sidebar_lines_synced()
@run_in_tk_mainloop()
def test_single_empty_input(self):
self.do_input('\n')
yield
self.assert_sidebar_lines_end_with(['>>>', '>>>'])
@run_in_tk_mainloop()
def test_single_line_statement(self):
self.do_input('1\n')
yield
self.assert_sidebar_lines_end_with(['>>>', None, '>>>'])
@run_in_tk_mainloop()
def test_multi_line_statement(self):
# Block statements are not indented because IDLE auto-indents.
self.do_input(dedent('''\
if True:
print(1)
'''))
yield
self.assert_sidebar_lines_end_with([
'>>>',
'...',
'...',
'...',
None,
'>>>',
])
@run_in_tk_mainloop()
def test_single_long_line_wraps(self):
self.do_input('1' * 200 + '\n')
yield
self.assert_sidebar_lines_end_with(['>>>', None, '>>>'])
self.assert_sidebar_lines_synced()
@run_in_tk_mainloop()
def test_squeeze_multi_line_output(self):
shell = self.shell
text = shell.text
self.do_input('print("a\\nb\\nc")\n')
yield
self.assert_sidebar_lines_end_with(['>>>', None, None, None, '>>>'])
text.mark_set('insert', f'insert -1line linestart')
text.event_generate('<<squeeze-current-text>>')
yield
self.assert_sidebar_lines_end_with(['>>>', None, '>>>'])
self.assert_sidebar_lines_synced()
shell.squeezer.expandingbuttons[0].expand()
yield
self.assert_sidebar_lines_end_with(['>>>', None, None, None, '>>>'])
self.assert_sidebar_lines_synced()
@run_in_tk_mainloop()
def test_interrupt_recall_undo_redo(self):
text = self.shell.text
# Block statements are not indented because IDLE auto-indents.
initial_sidebar_lines = self.get_sidebar_lines()
self.do_input(dedent('''\
if True:
print(1)
'''))
yield
self.assert_sidebar_lines_end_with(['>>>', '...', '...'])
with_block_sidebar_lines = self.get_sidebar_lines()
self.assertNotEqual(with_block_sidebar_lines, initial_sidebar_lines)
# Control-C
text.event_generate('<<interrupt-execution>>')
yield
self.assert_sidebar_lines_end_with(['>>>', '...', '...', None, '>>>'])
# Recall previous via history
text.event_generate('<<history-previous>>')
text.event_generate('<<interrupt-execution>>')
yield
self.assert_sidebar_lines_end_with(['>>>', '...', None, '>>>'])
# Recall previous via recall
text.mark_set('insert', text.index('insert -2l'))
text.event_generate('<<newline-and-indent>>')
yield
text.event_generate('<<undo>>')
yield
self.assert_sidebar_lines_end_with(['>>>'])
text.event_generate('<<redo>>')
yield
self.assert_sidebar_lines_end_with(['>>>', '...'])
text.event_generate('<<newline-and-indent>>')
text.event_generate('<<newline-and-indent>>')
yield
self.assert_sidebar_lines_end_with(
['>>>', '...', '...', '...', None, '>>>']
)
@run_in_tk_mainloop()
def test_very_long_wrapped_line(self):
with support.adjust_int_max_str_digits(11_111), \
swap_attr(self.shell, 'squeezer', None):
self.do_input('x = ' + '1'*10_000 + '\n')
yield
self.assertEqual(self.get_sidebar_lines(), ['>>>'])
def test_font(self):
sidebar = self.shell.shell_sidebar
test_font = 'TkTextFont'
def mock_idleconf_GetFont(root, configType, section):
return test_font
GetFont_patcher = unittest.mock.patch.object(
idlelib.sidebar.idleConf, 'GetFont', mock_idleconf_GetFont)
GetFont_patcher.start()
def cleanup():
GetFont_patcher.stop()
sidebar.update_font()
self.addCleanup(cleanup)
def get_sidebar_font():
canvas = sidebar.canvas
texts = list(canvas.find(tk.ALL))
fonts = {canvas.itemcget(text, 'font') for text in texts}
self.assertEqual(len(fonts), 1)
return next(iter(fonts))
self.assertNotEqual(get_sidebar_font(), test_font)
sidebar.update_font()
self.assertEqual(get_sidebar_font(), test_font)
def test_highlight_colors(self):
sidebar = self.shell.shell_sidebar
test_colors = {"background": '#abcdef', "foreground": '#123456'}
orig_idleConf_GetHighlight = idlelib.sidebar.idleConf.GetHighlight
def mock_idleconf_GetHighlight(theme, element):
if element in ['linenumber', 'console']:
return test_colors
return orig_idleConf_GetHighlight(theme, element)
GetHighlight_patcher = unittest.mock.patch.object(
idlelib.sidebar.idleConf, 'GetHighlight',
mock_idleconf_GetHighlight)
GetHighlight_patcher.start()
def cleanup():
GetHighlight_patcher.stop()
sidebar.update_colors()
self.addCleanup(cleanup)
def get_sidebar_colors():
canvas = sidebar.canvas
texts = list(canvas.find(tk.ALL))
fgs = {canvas.itemcget(text, 'fill') for text in texts}
self.assertEqual(len(fgs), 1)
fg = next(iter(fgs))
bg = canvas.cget('background')
return {"background": bg, "foreground": fg}
self.assertNotEqual(get_sidebar_colors(), test_colors)
sidebar.update_colors()
self.assertEqual(get_sidebar_colors(), test_colors)
@run_in_tk_mainloop()
def test_mousewheel(self):
sidebar = self.shell.shell_sidebar
text = self.shell.text
# Enter a 100-line string to scroll the shell screen down.
self.do_input('x = """' + '\n'*100 + '"""\n')
yield
self.assertGreater(get_lineno(text, '@0,0'), 1)
last_lineno = get_end_linenumber(text)
self.assertIsNotNone(text.dlineinfo(text.index(f'{last_lineno}.0')))
# Delta for <MouseWheel>, whose meaning is platform-dependent.
delta = 1 if sidebar.canvas._windowingsystem == 'aqua' else 120
# Scroll up.
if sidebar.canvas._windowingsystem == 'x11':
sidebar.canvas.event_generate('<Button-4>', x=0, y=0)
else:
sidebar.canvas.event_generate('<MouseWheel>', x=0, y=0, delta=delta)
yield
self.assertIsNone(text.dlineinfo(text.index(f'{last_lineno}.0')))
# Scroll back down.
if sidebar.canvas._windowingsystem == 'x11':
sidebar.canvas.event_generate('<Button-5>', x=0, y=0)
else:
sidebar.canvas.event_generate('<MouseWheel>', x=0, y=0, delta=-delta)
yield
self.assertIsNotNone(text.dlineinfo(text.index(f'{last_lineno}.0')))
@run_in_tk_mainloop()
def test_copy(self):
sidebar = self.shell.shell_sidebar
text = self.shell.text
first_line = get_end_linenumber(text)
self.do_input(dedent('''\
if True:
print(1)
'''))
yield
text.tag_add('sel', f'{first_line}.0', 'end-1c')
selected_text = text.get('sel.first', 'sel.last')
self.assertTrue(selected_text.startswith('if True:\n'))
self.assertIn('\n1\n', selected_text)
text.event_generate('<<copy>>')
self.addCleanup(text.clipboard_clear)
copied_text = text.clipboard_get()
self.assertEqual(copied_text, selected_text)
@run_in_tk_mainloop()
def test_copy_with_prompts(self):
sidebar = self.shell.shell_sidebar
text = self.shell.text
first_line = get_end_linenumber(text)
self.do_input(dedent('''\
if True:
print(1)
'''))
yield
text.tag_add('sel', f'{first_line}.3', 'end-1c')
selected_text = text.get('sel.first', 'sel.last')
self.assertTrue(selected_text.startswith('True:\n'))
selected_lines_text = text.get('sel.first linestart', 'sel.last')
selected_lines = selected_lines_text.split('\n')
selected_lines.pop() # Final '' is a split artifact, not a line.
# Expect a block of input and a single output line.
expected_prompts = \
['>>>'] + ['...'] * (len(selected_lines) - 2) + [None]
selected_text_with_prompts = '\n'.join(
line if prompt is None else prompt + ' ' + line
for prompt, line in zip(expected_prompts,
selected_lines,
strict=True)
) + '\n'
text.event_generate('<<copy-with-prompts>>')
self.addCleanup(text.clipboard_clear)
copied_text = text.clipboard_get()
self.assertEqual(copied_text, selected_text_with_prompts)
if __name__ == '__main__':
unittest.main(verbosity=2)