"""Test sidebar, coverage 93%"""
import idlelib.sidebar
from itertools import chain
import unittest
import unittest.mock
from test.support import requires
import tkinter as tk
from idlelib.delegator import Delegator
from idlelib.percolator import Percolator
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.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()
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()
# Note: 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()
# Note: 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)
# Note: 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)
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()
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'))
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-dependant, 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 code context.
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)
if __name__ == '__main__':
unittest.main(verbosity=2)