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"Test codecontext, coverage 100%"
from idlelib import codecontext
import unittest
from test.support import requires
from tkinter import Tk, Frame, Text, TclError
from unittest import mock
import re
from idlelib import config
usercfg = codecontext.idleConf.userCfg
testcfg = {
'main': config.IdleUserConfParser(''),
'highlight': config.IdleUserConfParser(''),
'keys': config.IdleUserConfParser(''),
'extensions': config.IdleUserConfParser(''),
}
code_sample = """\
class C1():
# Class comment.
def __init__(self, a, b):
self.a = a
self.b = b
def compare(self):
if a > b:
return a
elif a < b:
return b
else:
return None
"""
class DummyEditwin:
def __init__(self, root, frame, text):
self.root = root
self.top = root
self.text_frame = frame
self.text = text
class CodeContextTest(unittest.TestCase):
@classmethod
def setUpClass(cls):
requires('gui')
root = cls.root = Tk()
root.withdraw()
frame = cls.frame = Frame(root)
text = cls.text = Text(frame)
text.insert('1.0', code_sample)
# Need to pack for creation of code context text widget.
frame.pack(side='left', fill='both', expand=1)
text.pack(side='top', fill='both', expand=1)
cls.editor = DummyEditwin(root, frame, text)
codecontext.idleConf.userCfg = testcfg
@classmethod
def tearDownClass(cls):
codecontext.idleConf.userCfg = usercfg
cls.editor.text.delete('1.0', 'end')
del cls.editor, cls.frame, cls.text
cls.root.update_idletasks()
cls.root.destroy()
del cls.root
def setUp(self):
self.text.yview(0)
self.cc = codecontext.CodeContext(self.editor)
def tearDown(self):
if self.cc.context:
self.cc.context.destroy()
# Explicitly call __del__ to remove scheduled scripts.
self.cc.__del__()
del self.cc.context, self.cc
def test_init(self):
eq = self.assertEqual
ed = self.editor
cc = self.cc
eq(cc.editwin, ed)
eq(cc.text, ed.text)
eq(cc.textfont, ed.text['font'])
self.assertIsNone(cc.context)
eq(cc.info, [(0, -1, '', False)])
eq(cc.topvisible, 1)
eq(self.root.tk.call('after', 'info', self.cc.t1)[1], 'timer')
eq(self.root.tk.call('after', 'info', self.cc.t2)[1], 'timer')
def test_del(self):
self.cc.__del__()
with self.assertRaises(TclError) as msg:
self.root.tk.call('after', 'info', self.cc.t1)
self.assertIn("doesn't exist", msg)
with self.assertRaises(TclError) as msg:
self.root.tk.call('after', 'info', self.cc.t2)
self.assertIn("doesn't exist", msg)
# For coverage on the except. Have to delete because the
# above Tcl error is caught by after_cancel.
del self.cc.t1, self.cc.t2
self.cc.__del__()
def test_reload(self):
codecontext.CodeContext.reload()
self.assertEqual(self.cc.colors, {'background': 'lightgray',
'foreground': '#000000'})
self.assertEqual(self.cc.context_depth, 15)
def test_toggle_code_context_event(self):
eq = self.assertEqual
cc = self.cc
toggle = cc.toggle_code_context_event
# Make sure code context is off.
if cc.context:
toggle()
# Toggle on.
eq(toggle(), 'break')
self.assertIsNotNone(cc.context)
eq(cc.context['font'], cc.textfont)
eq(cc.context['fg'], cc.colors['foreground'])
eq(cc.context['bg'], cc.colors['background'])
eq(cc.context.get('1.0', 'end-1c'), '')
# Toggle off.
eq(toggle(), 'break')
self.assertIsNone(cc.context)
def test_get_context(self):
eq = self.assertEqual
gc = self.cc.get_context
# stopline must be greater than 0.
with self.assertRaises(AssertionError):
gc(1, stopline=0)
eq(gc(3), ([(2, 0, 'class C1():', 'class')], 0))
# Don't return comment.
eq(gc(4), ([(2, 0, 'class C1():', 'class')], 0))
# Two indentation levels and no comment.
eq(gc(5), ([(2, 0, 'class C1():', 'class'),
(4, 4, ' def __init__(self, a, b):', 'def')], 0))
# Only one 'def' is returned, not both at the same indent level.
eq(gc(10), ([(2, 0, 'class C1():', 'class'),
(7, 4, ' def compare(self):', 'def'),
(8, 8, ' if a > b:', 'if')], 0))
# With 'elif', also show the 'if' even though it's at the same level.
eq(gc(11), ([(2, 0, 'class C1():', 'class'),
(7, 4, ' def compare(self):', 'def'),
(8, 8, ' if a > b:', 'if'),
(10, 8, ' elif a < b:', 'elif')], 0))
# Set stop_line to not go back to first line in source code.
# Return includes stop_line.
eq(gc(11, stopline=2), ([(2, 0, 'class C1():', 'class'),
(7, 4, ' def compare(self):', 'def'),
(8, 8, ' if a > b:', 'if'),
(10, 8, ' elif a < b:', 'elif')], 0))
eq(gc(11, stopline=3), ([(7, 4, ' def compare(self):', 'def'),
(8, 8, ' if a > b:', 'if'),
(10, 8, ' elif a < b:', 'elif')], 4))
eq(gc(11, stopline=8), ([(8, 8, ' if a > b:', 'if'),
(10, 8, ' elif a < b:', 'elif')], 8))
# Set stop_indent to test indent level to stop at.
eq(gc(11, stopindent=4), ([(7, 4, ' def compare(self):', 'def'),
(8, 8, ' if a > b:', 'if'),
(10, 8, ' elif a < b:', 'elif')], 4))
# Check that the 'if' is included.
eq(gc(11, stopindent=8), ([(8, 8, ' if a > b:', 'if'),
(10, 8, ' elif a < b:', 'elif')], 8))
def test_update_code_context(self):
eq = self.assertEqual
cc = self.cc
# Ensure code context is active.
if not cc.context:
cc.toggle_code_context_event()
# Invoke update_code_context without scrolling - nothing happens.
self.assertIsNone(cc.update_code_context())
eq(cc.info, [(0, -1, '', False)])
eq(cc.topvisible, 1)
# Scroll down to line 1.
cc.text.yview(1)
cc.update_code_context()
eq(cc.info, [(0, -1, '', False)])
eq(cc.topvisible, 2)
eq(cc.context.get('1.0', 'end-1c'), '')
# Scroll down to line 2.
cc.text.yview(2)
cc.update_code_context()
eq(cc.info, [(0, -1, '', False), (2, 0, 'class C1():', 'class')])
eq(cc.topvisible, 3)
eq(cc.context.get('1.0', 'end-1c'), 'class C1():')
# Scroll down to line 3. Since it's a comment, nothing changes.
cc.text.yview(3)
cc.update_code_context()
eq(cc.info, [(0, -1, '', False), (2, 0, 'class C1():', 'class')])
eq(cc.topvisible, 4)
eq(cc.context.get('1.0', 'end-1c'), 'class C1():')
# Scroll down to line 4.
cc.text.yview(4)
cc.update_code_context()
eq(cc.info, [(0, -1, '', False),
(2, 0, 'class C1():', 'class'),
(4, 4, ' def __init__(self, a, b):', 'def')])
eq(cc.topvisible, 5)
eq(cc.context.get('1.0', 'end-1c'), 'class C1():\n'
' def __init__(self, a, b):')
# Scroll down to line 11. Last 'def' is removed.
cc.text.yview(11)
cc.update_code_context()
eq(cc.info, [(0, -1, '', False),
(2, 0, 'class C1():', 'class'),
(7, 4, ' def compare(self):', 'def'),
(8, 8, ' if a > b:', 'if'),
(10, 8, ' elif a < b:', 'elif')])
eq(cc.topvisible, 12)
eq(cc.context.get('1.0', 'end-1c'), 'class C1():\n'
' def compare(self):\n'
' if a > b:\n'
' elif a < b:')
# No scroll. No update, even though context_depth changed.
cc.update_code_context()
cc.context_depth = 1
eq(cc.info, [(0, -1, '', False),
(2, 0, 'class C1():', 'class'),
(7, 4, ' def compare(self):', 'def'),
(8, 8, ' if a > b:', 'if'),
(10, 8, ' elif a < b:', 'elif')])
eq(cc.topvisible, 12)
eq(cc.context.get('1.0', 'end-1c'), 'class C1():\n'
' def compare(self):\n'
' if a > b:\n'
' elif a < b:')
# Scroll up.
cc.text.yview(5)
cc.update_code_context()
eq(cc.info, [(0, -1, '', False),
(2, 0, 'class C1():', 'class'),
(4, 4, ' def __init__(self, a, b):', 'def')])
eq(cc.topvisible, 6)
# context_depth is 1.
eq(cc.context.get('1.0', 'end-1c'), ' def __init__(self, a, b):')
def test_jumptoline(self):
eq = self.assertEqual
cc = self.cc
jump = cc.jumptoline
if not cc.context:
cc.toggle_code_context_event()
# Empty context.
cc.text.yview(f'{2}.0')
cc.update_code_context()
eq(cc.topvisible, 2)
cc.context.mark_set('insert', '1.5')
jump()
eq(cc.topvisible, 1)
# 4 lines of context showing.
cc.text.yview(f'{12}.0')
cc.update_code_context()
eq(cc.topvisible, 12)
cc.context.mark_set('insert', '3.0')
jump()
eq(cc.topvisible, 8)
# More context lines than limit.
cc.context_depth = 2
cc.text.yview(f'{12}.0')
cc.update_code_context()
eq(cc.topvisible, 12)
cc.context.mark_set('insert', '1.0')
jump()
eq(cc.topvisible, 8)
@mock.patch.object(codecontext.CodeContext, 'update_code_context')
def test_timer_event(self, mock_update):
# Ensure code context is not active.
if self.cc.context:
self.cc.toggle_code_context_event()
self.cc.timer_event()
mock_update.assert_not_called()
# Activate code context.
self.cc.toggle_code_context_event()
self.cc.timer_event()
mock_update.assert_called()
def test_config_timer_event(self):
eq = self.assertEqual
cc = self.cc
save_font = cc.text['font']
save_colors = codecontext.CodeContext.colors
test_font = 'FakeFont'
test_colors = {'background': '#222222', 'foreground': '#ffff00'}
# Ensure code context is not active.
if cc.context:
cc.toggle_code_context_event()
# Nothing updates on inactive code context.
cc.text['font'] = test_font
codecontext.CodeContext.colors = test_colors
cc.config_timer_event()
eq(cc.textfont, save_font)
eq(cc.contextcolors, save_colors)
# Activate code context, but no change to font or color.
cc.toggle_code_context_event()
cc.text['font'] = save_font
codecontext.CodeContext.colors = save_colors
cc.config_timer_event()
eq(cc.textfont, save_font)
eq(cc.contextcolors, save_colors)
eq(cc.context['font'], save_font)
eq(cc.context['background'], save_colors['background'])
eq(cc.context['foreground'], save_colors['foreground'])
# Active code context, change font.
cc.text['font'] = test_font
cc.config_timer_event()
eq(cc.textfont, test_font)
eq(cc.contextcolors, save_colors)
eq(cc.context['font'], test_font)
eq(cc.context['background'], save_colors['background'])
eq(cc.context['foreground'], save_colors['foreground'])
# Active code context, change color.
cc.text['font'] = save_font
codecontext.CodeContext.colors = test_colors
cc.config_timer_event()
eq(cc.textfont, save_font)
eq(cc.contextcolors, test_colors)
eq(cc.context['font'], save_font)
eq(cc.context['background'], test_colors['background'])
eq(cc.context['foreground'], test_colors['foreground'])
codecontext.CodeContext.colors = save_colors
cc.config_timer_event()
class HelperFunctionText(unittest.TestCase):
def test_get_spaces_firstword(self):
get = codecontext.get_spaces_firstword
test_lines = (
(' first word', (' ', 'first')),
('\tfirst word', ('\t', 'first')),
(' \u19D4\u19D2: ', (' ', '\u19D4\u19D2')),
('no spaces', ('', 'no')),
('', ('', '')),
('# TEST COMMENT', ('', '')),
(' (continuation)', (' ', ''))
)
for line, expected_output in test_lines:
self.assertEqual(get(line), expected_output)
# Send the pattern in the call.
self.assertEqual(get(' (continuation)',
c=re.compile(r'^(\s*)([^\s]*)')),
(' ', '(continuation)'))
def test_get_line_info(self):
eq = self.assertEqual
gli = codecontext.get_line_info
lines = code_sample.splitlines()
# Line 1 is not a BLOCKOPENER.
eq(gli(lines[0]), (codecontext.INFINITY, '', False))
# Line 2 is a BLOCKOPENER without an indent.
eq(gli(lines[1]), (0, 'class C1():', 'class'))
# Line 3 is not a BLOCKOPENER and does not return the indent level.
eq(gli(lines[2]), (codecontext.INFINITY, ' # Class comment.', False))
# Line 4 is a BLOCKOPENER and is indented.
eq(gli(lines[3]), (4, ' def __init__(self, a, b):', 'def'))
# Line 8 is a different BLOCKOPENER and is indented.
eq(gli(lines[7]), (8, ' if a > b:', 'if'))
# Test tab.
eq(gli('\tif a == b:'), (1, '\tif a == b:', 'if'))
if __name__ == '__main__':
unittest.main(verbosity=2)
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