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Viewing File: test_hyperparser.py
"""Unittest for idlelib.HyperParser"""
import unittest
from test.test_support import requires
from Tkinter import Tk, Text
from idlelib.EditorWindow import EditorWindow
from idlelib.HyperParser import HyperParser
class DummyEditwin:
def __init__(self, text):
self.text = text
self.indentwidth = 8
self.tabwidth = 8
self.context_use_ps1 = True
self.num_context_lines = 50, 500, 1000
_build_char_in_string_func = EditorWindow._build_char_in_string_func.im_func
is_char_in_string = EditorWindow.is_char_in_string.im_func
class HyperParserTest(unittest.TestCase):
code = (
'"""This is a module docstring"""\n'
'# this line is a comment\n'
'x = "this is a string"\n'
"y = 'this is also a string'\n"
'l = [i for i in range(10)]\n'
'm = [py*py for # comment\n'
' py in l]\n'
'x.__len__\n'
"z = ((r'asdf')+('a')))\n"
'[x for x in\n'
'for = False\n'
)
@classmethod
def setUpClass(cls):
requires('gui')
cls.root = Tk()
cls.root.withdraw()
cls.text = Text(cls.root)
cls.editwin = DummyEditwin(cls.text)
@classmethod
def tearDownClass(cls):
del cls.text, cls.editwin
cls.root.destroy()
del cls.root
def setUp(self):
self.text.insert('insert', self.code)
def tearDown(self):
self.text.delete('1.0', 'end')
self.editwin.context_use_ps1 = True
def get_parser(self, index):
"""
Return a parser object with index at 'index'
"""
return HyperParser(self.editwin, index)
def test_init(self):
"""
test corner cases in the init method
"""
with self.assertRaises(ValueError) as ve:
self.text.tag_add('console', '1.0', '1.end')
p = self.get_parser('1.5')
self.assertIn('precedes', str(ve.exception))
# test without ps1
self.editwin.context_use_ps1 = False
# number of lines lesser than 50
p = self.get_parser('end')
self.assertEqual(p.rawtext, self.text.get('1.0', 'end'))
# number of lines greater than 50
self.text.insert('end', self.text.get('1.0', 'end')*4)
p = self.get_parser('54.5')
def test_is_in_string(self):
get = self.get_parser
p = get('1.0')
self.assertFalse(p.is_in_string())
p = get('1.4')
self.assertTrue(p.is_in_string())
p = get('2.3')
self.assertFalse(p.is_in_string())
p = get('3.3')
self.assertFalse(p.is_in_string())
p = get('3.7')
self.assertTrue(p.is_in_string())
p = get('4.6')
self.assertTrue(p.is_in_string())
def test_is_in_code(self):
get = self.get_parser
p = get('1.0')
self.assertTrue(p.is_in_code())
p = get('1.1')
self.assertFalse(p.is_in_code())
p = get('2.5')
self.assertFalse(p.is_in_code())
p = get('3.4')
self.assertTrue(p.is_in_code())
p = get('3.6')
self.assertFalse(p.is_in_code())
p = get('4.14')
self.assertFalse(p.is_in_code())
def test_get_surrounding_bracket(self):
get = self.get_parser
def without_mustclose(parser):
# a utility function to get surrounding bracket
# with mustclose=False
return parser.get_surrounding_brackets(mustclose=False)
def with_mustclose(parser):
# a utility function to get surrounding bracket
# with mustclose=True
return parser.get_surrounding_brackets(mustclose=True)
p = get('3.2')
self.assertIsNone(with_mustclose(p))
self.assertIsNone(without_mustclose(p))
p = get('5.6')
self.assertTupleEqual(without_mustclose(p), ('5.4', '5.25'))
self.assertTupleEqual(without_mustclose(p), with_mustclose(p))
p = get('5.23')
self.assertTupleEqual(without_mustclose(p), ('5.21', '5.24'))
self.assertTupleEqual(without_mustclose(p), with_mustclose(p))
p = get('6.15')
self.assertTupleEqual(without_mustclose(p), ('6.4', '6.end'))
self.assertIsNone(with_mustclose(p))
p = get('9.end')
self.assertIsNone(with_mustclose(p))
self.assertIsNone(without_mustclose(p))
def test_get_expression(self):
get = self.get_parser
p = get('4.2')
self.assertEqual(p.get_expression(), 'y ')
p = get('4.7')
with self.assertRaises(ValueError) as ve:
p.get_expression()
self.assertIn('is inside a code', str(ve.exception))
p = get('5.25')
self.assertEqual(p.get_expression(), 'range(10)')
p = get('6.7')
self.assertEqual(p.get_expression(), 'py')
p = get('6.8')
self.assertEqual(p.get_expression(), '')
p = get('7.9')
self.assertEqual(p.get_expression(), 'py')
p = get('8.end')
self.assertEqual(p.get_expression(), 'x.__len__')
p = get('9.13')
self.assertEqual(p.get_expression(), "r'asdf'")
p = get('9.17')
with self.assertRaises(ValueError) as ve:
p.get_expression()
self.assertIn('is inside a code', str(ve.exception))
p = get('10.0')
self.assertEqual(p.get_expression(), '')
p = get('11.3')
self.assertEqual(p.get_expression(), '')
p = get('11.11')
self.assertEqual(p.get_expression(), 'False')
if __name__ == '__main__':
unittest.main(verbosity=2)
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