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273 lines
8.8 KiB
Python
273 lines
8.8 KiB
Python
"""Unittest for idlelib.HyperParser"""
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import unittest
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from test.support import requires
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from tkinter import Tk, Text
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from idlelib.EditorWindow import EditorWindow
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from idlelib.HyperParser import HyperParser
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class DummyEditwin:
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def __init__(self, text):
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self.text = text
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self.indentwidth = 8
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self.tabwidth = 8
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self.context_use_ps1 = True
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self.num_context_lines = 50, 500, 1000
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_build_char_in_string_func = EditorWindow._build_char_in_string_func
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is_char_in_string = EditorWindow.is_char_in_string
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class HyperParserTest(unittest.TestCase):
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code = (
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'"""This is a module docstring"""\n'
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'# this line is a comment\n'
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'x = "this is a string"\n'
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"y = 'this is also a string'\n"
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'l = [i for i in range(10)]\n'
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'm = [py*py for # comment\n'
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' py in l]\n'
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'x.__len__\n'
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"z = ((r'asdf')+('a')))\n"
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'[x for x in\n'
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'for = False\n'
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'cliché = "this is a string with unicode, what a cliché"'
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)
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@classmethod
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def setUpClass(cls):
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requires('gui')
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cls.root = Tk()
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cls.text = Text(cls.root)
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cls.editwin = DummyEditwin(cls.text)
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@classmethod
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def tearDownClass(cls):
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del cls.text, cls.editwin
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cls.root.destroy()
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del cls.root
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def setUp(self):
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self.text.insert('insert', self.code)
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def tearDown(self):
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self.text.delete('1.0', 'end')
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self.editwin.context_use_ps1 = True
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def get_parser(self, index):
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"""
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Return a parser object with index at 'index'
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"""
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return HyperParser(self.editwin, index)
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def test_init(self):
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"""
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test corner cases in the init method
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"""
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with self.assertRaises(ValueError) as ve:
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self.text.tag_add('console', '1.0', '1.end')
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p = self.get_parser('1.5')
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self.assertIn('precedes', str(ve.exception))
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# test without ps1
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self.editwin.context_use_ps1 = False
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# number of lines lesser than 50
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p = self.get_parser('end')
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self.assertEqual(p.rawtext, self.text.get('1.0', 'end'))
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# number of lines greater than 50
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self.text.insert('end', self.text.get('1.0', 'end')*4)
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p = self.get_parser('54.5')
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def test_is_in_string(self):
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get = self.get_parser
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p = get('1.0')
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self.assertFalse(p.is_in_string())
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p = get('1.4')
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self.assertTrue(p.is_in_string())
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p = get('2.3')
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self.assertFalse(p.is_in_string())
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p = get('3.3')
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self.assertFalse(p.is_in_string())
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p = get('3.7')
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self.assertTrue(p.is_in_string())
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p = get('4.6')
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self.assertTrue(p.is_in_string())
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p = get('12.54')
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self.assertTrue(p.is_in_string())
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def test_is_in_code(self):
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get = self.get_parser
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p = get('1.0')
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self.assertTrue(p.is_in_code())
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p = get('1.1')
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self.assertFalse(p.is_in_code())
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p = get('2.5')
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self.assertFalse(p.is_in_code())
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p = get('3.4')
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self.assertTrue(p.is_in_code())
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p = get('3.6')
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self.assertFalse(p.is_in_code())
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p = get('4.14')
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self.assertFalse(p.is_in_code())
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def test_get_surrounding_bracket(self):
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get = self.get_parser
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def without_mustclose(parser):
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# a utility function to get surrounding bracket
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# with mustclose=False
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return parser.get_surrounding_brackets(mustclose=False)
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def with_mustclose(parser):
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# a utility function to get surrounding bracket
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# with mustclose=True
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return parser.get_surrounding_brackets(mustclose=True)
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p = get('3.2')
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self.assertIsNone(with_mustclose(p))
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self.assertIsNone(without_mustclose(p))
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p = get('5.6')
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self.assertTupleEqual(without_mustclose(p), ('5.4', '5.25'))
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self.assertTupleEqual(without_mustclose(p), with_mustclose(p))
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p = get('5.23')
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self.assertTupleEqual(without_mustclose(p), ('5.21', '5.24'))
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self.assertTupleEqual(without_mustclose(p), with_mustclose(p))
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p = get('6.15')
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self.assertTupleEqual(without_mustclose(p), ('6.4', '6.end'))
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self.assertIsNone(with_mustclose(p))
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p = get('9.end')
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self.assertIsNone(with_mustclose(p))
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self.assertIsNone(without_mustclose(p))
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def test_get_expression(self):
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get = self.get_parser
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p = get('4.2')
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self.assertEqual(p.get_expression(), 'y ')
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p = get('4.7')
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with self.assertRaises(ValueError) as ve:
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p.get_expression()
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self.assertIn('is inside a code', str(ve.exception))
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p = get('5.25')
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self.assertEqual(p.get_expression(), 'range(10)')
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p = get('6.7')
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self.assertEqual(p.get_expression(), 'py')
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p = get('6.8')
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self.assertEqual(p.get_expression(), '')
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p = get('7.9')
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self.assertEqual(p.get_expression(), 'py')
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p = get('8.end')
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self.assertEqual(p.get_expression(), 'x.__len__')
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p = get('9.13')
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self.assertEqual(p.get_expression(), "r'asdf'")
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p = get('9.17')
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with self.assertRaises(ValueError) as ve:
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p.get_expression()
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self.assertIn('is inside a code', str(ve.exception))
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p = get('10.0')
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self.assertEqual(p.get_expression(), '')
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p = get('10.6')
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self.assertEqual(p.get_expression(), '')
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p = get('10.11')
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self.assertEqual(p.get_expression(), '')
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p = get('11.3')
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self.assertEqual(p.get_expression(), '')
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p = get('11.11')
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self.assertEqual(p.get_expression(), 'False')
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p = get('12.6')
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self.assertEqual(p.get_expression(), 'cliché')
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def test_eat_identifier(self):
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def is_valid_id(candidate):
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result = HyperParser._eat_identifier(candidate, 0, len(candidate))
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if result == len(candidate):
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return True
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elif result == 0:
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return False
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else:
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err_msg = "Unexpected result: {} (expected 0 or {}".format(
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result, len(candidate)
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)
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raise Exception(err_msg)
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# invalid first character which is valid elsewhere in an identifier
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self.assertFalse(is_valid_id('2notid'))
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# ASCII-only valid identifiers
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self.assertTrue(is_valid_id('valid_id'))
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self.assertTrue(is_valid_id('_valid_id'))
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self.assertTrue(is_valid_id('valid_id_'))
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self.assertTrue(is_valid_id('_2valid_id'))
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# keywords which should be "eaten"
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self.assertTrue(is_valid_id('True'))
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self.assertTrue(is_valid_id('False'))
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self.assertTrue(is_valid_id('None'))
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# keywords which should not be "eaten"
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self.assertFalse(is_valid_id('for'))
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self.assertFalse(is_valid_id('import'))
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self.assertFalse(is_valid_id('return'))
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# valid unicode identifiers
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self.assertTrue(is_valid_id('cliche'))
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self.assertTrue(is_valid_id('cliché'))
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self.assertTrue(is_valid_id('a٢'))
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# invalid unicode identifiers
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self.assertFalse(is_valid_id('2a'))
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self.assertFalse(is_valid_id('٢a'))
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self.assertFalse(is_valid_id('a²'))
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# valid identifier after "punctuation"
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self.assertEqual(HyperParser._eat_identifier('+ var', 0, 5), len('var'))
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self.assertEqual(HyperParser._eat_identifier('+var', 0, 4), len('var'))
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self.assertEqual(HyperParser._eat_identifier('.var', 0, 4), len('var'))
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# invalid identifiers
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self.assertFalse(is_valid_id('+'))
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self.assertFalse(is_valid_id(' '))
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self.assertFalse(is_valid_id(':'))
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self.assertFalse(is_valid_id('?'))
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self.assertFalse(is_valid_id('^'))
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self.assertFalse(is_valid_id('\\'))
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self.assertFalse(is_valid_id('"'))
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self.assertFalse(is_valid_id('"a string"'))
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def test_eat_identifier_various_lengths(self):
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eat_id = HyperParser._eat_identifier
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for length in range(1, 21):
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self.assertEqual(eat_id('a' * length, 0, length), length)
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self.assertEqual(eat_id('é' * length, 0, length), length)
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self.assertEqual(eat_id('a' + '2' * (length - 1), 0, length), length)
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self.assertEqual(eat_id('é' + '2' * (length - 1), 0, length), length)
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self.assertEqual(eat_id('é' + 'a' * (length - 1), 0, length), length)
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self.assertEqual(eat_id('é' * (length - 1) + 'a', 0, length), length)
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self.assertEqual(eat_id('+' * length, 0, length), 0)
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self.assertEqual(eat_id('2' + 'a' * (length - 1), 0, length), 0)
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self.assertEqual(eat_id('2' + 'é' * (length - 1), 0, length), 0)
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if __name__ == '__main__':
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unittest.main(verbosity=2)
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