def test_range_in_brackets(self):
regex = PythonRegex("a[a-z]")
self.assertTrue(regex.accepts(["a", "a"]))
self.assertTrue(regex.accepts(["a", "c"]))
self.assertTrue(regex.accepts(["a", "g"]))
self.assertTrue(regex.accepts(["a", "z"]))
self.assertFalse(regex.accepts(["a", "b", "c"]))
self.assertFalse(regex.accepts(["a", "A"]))
def test_range_in_brackets_trap(self):
regex = PythonRegex("a[a-e-z]")
self.assertTrue(regex.accepts(["a", "a"]))
self.assertTrue(regex.accepts(["a", "c"]))
self.assertTrue(regex.accepts(["a", "z"]))
self.assertTrue(regex.accepts(["a", "-"]))
self.assertFalse(regex.accepts(["a", "y"]))
self.assertFalse(regex.accepts(["a", "f"]))
def test_dot(self):
regex = PythonRegex("a.")
self.assertTrue(regex.accepts(["a", "b"]))
self.assertTrue(regex.accepts(["a", "?"]))
self.assertFalse(regex.accepts(["a", "\n"]))
self.assertFalse(regex.accepts(["a"]))
self.assertTrue(regex.accepts(["a", "|"]))
self.assertTrue(regex.accepts(["a", "("]))
self.assertTrue(regex.accepts(["a", ")"]))
self.assertTrue(regex.accepts(["a", "."]))
self.assertTrue(regex.accepts(["a", "*"]))
self.assertTrue(regex.accepts(["a", "+"]))
self.assertTrue(regex.accepts(["a", "$"]))
def test_special_in_brackets_kleene_star(self):
regex = PythonRegex(r"a[a*]")
self.assertTrue(regex.accepts(["a", "a"]))
self.assertTrue(regex.accepts(["a", "*"]))
self.assertFalse(regex.accepts(["a", "a", "a"]))
def test_shortcut_word(self):
regex = PythonRegex(r"a\w")
self.assertTrue(regex.accepts(["a", "0"]))
self.assertTrue(regex.accepts(["a", "_"]))
self.assertTrue(regex.accepts(["a", "A"]))
self.assertTrue(regex.accepts(["a", "f"]))
def test_escape_backslash_plus(self):
regex = PythonRegex(r"a\\+")
self.assertTrue(regex.accepts(["a", "\\", "\\"]))
def test_escape_closing_bracket(self):
regex = PythonRegex(r"a\]")
self.assertTrue(regex.accepts(["a", "]"]))
def test_space(self):
regex = PythonRegex(" ")
self.assertTrue(regex.accepts([" "]))
def test_with_parenthesis_optional(self):
regex = PythonRegex("a(bb|c)?")
self.assertTrue(regex.accepts(["a"]))
self.assertTrue(regex.accepts(["a", "b", "b"]))
self.assertTrue(regex.accepts(["a", "c"]))
self.assertFalse(regex.accepts(["a", "b"]))
def test_escape_kleene_star(self):
regex = PythonRegex(r"ab\*")
self.assertTrue(regex.accepts(["a", "b", "*"]))
def test_plus(self):
regex = PythonRegex("a+")
self.assertFalse(regex.accepts([]))
self.assertTrue(regex.accepts(["a"]))
self.assertTrue(regex.accepts(["a", "a"]))
def test_dot_spaces(self):
regex = PythonRegex("a.")
self.assertTrue(regex.accepts(["a", " "]))
self.assertTrue(regex.accepts(["a", "\t"]))
self.assertTrue(regex.accepts(["a", "\v"]))
self.assertTrue(regex.accepts(["a", "\r"]))
def test_special_in_brackets_closing_parenthesis(self):
regex = PythonRegex(r"a[a)]")
self.assertTrue(regex.accepts(["a", "a"]))
self.assertTrue(regex.accepts(["a", ")"]))
def test_range_in_brackets_trap2_bis(self):
regex = PythonRegex(re.compile("[a-e-g-z]*"))
self.assertTrue(regex.accepts(["a", "-", "y"]))
def test_with_brackets(self):
regex = PythonRegex("a[bc]")
self.assertTrue(regex.accepts(["a", "b"]))
self.assertTrue(regex.accepts(["a", "c"]))
self.assertFalse(regex.accepts(["a", "b", "c"]))
self.assertFalse(regex.accepts(["a", "a"]))
def test_escape_dash_in_brackets(self):
regex = PythonRegex(r"a[a\-]")
self.assertTrue(regex.accepts(["a", "a"]))
self.assertTrue(regex.accepts(["a", "-"]))
def test_escape_backslash_question_mark(self):
regex = PythonRegex(r"a\\?")
self.assertTrue(regex.accepts(["a"]))
self.assertTrue(regex.accepts(["a", "\\"]))
self.assertFalse(regex.accepts(["a", "\\", "?"]))
self.assertFalse(regex.accepts(["a", "\\?"]))
def test_escape_backslash_closing_bracket(self):
regex = PythonRegex(r"a[ab\\]")
self.assertTrue(regex.accepts(["a", "a"]))
self.assertTrue(regex.accepts(["a", "b"]))
self.assertTrue(regex.accepts(["a", "\\"]))
def test_escape_backslash_opening_bracket(self):
regex = PythonRegex(r"a\\[ab]")
self.assertTrue(regex.accepts(["a", "\\", "a"]))
self.assertTrue(regex.accepts(["a", "\\", "b"]))
def test_parenthesis(self):
regex = PythonRegex("((a)|(b))+")
self.assertTrue(regex.accepts(["a", "b"]))
def test_special_in_brackets_positive_closure(self):
regex = PythonRegex(r"a[a+]")
self.assertTrue(regex.accepts(["a", "a"]))
self.assertTrue(regex.accepts(["a", "+"]))
self.assertFalse(regex.accepts(["a", "a", "a"]))
def test_special_in_brackets_optional(self):
regex = PythonRegex(r"a[a?]")
self.assertTrue(regex.accepts(["a", "a"]))
self.assertTrue(regex.accepts(["a", "?"]))
self.assertFalse(regex.accepts(["a"]))
def test_shortcut_digits(self):
regex = PythonRegex(r"a\d")
self.assertTrue(regex.accepts(["a", "0"]))
self.assertTrue(regex.accepts(["a", "1"]))
def test_simple_optional(self):
regex = PythonRegex("ab?")
self.assertTrue(regex.accepts(["a"]))
self.assertTrue(regex.accepts(["a", "b"]))
self.assertFalse(regex.accepts(["a", "a"]))
def test_shortcut_digits_in_brackets(self):
regex = PythonRegex(r"a[\da]")
self.assertTrue(regex.accepts(["a", "0"]))
self.assertTrue(regex.accepts(["a", "1"]))
self.assertTrue(regex.accepts(["a", "a"]))
def test_escape_question_mark(self):
regex = PythonRegex(r"ab\?")
self.assertTrue(regex.accepts(["a", "b", "?"]))
def test_shortcut_spaces(self):
regex = PythonRegex(r"a\s")
self.assertTrue(regex.accepts(["a", " "]))
self.assertTrue(regex.accepts(["a", "\t"]))
def test_escape_plus(self):
regex = PythonRegex(r"ab\+")
self.assertTrue(regex.accepts(["a", "b", "+"]))
self.assertFalse(regex.accepts(["a", "b", "\\"]))
def test_escape_opening_bracket(self):
regex = PythonRegex(r"a\[")
self.assertTrue(regex.accepts(["a", "["]))