# Path: graphviz/quoting.py
# HTML_STRING = re.compile(r'<.*>$', re.DOTALL)
# ID = re.compile(r'([a-zA-Z_][a-zA-Z0-9_]*|-?(\.[0-9]+|[0-9]+(\.[0-9]*)?))$')
# KEYWORDS = {'node', 'edge', 'graph', 'digraph', 'subgraph', 'strict'}
# COMPASS = {'n', 'ne', 'e', 'se', 's', 'sw', 'w', 'nw', 'c', '_'}  # TODO
# QUOTE_OPTIONAL_BACKSLASHES = re.compile(r'(?P<bs>(?:\\\\)*)'
#                                         r'\\?(?P<quote>")')
# ESCAPE_UNESCAPED_QUOTES = functools.partial(QUOTE_OPTIONAL_BACKSLASHES.sub,
#                                             r'\g<bs>\\\g<quote>')
# def quote(identifier: str,
#           is_html_string=HTML_STRING.match,
#           is_valid_id=ID.match,
#           dot_keywords=KEYWORDS,
#           escape_unescaped_quotes=ESCAPE_UNESCAPED_QUOTES) -> str:
# def quote_edge(identifier: str) -> str:
# def a_list(label: typing.Optional[str] = None,
#            kwargs=None, attributes=None) -> str:
# def attr_list(label: typing.Optional[str] = None,
#               kwargs=None, attributes=None) -> str:
# def escape(s: str) -> str:
# def nohtml(s: str) -> str:
# class Quote:
# class NoHtml(str):


import warnings
import pytest
import graphviz
from graphviz import quoting
    'char', ['G', 'E', 'T', 'H', 'L', 'l'])
def test_deprecated_escape(recwarn, char):
    warnings.simplefilter('always')

    escape = eval(rf'"\{char}"')

    assert len(recwarn) == 1
    w = recwarn.pop(DeprecationWarning)
    assert str(w.message).startswith('invalid escape sequence')

    assert escape == f'\\{char}'
    assert quoting.quote(escape) == f'"\\{char}"'


@pytest.mark.parametrize(
    'identifier, expected',
    [('"spam"', r'"\"spam\""'),
     ('node', '"node"'),
     ('EDGE', '"EDGE"'),
     ('Graph', '"Graph"'),
     ('\\G \\N \\E \\T \\H \\L', '"\\G \\N \\E \\T \\H \\L"'),
     ('\\n \\l \\r', '"\\n \\l \\r"'),
     ('\r\n', '"\r\n"'),
     ('\\\\n', r'"\\n"'),
     ('\u0665.\u0660', '"\u0665.\u0660"'),
     ('\\"spam', r'"\"spam"'),
     ('\\\\"spam', r'"\\\"spam"'),
     ('\\\\\\"spam', r'"\\\"spam"'),
     ('\\\\\\\\"spam', r'"\\\\\"spam"')])
def test_quote(identifier, expected):

# Path: graphviz/quoting.py
# HTML_STRING = re.compile(r'<.*>$', re.DOTALL)
# ID = re.compile(r'([a-zA-Z_][a-zA-Z0-9_]*|-?(\.[0-9]+|[0-9]+(\.[0-9]*)?))$')
# KEYWORDS = {'node', 'edge', 'graph', 'digraph', 'subgraph', 'strict'}
# COMPASS = {'n', 'ne', 'e', 'se', 's', 'sw', 'w', 'nw', 'c', '_'}  # TODO
# QUOTE_OPTIONAL_BACKSLASHES = re.compile(r'(?P<bs>(?:\\\\)*)'
#                                         r'\\?(?P<quote>")')
# ESCAPE_UNESCAPED_QUOTES = functools.partial(QUOTE_OPTIONAL_BACKSLASHES.sub,
#                                             r'\g<bs>\\\g<quote>')
# def quote(identifier: str,
#           is_html_string=HTML_STRING.match,
#           is_valid_id=ID.match,
#           dot_keywords=KEYWORDS,
#           escape_unescaped_quotes=ESCAPE_UNESCAPED_QUOTES) -> str:
# def quote_edge(identifier: str) -> str:
# def a_list(label: typing.Optional[str] = None,
#            kwargs=None, attributes=None) -> str:
# def attr_list(label: typing.Optional[str] = None,
#               kwargs=None, attributes=None) -> str:
# def escape(s: str) -> str:
# def nohtml(s: str) -> str:
# class Quote:
# class NoHtml(str):


# Path: tests/test_quoting.py
import warnings
import pytest
import graphviz
from graphviz import quoting

    'char', ['G', 'E', 'T', 'H', 'L', 'l'])
def test_deprecated_escape(recwarn, char):
    warnings.simplefilter('always')

    escape = eval(rf'"\{char}"')

    assert len(recwarn) == 1
    w = recwarn.pop(DeprecationWarning)
    assert str(w.message).startswith('invalid escape sequence')

    assert escape == f'\\{char}'
    assert quoting.quote(escape) == f'"\\{char}"'


@pytest.mark.parametrize(
    'identifier, expected',
    [('"spam"', r'"\"spam\""'),
     ('node', '"node"'),
     ('EDGE', '"EDGE"'),
     ('Graph', '"Graph"'),
     ('\\G \\N \\E \\T \\H \\L', '"\\G \\N \\E \\T \\H \\L"'),
     ('\\n \\l \\r', '"\\n \\l \\r"'),
     ('\r\n', '"\r\n"'),
     ('\\\\n', r'"\\n"'),
     ('\u0665.\u0660', '"\u0665.\u0660"'),
     ('\\"spam', r'"\"spam"'),
     ('\\\\"spam', r'"\\\"spam"'),
     ('\\\\\\"spam', r'"\\\"spam"'),
     ('\\\\\\\\"spam', r'"\\\\\"spam"')])
def test_quote(identifier, expected):

    assert quoting.quote(identifier) == expected