mwparserfromhell/tests/test_parser.py

# -*- coding: utf-8  -*-
#
# Copyright (C) 2012-2013 Ben Kurtovic <ben.kurtovic@verizon.net>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

from __future__ import unicode_literals
import unittest

from mwparserfromhell import parser
from mwparserfromhell.compat import range
from mwparserfromhell.nodes import Template, Text, Wikilink
from mwparserfromhell.nodes.extras import Parameter
from mwparserfromhell.smart_list import SmartList
from mwparserfromhell.wikicode import Wikicode

class TestParser(unittest.TestCase):
    """Tests for the Parser class itself, which tokenizes and builds nodes."""

    def assertNodesEqual(self, expected, actual):
        """Assert that two Nodes are the same type and have the same data."""
        self.assertIs(type(expected), type(actual))
        if isinstance(expected, Text):
            self.assertEqual(expected.value, actual.value)
        elif isinstance(expected, Template):
            self.assertWikicodeEqual(expected.name, actual.name)
            length = len(expected.params)
            self.assertEqual(length, len(actual.params))
            for i in range(length):
                exp_param = expected.params[i]
                act_param = actual.params[i]
                self.assertWikicodeEqual(exp_param.name, act_param.name)
                self.assertWikicodeEqual(exp_param.value, act_param.value)
                self.assertIs(exp_param.showkey, act_param.showkey)
        elif isinstance(expected, Wikilink):
            self.assertWikicodeEqual(expected.title, actual.title)
            if expected.text is not None:
                self.assertWikicodeEqual(expected.text, actual.text)
            else:
                self.assertIs(None, actual.text)

    def assertWikicodeEqual(self, expected, actual):
        """Assert that two Wikicode objects have the same data."""
        self.assertIsInstance(actual, Wikicode)
        length = len(expected.nodes)
        self.assertEqual(length, len(actual.nodes))
        for i in range(length):
            self.assertNodesEqual(expected.get(i), actual.get(i))

    def test_use_c(self):
        """make sure the correct tokenizer is used"""
        if parser.use_c:
            self.assertTrue(parser.Parser(None)._tokenizer.USES_C)
            parser.use_c = False
        self.assertFalse(parser.Parser(None)._tokenizer.USES_C)

    def test_parsing(self):
        """integration test for parsing overall"""
        text = "this is text; {{this|is=a|template={{with|[[links]]|in}}it}}"
        wrap = lambda L: Wikicode(SmartList(L))
        expected = wrap([
            Text("this is text; "),
            Template(wrap([Text("this")]), [
                Parameter(wrap([Text("is")]), wrap([Text("a")])),
                Parameter(wrap([Text("template")]), wrap([
                    Template(wrap([Text("with")]), [
                        Parameter(wrap([Text("1")]),
                                  wrap([Wikilink(wrap([Text("links")]))]),
                                  showkey=False),
                        Parameter(wrap([Text("2")]),
                                  wrap([Text("in")]), showkey=False)
                    ]),
                    Text("it")
                ]))
            ])
        ])
        actual = parser.Parser(text).parse()
        self.assertWikicodeEqual(expected, actual)

if __name__ == "__main__":
    unittest.main(verbosity=2)