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A Python parser for MediaWiki wikicode https://mwparserfromhell.readthedocs.io/
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mwparserfromhell/tests/test_builder.py

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  1. # Copyright (C) 2012-2019 Ben Kurtovic <ben.kurtovic@gmail.com>

  2. #

  3. # Permission is hereby granted, free of charge, to any person obtaining a copy

  4. # of this software and associated documentation files (the "Software"), to deal

  5. # in the Software without restriction, including without limitation the rights

  6. # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

  7. # copies of the Software, and to permit persons to whom the Software is

  8. # furnished to do so, subject to the following conditions:

  9. #

  10. # The above copyright notice and this permission notice shall be included in

  11. # all copies or substantial portions of the Software.

  12. #

  13. # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

  14. # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

  15. # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

  16. # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

  17. # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

  18. # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

  19. # SOFTWARE.

  20. 

  21. import unittest

  22. 

  23. from mwparserfromhell.nodes import (Argument, Comment, ExternalLink, Heading,

  24.                                     HTMLEntity, Tag, Template, Text, Wikilink)

  25. from mwparserfromhell.nodes.extras import Attribute, Parameter

  26. from mwparserfromhell.parser import tokens, ParserError

  27. from mwparserfromhell.parser.builder import Builder

  28. 

  29. from ._test_tree_equality import TreeEqualityTestCase, wrap, wraptext

  30. 

  31. class TestBuilder(TreeEqualityTestCase):

  32.     """Tests for the builder, which turns tokens into Wikicode objects."""

  33. 

  34.     def setUp(self):

  35.         self.builder = Builder()

  36. 

  37.     def test_text(self):

  38.         """tests for building Text nodes"""

  39.         tests = [

  40.             ([tokens.Text(text="foobar")], wraptext("foobar")),

  41.             ([tokens.Text(text="fóóbar")], wraptext("fóóbar")),

  42.             ([tokens.Text(text="spam"), tokens.Text(text="eggs")],

  43.              wraptext("spam", "eggs")),

  44.         ]

  45.         for test, valid in tests:

  46.             self.assertWikicodeEqual(valid, self.builder.build(test))

  47. 

  48.     def test_template(self):

  49.         """tests for building Template nodes"""

  50.         tests = [

  51.             ([tokens.TemplateOpen(), tokens.Text(text="foobar"),

  52.               tokens.TemplateClose()],

  53.              wrap([Template(wraptext("foobar"))])),

  54. 

  55.             ([tokens.TemplateOpen(), tokens.Text(text="spam"),

  56.               tokens.Text(text="eggs"), tokens.TemplateClose()],

  57.              wrap([Template(wraptext("spam", "eggs"))])),

  58. 

  59.             ([tokens.TemplateOpen(), tokens.Text(text="foo"),

  60.               tokens.TemplateParamSeparator(), tokens.Text(text="bar"),

  61.               tokens.TemplateClose()],

  62.              wrap([Template(wraptext("foo"), params=[

  63.                  Parameter(wraptext("1"), wraptext("bar"), showkey=False)])])),

  64. 

  65.             ([tokens.TemplateOpen(), tokens.Text(text="foo"),

  66.               tokens.TemplateParamSeparator(), tokens.Text(text="bar"),

  67.               tokens.TemplateParamEquals(), tokens.Text(text="baz"),

  68.               tokens.TemplateClose()],

  69.              wrap([Template(wraptext("foo"), params=[

  70.                  Parameter(wraptext("bar"), wraptext("baz"))])])),

  71. 

  72.             ([tokens.TemplateOpen(), tokens.TemplateParamSeparator(),

  73.               tokens.TemplateParamSeparator(), tokens.TemplateParamEquals(),

  74.               tokens.TemplateParamSeparator(), tokens.TemplateClose()],

  75.              wrap([Template(wrap([]), params=[

  76.                  Parameter(wraptext("1"), wrap([]), showkey=False),

  77.                  Parameter(wrap([]), wrap([]), showkey=True),

  78.                  Parameter(wraptext("2"), wrap([]), showkey=False)])])),

  79. 

  80.             ([tokens.TemplateOpen(), tokens.Text(text="foo"),

  81.               tokens.TemplateParamSeparator(), tokens.Text(text="bar"),

  82.               tokens.TemplateParamEquals(), tokens.Text(text="baz"),

  83.               tokens.TemplateParamSeparator(), tokens.Text(text="biz"),

  84.               tokens.TemplateParamSeparator(), tokens.Text(text="buzz"),

  85.               tokens.TemplateParamSeparator(), tokens.Text(text="3"),

  86.               tokens.TemplateParamEquals(), tokens.Text(text="buff"),

  87.               tokens.TemplateParamSeparator(), tokens.Text(text="baff"),

  88.               tokens.TemplateClose()],

  89.              wrap([Template(wraptext("foo"), params=[

  90.                  Parameter(wraptext("bar"), wraptext("baz")),

  91.                  Parameter(wraptext("1"), wraptext("biz"), showkey=False),

  92.                  Parameter(wraptext("2"), wraptext("buzz"), showkey=False),

  93.                  Parameter(wraptext("3"), wraptext("buff")),

  94.                  Parameter(wraptext("3"), wraptext("baff"),

  95.                            showkey=False)])])),

  96.         ]

  97.         for test, valid in tests:

  98.             self.assertWikicodeEqual(valid, self.builder.build(test))

  99. 

  100.     def test_argument(self):

  101.         """tests for building Argument nodes"""

  102.         tests = [

  103.             ([tokens.ArgumentOpen(), tokens.Text(text="foobar"),

  104.               tokens.ArgumentClose()],

  105.              wrap([Argument(wraptext("foobar"))])),

  106. 

  107.             ([tokens.ArgumentOpen(), tokens.Text(text="spam"),

  108.               tokens.Text(text="eggs"), tokens.ArgumentClose()],

  109.              wrap([Argument(wraptext("spam", "eggs"))])),

  110. 

  111.             ([tokens.ArgumentOpen(), tokens.Text(text="foo"),

  112.               tokens.ArgumentSeparator(), tokens.Text(text="bar"),

  113.               tokens.ArgumentClose()],

  114.              wrap([Argument(wraptext("foo"), wraptext("bar"))])),

  115. 

  116.             ([tokens.ArgumentOpen(), tokens.Text(text="foo"),

  117.               tokens.Text(text="bar"), tokens.ArgumentSeparator(),

  118.               tokens.Text(text="baz"), tokens.Text(text="biz"),

  119.               tokens.ArgumentClose()],

  120.              wrap([Argument(wraptext("foo", "bar"), wraptext("baz", "biz"))])),

  121.         ]

  122.         for test, valid in tests:

  123.             self.assertWikicodeEqual(valid, self.builder.build(test))

  124. 

  125.     def test_wikilink(self):

  126.         """tests for building Wikilink nodes"""

  127.         tests = [

  128.             ([tokens.WikilinkOpen(), tokens.Text(text="foobar"),

  129.               tokens.WikilinkClose()],

  130.              wrap([Wikilink(wraptext("foobar"))])),

  131. 

  132.             ([tokens.WikilinkOpen(), tokens.Text(text="spam"),

  133.               tokens.Text(text="eggs"), tokens.WikilinkClose()],

  134.              wrap([Wikilink(wraptext("spam", "eggs"))])),

  135. 

  136.             ([tokens.WikilinkOpen(), tokens.Text(text="foo"),

  137.               tokens.WikilinkSeparator(), tokens.Text(text="bar"),

  138.               tokens.WikilinkClose()],

  139.              wrap([Wikilink(wraptext("foo"), wraptext("bar"))])),

  140. 

  141.             ([tokens.WikilinkOpen(), tokens.Text(text="foo"),

  142.               tokens.Text(text="bar"), tokens.WikilinkSeparator(),

  143.               tokens.Text(text="baz"), tokens.Text(text="biz"),

  144.               tokens.WikilinkClose()],

  145.              wrap([Wikilink(wraptext("foo", "bar"), wraptext("baz", "biz"))])),

  146.         ]

  147.         for test, valid in tests:

  148.             self.assertWikicodeEqual(valid, self.builder.build(test))

  149. 

  150.     def test_external_link(self):

  151.         """tests for building ExternalLink nodes"""

  152.         tests = [

  153.             ([tokens.ExternalLinkOpen(brackets=False),

  154.               tokens.Text(text="http://example.com/"),

  155.               tokens.ExternalLinkClose()],

  156.              wrap([ExternalLink(wraptext("http://example.com/"),

  157.                                 brackets=False)])),

  158. 

  159.             ([tokens.ExternalLinkOpen(brackets=True),

  160.               tokens.Text(text="http://example.com/"),

  161.               tokens.ExternalLinkClose()],

  162.              wrap([ExternalLink(wraptext("http://example.com/"))])),

  163. 

  164.             ([tokens.ExternalLinkOpen(brackets=True),

  165.               tokens.Text(text="http://example.com/"),

  166.               tokens.ExternalLinkSeparator(), tokens.ExternalLinkClose()],

  167.              wrap([ExternalLink(wraptext("http://example.com/"), wrap([]))])),

  168. 

  169.             ([tokens.ExternalLinkOpen(brackets=True),

  170.               tokens.Text(text="http://example.com/"),

  171.               tokens.ExternalLinkSeparator(), tokens.Text(text="Example"),

  172.               tokens.ExternalLinkClose()],

  173.              wrap([ExternalLink(wraptext("http://example.com/"),

  174.                                 wraptext("Example"))])),

  175. 

  176.             ([tokens.ExternalLinkOpen(brackets=False),

  177.               tokens.Text(text="http://example"), tokens.Text(text=".com/foo"),

  178.               tokens.ExternalLinkClose()],

  179.              wrap([ExternalLink(wraptext("http://example", ".com/foo"),

  180.                                 brackets=False)])),

  181. 

  182.             ([tokens.ExternalLinkOpen(brackets=True),

  183.               tokens.Text(text="http://example"), tokens.Text(text=".com/foo"),

  184.               tokens.ExternalLinkSeparator(), tokens.Text(text="Example"),

  185.               tokens.Text(text=" Web Page"), tokens.ExternalLinkClose()],

  186.              wrap([ExternalLink(wraptext("http://example", ".com/foo"),

  187.                                 wraptext("Example", " Web Page"))])),

  188.         ]

  189.         for test, valid in tests:

  190.             self.assertWikicodeEqual(valid, self.builder.build(test))

  191. 

  192.     def test_html_entity(self):

  193.         """tests for building HTMLEntity nodes"""

  194.         tests = [

  195.             ([tokens.HTMLEntityStart(), tokens.Text(text="nbsp"),

  196.               tokens.HTMLEntityEnd()],

  197.              wrap([HTMLEntity("nbsp", named=True, hexadecimal=False)])),

  198. 

  199.             ([tokens.HTMLEntityStart(), tokens.HTMLEntityNumeric(),

  200.               tokens.Text(text="107"), tokens.HTMLEntityEnd()],

  201.              wrap([HTMLEntity("107", named=False, hexadecimal=False)])),

  202. 

  203.             ([tokens.HTMLEntityStart(), tokens.HTMLEntityNumeric(),

  204.               tokens.HTMLEntityHex(char="X"), tokens.Text(text="6B"),

  205.               tokens.HTMLEntityEnd()],

  206.              wrap([HTMLEntity("6B", named=False, hexadecimal=True,

  207.                               hex_char="X")])),

  208.         ]

  209.         for test, valid in tests:

  210.             self.assertWikicodeEqual(valid, self.builder.build(test))

  211. 

  212.     def test_heading(self):

  213.         """tests for building Heading nodes"""

  214.         tests = [

  215.             ([tokens.HeadingStart(level=2), tokens.Text(text="foobar"),

  216.               tokens.HeadingEnd()],

  217.              wrap([Heading(wraptext("foobar"), 2)])),

  218. 

  219.             ([tokens.HeadingStart(level=4), tokens.Text(text="spam"),

  220.               tokens.Text(text="eggs"), tokens.HeadingEnd()],

  221.              wrap([Heading(wraptext("spam", "eggs"), 4)])),

  222.         ]

  223.         for test, valid in tests:

  224.             self.assertWikicodeEqual(valid, self.builder.build(test))

  225. 

  226.     def test_comment(self):

  227.         """tests for building Comment nodes"""

  228.         tests = [

  229.             ([tokens.CommentStart(), tokens.Text(text="foobar"),

  230.               tokens.CommentEnd()],

  231.              wrap([Comment("foobar")])),

  232. 

  233.             ([tokens.CommentStart(), tokens.Text(text="spam"),

  234.               tokens.Text(text="eggs"), tokens.CommentEnd()],

  235.              wrap([Comment("spameggs")])),

  236.         ]

  237.         for test, valid in tests:

  238.             self.assertWikicodeEqual(valid, self.builder.build(test))

  239. 

  240.     def test_tag(self):

  241.         """tests for building Tag nodes"""

  242.         tests = [

  243.             # <ref></ref>

  244.             ([tokens.TagOpenOpen(), tokens.Text(text="ref"),

  245.               tokens.TagCloseOpen(padding=""), tokens.TagOpenClose(),

  246.               tokens.Text(text="ref"), tokens.TagCloseClose()],

  247.              wrap([Tag(wraptext("ref"), wrap([]),

  248.                        closing_tag=wraptext("ref"))])),

  249. 

  250.             # <ref name></ref>

  251.             ([tokens.TagOpenOpen(), tokens.Text(text="ref"),

  252.               tokens.TagAttrStart(pad_first=" ", pad_before_eq="",

  253.                                   pad_after_eq=""),

  254.               tokens.Text(text="name"), tokens.TagCloseOpen(padding=""),

  255.               tokens.TagOpenClose(), tokens.Text(text="ref"),

  256.               tokens.TagCloseClose()],

  257.              wrap([Tag(wraptext("ref"), wrap([]),

  258.                       attrs=[Attribute(wraptext("name"))])])),

  259. 

  260.             # <ref name="abc" />

  261.             ([tokens.TagOpenOpen(), tokens.Text(text="ref"),

  262.               tokens.TagAttrStart(pad_first=" ", pad_before_eq="",

  263.                                   pad_after_eq=""),

  264.               tokens.Text(text="name"), tokens.TagAttrEquals(),

  265.               tokens.TagAttrQuote(char='"'), tokens.Text(text="abc"),

  266.               tokens.TagCloseSelfclose(padding=" ")],

  267.              wrap([Tag(wraptext("ref"),

  268.                        attrs=[Attribute(wraptext("name"), wraptext("abc"))],

  269.                        self_closing=True, padding=" ")])),

  270. 

  271.             # <br/>

  272.             ([tokens.TagOpenOpen(), tokens.Text(text="br"),

  273.               tokens.TagCloseSelfclose(padding="")],

  274.              wrap([Tag(wraptext("br"), self_closing=True)])),

  275. 

  276.             # <li>

  277.             ([tokens.TagOpenOpen(), tokens.Text(text="li"),

  278.               tokens.TagCloseSelfclose(padding="", implicit=True)],

  279.              wrap([Tag(wraptext("li"), self_closing=True, implicit=True)])),

  280. 

  281.             # </br>

  282.             ([tokens.TagOpenOpen(invalid=True), tokens.Text(text="br"),

  283.               tokens.TagCloseSelfclose(padding="", implicit=True)],

  284.              wrap([Tag(wraptext("br"), self_closing=True, invalid=True,

  285.                        implicit=True)])),

  286. 

  287.             # </br/>

  288.             ([tokens.TagOpenOpen(invalid=True), tokens.Text(text="br"),

  289.               tokens.TagCloseSelfclose(padding="")],

  290.              wrap([Tag(wraptext("br"), self_closing=True, invalid=True)])),

  291. 

  292.             # <ref name={{abc}}   foo="bar {{baz}}" abc={{de}}f ghi=j{{k}}{{l}}

  293.             #      mno =  '{{p}} [[q]] {{r}}'>[[Source]]</ref>

  294.             ([tokens.TagOpenOpen(), tokens.Text(text="ref"),

  295.               tokens.TagAttrStart(pad_first=" ", pad_before_eq="",

  296.                                   pad_after_eq=""),

  297.               tokens.Text(text="name"), tokens.TagAttrEquals(),

  298.               tokens.TemplateOpen(), tokens.Text(text="abc"),

  299.               tokens.TemplateClose(),

  300.               tokens.TagAttrStart(pad_first="   ", pad_before_eq="",

  301.                                   pad_after_eq=""),

  302.               tokens.Text(text="foo"), tokens.TagAttrEquals(),

  303.               tokens.TagAttrQuote(char='"'), tokens.Text(text="bar "),

  304.               tokens.TemplateOpen(), tokens.Text(text="baz"),

  305.               tokens.TemplateClose(),

  306.               tokens.TagAttrStart(pad_first=" ", pad_before_eq="",

  307.                                   pad_after_eq=""),

  308.               tokens.Text(text="abc"), tokens.TagAttrEquals(),

  309.               tokens.TemplateOpen(), tokens.Text(text="de"),

  310.               tokens.TemplateClose(), tokens.Text(text="f"),

  311.               tokens.TagAttrStart(pad_first=" ", pad_before_eq="",

  312.                                   pad_after_eq=""),

  313.               tokens.Text(text="ghi"), tokens.TagAttrEquals(),

  314.               tokens.Text(text="j"), tokens.TemplateOpen(),

  315.               tokens.Text(text="k"), tokens.TemplateClose(),

  316.               tokens.TemplateOpen(), tokens.Text(text="l"),

  317.               tokens.TemplateClose(),

  318.               tokens.TagAttrStart(pad_first=" \n ", pad_before_eq=" ",

  319.                                   pad_after_eq="  "),

  320.               tokens.Text(text="mno"), tokens.TagAttrEquals(),

  321.               tokens.TagAttrQuote(char="'"), tokens.TemplateOpen(),

  322.               tokens.Text(text="p"), tokens.TemplateClose(),

  323.               tokens.Text(text=" "), tokens.WikilinkOpen(),

  324.               tokens.Text(text="q"), tokens.WikilinkClose(),

  325.               tokens.Text(text=" "), tokens.TemplateOpen(),

  326.               tokens.Text(text="r"), tokens.TemplateClose(),

  327.               tokens.TagCloseOpen(padding=""), tokens.WikilinkOpen(),

  328.               tokens.Text(text="Source"), tokens.WikilinkClose(),

  329.               tokens.TagOpenClose(), tokens.Text(text="ref"),

  330.               tokens.TagCloseClose()],

  331.              wrap([Tag(wraptext("ref"), wrap([Wikilink(wraptext("Source"))]), [

  332.                     Attribute(wraptext("name"),

  333.                               wrap([Template(wraptext("abc"))]), None),

  334.                     Attribute(wraptext("foo"), wrap([Text("bar "),

  335.                               Template(wraptext("baz"))]), pad_first="   "),

  336.                     Attribute(wraptext("abc"), wrap([Template(wraptext("de")),

  337.                               Text("f")]), None),

  338.                     Attribute(wraptext("ghi"), wrap([Text("j"),

  339.                               Template(wraptext("k")),

  340.                               Template(wraptext("l"))]), None),

  341.                     Attribute(wraptext("mno"), wrap([Template(wraptext("p")),

  342.                               Text(" "), Wikilink(wraptext("q")), Text(" "),

  343.                               Template(wraptext("r"))]), "'", " \n ", " ",

  344.                               "  ")])])),

  345. 

  346.             # "''italic text''"

  347.             ([tokens.TagOpenOpen(wiki_markup="''"), tokens.Text(text="i"),

  348.               tokens.TagCloseOpen(), tokens.Text(text="italic text"),

  349.               tokens.TagOpenClose(), tokens.Text(text="i"),

  350.               tokens.TagCloseClose()],

  351.              wrap([Tag(wraptext("i"), wraptext("italic text"),

  352.                        wiki_markup="''")])),

  353. 

  354.             # * bullet

  355.             ([tokens.TagOpenOpen(wiki_markup="*"), tokens.Text(text="li"),

  356.               tokens.TagCloseSelfclose(), tokens.Text(text=" bullet")],

  357.              wrap([Tag(wraptext("li"), wiki_markup="*", self_closing=True),

  358.                    Text(" bullet")])),

  359.         ]

  360.         for test, valid in tests:

  361.             self.assertWikicodeEqual(valid, self.builder.build(test))

  362. 

  363.     def test_integration(self):

  364.         """a test for building a combination of templates together"""

  365.         # {{{{{{{{foo}}bar|baz=biz}}buzz}}usr|{{bin}}}}

  366.         test = [tokens.TemplateOpen(), tokens.TemplateOpen(),

  367.                 tokens.TemplateOpen(), tokens.TemplateOpen(),

  368.                 tokens.Text(text="foo"), tokens.TemplateClose(),

  369.                 tokens.Text(text="bar"), tokens.TemplateParamSeparator(),

  370.                 tokens.Text(text="baz"), tokens.TemplateParamEquals(),

  371.                 tokens.Text(text="biz"), tokens.TemplateClose(),

  372.                 tokens.Text(text="buzz"), tokens.TemplateClose(),

  373.                 tokens.Text(text="usr"), tokens.TemplateParamSeparator(),

  374.                 tokens.TemplateOpen(), tokens.Text(text="bin"),

  375.                 tokens.TemplateClose(), tokens.TemplateClose()]

  376.         valid = wrap(

  377.             [Template(wrap([Template(wrap([Template(wrap([Template(wraptext(

  378.             "foo")), Text("bar")]), params=[Parameter(wraptext("baz"),

  379.             wraptext("biz"))]), Text("buzz")])), Text("usr")]), params=[

  380.             Parameter(wraptext("1"), wrap([Template(wraptext("bin"))]),

  381.             showkey=False)])])

  382.         self.assertWikicodeEqual(valid, self.builder.build(test))

  383. 

  384.     def test_integration2(self):

  385.         """an even more audacious test for building a horrible wikicode mess"""

  386.         # {{a|b|{{c|[[d]]{{{e}}}}}}}[[f|{{{g}}}<!--h-->]]{{i|j=&nbsp;}}

  387.         test = [tokens.TemplateOpen(), tokens.Text(text="a"),

  388.                 tokens.TemplateParamSeparator(), tokens.Text(text="b"),

  389.                 tokens.TemplateParamSeparator(), tokens.TemplateOpen(),

  390.                 tokens.Text(text="c"), tokens.TemplateParamSeparator(),

  391.                 tokens.WikilinkOpen(), tokens.Text(text="d"),

  392.                 tokens.WikilinkClose(), tokens.ArgumentOpen(),

  393.                 tokens.Text(text="e"), tokens.ArgumentClose(),

  394.                 tokens.TemplateClose(), tokens.TemplateClose(),

  395.                 tokens.WikilinkOpen(), tokens.Text(text="f"),

  396.                 tokens.WikilinkSeparator(), tokens.ArgumentOpen(),

  397.                 tokens.Text(text="g"), tokens.ArgumentClose(),

  398.                 tokens.CommentStart(), tokens.Text(text="h"),

  399.                 tokens.CommentEnd(), tokens.WikilinkClose(),

  400.                 tokens.TemplateOpen(), tokens.Text(text="i"),

  401.                 tokens.TemplateParamSeparator(), tokens.Text(text="j"),

  402.                 tokens.TemplateParamEquals(), tokens.HTMLEntityStart(),

  403.                 tokens.Text(text="nbsp"), tokens.HTMLEntityEnd(),

  404.                 tokens.TemplateClose()]

  405.         valid = wrap(

  406.             [Template(wraptext("a"), params=[Parameter(wraptext("1"), wraptext(

  407.             "b"), showkey=False), Parameter(wraptext("2"), wrap([Template(

  408.             wraptext("c"), params=[Parameter(wraptext("1"), wrap([Wikilink(

  409.             wraptext("d")), Argument(wraptext("e"))]), showkey=False)])]),

  410.             showkey=False)]), Wikilink(wraptext("f"), wrap([Argument(wraptext(

  411.             "g")), Comment("h")])), Template(wraptext("i"), params=[

  412.             Parameter(wraptext("j"), wrap([HTMLEntity("nbsp",

  413.             named=True)]))])])

  414.         self.assertWikicodeEqual(valid, self.builder.build(test))

  415. 

  416.     def test_parser_errors(self):

  417.         """test whether ParserError gets thrown for bad input"""

  418.         missing_closes = [

  419.             [tokens.TemplateOpen(), tokens.TemplateParamSeparator()],

  420.             [tokens.TemplateOpen()], [tokens.ArgumentOpen()],

  421.             [tokens.WikilinkOpen()], [tokens.ExternalLinkOpen()],

  422.             [tokens.HeadingStart()], [tokens.CommentStart()],

  423.             [tokens.TagOpenOpen(), tokens.TagAttrStart()],

  424.             [tokens.TagOpenOpen()]

  425.         ]

  426. 

  427.         msg = r"_handle_token\(\) got unexpected TemplateClose"

  428.         self.assertRaisesRegex(ParserError, msg, self.builder.build, [tokens.TemplateClose()])

  429.         for test in missing_closes:

  430.             self.assertRaises(ParserError, self.builder.build, test)

  431. 

  432. if __name__ == "__main__":

  433.     unittest.main(verbosity=2)