| 1 | #!/usr/bin/env python2
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| 2 | from __future__ import print_function
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| 3 |
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| 4 | import unittest
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| 5 |
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| 6 | from lazylex import html # module under test log = html.log
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| 7 |
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| 8 | log = html.log
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| 9 |
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| 10 | with open('lazylex/testdata.html') as f:
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| 11 | TEST_HTML = f.read()
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| 12 |
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| 13 |
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| 14 | def _MakeTagLexer(s):
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| 15 | lex = html.TagLexer(s)
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| 16 | lex.Reset(0, len(s))
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| 17 | return lex
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| 18 |
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| 19 |
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| 20 | def _PrintTokens(lex):
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| 21 | log('')
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| 22 | log('tag = %r', lex.TagName())
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| 23 | for tok, start, end in lex.Tokens():
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| 24 | log('%s %r', tok, lex.s[start:end])
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| 25 |
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| 26 |
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| 27 | class TagLexerTest(unittest.TestCase):
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| 28 |
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| 29 | def testTagLexer(self):
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| 30 | # Invalid!
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| 31 | #lex = _MakeTagLexer('< >')
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| 32 | #print(lex.Tag())
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| 33 |
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| 34 | lex = _MakeTagLexer('<a>')
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| 35 | _PrintTokens(lex)
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| 36 |
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| 37 | lex = _MakeTagLexer('<a novalue>')
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| 38 | _PrintTokens(lex)
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| 39 |
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| 40 | # Note: we could have a different HasAttr() method
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| 41 | # <a novalue> means lex.Get('novalue') == None
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| 42 | # https://developer.mozilla.org/en-US/docs/Web/API/Element/hasAttribute
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| 43 | self.assertEqual(None, lex.GetAttrRaw('novalue'))
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| 44 |
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| 45 | lex = _MakeTagLexer('<a href="double quoted">')
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| 46 | _PrintTokens(lex)
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| 47 |
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| 48 | self.assertEqual('double quoted', lex.GetAttrRaw('href'))
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| 49 | self.assertEqual(None, lex.GetAttrRaw('oops'))
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| 50 |
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| 51 | lex = _MakeTagLexer('<a href=foo class="bar">')
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| 52 | _PrintTokens(lex)
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| 53 |
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| 54 | lex = _MakeTagLexer('<a href=foo class="bar" />')
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| 55 | _PrintTokens(lex)
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| 56 |
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| 57 | lex = _MakeTagLexer('<a href="?foo=1&bar=2" />')
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| 58 | self.assertEqual('?foo=1&bar=2', lex.GetAttrRaw('href'))
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| 59 |
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| 60 | def testTagName(self):
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| 61 | lex = _MakeTagLexer('<a href=foo class="bar" />')
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| 62 | self.assertEqual('a', lex.TagName())
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| 63 |
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| 64 | def testAllAttrs(self):
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| 65 | """
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| 66 | [('key', 'value')] for all
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| 67 | """
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| 68 | # closed
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| 69 | lex = _MakeTagLexer('<a href=foo class="bar" />')
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| 70 | self.assertEqual([('href', 'foo'), ('class', 'bar')],
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| 71 | lex.AllAttrsRaw())
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| 72 |
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| 73 | lex = _MakeTagLexer('<a href="?foo=1&bar=2" />')
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| 74 | self.assertEqual([('href', '?foo=1&bar=2')], lex.AllAttrsRaw())
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| 75 |
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| 76 |
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| 77 | class LexerTest(unittest.TestCase):
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| 78 |
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| 79 | # IndexLinker in devtools/make_help.py
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| 80 | # <pre> sections in doc/html_help.py
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| 81 | # TocExtractor in devtools/cmark.py
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| 82 |
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| 83 | def testPstrip(self):
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| 84 | """Remove anything like this.
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| 85 |
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| 86 | <p><pstrip> </pstrip></p>
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| 87 | """
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| 88 | pass
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| 89 |
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| 90 | def testCommentParse(self):
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| 91 | n = len(TEST_HTML)
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| 92 | for tok_id, end_pos in html._Tokens(TEST_HTML, 0, n):
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| 93 | if tok_id == html.Invalid:
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| 94 | raise RuntimeError()
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| 95 | print(tok_id)
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| 96 |
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| 97 | def testValid(self):
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| 98 | Tok = html.Tok
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| 99 |
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| 100 | lex = html.ValidTokens('<a>hi</a>')
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| 101 |
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| 102 | tok_id, pos = next(lex)
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| 103 | self.assertEqual(3, pos)
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| 104 | self.assertEqual(Tok.StartTag, tok_id)
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| 105 |
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| 106 | tok_id, pos = next(lex)
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| 107 | self.assertEqual(5, pos)
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| 108 | self.assertEqual(Tok.RawData, tok_id)
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| 109 |
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| 110 | tok_id, pos = next(lex)
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| 111 | self.assertEqual(9, pos)
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| 112 | self.assertEqual(Tok.EndTag, tok_id)
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| 113 |
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| 114 | tok_id, pos = next(lex)
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| 115 | self.assertEqual(9, pos)
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| 116 | self.assertEqual(Tok.EndOfStream, tok_id)
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| 117 |
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| 118 | lex = html.Lexer('<a>hi</a>')
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| 119 | while True:
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| 120 | tok_id, pos = lex.Read()
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| 121 | print('%d %s' % (pos, html.TokenName(tok_id)))
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| 122 | if tok_id == Tok.EndOfStream:
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| 123 | break
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| 124 |
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| 125 | return
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| 126 | tok_id, pos = next(lex)
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| 127 | self.assertEqual(9, pos)
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| 128 | self.assertEqual(Tok.EndOfStream, tok_id)
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| 129 |
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| 130 | while True:
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| 131 | tok_id, pos = next(lex)
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| 132 | print('%d %s' % (pos, html.TokenName(tok_id)))
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| 133 |
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| 134 | def testInvalid(self):
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| 135 | Tok = html.Tok
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| 136 |
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| 137 | lex = html.ValidTokens('<a>&')
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| 138 |
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| 139 | tok_id, pos = next(lex)
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| 140 | self.assertEqual(3, pos)
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| 141 | self.assertEqual(Tok.StartTag, tok_id)
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| 142 |
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| 143 | try:
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| 144 | tok_id, pos = next(lex)
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| 145 | except html.LexError as e:
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| 146 | print(e)
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| 147 | else:
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| 148 | self.fail('Expected LexError')
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| 149 |
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| 150 |
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| 151 | if __name__ == '__main__':
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| 152 | unittest.main()
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