Package lxml :: Package tests :: Module test_css |
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# Source Code for Module lxml.tests.test_css

     1  import unittest
     2
     3  import lxml.html
     4
     5  from lxml.tests.common_imports import doctest, HelperTestCase
     6
     7
     8  HTML = '''
     9  <div>
    10    <a href="foo">link</a>
    11    <a>anchor</a>
    12  </div>
    13  '''
    14
    15
    16 -class CSSTestCase(HelperTestCase):
    17
    18 -    def test_cssselect(self):
    19          div, = lxml.html.fromstring(HTML).xpath('//div')
    20
    21          def count(selector, expected_count, **kwargs):
    22              result = div.cssselect(selector, **kwargs)
    23              self.assertEqual(len(result), expected_count)
    24
    25          count('div', 1)
    26          count('a', 2)
    27          count('em', 0)
    28          # Element names are case-insensitive in HTML
    29          count('DIV', 1)
    30          # ... but not in XHTML or XML
    31          count('DIV', 0, translator='xhtml')
    32          count('DIV', 0, translator='xml')
    33
    34          # :contains() is case-insensitive in lxml
    35          count(':contains("link")', 2)  # div, a
    36          count(':contains("LInk")', 2)
    37          # Whatever the document language
    38          count(':contains("LInk")', 2, translator='xhtml')
    39          count(':contains("LInk")', 2, translator='xml')
    40          # ... but not in upstream cssselect
    41          import cssselect
    42          count(':contains("link")', 2, translator=cssselect.HTMLTranslator())
    43          count(':contains("LInk")', 0, translator=cssselect.HTMLTranslator())
    44
    45
    46 -def test_suite():
    47      suite = unittest.TestSuite()
    48      try:
    49          import cssselect
    50      except ImportError:
    51          # no 'cssselect' installed
    52          print("Skipping tests in lxml.cssselect - external cssselect package is not installed")
    53          return suite
    54
    55      import lxml.cssselect
    56      suite.addTests(doctest.DocTestSuite(lxml.cssselect))
    57      suite.addTests([unittest.makeSuite(CSSTestCase)])
    58      return suite
    59