Source Code for Module lxml.tests.test_css

  1  import unittest, sys 
  2  from lxml.tests.common_imports import doctest, make_doctest, HelperTestCase 
  3  from lxml import html 
  4  from lxml import cssselect 
  5  import os 
  6   
  7  doc_fn = os.path.join(os.path.dirname(__file__), 
  8                        'css_shakespear.html') 
  9   
 10  try: 
 11      basestring = __builtins__['basestring'] 
 12  except (NameError, KeyError): 
 13      basestring = (str, bytes) 
 14   
 15  # Data borrowed from http://mootools.net/slickspeed/ 
 16   
 17 -class CSSTestCase(HelperTestCase): 
 18       
 19      selectors = [ 
 20          ## Changed from original; probably because I'm only searching the body 
 21          #('*', 252), 
 22          ('*', 246), 
 23          ('div:only-child', 22), # ? 
 24          ## Changed from original, because the original doesn't make sense. 
 25          ## There really aren't that many occurrances of 'celia' 
 26          #('div:contains(CELIA)', 243), 
 27          ('div:contains(CELIA)', 30), 
 28          ('div:nth-child(even)', 106), 
 29          ('div:nth-child(2n)', 106), 
 30          ('div:nth-child(odd)', 137), 
 31          ('div:nth-child(2n+1)', 137), 
 32          ('div:nth-child(n)', 243), 
 33          ('div:last-child', 53), 
 34          ('div:first-child', 51), 
 35          ('div > div', 242), 
 36          ('div + div', 190), 
 37          ('div ~ div', 190), 
 38          ('body', 1), 
 39          ('body div', 243), 
 40          ('div', 243), 
 41          ('div div', 242), 
 42          ('div div div', 241), 
 43          ('div, div, div', 243), 
 44          ('div, a, span', 243), 
 45          ('.dialog', 51), 
 46          ('div.dialog', 51), 
 47          ('div .dialog', 51), 
 48          ('div.character, div.dialog', 99), 
 49          ('div.direction.dialog', 0), 
 50          ('div.dialog.direction', 0), 
 51          ('div.dialog.scene', 1), 
 52          ('div.scene.scene', 1), 
 53          ('div.scene .scene', 0), 
 54          ('div.direction .dialog ', 0), 
 55          ('div .dialog .direction', 4), 
 56          ('div.dialog .dialog .direction', 4), 
 57          ('#speech5', 1), 
 58          ('div#speech5', 1), 
 59          ('div #speech5', 1), 
 60          ('div.scene div.dialog', 49), 
 61          ('div#scene1 div.dialog div', 142), 
 62          ('#scene1 #speech1', 1), 
 63          ('div[class]', 103), 
 64          ('div[class=dialog]', 50), 
 65          ('div[class^=dia]', 51), 
 66          ('div[class$=log]', 50), 
 67          ('div[class*=sce]', 1), 
 68          ('div[class|=dialog]', 50), # ? Seems right 
 69          ('div[class!=madeup]', 243), # ? Seems right 
 70          ('div[class~=dialog]', 51), # ? Seems right 
 71          ] 
 72   
 73 -    def __init__(self, index): 
 74          self.index = index 
 75          super(HelperTestCase, self).__init__() 
 76   
 77 -    def all(cls): 
 78          for i in range(len(cls.selectors)): 
 79              yield cls(i) 
 80      all = classmethod(all) 
 81   
 82 -    def runTest(self): 
 83          f = open(doc_fn, 'rb') 
 84          c = f.read() 
 85          f.close() 
 86          doc = html.document_fromstring(c) 
 87          body = doc.xpath('//body')[0] 
 88          bad = [] 
 89          selector, count = self.selectors[self.index] 
 90          xpath = cssselect.css_to_xpath(cssselect.parse(selector)) 
 91          try: 
 92              results = body.xpath(xpath) 
 93          except Exception: 
 94              e = sys.exc_info()[1] 
 95              e.args = ("%s for xpath %r" % (e, xpath)) 
 96              raise 
 97          found = {} 
 98          for item in results: 
 99              if item in found: 
100                  assert 0, ( 
101                      "Element shows up multiple times: %r" % item) 
102              found[item] = None 
103          if isinstance(results, basestring): 
104              assert 0, ( 
105                  "Got string result (%r), not element, for xpath %r" 
106                  % (results[:20], str(xpath))) 
107          if len(results) != count: 
108              #if self.shortDescription() == 'div.character, div.dialog': 
109              #    import pdb; pdb.set_trace() 
110              assert 0, ( 
111                  "Did not get expected results (%s) instead %s for xpath %r" 
112                  % (count, len(results), str(xpath))) 
113   
114 -    def shortDescription(self): 
115          return self.selectors[self.index][0] 
116   
117 -def unique(s): 
118      found = {} 
119      result = [] 
120      for item in s: 
121          if item in found: 
122              continue 
123          found[item] = None 
124          result.append(s) 
125      return result 
126           
127 -def test_suite(): 
128      suite = unittest.TestSuite() 
129      if sys.version_info >= (2,4): 
130          suite.addTests([make_doctest('test_css_select.txt')]) 
131      suite.addTests([make_doctest('test_css.txt')]) 
132      suite.addTests(doctest.DocTestSuite(cssselect)) 
133      suite.addTests(list(CSSTestCase.all())) 
134      return suite 
135