BaseSgmlLinkExtractor: Added unit test of a link with an inner tag

scrapy/tests/sample_data/link_extractor/sgml_linkextractor.html

@@ -12,6 +12,7 @@
 <a href='http://example.com/sample3.html' title='sample 3'>sample 3 text</a>
 <a href='sample3.html'>sample 3 repetition</a>
 <a href='http://www.google.com/something'></a>
+<a href='http://example.com/innertag.html'><b>inner</b> tag</a>
 </div>
 </body>
 </html>

scrapy/tests/test_contrib_linkextractors.py

@@ -123,6 +123,7 @@ class SgmlLinkExtractorTestCase(unittest.TestCase):
             Link(url='http://example.com/sample2.html', text=u'sample 2'),
             Link(url='http://example.com/sample3.html', text=u'sample 3 text'),
             Link(url='http://www.google.com/something', text=u''),
+            Link(url='http://example.com/innertag.html', text=u'inner tag'),
         ])
 
         lx = SgmlLinkExtractor(allow=('sample', ))