doxygen: document why a test is skipped.

diff --git a/doxygen/test/test_compound.py b/doxygen/test/test_compound.py
index 83c91263980c85abed72e4d08629ed0bd84a4852..42a43a3248c1aca287c186f222e15124b9a63d1e 100644 (file)
--- a/doxygen/test/test_compound.py
+++ b/doxygen/test/test_compound.py
@@ -129,6 +129,7 @@ class Ignored(IntegrationTestCase):
 
     @unittest.expectedFailure
     def test_empty_class_doc_not_generated(self):
+        # This needs to be generated in order to be compatible with tag files
         self.run_dox2html5(index_pages=[], wildcard='classBrief.xml')
         self.assertFalse(os.path.exists(os.path.join(self.path, 'html', 'classBrief.html')))