bpo-37399: Extend the tests with some whitespace to see if merging text/tail content works as expected.

Author: scoder

Lib/test/test_xml_etree.py

@@ -2984,35 +2984,35 @@ def test_late_tail_mix_pi_comments(self):
         class TreeBuilderSubclass(ET.TreeBuilder):
             pass
 
-        xml = "<a>text<?pi1?><!-- comment --><?pi2?>tail</a>"
+        xml = "<a>text<?pi1?> <!-- comment -->\n<?pi2?>tail</a>"
         parser = ET.XMLParser(target=ET.TreeBuilder(insert_comments=True))
         parser.feed(xml)
         a = parser.close()
         self.assertEqual(a[0].text, ' comment ')
-        self.assertEqual(a[0].tail, 'tail')
-        self.assertEqual(a.text, "text")
+        self.assertEqual(a[0].tail, '\ntail')
+        self.assertEqual(a.text, "text ")
 
         parser = ET.XMLParser(target=TreeBuilderSubclass(insert_comments=True))
         parser.feed(xml)
         a = parser.close()
         self.assertEqual(a[0].text, ' comment ')
-        self.assertEqual(a[0].tail, 'tail')
-        self.assertEqual(a.text, "text")
+        self.assertEqual(a[0].tail, '\ntail')
+        self.assertEqual(a.text, "text ")
 
-        xml = "<a>text<!-- comment --><?pi data?>tail</a>"
+        xml = "<a>text<!-- comment -->\n<?pi data?>tail</a>"
         parser = ET.XMLParser(target=ET.TreeBuilder(insert_pis=True))
         parser.feed(xml)
         a = parser.close()
         self.assertEqual(a[0].text, 'pi data')
         self.assertEqual(a[0].tail, 'tail')
-        self.assertEqual(a.text, "text")
+        self.assertEqual(a.text, "text\n")
 
         parser = ET.XMLParser(target=TreeBuilderSubclass(insert_pis=True))
         parser.feed(xml)
         a = parser.close()
         self.assertEqual(a[0].text, 'pi data')
         self.assertEqual(a[0].tail, 'tail')
-        self.assertEqual(a.text, "text")
+        self.assertEqual(a.text, "text\n")
 
     def test_treebuilder_elementfactory_none(self):
         parser = ET.XMLParser(target=ET.TreeBuilder(element_factory=None))