make convert_hn() public instead of internal (#213)

Signed-off-by: chrispy <chrispy@synopsys.com>

tests/test_conversions.py

@@ -164,7 +164,8 @@ def test_hn():
     assert md('<h5>Hello</h5>') == '\n\n##### Hello\n\n'
     assert md('<h6>Hello</h6>') == '\n\n###### Hello\n\n'
     assert md('<h10>Hello</h10>') == md('<h6>Hello</h6>')
-    assert md('<hn>Hello</hn>') == md('Hello')
+    assert md('<h0>Hello</h0>') == md('<h1>Hello</h1>')
+    assert md('<hx>Hello</hx>') == md('Hello')
 
 
 def test_hn_chained():

tests/test_custom_converter.py

@@ -12,7 +12,11 @@ class UnitTestConverter(MarkdownConverter):
 
     def convert_custom_tag(self, el, text, parent_tags):
         """Ensure conversion function is found for tags with special characters in name"""
-        return "FUNCTION USED: %s" % text
+        return "convert_custom_tag(): %s" % text
+
+    def convert_hN(self, n, el, text, parent_tags):
+        """Ensure conversion function is found for headings"""
+        return "convert_hN(%d): %s" % (n, text)
 
 
 def test_custom_conversion_functions():
@@ -23,7 +27,9 @@ def test_custom_conversion_functions():
     assert md('<img src="/path/to/img.jpg" alt="Alt text" title="Optional title" />text') == '![Alt text](/path/to/img.jpg "Optional title")\n\ntext'
     assert md('<img src="/path/to/img.jpg" alt="Alt text" />text') == '![Alt text](/path/to/img.jpg)\n\ntext'
 
-    assert md("<custom-tag>text</custom-tag>") == "FUNCTION USED: text"
+    assert md("<custom-tag>text</custom-tag>") == "convert_custom_tag(): text"
+
+    assert md("<h3>text</h3>") == "convert_hN(3): text"
 
 
 def test_soup():