Added test for the new 'smart_substitutions' feature of Smarty extens…

…ion.

tests/test_extensions.py

@@ -583,3 +583,36 @@ def testNoMarker(self):
                 '</li>\n'
               '</ul>\n'
             '</div>\n')
+
+
+class TestSmarty(unittest.TestCase):
+    def setUp(self):
+        config = {
+                'smarty': [
+                    ('smart_angled_quotes', True),
+                    ('smart_substitutions', {
+                        'ndash': '\u2013',
+                        'mdash': '\u2014',
+                        'ellipsis': '\u2026',
+                        'left-single-quote': '&sbquo;', # sb is not a typo!
+                        'right-single-quote': '&lsquo;',
+                        'left-double-quote': '&bdquo;',
+                        'right-double-quote': '&ldquo;',
+                        'left-angle-quote': '[',
+                        'right-angle-quote': ']',
+                    }),]
+        }
+        self.md = markdown.Markdown(extensions=['smarty'],
+                                    extension_configs=config)
+
+    def testCustomSubstitutions(self):
+        text = \
+"""<< The "Unicode char of the year 2014"
+is the 'mdash': ---
+Must not be confused with 'ndash'  (--) ... >>
+"""
+        correct = \
+"""<p>[ The &bdquo;Unicode char of the year 2014&ldquo;
+is the &sbquo;mdash&lsquo;: \u2014
+Must not be confused with &sbquo;ndash&lsquo;  (\u2013) \u2026 ]</p>"""
+        self.assertEqual(self.md.convert(text), correct)