diff --git a/pelican/tests/test_readers.py b/pelican/tests/test_readers.py
index cb7db575..1b3a2055 100644
--- a/pelican/tests/test_readers.py
+++ b/pelican/tests/test_readers.py
@@ -14,17 +14,6 @@ CONTENT_PATH = os.path.join(CUR_DIR, 'content')
 def _path(*args):
     return os.path.join(CONTENT_PATH, *args)
 
-class ReaderTests(unittest.TestCase):
-    def test_readfile_unknown_extension(self):
-        f = _path('article_with_metadata.unknownextension')
-        with self.assertRaises(TypeError) as cm:
-            readers.read_file(f)
-        ex = cm.exception
-        self.assertEqual('Pelican does not know how to parse ' + f, ex.message)
-        #, setattr, root.c1.c2, 'text',  "test")
-        #  self.assertTrue(1 == 0)
-        #  except TypeError:
-        #  self.assertTrue(1 == 1)
 
 class ReaderTest(unittest.TestCase):
 
@@ -34,6 +23,15 @@ class ReaderTest(unittest.TestCase):
         return r.read_file(base_path=CONTENT_PATH, path=path)
 
 
+class DefaultReaderTest(ReaderTest):
+
+    def test_readfile_unknown_extension(self):
+        with self.assertRaises(TypeError) as cm:
+            self.read_file(path='article_with_metadata.unknownextension')
+        ex = cm.exception
+        self.assertIn('Pelican does not know how to parse', ex.message)
+
+
 class RstReaderTest(ReaderTest):
 
     def test_article_with_metadata(self):
@@ -98,11 +96,11 @@ class RstReaderTest(ReaderTest):
         # Keys of metadata should be lowercase.
         reader = readers.RstReader(settings=get_settings())
         content, metadata = reader.read(
-                _path('article_with_uppercase_metadata.rst'))
+            _path('article_with_uppercase_metadata.rst'))
 
         self.assertIn('category', metadata, 'Key should be lowercase.')
         self.assertEqual('Yeah', metadata.get('category'),
-                          'Value keeps case.')
+                         'Value keeps case.')
 
     def test_typogrify(self):
         # if nothing is specified in the settings, the content should be
@@ -158,7 +156,6 @@ class MdReaderTest(ReaderTest):
         for key, value in metadata.items():
             self.assertEqual(value, expected[key], key)
 
-
     @unittest.skipUnless(readers.Markdown, "markdown isn't installed")
     def test_article_with_footnote(self):
         reader = readers.MarkdownReader(settings=get_settings())
@@ -179,8 +176,8 @@ class MdReaderTest(ReaderTest):
             'title="Jump back to footnote 1 in the text">&#8617;</a></p>\n'
             '</li>\n<li id="fn:footnote">\n'
             '<p>Named footnote&#160;'
-            '<a class="footnote-backref" href="#fnref:footnote" rev="footnote" '
-            'title="Jump back to footnote 2 in the text">&#8617;</a></p>\n'
+            '<a class="footnote-backref" href="#fnref:footnote" rev="footnote"'
+            ' title="Jump back to footnote 2 in the text">&#8617;</a></p>\n'
             '</li>\n</ol>\n</div>')
         expected_metadata = {
             'title': 'Article with markdown containing footnotes',
@@ -194,7 +191,6 @@ class MdReaderTest(ReaderTest):
         for key, value in metadata.items():
             self.assertEqual(value, expected_metadata[key], key)
 
-
     @unittest.skipUnless(readers.Markdown, "markdown isn't installed")
     def test_article_with_file_extensions(self):
         reader = readers.MarkdownReader(settings=get_settings())
@@ -203,9 +199,9 @@ class MdReaderTest(ReaderTest):
         content, metadata = reader.read(
             _path('article_with_md_extension.md'))
         expected = (
-                "<h1>Test Markdown File Header</h1>\n"
-                "<h2>Used for pelican test</h2>\n"
-                "<p>The quick brown fox jumped over the lazy dog's back.</p>")
+            "<h1>Test Markdown File Header</h1>\n"
+            "<h2>Used for pelican test</h2>\n"
+            "<p>The quick brown fox jumped over the lazy dog's back.</p>")
         self.assertEqual(content, expected)
         # test to ensure the mkd file extension is being processed by the
         # correct reader
@@ -319,7 +315,7 @@ class AdReaderTest(ReaderTest):
     def test_article_with_asc_options(self):
         # test to ensure the ASCIIDOC_OPTIONS is being used
         reader = readers.AsciiDocReader(
-                dict(ASCIIDOC_OPTIONS=["-a revision=1.0.42"]))
+            dict(ASCIIDOC_OPTIONS=["-a revision=1.0.42"]))
         content, metadata = reader.read(_path('article_with_asc_options.asc'))
         expected = ('<hr>\n<h2><a name="_used_for_pelican_test"></a>Used for'
                     ' pelican test</h2>\n<p>version 1.0.42</p>\n'
@@ -375,7 +371,6 @@ class HTMLReaderTest(ReaderTest):
         for key, value in expected.items():
             self.assertEqual(value, page.metadata[key], key)
 
-
     def test_article_with_null_attributes(self):
         page = self.read_file(path='article_with_null_attributes.html')
 
@@ -389,4 +384,4 @@ class HTMLReaderTest(ReaderTest):
         page = self.read_file(path='article_with_uppercase_metadata.html')
         self.assertIn('category', page.metadata, 'Key should be lowercase.')
         self.assertEqual('Yeah', page.metadata.get('category'),
-                          'Value keeps cases.')
+                         'Value keeps cases.')