diff --git a/specs/test_html.py b/specs/test_html.py
new file mode 100644
index 0000000..f03d4c2
--- /dev/null
+++ b/specs/test_html.py
@@ -0,0 +1,60 @@
+
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
+
+
+from isso.core import Config
+from isso.utils import html
+
+
+class TestHTML(unittest.TestCase):
+
+    def test_markdown(self):
+        convert = html.Markdown(extensions=())
+        examples = [
+            ("*Ohai!*", "<p><em>Ohai!</em></p>"),
+            ("<em>Hi</em>", "<p><em>Hi</em></p>"),
+            ("http://example.org/", '<p>http://example.org/</p>')]
+
+        for (input, expected) in examples:
+            self.assertEqual(convert(input), expected)
+
+    def test_markdown_extensions(self):
+        convert = html.Markdown(extensions=("strikethrough", "superscript"))
+        examples = [
+            ("~~strike~~ through", "<p><del>strike</del> through</p>"),
+            ("sup^(script)", "<p>sup<sup>script</sup></p>")]
+
+        for (input, expected) in examples:
+            self.assertEqual(convert(input), expected)
+
+    @unittest.skipIf(html.html5lib_version == "0.95", "backport")
+    def test_sanitizer(self):
+        sanitizer = html.Sanitizer(elements=[], attributes=[])
+        examples = [
+            ('Look: <img src="..." />', 'Look: '),
+            ('<a href="http://example.org/">Ha</a>', '<a href="http://example.org/">Ha</a>'),
+            ('<a href="sms:+1234567890">Ha</a>', '<a>Ha</a>'),
+            ('<p style="visibility: hidden;">Test</p>', '<p>Test</p>'),
+            ('<script>alert("Onoe")</script>', 'alert("Onoe")')]
+
+        for (input, expected) in examples:
+            self.assertEqual(html.sanitize(sanitizer, input), expected)
+
+    @unittest.skipIf(html.html5lib_version == "0.95", "backport")
+    def test_sanitizer_extensions(self):
+        sanitizer = html.Sanitizer(elements=["img"], attributes=["src"])
+        examples = [
+            ('<img src="cat.gif" />', '<img src="cat.gif">'),
+            ('<script src="doge.js"></script>', '')]
+
+        for (input, expected) in examples:
+            self.assertEqual(html.sanitize(sanitizer, input), expected)
+
+    def test_render(self):
+        conf = Config.load(None).section("markup")
+        renderer = html.Markup(conf).render
+        self.assertEqual(renderer("http://example.org/ and sms:+1234567890"),
+                         '<p><a href="http://example.org/">http://example.org/</a> and sms:+1234567890</p>')