diff --git a/runtests.py b/runtests.py
deleted file mode 100644
index 409268a..0000000
--- a/runtests.py
+++ /dev/null
@@ -1,5 +0,0 @@
-#!/usr/bin/env python
-from nose.core import run, collector
-
-if __name__ == '__main__':
-    run()
diff --git a/setup.py b/setup.py
index 22e3edd..6714b8d 100644
--- a/setup.py
+++ b/setup.py
@@ -2,6 +2,7 @@
 import codecs
 import os
 from setuptools import setup, find_packages
+from setuptools.command.test import test as TestCommand
 
 
 read = lambda filepath: codecs.open(filepath, 'r', 'utf-8').read()
@@ -12,6 +13,18 @@ execfile(os.path.join(os.path.dirname(__file__), 'markdownify', 'pkgmeta.py'),
          pkgmeta)
 
 
+class PyTest(TestCommand):
+    def finalize_options(self):
+        TestCommand.finalize_options(self)
+        self.test_args = ['tests', '-s']
+        self.test_suite = True
+
+    def run_tests(self):
+        import pytest
+        errno = pytest.main(self.test_args)
+        raise SystemExit(errno)
+
+
 setup(
     name='markdownify',
     description='Convert HTML to markdown.',
@@ -25,8 +38,7 @@ setup(
     zip_safe=False,
     include_package_data=True,
     tests_require=[
-        'nose',
-        'unittest2',
+        'pytest',
     ],
     install_requires=[
         'lxml',
@@ -44,5 +56,7 @@ setup(
         'Topic :: Utilities'
     ],
     setup_requires=[],
-    test_suite='runtests.collector',
+    cmdclass={
+        'test': PyTest,
+    },
 )
diff --git a/tests.py b/tests.py
deleted file mode 100644
index 57c2277..0000000
--- a/tests.py
+++ /dev/null
@@ -1,123 +0,0 @@
-import unittest
-from markdownify import markdownify as md
-
-
-class BasicTests(unittest.TestCase):
-
-    def test_single_tag(self):
-        self.assertEqual(md('<span>Hello</span>'), 'Hello')
-
-    def test_soup(self):
-        self.assertEqual(md('<div><span>Hello</div></span>'), 'Hello')
-
-    def test_whitespace(self):
-        self.assertEqual(md(' a  b \n\n c '), ' a b c ')
-
-
-class ArgTests(unittest.TestCase):
-
-    def test_strip(self):
-        self.assertEqual(
-            md('<a href="https://github.com/matthewwithanm">Some Text</a>', strip=['a']),
-            'Some Text')
-
-    def test_do_not_strip(self):
-        self.assertEqual(
-            md('<a href="https://github.com/matthewwithanm">Some Text</a>', strip=[]),
-            '[Some Text](https://github.com/matthewwithanm)')
-
-    def test_convert(self):
-        self.assertEqual(
-            md('<a href="https://github.com/matthewwithanm">Some Text</a>', convert=['a']),
-            '[Some Text](https://github.com/matthewwithanm)')
-
-    def test_do_not_convert(self):
-        self.assertEqual(
-            md('<a href="https://github.com/matthewwithanm">Some Text</a>', convert=[]),
-            'Some Text')
-
-
-class EscapeTests(unittest.TestCase):
-
-    def test_underscore(self):
-        self.assertEqual(md('_hey_dude_'), '\_hey\_dude\_')
-
-    def test_xml_entities(self):
-        self.assertEqual(md('&amp;'), '&')
-
-    def test_named_entities(self):
-        self.assertEqual(md('&raquo;'), u'\xbb')
-
-    def test_hexadecimal_entities(self):
-        # This looks to be a bug in BeautifulSoup (fixed in bs4) that we have to work around.
-        self.assertEqual(md('&#x27;'), '\x27')
-
-    def test_single_escaping_entities(self):
-        self.assertEqual(md('&amp;amp;'), '&amp;')
-
-
-class ConversionTests(unittest.TestCase):
-
-    def test_a(self):
-        self.assertEqual(
-            md('<a href="http://google.com">Google</a>'),
-            '[Google](http://google.com)'
-        )
-
-    def test_a_with_title(self):
-        self.assertEqual(
-            md('<a href="http://google.com" title="The &quot;Goog&quot;">Google</a>'),
-            r'[Google](http://google.com "The \"Goog\"")'
-        )
-
-    def test_b(self):
-        self.assertEqual(md('<b>Hello</b>'), '**Hello**')
-
-    def test_blockquote(self):
-        self.assertEqual(md('<blockquote>Hello</blockquote>').strip(), '> Hello')
-
-    def test_nested_blockquote(self):
-        self.assertEqual(
-            md('<blockquote>And she was like <blockquote>Hello</blockquote></blockquote>').strip(),
-            '> And she was like \n> > Hello'
-        )
-
-    def test_br(self):
-        self.assertEqual(md('a<br />b<br />c'), 'a  \nb  \nc')
-
-    def test_em(self):
-        self.assertEqual(md('<em>Hello</em>'), '*Hello*')
-
-    def test_h1(self):
-        self.assertEqual(md('<h1>Hello</h1>'), 'Hello\n=====\n\n')
-
-    def test_h2(self):
-        self.assertEqual(md('<h2>Hello</h2>'), 'Hello\n-----\n\n')
-
-    def test_hn(self):
-        self.assertEqual(md('<h3>Hello</h3>'), '### Hello\n\n')
-        self.assertEqual(md('<h6>Hello</h6>'), '###### Hello\n\n')
-
-    def test_i(self):
-        self.assertEqual(md('<i>Hello</i>'), '*Hello*')
-
-    def test_ol(self):
-        self.assertEqual(md('<ol><li>a</li><li>b</li></ol>'), '1. a\n2. b\n')
-
-    def test_p(self):
-        self.assertEqual(md('<p>hello</p>'), 'hello\n\n')
-
-    def test_strong(self):
-        self.assertEqual(md('<strong>Hello</strong>'), '**Hello**')
-
-    def test_ul(self):
-        self.assertEqual(md('<ul><li>a</li><li>b</li></ul>'), '* a\n* b\n')
-
-
-class AdvancedTests(unittest.TestCase):
-
-    def test_nested(self):
-        self.assertEqual(
-            md('<p>This is an <a href="http://example.com/">example link</a>.</p>'),
-            'This is an [example link](http://example.com/).\n\n'
-        )
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test_advanced.py b/tests/test_advanced.py
new file mode 100644
index 0000000..4c480d7
--- /dev/null
+++ b/tests/test_advanced.py
@@ -0,0 +1,6 @@
+from markdownify import markdownify as md
+
+
+def test_nested():
+    text = md('<p>This is an <a href="http://example.com/">example link</a>.</p>')
+    assert text == 'This is an [example link](http://example.com/).\n\n'
diff --git a/tests/test_args.py b/tests/test_args.py
new file mode 100644
index 0000000..ebce4a8
--- /dev/null
+++ b/tests/test_args.py
@@ -0,0 +1,25 @@
+"""
+Test whitelisting/blacklisting of specific tags.
+
+"""
+from markdownify import markdownify as md
+
+
+def test_strip():
+    text = md('<a href="https://github.com/matthewwithanm">Some Text</a>', strip=['a'])
+    assert text == 'Some Text'
+
+
+def test_do_not_strip():
+    text = md('<a href="https://github.com/matthewwithanm">Some Text</a>', strip=[])
+    assert text == '[Some Text](https://github.com/matthewwithanm)'
+
+
+def test_convert():
+    text = md('<a href="https://github.com/matthewwithanm">Some Text</a>', convert=['a'])
+    assert text == '[Some Text](https://github.com/matthewwithanm)'
+
+
+def test_do_not_convert():
+    text = md('<a href="https://github.com/matthewwithanm">Some Text</a>', convert=[])
+    assert text == 'Some Text'
diff --git a/tests/test_basic.py b/tests/test_basic.py
new file mode 100644
index 0000000..78775b6
--- /dev/null
+++ b/tests/test_basic.py
@@ -0,0 +1,13 @@
+from markdownify import markdownify as md
+
+
+def test_single_tag():
+    assert md('<span>Hello</span>') == 'Hello'
+
+
+def test_soup():
+    assert md('<div><span>Hello</div></span>') == 'Hello'
+
+
+def test_whitespace():
+    assert md(' a  b \n\n c ') == ' a b c '
diff --git a/tests/test_conversions.py b/tests/test_conversions.py
new file mode 100644
index 0000000..e0922dd
--- /dev/null
+++ b/tests/test_conversions.py
@@ -0,0 +1,64 @@
+from markdownify import markdownify as md
+
+
+def test_a():
+    assert md('<a href="http://google.com">Google</a>') == '[Google](http://google.com)'
+
+
+def test_a_with_title():
+    text = md('<a href="http://google.com" title="The &quot;Goog&quot;">Google</a>')
+    assert text == r'[Google](http://google.com "The \"Goog\"")'
+
+
+def test_b():
+    assert md('<b>Hello</b>') == '**Hello**'
+
+
+def test_blockquote():
+    assert md('<blockquote>Hello</blockquote>').strip() == '> Hello'
+
+
+def test_nested_blockquote():
+    text = md('<blockquote>And she was like <blockquote>Hello</blockquote></blockquote>').strip()
+    assert text == '> And she was like \n> > Hello'
+
+
+def test_br():
+    assert md('a<br />b<br />c') == 'a  \nb  \nc'
+
+
+def test_em():
+    assert md('<em>Hello</em>') == '*Hello*'
+
+
+def test_h1():
+    assert md('<h1>Hello</h1>') == 'Hello\n=====\n\n'
+
+
+def test_h2():
+    assert md('<h2>Hello</h2>') == 'Hello\n-----\n\n'
+
+
+def test_hn():
+    assert md('<h3>Hello</h3>') == '### Hello\n\n'
+    assert md('<h6>Hello</h6>') == '###### Hello\n\n'
+
+
+def test_i():
+    assert md('<i>Hello</i>') == '*Hello*'
+
+
+def test_ol():
+    assert md('<ol><li>a</li><li>b</li></ol>') == '1. a\n2. b\n'
+
+
+def test_p():
+    assert md('<p>hello</p>') == 'hello\n\n'
+
+
+def test_strong():
+    assert md('<strong>Hello</strong>') == '**Hello**'
+
+
+def test_ul():
+    assert md('<ul><li>a</li><li>b</li></ul>') == '* a\n* b\n'
diff --git a/tests/test_escaping.py b/tests/test_escaping.py
new file mode 100644
index 0000000..9b0d4fa
--- /dev/null
+++ b/tests/test_escaping.py
@@ -0,0 +1,22 @@
+from markdownify import markdownify as md
+
+
+def test_underscore():
+    assert md('_hey_dude_') == '\_hey\_dude\_'
+
+
+def test_xml_entities():
+    assert md('&amp;') == '&'
+
+
+def test_named_entities():
+    assert md('&raquo;') == u'\xbb'
+
+
+def test_hexadecimal_entities():
+    # This looks to be a bug in BeautifulSoup (fixed in bs4) that we have to work around.
+    assert md('&#x27;') == '\x27'
+
+
+def test_single_escaping_entities():
+    assert md('&amp;amp;') == '&amp;'