diff --git a/.coveragerc b/.coveragerc
new file mode 100644
index 000000000..4f50efc40
--- /dev/null
+++ b/.coveragerc
@@ -0,0 +1,20 @@
+[run]
+branch = True
+source =
+  searx/engines
+  searx/__init__.py
+  searx/autocomplete.py
+  searx/https_rewrite.py
+  searx/languages.py
+  searx/search.py
+  searx/testing.py
+  searx/utils.py
+  searx/webapp.py
+
+[report]
+show_missing = True
+exclude_lines =
+    if __name__ == .__main__.:
+
+[html]
+directory = coverage
diff --git a/Makefile b/Makefile
index 2ef352eb1..f56060868 100644
--- a/Makefile
+++ b/Makefile
@@ -29,9 +29,9 @@ flake8: .installed.cfg
 	@bin/flake8 ./searx/
 
 coverage: .installed.cfg
-	@bin/coverage run --source=./searx/ --branch bin/test
-	@bin/coverage report --show-missing
-	@bin/coverage html --directory ./coverage
+	@bin/coverage run bin/test
+	@bin/coverage report
+	@bin/coverage html
 
 production: bin/buildout production.cfg setup.py
 	bin/buildout -c production.cfg $(options)
diff --git a/searx/tests/test_utils.py b/searx/tests/test_utils.py
new file mode 100644
index 000000000..817fd4372
--- /dev/null
+++ b/searx/tests/test_utils.py
@@ -0,0 +1,69 @@
+import mock
+from searx.testing import SearxTestCase
+from searx import utils
+
+
+class TestUtils(SearxTestCase):
+
+    def test_gen_useragent(self):
+        self.assertIsInstance(utils.gen_useragent(), str)
+        self.assertIsNotNone(utils.gen_useragent())
+        self.assertTrue(utils.gen_useragent().startswith('Mozilla'))
+
+    def test_highlight_content(self):
+        self.assertEqual(utils.highlight_content(0, None), None)
+        self.assertEqual(utils.highlight_content(None, None), None)
+        self.assertEqual(utils.highlight_content('', None), None)
+        self.assertEqual(utils.highlight_content(False, None), None)
+
+        contents = [
+            '<html></html>'
+            'not<'
+        ]
+        for content in contents:
+            self.assertEqual(utils.highlight_content(content, None), content)
+
+        content = 'a'
+        query = 'test'
+        self.assertEqual(utils.highlight_content(content, query), content)
+        query = 'a test'
+        self.assertEqual(utils.highlight_content(content, query), content)
+
+
+class TestHTMLTextExtractor(SearxTestCase):
+
+    def setUp(self):
+        self.html_text_extractor = utils.HTMLTextExtractor()
+
+    def test__init__(self):
+        self.assertEqual(self.html_text_extractor.result, [])
+
+    def test_handle_charref(self):
+        self.html_text_extractor.handle_charref('xF')
+        self.assertIn(u'\x0f', self.html_text_extractor.result)
+        self.html_text_extractor.handle_charref('XF')
+        self.assertIn(u'\x0f', self.html_text_extractor.result)
+
+        self.html_text_extractor.handle_charref('97')
+        self.assertIn(u'a', self.html_text_extractor.result)
+
+    def test_handle_entityref(self):
+        entity = 'test'
+        self.html_text_extractor.handle_entityref(entity)
+        self.assertIn(entity, self.html_text_extractor.result)
+
+
+class TestUnicodeWriter(SearxTestCase):
+
+    def setUp(self):
+        self.unicode_writer = utils.UnicodeWriter(mock.MagicMock())
+
+    def test_write_row(self):
+        row = [1, 2, 3]
+        self.assertEqual(self.unicode_writer.writerow(row), None)
+
+    def test_write_rows(self):
+        self.unicode_writer.writerow = mock.MagicMock()
+        rows = [1, 2, 3]
+        self.unicode_writer.writerows(rows)
+        self.assertEqual(self.unicode_writer.writerow.call_count, len(rows))