added tests for all formatters; stylecheck workflow now also checks in tests now

tests/formatters/tests_block_formatter.py

@@ -4,17 +4,20 @@ from html_to_django.formatters import block_formatter
 
 
 class BlockTests(TestCase):
-    def test_basic(self):
+    def test_basic(self) -> None:
         soup = BeautifulSoup('<div dj-block="content"></div>', "html.parser")
         block_formatter.format(soup)
-        self.assertEqual("{% block content %}{% endblock %}", str(soup))
-    
-    def test_with_content(self):
+        expected_result = "{% block content %}{% endblock %}"
+        self.assertEqual(expected_result, str(soup))
+
+    def test_with_content(self) -> None:
         soup = BeautifulSoup('<div dj-block="content">Test</div>', "html.parser")
         block_formatter.format(soup)
-        self.assertEqual("{% block content %}Test{% endblock %}", str(soup))
-    
-    def test_with_block_inside(self):
+        expected_result = "{% block content %}Test{% endblock %}"
+        self.assertEqual(expected_result, str(soup))
+
+    def test_with_block_inside(self) -> None:
         soup = BeautifulSoup('<div dj-block="content"><div dj-block="inner">Test</div></div>', "html.parser")
         block_formatter.format(soup)
-        self.assertEqual("{% block content %}{% block inner %}Test{% endblock %}{% endblock %}", str(soup))
+        expected_result = "{% block content %}{% block inner %}Test{% endblock %}{% endblock %}"
+        self.assertEqual(expected_result, str(soup))