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

tests/formatters/tests_for_formatter.py

@@ -0,0 +1,24 @@
+from unittest import TestCase
+from bs4 import BeautifulSoup
+from html_to_django.formatters import for_formatter
+
+
+class ForTests(TestCase):
+    def test_basic(self) -> None:
+        soup = BeautifulSoup('<div dj-for="item in list"></div>', "html.parser")
+        for_formatter.format(soup)
+        expected_result = "{% for item in list %}{% endfor %}"
+        self.assertEqual(expected_result, str(soup))
+
+    def test_with_content(self) -> None:
+        soup = BeautifulSoup('<div dj-for="item in list">Test</div>', "html.parser")
+        for_formatter.format(soup)
+        expected_result = "{% for item in list %}Test{% endfor %}"
+        self.assertEqual(expected_result, str(soup))
+
+    def test_with_for_inside(self) -> None:
+        soup = BeautifulSoup('<div dj-for="item in list"><div dj-for="subitem in sublist">Test</div></div>',
+                             "html.parser")
+        for_formatter.format(soup)
+        expected_result = "{% for item in list %}{% for subitem in sublist %}Test{% endfor %}{% endfor %}"
+        self.assertEqual(expected_result, str(soup))