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

tests/formatters/tests_unwrap_formatter.py

@@ -0,0 +1,23 @@
+from unittest import TestCase
+from bs4 import BeautifulSoup
+from html_to_django.formatters import unwrap_formatter
+
+
+class UnwrapTests(TestCase):
+    def test_basic(self) -> None:
+        soup = BeautifulSoup('<div dj-unwrap="true"><div>Test</div></div>', "html.parser")
+        unwrap_formatter.format(soup)
+        expected_result = "<div>Test</div>"
+        self.assertEqual(expected_result, str(soup))
+
+    def test_empty(self) -> None:
+        soup = BeautifulSoup('<div dj-unwrap="true"></div>', "html.parser")
+        unwrap_formatter.format(soup)
+        expected_result = ""
+        self.assertEqual(expected_result, str(soup))
+
+    def test_with_unwrap_inside(self) -> None:
+        soup = BeautifulSoup('<div dj-unwrap="true"><div dj-unwrap="true">Inner Test</div></div>', "html.parser")
+        unwrap_formatter.format(soup)
+        expected_result = "Inner Test"
+        self.assertEqual(expected_result, str(soup))