Fix type hints for assertFormError and assertForSetError

Fix #1137.

Author: nektor211

AUTHORS

@@ -20,3 +20,4 @@ Nicolas Delaby <ticosax@free.fr>
 Hasan Ramezani <hasan.r67@gmail.com>
 Michael Howitz
 Mark Gensler
+Pavel Taufer

pytest_django/asserts.py

@@ -54,6 +54,7 @@ def assertion_func(*args, **kwargs):
 
 
 if TYPE_CHECKING:
+    from django import forms
     from django.http.response import HttpResponseBase
 
     def assertRedirects(
@@ -93,17 +94,15 @@ def assertNotContains(
         ...
 
     def assertFormError(
-        response: HttpResponseBase,
-        form: str,
+        form: forms.BaseForm,
         field: str | None,
         errors: str | Sequence[str],
         msg_prefix: str = ...,
     ) -> None:
         ...
 
-    def assertFormsetError(
-        response: HttpResponseBase,
-        formset: str,
+    def assertFormSetError(
+        formset: forms.BaseFormSet,
         form_index: int | None,
         field: str | None,
         errors: str | Sequence[str],