Merge pull request #112 from aismail/f/#87-create-assignment-form

F/#87 create assignment form

vmc_backend/forms/assignment_form.py

@@ -0,0 +1,8 @@
+from vmc_backend.core.base_model_form import BaseModelForm
+from vmc_backend.models import Assignment
+
+
+class AssignmentForm(BaseModelForm):
+    class Meta:
+        model = Assignment
+

vmc_backend/tests/test_assignment_form.py

@@ -0,0 +1,22 @@
+from django.forms.models import model_to_dict
+
+from vmc_backend.forms.assignment_form import AssignmentForm
+from vmc_backend.tests.base_model_form_test_case import BaseModelFormTestCase
+from vmc_backend.factories import (AssignmentFactory, SubjectFactory)
+
+
+class TestAssignmentForm(BaseModelFormTestCase):
+    def test_subject_exists(self):
+        subject = SubjectFactory()
+        assignment = AssignmentFactory.build(subject=subject)
+        subject.delete()
+        form = AssignmentForm(model_to_dict(assignment))
+        self.assertFalse(form.is_valid())
+        self.assertTrue(('subject') in form.errors.keys())
+
+    def test_working_for_correct_data(self):
+        subject = SubjectFactory()
+        assignment = AssignmentFactory.build(subject=subject)
+        form = AssignmentForm(model_to_dict(assignment))
+        form.full_clean()
+        self.assertTrue(form.is_valid())