tests/moderation: add tests for budgeting moderation form

tests/moderationtasks/conftest.py

@@ -1,5 +1,8 @@
 from pytest_factoryboy import register
 
+from meinberlin.test.factories.budgeting import ProposalFactory
+
 from .factories import ModerationTaskFactory
 
 register(ModerationTaskFactory)
+register(ProposalFactory)

tests/moderationtasks/test_mixins.py

@@ -0,0 +1,36 @@
+import pytest
+from django import forms
+
+from meinberlin.apps.budgeting.models import Proposal
+from meinberlin.apps.moderationtasks.mixins import TasksAddableFieldMixin
+
+
+class TaskForm(TasksAddableFieldMixin, forms.ModelForm):
+
+    class Meta:
+        model = Proposal
+        fields = ['completed_tasks']
+
+
+@pytest.mark.django_db
+def test_choice(module, moderation_task_factory, proposal_factory):
+    task1 = moderation_task_factory(module=module)
+    task2 = moderation_task_factory()
+    proposal = proposal_factory(module=module)
+
+    form = TaskForm(instance=proposal)
+    choice = form.fields['completed_tasks'].queryset.all()
+    assert task1 in choice
+    assert task2 not in choice
+
+
+@pytest.mark.django_db
+def test_show_labels(module, moderation_task_factory, proposal_factory):
+    proposal = proposal_factory(module=module)
+    moderation_task_factory()
+    form = TaskForm(instance=proposal)
+    assert not form.show_tasks()
+
+    moderation_task_factory(module=module)
+    form = TaskForm(instance=proposal)
+    assert form.show_tasks()