unittests for priority

atdb/taskdatabase/tests/test_priority.py

+from django.test import TestCase
+from django.urls import reverse
+from django.contrib.auth.models import User
+from django.contrib.auth.decorators import login_required
+from django.test import Client
+
+from taskdatabase.models import Task, Workflow
+
+class ChangePriorityViewTest(TestCase):
+    def setUp(self):
+        # Create a test user
+        self.user = User.objects.create_user(username='testuser', password='testpassword')
+
+        # Create a test workflow
+        workflow_requantisation = Workflow(workflow_uri="psrfits_requantisation")
+        workflow_requantisation.save()
+
+        # Create a test task
+        self.task = Task.objects.create(filter='a',sas_id=54321, status='stored', workflow=workflow_requantisation, priority=1)
+        self.task = Task.objects.create(filter='b',sas_id=54321, status='stored', workflow=workflow_requantisation, priority=1)
+
+
+        # Login the test user
+        self.client = Client()
+        self.client.login(username='testuser', password='testpassword')
+
+    def test_change_priority(self):
+        # Set up the URL for the view
+        url = reverse('task-change-priority', kwargs={'pk': self.task.pk, 'priority_change': 2, 'page': 1})
+
+        # Call the view using the client
+        response = self.client.get(url)
+
+        # Check if the task priority has been updated
+        updated_task = Task.objects.get(pk=self.task.pk)
+        self.assertEqual(updated_task.priority, 3)
+
+
+    def test_change_priority_negative_priority(self):
+        # Set up the URL for the view with a negative priority_change value
+        url = reverse('task-change-priority', kwargs={'pk': self.task.pk, 'priority_change': -2, 'page': 0})
+
+        # Call the view using the client
+        response = self.client.get(url)
+
+        # Check if the task priority is set to 0 when priority becomes negative
+        updated_task = Task.objects.get(pk=self.task.pk)
+        self.assertEqual(updated_task.priority, 0)
+
+    def test_change_priority_sasid(self):
+        # Set up the URL for the view
+        url = reverse('task-change-priority-sasid', kwargs={'pk': self.task.pk, 'priority_change': 2, 'page': 1})
+
+        # Call the view using the client
+        response = self.client.get(url)
+
+        # Check if the task priority has been updated
+        updated_task = Task.objects.get(pk=self.task.pk)
+        self.assertEqual(updated_task.priority, 3)
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