diff --git a/annotations_project/annotations/tests.py b/annotations_project/annotations/tests.py
index 7ce503c2..7d511757 100644
--- a/annotations_project/annotations/tests.py
+++ b/annotations_project/annotations/tests.py
@@ -1,3 +1,80 @@
 from django.test import TestCase
+from unittest.mock import patch, MagicMock
+from rest_framework.test import APIRequestFactory, APITestCase, force_authenticate
+from rest_framework import status
+from .models import *
+from .serializers import AnnotationSerializer
+from .views import AnnotationViewSet
+from django.contrib.auth.models import User
+from django.urls import reverse
+from django.conf import settings
 
-# Create your tests here.
+class AnnotationViewSetIntegrationTests(APITestCase):
+    def setUp(self):
+        self.user = User.objects.create_user(username='testuser', password='testpassword')
+        
+        # Create related instances for Annotation
+        self.body = Body.objects.create(
+            type="TextualBody",
+            value="This info is misleading imo",
+            format="text/plain",
+            language="en"
+        )
+        self.target = Target.objects.create(
+            type="TextPositionSelector",
+            start=10,
+            end=50,
+            source="http://example.com/posts/1"
+        )
+        self.creator = Creator.objects.create(
+            type="Person",
+            name="john"
+        )
+        self.annotation = Annotation.objects.create(
+            body=self.body,
+            target=self.target,
+            creator=self.creator
+        )
+        self.client.login(username='testuser', password='testpassword')
+
+    def test_create_annotation(self):
+        """Test creating a new annotation."""
+        url = reverse('annotation-list')
+        data = {
+            "body": {
+                "type": "TextualBody",
+                "value": "This info is misleading imo",
+                "format": "text/plain",
+                "language": "en"
+            },
+            "target": {
+                "type": "TextPositionSelector",
+                "start": 10,
+                "end": 50,
+                "source": "http://example.com/posts/1"
+            },
+            "creator": {
+                "type": "Person",
+                "name": "john"
+            }
+        }
+        response = self.client.post(url, data, format='json')
+
+        self.assertEqual(response.status_code, status.HTTP_201_CREATED)
+        self.assertEqual(response.data["target"]["source"], data["target"]["source"])
+
+    def test_get_annotations_by_source(self):
+        """Test retrieving annotations by source."""
+        url = reverse('annotation-get-by-posts', kwargs={"source": 1})
+        response = self.client.get(url)
+
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(response.data[0]["target"]["source"], self.target.source)
+
+    def test_get_annotations_by_source_not_found(self):
+        """Test retrieving annotations by source when none are found."""
+        url = reverse('annotation-get-by-posts', kwargs={"source": 999})
+        response = self.client.get(url)
+
+        self.assertEqual(response.status_code, status.HTTP_404_NOT_FOUND)
+        self.assertEqual(response.data['message'], "No annotations found for the specified source.")
\ No newline at end of file
diff --git a/backend/marketfeed/tests.py b/backend/marketfeed/tests.py
index 167a6f15..bf7da2c2 100644
--- a/backend/marketfeed/tests.py
+++ b/backend/marketfeed/tests.py
@@ -1,4 +1,13 @@
 
+from django.test import TestCase
+from rest_framework.test import APITestCase, APIClient
+from rest_framework import status
+from unittest.mock import patch, MagicMock
+from django.urls import reverse
+from django.contrib.auth.models import User
+from .models import *
+from .serializers import *
+import requests
 from django.conf import settings
 from django.urls import reverse
 from rest_framework import status
@@ -10,6 +19,41 @@
 from marketfeed.models import *
 from unittest.mock import patch
 
+
+class PortfolioViewSetTests(APITestCase):
+    def setUp(self):
+        self.user = User.objects.create_user(username="testuser", password="testpassword")
+        self.portfolio = Portfolio.objects.create(name="Tech Portfolio", user_id=self.user)
+        self.client.login(username="testuser", password="testpassword")
+
+    def test_list_portfolios(self):
+        url = reverse('portfolio-list')
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+
+class PostViewSetTests(APITestCase):
+    def setUp(self):
+        self.user = User.objects.create_user(username="testuser", password="testpassword")
+        self.post = Post.objects.create(title="Test Post", content="Test content", author=self.user)
+        self.client.login(username="testuser", password="testpassword")
+
+    def test_list_posts(self):
+        url = reverse('post-list')
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+    def test_retrieve_post(self):
+        url = reverse('post-detail', args=[self.post.id])
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+
+    def test_delete_post(self):
+        url = reverse('post-detail', args=[self.post.id])
+        response = self.client.delete(url)
+        self.assertEqual(response.status_code, status.HTTP_204_NO_CONTENT)
+
+
 class CurrencyViewSetTest(APITestCase):
     
     def setUp(self):