diff --git a/backend/project/api/tests/test_serializers.py b/backend/project/api/tests/test_serializers.py
index 883c348..e69e84b 100644
--- a/backend/project/api/tests/test_serializers.py
+++ b/backend/project/api/tests/test_serializers.py
@@ -1,7 +1,10 @@
-from django.test import TestCase
+from django.test import RequestFactory, TestCase
 
 from project.accounts.tests.factories import UserFactory
 from project.api.serializers.accounts import AccountSerializer
+from project.api.serializers.common import EndpointsSerializer, SettingsSerializer
+from project.observations.models import Area, ObservationCategory
+from project.observations.tests.factories import AreaFactory
 
 
 class AccountSerializerTestCase(TestCase):
@@ -19,3 +22,79 @@ def test_password_check_success_after_change(self):
 
         user.refresh_from_db()
         self.assertTrue(user.check_password("new_password"))
+
+
+class SettingsSerializerTestCase(TestCase):
+    def test_settings_serializer(self):
+        """Test settings serializer"""
+        self.maxDiff = None
+        AreaFactory.create_batch(5)
+        cat_root_1 = ObservationCategory.add_root(label="Root 1")
+        cat_root_2 = ObservationCategory.add_root(label="Root 2")
+        cat_root_1.add_child(label="Child 1")
+        cat_root_1.add_child(label="Child 2")
+        serializer = SettingsSerializer(
+            {
+                "areas": Area.objects.all(),
+                "categories": ObservationCategory.objects.filter(depth=1).order_by(
+                    "label"
+                ),
+                "endpoints": EndpointsSerializer().data,
+            },
+            context={"request": RequestFactory().get("/")},
+        )
+        data = {
+            "categories": [
+                {
+                    "id": cat_root_1.id,
+                    "label": cat_root_1.label,
+                    "description": "",
+                    "pictogram": None,
+                    "children": [
+                        {
+                            "children": [],
+                            "description": "",
+                            "id": child.id,
+                            "label": child.label,
+                            "pictogram": None,
+                        }
+                        for child in cat_root_1.get_children()
+                    ],
+                },
+                {
+                    "id": cat_root_2.id,
+                    "description": "",
+                    "label": cat_root_2.label,
+                    "pictogram": None,
+                    "children": [],
+                },
+            ],
+            "areas": [
+                {
+                    "id": area.id,
+                    "name": area.name,
+                    "bbox": [
+                        (area.geom.extent[0], area.geom.extent[3]),
+                        (area.geom.extent[2], area.geom.extent[1]),
+                    ],
+                }
+                for area in Area.objects.all()
+            ],
+            "endpoints": {
+                "observations": "http://testserver/api/observations/",
+                "signup": "http://testserver/api/accounts/sign-up/",
+                "token": {
+                    "token": "http://testserver/api/token/",
+                    "token_refresh": "http://testserver/api/token/refresh/",
+                    "token_verify": "http://testserver/api/token/verify/",
+                },
+                "user": {
+                    "me": "http://testserver/api/accounts/me/",
+                    "observations": "http://testserver/api/accounts/me/observations/",
+                },
+            },
+        }
+        self.assertDictEqual(
+            dict(serializer.data),
+            dict(sorted(data.items())),
+        )
diff --git a/backend/project/observations/tests.py b/backend/project/observations/tests/__init__.py
similarity index 100%
rename from backend/project/observations/tests.py
rename to backend/project/observations/tests/__init__.py
diff --git a/backend/project/observations/tests/factories.py b/backend/project/observations/tests/factories.py
new file mode 100644
index 0000000..e41a7d9
--- /dev/null
+++ b/backend/project/observations/tests/factories.py
@@ -0,0 +1,50 @@
+import factory.fuzzy
+from django.contrib.gis.geos import Polygon
+from factory import random
+from faker import Faker
+from faker.providers import geo
+
+from project.observations.models import Area, ObservationCategory
+
+fake = Faker()
+fake.add_provider(geo)
+
+
+class FuzzyPolygon(factory.fuzzy.BaseFuzzyAttribute):
+    """Yields random polygon"""
+
+    def __init__(self, length=None, **kwargs):
+        if length is None:
+            length = random.randgen.randrange(3, 20, 1)
+        if length < 3:
+            raise Exception("Polygon needs to be 3 or greater in length.")
+        self.length = length
+        super().__init__(**kwargs)
+
+    def get_random_coords(self):
+        return (
+            fake.longitude(),
+            fake.latitude(),
+        )
+
+    def fuzz(self):
+        prefix = suffix = self.get_random_coords()
+        coords = [self.get_random_coords() for __ in range(self.length - 1)]
+        return Polygon([prefix] + coords + [suffix])
+
+
+class AreaFactory(factory.django.DjangoModelFactory):
+    class Meta:
+        model = Area
+
+    name = factory.Faker("city")
+    geom = FuzzyPolygon()
+    description = factory.Faker("text")
+
+
+class CategoryFactory(factory.django.DjangoModelFactory):
+    class Meta:
+        model = ObservationCategory
+
+    label = factory.Faker("word")
+    description = factory.Faker("text")