diff --git a/tapir/coop/tests/factories.py b/tapir/coop/tests/factories.py
index dd52bf068..2a84ab31f 100644
--- a/tapir/coop/tests/factories.py
+++ b/tapir/coop/tests/factories.py
@@ -5,6 +5,7 @@
 from tapir.accounts.tests.factories.user_data_factory import UserDataFactory
 from tapir.coop.config import COOP_SHARE_PRICE
 from tapir.coop.models import ShareOwnership, ShareOwner, DraftUser, MembershipPause
+from tapir.statistics.models import PurchaseBasket
 
 
 class ShareOwnershipFactory(factory.django.DjangoModelFactory):
@@ -67,3 +68,14 @@ class Meta:
     )
     description = factory.Faker("bs")
     share_owner = factory.SubFactory(ShareOwnerFactory)
+
+
+class PurchaseBasketFactory(factory.django.DjangoModelFactory):
+    class Meta:
+        model = PurchaseBasket
+
+    cashier = 1
+    purchase_counter = 1
+    first_net_amount = 0
+    second_net_amount = 0
+    discount = 0
diff --git a/tapir/statistics/tests/test_main_statistics_purchases_evolution.py b/tapir/statistics/tests/test_main_statistics_purchases_evolution.py
new file mode 100644
index 000000000..ddebac0b2
--- /dev/null
+++ b/tapir/statistics/tests/test_main_statistics_purchases_evolution.py
@@ -0,0 +1,74 @@
+import datetime
+
+from django.urls import reverse
+
+from tapir.coop.tests.factories import PurchaseBasketFactory
+from tapir.statistics.models import ProcessedPurchaseFiles
+from tapir.utils.tests_utils import TapirFactoryTestBase, mock_timezone_now
+
+
+class TestBasketSumEvolutionData(TapirFactoryTestBase):
+    NOW = datetime.datetime(year=2023, month=4, day=1, hour=12)
+
+    def test_get_basket_sums_per_month(self):
+        user = self.login_as_normal_user()
+        mock_timezone_now(self, self.NOW)
+
+        self.create_payment(
+            date=datetime.date(year=2023, month=1, day=1),
+            amount=10.00,
+            source_file=self.getSourceFile(),
+            user=user,
+        )
+        self.create_payment(
+            date=datetime.date(year=2023, month=4, day=1),
+            amount=20.00,
+            source_file=self.getSourceFile(),
+            user=user,
+        )
+        self.create_payment(
+            date=datetime.date(year=2023, month=4, day=1),
+            amount=10.50,
+            source_file=self.getSourceFile(),
+            user=user,
+        )
+
+        response = self.client.get(
+            reverse("statistics:basket_sum_evolution_json", kwargs={"pk": user.pk}),
+        )
+
+        self.assertEqual(response.status_code, 200)
+        self.assertEqual(  # assert months
+            response.json()["data"]["labels"],
+            ["2023-01", "2023-02", "2023-03", "2023-04"],
+        )
+        self.assertEqual(  # assert values
+            response.json()["data"]["datasets"][0]["data"], [10.0, 0, 0, 30.5]
+        )
+
+    def test_requires_permissions(self):
+        user = self.login_as_normal_user()
+
+        another_user_pk = user.pk + 1
+        response = self.client.get(
+            reverse(
+                "statistics:basket_sum_evolution_json", kwargs={"pk": another_user_pk}
+            ),
+        )
+        self.assertEqual(response.status_code, 403)
+
+    @staticmethod
+    def create_payment(date, amount, source_file, user):
+        PurchaseBasketFactory.create(
+            purchase_date=date,
+            gross_amount=amount,
+            source_file=source_file,
+            tapir_user=user,
+        )
+
+    @staticmethod
+    def getSourceFile():
+        return ProcessedPurchaseFiles.objects.create(
+            file_name=f"test_basket_file",
+            processed_on=datetime.datetime.now(),
+        )