diff --git a/sherlock/tests.py b/sherlock/tests.py
index b89bace..52a7d86 100644
--- a/sherlock/tests.py
+++ b/sherlock/tests.py
@@ -1,6 +1,9 @@
-from django.test import TestCase
+from datetime import datetime
 
-from .models import Category, Gauge
+from django.test import TestCase
+from django.utils import timezone
+
+from .models import Category, Gauge, Mesure
 
 class TestCategoryModel(TestCase):
 
@@ -32,4 +35,11 @@ class TestGaugeModel(TestCase):
         self.assertEqual(gauge_4, gauges_list[1])
         self.assertEqual(gauge_2, gauges_list[2])
         self.assertEqual(gauge_3, gauges_list[3])
+    
+    def test_category_property(self):
+        cat = Category.objects.create(name='eau')
+        gauge = Gauge.objects.create(serial_number='undefined', category=cat)
+        mesure = Mesure.objects.create(moment=timezone.make_aware(datetime.now()), value=0.001, gauge=gauge)
+
+        self.assertEqual(cat, mesure.category)