diff --git a/tests/aggregation/tests.py b/tests/aggregation/tests.py
index 618ab98369..f92c140ca7 100644
--- a/tests/aggregation/tests.py
+++ b/tests/aggregation/tests.py
@@ -2366,16 +2366,12 @@ class JSONArrayAggTests(TestCase):
     @classmethod
     def setUpTestData(cls):
         cls.a1 = Author.objects.create(name="Adrian Holovaty", age=34)
-        cls.a2 = Author.objects.create(name="Jacob Kaplan-Moss", age=35)
-        cls.a3 = Author.objects.create(name="Brad Dayley", age=45)
-
-        cls.p1 = Publisher.objects.create(
-            name="Apress", num_awards=3, duration=datetime.timedelta(days=1)
-        )
-
+        cls.a2 = Author.objects.create(name="Jacob Kaplan-Moss", age=45)
+        cls.p1 = Publisher.objects.create(num_awards=3)
+        cls.p2 = Publisher.objects.create(num_awards=1)
         cls.b1 = Book.objects.create(
             isbn="159059725",
-            name="The Definitive Guide to Django: Web Development Done Right",
+            name="b1",
             pages=447,
             rating=4.5,
             price=Decimal("30.00"),
@@ -2383,63 +2379,72 @@ class JSONArrayAggTests(TestCase):
             publisher=cls.p1,
             pubdate=datetime.date(2007, 12, 6),
         )
+        cls.b1.authors.add(cls.a1)
+        cls.b2 = Book.objects.create(
+            isbn="067232959",
+            name="b2",
+            pages=528,
+            rating=3.0,
+            price=Decimal("23.09"),
+            contact=cls.a2,
+            publisher=cls.p2,
+            pubdate=datetime.date(2008, 3, 3),
+        )
+        cls.b2.authors.add(cls.a2)
 
-    def test_JSONArrayAgg(self):
-        vals = Author.objects.aggregate(jsonarrayagg=JSONArrayAgg("name"))
+    def test(self):
+        vals = Book.objects.aggregate(jsonarrayagg=JSONArrayAgg("contact__name"))
         self.assertEqual(
             vals,
-            {"jsonarrayagg": ["Adrian Holovaty", "Jacob Kaplan-Moss", "Brad Dayley"]},
+            {"jsonarrayagg": ["Adrian Holovaty", "Jacob Kaplan-Moss"]},
         )
 
-    def test_JSONArrayAgg_datefield(self):
-        vals = Book.objects.aggregate(jsonarrayagg=JSONArrayAgg("pubdate"))
+    def test_datefield(self):
+        vals = Author.objects.aggregate(jsonarrayagg=JSONArrayAgg("book__pubdate"))
         self.assertEqual(
             vals,
             {
                 "jsonarrayagg": [
                     "2007-12-06",
+                    "2008-03-03",
                 ]
             },
         )
 
-    def test_JSONArrayAgg_decimalfield(self):
-        vals = Book.objects.aggregate(jsonarrayagg=JSONArrayAgg("price"))
-        self.assertEqual(vals, {"jsonarrayagg": [30.0]})
+    def test_decimalfield(self):
+        vals = Author.objects.aggregate(jsonarrayagg=JSONArrayAgg("book__price"))
+        self.assertEqual(vals, {"jsonarrayagg": [30.0, 23.09]})
 
-    def test_JSONArrayAgg_integerfield(self):
-        vals = Book.objects.aggregate(jsonarrayagg=JSONArrayAgg("pages"))
-        self.assertEqual(vals, {"jsonarrayagg": [447]})
+    def test_integerfield(self):
+        vals = Author.objects.aggregate(jsonarrayagg=JSONArrayAgg("book__pages"))
+        self.assertEqual(vals, {"jsonarrayagg": [447, 528]})
 
     @skipUnlessDBFeature("supports_aggregate_filter_clause")
-    def test_JSONArrayAgg_filter(self):
-        vals = Author.objects.aggregate(
-            jsonarrayagg=JSONArrayAgg("age", filter=Q(age__gt=35))
+    def test_filter(self):
+        vals = Book.objects.aggregate(
+            jsonarrayagg=JSONArrayAgg("contact__age", filter=Q(contact__age__gt=35))
         )
-
         self.assertEqual(vals, {"jsonarrayagg": [45]})
 
-    def test_JSONArrayAgg_empty_result_set(self):
+    def test_empty_result_set(self):
         Author.objects.all().delete()
-
         val = Author.objects.aggregate(jsonarrayagg=JSONArrayAgg("age"))
-
         self.assertEqual(val, {"jsonarrayagg": None})
 
-    def test_JSONArrayAgg_default_set(self):
+    def test_default_set(self):
         Author.objects.all().delete()
-
         val = Author.objects.aggregate(
             jsonarrayagg=JSONArrayAgg("name", default=["<empty>"])
         )
         self.assertEqual(val, {"jsonarrayagg": ["<empty>"]})
 
-    def test_JSONArrayAgg_distinct_true(self):
+    def test_distinct_true(self):
         msg = "JSONArrayAgg does not allow distinct."
         with self.assertRaisesMessage(TypeError, msg):
             JSONArrayAgg("age", distinct=True)
 
     @skipIfDBFeature("supports_aggregate_filter_clause")
-    def test_JSONArrayAgg_not_supported(self):
+    def test_not_supported(self):
         msg = "JSONArrayAgg(filter) is not supported on this database backend."
         with self.assertRaisesMessage(NotSupportedError, msg):
             Author.objects.aggregate(arrayagg=JSONArrayAgg("age", filter=Q(age__gt=35)))