Revert: Restore accidentally removed tests from f109cf5.

Author: WaVEV

tests/model_fields_/models.py

@@ -126,12 +126,14 @@ class Address(EmbeddedModel):
     city = models.CharField(max_length=20)
     state = models.CharField(max_length=2)
     zip_code = models.IntegerField(db_index=True)
+    tags = ArrayField(models.CharField(max_length=100), null=True, blank=True)
 
 
 class Author(EmbeddedModel):
     name = models.CharField(max_length=10)
     age = models.IntegerField()
     address = EmbeddedModelField(Address)
+    skills = ArrayField(models.CharField(max_length=100), null=True, blank=True)
 
 
 class Book(models.Model):

tests/model_fields_/test_embedded_model.py

@@ -102,6 +102,56 @@ def test_pre_save(self):
         self.assertGreater(obj.data.auto_now, auto_now_two)
 
 
+class ArrayFieldTests(TestCase):
+    @classmethod
+    def setUpTestData(cls):
+        cls.book = Book.objects.create(
+            author=Author(
+                name="Shakespeare",
+                age=55,
+                skills=["writing", "editing"],
+                address=Address(city="NYC", state="NY", tags=["home", "shipping"]),
+            ),
+        )
+
+    def test_contains(self):
+        self.assertCountEqual(Book.objects.filter(author__skills__contains=["nonexistent"]), [])
+        self.assertCountEqual(
+            Book.objects.filter(author__skills__contains=["writing"]), [self.book]
+        )
+        # Nested
+        self.assertCountEqual(
+            Book.objects.filter(author__address__tags__contains=["nonexistent"]), []
+        )
+        self.assertCountEqual(
+            Book.objects.filter(author__address__tags__contains=["home"]), [self.book]
+        )
+
+    def test_contained_by(self):
+        self.assertCountEqual(
+            Book.objects.filter(author__skills__contained_by=["writing", "publishing"]), []
+        )
+        self.assertCountEqual(
+            Book.objects.filter(author__skills__contained_by=["writing", "editing", "publishing"]),
+            [self.book],
+        )
+        # Nested
+        self.assertCountEqual(
+            Book.objects.filter(author__address__tags__contained_by=["home", "work"]), []
+        )
+        self.assertCountEqual(
+            Book.objects.filter(author__address__tags__contained_by=["home", "work", "shipping"]),
+            [self.book],
+        )
+
+    def test_len(self):
+        self.assertCountEqual(Book.objects.filter(author__skills__len=1), [])
+        self.assertCountEqual(Book.objects.filter(author__skills__len=2), [self.book])
+        # Nested
+        self.assertCountEqual(Book.objects.filter(author__address__tags__len=1), [])
+        self.assertCountEqual(Book.objects.filter(author__address__tags__len=2), [self.book])
+
+
 class EmbeddedArrayTests(TestCase):
     def test_save_load(self):
         reviews = [