Add test to fiter

Automattic · Nov 18, 2019 · ba38d1d · ba38d1d
1 parent ba2c353
commit ba38d1d
Showing 1 changed file with 19 additions and 0 deletions.
diff --git a/test/types.documentarray.test.js b/test/types.documentarray.test.js
@@ -590,6 +590,25 @@ describe('types.documentarray', function() {
       assert.equal(friendsNames.length, 2);
       assert.equal(friendsNames[1], 'Sam');
     });
+
+    it('filter() copies parent and path (gh-8317)', function() {
+      const personSchema = new Schema({ friends: [{ name: { type: String }, age: { type: Number } }] });
+      const Person = mongoose.model('gh8317-filter', personSchema);
+
+      const person = new Person({ friends: [
+        { name: 'Hafez', age: 25 },
+        { name: 'Sam', age: 27 }
+      ] });
+
+      const filteredFriends = person.friends.filter(friend => friend.age > 26);
+      assert.ok(filteredFriends.isMongooseArray);
+      assert.equal(filteredFriends.constructor.name, 'CoreDocumentArray');
+
+      filteredFriends.push({ name: 'John', age: 30 });
+
+      assert.equal(filteredFriends.length, 2);
+      assert.equal(filteredFriends[1].name, 'John');
+    });
   });
 
   it('cleans modified subpaths on splice() (gh-7249)', function() {