feat: Add $setOnInsert operator to Parse.Server.database.update (#8791)

spec/MongoStorageAdapter.spec.js

@@ -254,6 +254,45 @@ describe_only_db('mongo')('MongoStorageAdapter', () => {
     expect(obj.get('foo').test.date[0] instanceof Date).toBeTrue();
   });
 
+  it('upserts with $setOnInsert', async () => {
+    const uuid = require('uuid');
+    const uuid1 = uuid.v4();
+    const uuid2 = uuid.v4();
+    const query = {
+      x: 1,
+    };
+    const update = {
+      objectId: {
+        __op: 'SetOnInsert',
+        amount: uuid1,
+      },
+      x: 1,
+      count: {
+        __op: 'Increment',
+        amount: 1,
+      },
+    };
+    await Parse.Server.database.update(
+      'MyClass',
+      query,
+      update,
+      { upsert: true },
+    );
+    update.objectId.amount = uuid2;
+    await Parse.Server.database.update(
+      'MyClass',
+      query,
+      update,
+      { upsert: true },
+    );
+    const q = new Parse.Query('MyClass');
+    const docs = await q.find();
+    expect(docs.length).toBe(1);
+    expect(docs[0].id).toBe(uuid1);
+    expect(docs[0].get('x')).toBe(1);
+    expect(docs[0].get('count')).toBe(2);
+  });
+
   it('handles updating a single object with array, object date', done => {
     const adapter = new MongoStorageAdapter({ uri: databaseURI });