fix: LiveQuery can return incorrectly formatted date (#8456)

Author: dblythy

spec/ParseLiveQueryServer.spec.js

@@ -754,6 +754,49 @@ describe('ParseLiveQueryServer', function () {
     parseLiveQueryServer._onAfterSave(message);
   });
 
+  it('sends correct object for dates', async () => {
+    jasmine.restoreLibrary('../lib/LiveQuery/QueryTools', 'matchesQuery');
+
+    const parseLiveQueryServer = new ParseLiveQueryServer({});
+
+    const date = new Date();
+    const message = {
+      currentParseObject: {
+        date: { __type: 'Date', iso: date.toISOString() },
+        __type: 'Object',
+        key: 'value',
+        className: testClassName,
+      },
+    };
+    // Add mock client
+    const clientId = 1;
+    const client = addMockClient(parseLiveQueryServer, clientId);
+
+    const requestId2 = 2;
+
+    await addMockSubscription(parseLiveQueryServer, clientId, requestId2);
+
+    parseLiveQueryServer._matchesACL = function () {
+      return Promise.resolve(true);
+    };
+
+    parseLiveQueryServer._inflateParseObject(message);
+    parseLiveQueryServer._onAfterSave(message);
+
+    // Make sure we send leave and enter command to client
+    await timeout();
+
+    expect(client.pushCreate).toHaveBeenCalledWith(
+      requestId2,
+      {
+        className: 'TestObject',
+        key: 'value',
+        date: { __type: 'Date', iso: date.toISOString() },
+      },
+      null
+    );
+  });
+
   it('can handle object save command which does not match any subscription', async done => {
     const parseLiveQueryServer = new ParseLiveQueryServer({});
     // Make mock request message
@@ -1138,8 +1181,7 @@ describe('ParseLiveQueryServer', function () {
     expect(toSend.original).toBeUndefined();
     expect(spy).toHaveBeenCalledWith({
       usage: 'Subscribing using fields parameter',
-      solution:
-        `Subscribe using "keys" instead.`,
+      solution: `Subscribe using "keys" instead.`,
     });
   });
 
@@ -1945,6 +1987,7 @@ describe('ParseLiveQueryServer', function () {
     } else {
       subscription.clientRequestIds = new Map([[clientId, [requestId]]]);
     }
+    subscription.query = query.where;
     return subscription;
   }
 

src/LiveQuery/ParseLiveQueryServer.js

@@ -24,6 +24,7 @@ import UserRouter from '../Routers/UsersRouter';
 import DatabaseController from '../Controllers/DatabaseController';
 import { isDeepStrictEqual } from 'util';
 import Deprecator from '../Deprecator/Deprecator';
+import deepcopy from 'deepcopy';
 
 class ParseLiveQueryServer {
   clients: Map;
@@ -496,7 +497,7 @@ class ParseLiveQueryServer {
     if (!parseObject) {
       return false;
     }
-    return matchesQuery(parseObject, subscription.query);
+    return matchesQuery(deepcopy(parseObject), subscription.query);
   }
 
   async _clearCachedRoles(userId: string) {