feat: Upgrade Redis 3 to 4 for LiveQuery (#8333)

spec/ParseLiveQueryRedis.spec.js

@@ -0,0 +1,56 @@
+if (process.env.PARSE_SERVER_TEST_CACHE === 'redis') {
+  describe('ParseLiveQuery redis', () => {
+    afterEach(async () => {
+      const client = await Parse.CoreManager.getLiveQueryController().getDefaultLiveQueryClient();
+      client.close();
+    });
+    it('can connect', async () => {
+      await reconfigureServer({
+        startLiveQueryServer: true,
+        liveQuery: {
+          classNames: ['TestObject'],
+          redisURL: 'redis://localhost:6379',
+        },
+        liveQueryServerOptions: {
+          redisURL: 'redis://localhost:6379',
+        },
+      });
+      const subscription = await new Parse.Query('TestObject').subscribe();
+      const [object] = await Promise.all([
+        new Parse.Object('TestObject').save(),
+        new Promise(resolve =>
+          subscription.on('create', () => {
+            resolve();
+          })
+        ),
+      ]);
+      await Promise.all([
+        new Promise(resolve =>
+          subscription.on('delete', () => {
+            resolve();
+          })
+        ),
+        object.destroy(),
+      ]);
+    });
+
+    it('can call connect twice', async () => {
+      const server = await reconfigureServer({
+        startLiveQueryServer: true,
+        liveQuery: {
+          classNames: ['TestObject'],
+          redisURL: 'redis://localhost:6379',
+        },
+        liveQueryServerOptions: {
+          redisURL: 'redis://localhost:6379',
+        },
+      });
+      expect(server.config.liveQueryController.liveQueryPublisher.parsePublisher.isOpen).toBeTrue();
+      await server.config.liveQueryController.connect();
+      expect(server.config.liveQueryController.liveQueryPublisher.parsePublisher.isOpen).toBeTrue();
+      expect(server.liveQueryServer.subscriber.isOpen).toBe(true);
+      await server.liveQueryServer.connect();
+      expect(server.liveQueryServer.subscriber.isOpen).toBe(true);
+    });
+  });
+}