Allow single server instance in test suite (#7262)

* initial pass

* reconfigureServer when needed

* finish postgres tests

* mongo tests

* more tests

* clean up

* re-add skipped test

* Fix transaction tests

* handle batch

* AuthenticationAdapter fix

* More reconfiguration

* clean up

* properly terminate cli servers

* handle Parse.Push

* Flaky PushController

* ensure reconfigureServer when changed

* fix postgres tests

* remove console.log

* LiveQuery spec remove duplicates and listeners

spec/ParseServer.spec.js

@@ -10,26 +10,32 @@ const { spawn } = require('child_process');
 
 describe('Server Url Checks', () => {
   let server;
-  beforeAll(done => {
-    const app = express();
-    app.get('/health', function (req, res) {
-      res.json({
-        status: 'ok',
+  beforeEach(done => {
+    if (!server) {
+      const app = express();
+      app.get('/health', function (req, res) {
+        res.json({
+          status: 'ok',
+        });
       });
-    });
-    server = app.listen(13376, undefined, done);
+      server = app.listen(13376, undefined, done);
+    } else {
+      done();
+    }
   });
 
   afterAll(done => {
+    Parse.serverURL = 'http://localhost:8378/1';
     server.close(done);
   });
 
   it('validate good server url', done => {
     Parse.serverURL = 'http://localhost:13376';
-    ParseServer.verifyServerUrl(function (result) {
+    ParseServer.verifyServerUrl(async result => {
       if (!result) {
         done.fail('Did not pass valid url');
       }
+      await reconfigureServer();
       done();
     });
   });
@@ -37,10 +43,11 @@ describe('Server Url Checks', () => {
   it('mark bad server url', done => {
     spyOn(console, 'warn').and.callFake(() => {});
     Parse.serverURL = 'notavalidurl';
-    ParseServer.verifyServerUrl(function (result) {
+    ParseServer.verifyServerUrl(async result => {
       if (result) {
         done.fail('Did not mark invalid url');
       }
+      await reconfigureServer();
       done();
     });
   });
@@ -98,10 +105,11 @@ describe('Server Url Checks', () => {
     parseServerProcess.stderr.on('data', data => {
       stderr = data.toString();
     });
-    parseServerProcess.on('close', code => {
+    parseServerProcess.on('close', async code => {
       expect(code).toEqual(1);
       expect(stdout).toBeUndefined();
       expect(stderr).toContain('MongoServerSelectionError');
+      await reconfigureServer();
       done();
     });
   });