#1582 backed status check before e2e run

e2e/helpers/config.js

@@ -1,3 +1,3 @@
-export default {
+module.exports = {
     url: 'http://localhost:5000'
 };

gulpfile.js

@@ -4,6 +4,8 @@ const exec = require('child_process').exec;
 const PluginError = require('plugin-error');
 const argv = require('minimist')(process.argv.slice(2));
 const log = require('fancy-log');
+const request = require('request');
+const e2eConfig = require('./e2e/helpers/config.js');
 
 // Configuration
 
@@ -188,7 +190,31 @@ function e2eOnly() {
 }
 e2eOnly.description = `Runs the e2e tests only`;
 
-e2e = gulp.series(docker, e2eOnly);
+async function backendStatus() {
+    const milliseconds = 250;
+    return new Promise(resolve => {
+        let timer;
+        let attempts = 1;
+        timer = setInterval(() => {
+            const url = `${e2eConfig.url}/api/Applications/status`;
+            request.get(url, (err, res) => {
+                if (res.body == 'true') {
+                    clearInterval(timer);
+                    resolve(attempts);
+                } else
+                    attempts++;
+            });
+        }, milliseconds);
+    });
+}
+backendStatus.description = `Performs a simple requests to check the backend status`;
+
+e2e = gulp.series(docker, async function isBackendReady() {
+    const attempts = await backendStatus();
+    log(`Backend ready after ${attempts} attempt(s)`);
+
+    return attempts;
+}, e2eOnly);
 e2e.description = `Restarts database and runs the e2e tests`;
 
 function smokesOnly() {
@@ -533,5 +559,6 @@ module.exports = {
     watch,
     docker,
     dockerStart,
-    dockerWait
+    dockerWait,
+    backendStatus
 };