backups: set label of backup and control it's retention

src/routes/test/common.js

@@ -11,6 +11,7 @@ const constants = require('../../constants.js'),
     settings = require('../../settings.js'),
     support = require('../../support.js'),
     superagent = require('superagent'),
+    tasks = require('../../tasks.js'),
     tokens = require('../../tokens.js');
 
 exports = module.exports = {
@@ -19,6 +20,7 @@ exports = module.exports = {
     cleanup,
     clearMailQueue,
     checkMails,
+    waitForTask,
 
     owner: {
         id: null,
@@ -99,3 +101,15 @@ async function checkMails(number) {
     expect(mailer._mailQueue.length).to.equal(number);
     clearMailQueue();
 }
+
+async function waitForTask(taskId) {
+    // eslint-disable-next-line no-constant-condition
+    for (let i = 0; i < 10; i++) {
+        const result = await tasks.get(taskId);
+        expect(result).to.not.be(null);
+        if (!result.active) return;
+        await delay(2000);
+        console.log(`Waiting for task to ${taskId} finish`);
+    }
+    throw new Error(`Task ${taskId} never finished`);
+}