Backup extraction is working

tests/backup.test.ts

@@ -1,8 +1,35 @@
 import BackupManager from '../src/user/system/BackupManager'
+import { fstat, copy, ensureFile, removeSync } from 'fs-extra'
+import Utils from '../src/utils/Utils'
+const BACKUP_FILE_PATH_ABSOLUTE = '/captain/backup.tar'
 
-test('BackupManager', () => {
-    const bk = new BackupManager()
-    return bk.checkAndPrepareRestoration().then(function(data) {
-        expect(data).toBeFalsy()
+beforeEach(() => {
+    return ensureFile(BACKUP_FILE_PATH_ABSOLUTE).then(function() {
+        return removeSync(BACKUP_FILE_PATH_ABSOLUTE)
     })
 })
+
+test('No backup file', () => {
+    const bk = new BackupManager()
+    return Promise.resolve()
+        .then(function() {
+            return bk.checkAndPrepareRestoration()
+        })
+        .then(function(data) {
+            expect(data).toBeFalsy()
+        })
+})
+
+test('Test backup file', () => {
+    const bk = new BackupManager()
+    return Promise.resolve()
+        .then(function() {
+            return copy(`${__dirname}/backup.tar`, BACKUP_FILE_PATH_ABSOLUTE)
+        })
+        .then(function() {
+            return bk.checkAndPrepareRestoration()
+        })
+        .then(function(data) {
+            expect(data).toBe(true)
+        })
+})