diff --git a/tests/js/admin-user-helper.js b/tests/js/admin-user-helper.js
new file mode 100644
index 00000000..31cf4f65
--- /dev/null
+++ b/tests/js/admin-user-helper.js
@@ -0,0 +1,70 @@
+'use strict';
+
+let fs = require("fs");
+let path = require("path");
+var Realm = require('realm');
+
+function random(min, max) {
+    min = Math.ceil(min);
+    max = Math.floor(max);
+    return Math.floor(Math.random() * (max - min + 1)) + min;
+}
+
+exports.createAdminUser = function () {
+    return new Promise((resolve, reject) => {
+        const admin_token_user = Realm.Sync.User.adminUser(fs.readFileSync(path.join(__dirname, '../../object-server-for-testing/admin_token.base64'), 'utf-8'));
+
+
+
+        let newAdminName = 'admin' + random(1, 100000);
+        let password = '123';
+        Realm.Sync.User.register('http://localhost:9080', newAdminName, password, (error, user) => {
+            if (error) {
+                reject(error);
+            } else {
+                const config = {
+                    sync: {
+                        user: admin_token_user,
+                        url: `realm://localhost:9080/__admin`,
+                        error: err => console.log('Error opening __admin realm ' + err),
+                    }
+                };
+
+                Realm.open(config).then(realm => {
+                    let pendingAdminUser = realm.objects('User').filtered(`id == "${user.identity}"`)[0];
+                    realm.write(() => {
+                        pendingAdminUser.isAdmin = true;
+                    });
+
+                    user.logout();
+                }).then(_ => {
+                    let waitForServerToUpdateAdminUser = function () {
+                        Realm.Sync.User.login('http://localhost:9080', newAdminName, password, (error, user) => {
+                            if (error) {
+                                reject(error);
+                            } else {
+                                if (!user.isAdmin) {
+                                    setTimeout(_ => {
+                                        waitForServerToUpdateAdminUser();
+                                    }, 200);
+                                }
+
+                                resolve({ 
+                                    username: newAdminName, 
+                                    password: password
+                                });
+                            }
+                        });
+                    }
+
+                    setTimeout(_ => {
+                        reject("admin-user-helper: Create admin user timeout");
+                    }, 10000);
+
+                    waitForServerToUpdateAdminUser();
+                });
+            }
+        });
+    });
+}
+
diff --git a/tests/spec/unit_tests.js b/tests/spec/unit_tests.js
index 2826381b..95e8fb31 100644
--- a/tests/spec/unit_tests.js
+++ b/tests/spec/unit_tests.js
@@ -55,6 +55,8 @@ Realm.copyBundledRealmFiles = function() {
 const tests = RealmTests.getTestNames();
 for (const suiteName in tests) {
     describe(suiteName, () => {
+        beforeAll(done => RealmTests.prepare(done));
+
         beforeEach(() => RealmTests.runTest(suiteName, 'beforeEach'));
 
         for (const testName of tests[suiteName]) {