diff --git a/ember-cli-build.js b/ember-cli-build.js
index eba9ff4..2e0af58 100644
--- a/ember-cli-build.js
+++ b/ember-cli-build.js
@@ -4,7 +4,11 @@
 const EmberApp = require('ember-cli/lib/broccoli/ember-app');
 
 module.exports = function(defaults) {
-  let app = new EmberApp(defaults, {});
+  let app = new EmberApp(defaults, {
+    'ember-cli-babel': {
+      includePolyfill: (EmberApp.env() === 'test'),
+    },
+  });
 
   app.import('bower_components/bootstrap/dist/css/bootstrap.min.css');
   app.import('bower_components/bootstrap/dist/css/bootstrap-theme.min.css');
diff --git a/package.json b/package.json
index 1905667..8a41093 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,7 @@
     "ember-cli": "~2.14.0",
     "ember-cli-app-version": "^3.0.0",
     "ember-cli-babel": "^6.3.0",
+    "ember-cli-code-coverage": "^0.4.1",
     "ember-cli-dependency-checker": "^1.3.0",
     "ember-cli-eslint": "^3.0.0",
     "ember-cli-flash": "1.4.3",
@@ -41,6 +42,7 @@
     "ember-resolver": "^4.0.0",
     "ember-responsive": "^2.0.4",
     "ember-simple-auth": "1.4.0",
+    "ember-sinon": "^1.0.0",
     "ember-source": "~2.14.0",
     "loader.js": "^4.2.3"
   },
diff --git a/tests/unit/authenticators/application-test.js b/tests/unit/authenticators/application-test.js
new file mode 100644
index 0000000..48847fb
--- /dev/null
+++ b/tests/unit/authenticators/application-test.js
@@ -0,0 +1,62 @@
+import { moduleFor, test } from 'ember-qunit';
+import sinon from 'sinon';
+import Ember from 'ember';
+
+moduleFor('authenticator:application', 'Unit | application', {
+  unit: true,
+});
+
+
+test('should restore session when token is present', function(assert) {
+  assert.expect(1);
+  const authenticator = this.subject();
+  const data = {data: {token: 'foo'}};
+  return authenticator.restore(data).then((obs) => {
+    assert.equal(obs, data);
+  });
+});
+
+test('should not restore session when token is absent', function(assert) {
+  assert.expect(1);
+  const authenticator = this.subject();
+  const data = {data: {token: ''}};
+  return authenticator.restore(data).catch(() => {
+    assert.ok(true);
+  });
+});
+
+test('`invalidate` should invalidate the session', function(assert) {
+  assert.expect(1);
+  const authenticator = this.subject();
+  return authenticator.invalidate().then(() => {
+    assert.ok(true);
+  });
+});
+
+test('`makeRequest` should make a request', function(assert) {
+  assert.expect(2);
+  const stub = sinon.stub(Ember.$, 'ajax');
+  stub.resolves(42);
+  const authenticator = this.subject();
+  authenticator.set('serverTokenEndpoint', 'foo')
+  const promise = authenticator.makeRequest({bar: 'baz'}).then((d) => {
+    assert.equal(d, 42);
+  });
+  assert.ok(Ember.$.ajax.calledWithMatch({url: 'foo', data: {bar: 'baz'}}));
+  Ember.$.ajax.restore();
+  return promise;
+});
+
+test('authenticate should craft a nice payload', function(assert) {
+  assert.expect(2);
+  const stub = sinon.stub(Ember.$, 'ajax');
+  stub.resolves(42);
+  const authenticator = this.subject();
+  authenticator.set('serverTokenEndpoint', 'foo')
+  const promise = authenticator.authenticate('myusername', 'mypassword').then((d) => {
+    assert.equal(d, 42);
+  });
+  assert.ok(Ember.$.ajax.calledWithMatch({url: 'foo', data: {username: 'myusername', password: 'mypassword'}}));
+  Ember.$.ajax.restore();
+  return promise;
+});