diff --git a/jest.config.js b/jest.config.js
index 95e94116..7dbaf123 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -3,6 +3,6 @@ module.exports = {
   transform: {
     "^.+\\.ts?$": "ts-jest"
   },
-  testRegex: "(/tests/.*|(\\.|/)(test|spec))\\.(ts|js)x?$",
+  testRegex: "(/tests/.*(test|spec))\\.ts?$",
   moduleFileExtensions: ["ts", "tsx", "js", "jsx", "json", "node"]
 };
diff --git a/web/static/src/ts/services/router.ts b/web/static/src/ts/services/router.ts
index 631d64d7..eb9674a4 100644
--- a/web/static/src/ts/services/router.ts
+++ b/web/static/src/ts/services/router.ts
@@ -9,7 +9,7 @@ function clearSlashes(s: string): string {
   return s.replace(/\/$/, "").replace(/^\//, "");
 }
 
-type RouterEvent = "query_changed";
+export type RouterEvent = "query_changed";
 
 export interface IRouter {
   navigate(query: Query): void;
diff --git a/web/static/tests/core/widget.test.ts b/web/static/tests/core/widget.test.ts
index 6d71908c..7c016f19 100644
--- a/web/static/tests/core/widget.test.ts
+++ b/web/static/tests/core/widget.test.ts
@@ -1,6 +1,5 @@
-import { QWeb } from "../../src/ts/core/qweb_vdom";
-import { idGenerator } from "../../src/ts/core/utils";
 import { WEnv, Widget } from "../../src/ts/core/widget";
+import { makeTestWEnv, makeTestFixture } from "../helpers";
 
 //------------------------------------------------------------------------------
 // Setup and helpers
@@ -15,12 +14,8 @@ let fixture: HTMLElement;
 let env: WEnv;
 
 beforeEach(() => {
-  fixture = document.createElement("div");
-  document.body.appendChild(fixture);
-  env = {
-    qweb: new QWeb(),
-    getID: idGenerator()
-  };
+  fixture = makeTestFixture();
+  env = makeTestWEnv();
 });
 
 afterEach(() => {
diff --git a/web/static/tests/helpers.ts b/web/static/tests/helpers.ts
new file mode 100644
index 00000000..8582597d
--- /dev/null
+++ b/web/static/tests/helpers.ts
@@ -0,0 +1,71 @@
+import { QWeb } from "../src/ts/core/qweb_vdom";
+import { idGenerator } from "../src/ts/core/utils";
+import { WEnv } from "../src/ts/core/widget";
+import { Env } from "../src/ts/env";
+import { IAjax, RPC } from "../src/ts/services/ajax";
+import {
+  IActionManager,
+  ActionEvent,
+  ActionWidget
+} from "../src/ts/services/action_manager";
+import { Callback } from "../src/ts/core/event_bus";
+import { IRouter, Query, RouterEvent } from "../src/ts/services/router";
+
+export function makeTestFixture() {
+  let fixture = document.createElement("div");
+  document.body.appendChild(fixture);
+  return fixture;
+}
+
+export function makeTestWEnv(): WEnv {
+  return {
+    qweb: new QWeb(),
+    getID: idGenerator()
+  };
+}
+
+export function makeTestEnv(): Env {
+  const ajax = new MockAjax();
+  const actionManager = new MockActionManager();
+  const router = new MockRouter();
+  let { qweb, getID } = makeTestWEnv();
+  return {
+    qweb,
+    getID,
+    ajax,
+    actionManager,
+    router,
+    rpc: ajax.rpc,
+    debug: false,
+    menus: []
+  };
+}
+
+class MockAjax implements IAjax {
+  async rpc(rpc: RPC) {
+    return true;
+  }
+}
+
+class MockActionManager implements IActionManager {
+  doAction(actionID: number) {}
+  on(event: ActionEvent, owner: any, callback: Callback) {}
+  getCurrentAction(): ActionWidget | null {
+    return null;
+  }
+}
+
+class MockRouter implements IRouter {
+  navigate(query: Query) {}
+  on(event: RouterEvent, owner: any, callback: Callback) {}
+  getQuery(): Query {
+    return {};
+  }
+  formatURL(path: string, query: Query): string {
+    return "";
+  }
+}
+
+export function normalize(str: string): string {
+  return str.replace(/\s+/g, "");
+}
diff --git a/web/static/tests/widgets/navbar.test.ts b/web/static/tests/widgets/navbar.test.ts
new file mode 100644
index 00000000..5e997cf8
--- /dev/null
+++ b/web/static/tests/widgets/navbar.test.ts
@@ -0,0 +1,50 @@
+import { Env } from "../../src/ts/env";
+import { makeTestEnv, makeTestFixture, normalize } from "../helpers";
+import { Navbar } from "../../src/ts/widgets/navbar";
+
+//------------------------------------------------------------------------------
+// Setup and helpers
+//------------------------------------------------------------------------------
+
+let fixture: HTMLElement;
+let env: Env;
+
+beforeEach(() => {
+  fixture = makeTestFixture();
+  env = makeTestEnv();
+});
+
+afterEach(() => {
+  fixture.remove();
+});
+
+//------------------------------------------------------------------------------
+// Tests
+//------------------------------------------------------------------------------
+
+test("can be rendered", async () => {
+  const navbar = new Navbar(env);
+  await navbar.mount(fixture);
+  expect(normalize(fixture.innerHTML)).toBe(
+    normalize(`
+    <div class=\"o_navbar\">
+        <span class=\"title\">Odoo</span>
+        <ul></ul>
+    </div>`)
+  );
+});
+
+test("can render one menu item", async () => {
+  env.menus.push({ title: "menu", actionID: 4 });
+  const navbar = new Navbar(env);
+  await navbar.mount(fixture);
+  expect(normalize(fixture.innerHTML)).toBe(
+    normalize(`
+    <div class=\"o_navbar\">
+        <span class=\"title\">Odoo</span>
+        <ul>
+            <li><ahref=\"\">menu</a></li>
+        </ul>
+    </div>`)
+  );
+});