[REF] initial prototype of owl 2

tests/components/app.test.ts

@@ -0,0 +1,28 @@
+import { App, Component } from "../../src";
+import { status } from "../../src/component/status";
+import { xml } from "../../src/tags";
+import { makeTestFixture, snapshotEverything } from "../helpers";
+
+let fixture: HTMLElement;
+
+snapshotEverything();
+
+beforeEach(() => {
+  fixture = makeTestFixture();
+});
+
+describe("app", () => {
+  test("destroy remove the widget from the DOM", async () => {
+    class SomeComponent extends Component {
+      static template = xml`<div/>`;
+    }
+
+    const app = new App(SomeComponent);
+    const comp = await app.mount(fixture);
+    const el = comp.el!;
+    expect(document.contains(el)).toBe(true);
+    app.destroy();
+    expect(document.contains(el)).toBe(false);
+    expect(status(comp)).toBe("destroyed");
+  });
+});