Add first test

src/lib/components/switch/switch.test.ts

@@ -0,0 +1,15 @@
+import { render } from "@testing-library/svelte";
+import TestRenderer from "../../test-utils/TestRenderer.svelte";
+import { Switch } from ".";
+jest.mock('../../hooks/use-id')
+
+describe('Safe guards', () => {
+  it('should be possible to render a Switch without crashing', () => {
+    render(TestRenderer, {
+      allProps: [
+        Switch,
+        { checked: false, onChange: console.log }
+      ]
+    });
+  })
+})