[FIX] re-introduce some missing tests

The point is to have visibility on the development of the owl2 features.
This commit reintroduces some tests keeping them skipped in order to fulfill that purpose.

There still are some missing tests though.

tests/helpers.ts

@@ -211,3 +211,10 @@ export function children(w: Component): Component[] {
 export function isDirectChildOf(child: Component, parent: Component): boolean {
   return children(parent).includes(child);
 }
+
+export async function editInput(input: HTMLInputElement | HTMLTextAreaElement, value: string) {
+  input.value = value;
+  input.dispatchEvent(new Event("input"));
+  input.dispatchEvent(new Event("change"));
+  return nextTick();
+}