...@@ -93,3 +93,9 @@ Object.assign(global, { ...@@ -93,3 +93,9 @@ Object.assign(global, {
clearTimeout(id); clearTimeout(id);
}, },
}); });
// make sure that each test actually tests something
// see https://jestjs.io/docs/en/expect#expecthasassertions
beforeEach(() => {
expect.hasAssertions();
});