let value; let called = 0; function callback(_value) { called ++; value = _value; } export default { props: { callback }, async test({ assert, component, target, window }) { assert.equal(called, 1); const input = target.querySelector('input'); const event = new window.Event('input'); input.value = 'h'; await input.dispatchEvent(event); assert.equal(called, 2); assert.equal(value.length, 3); assert.equal(value[0], 'h'); assert.equal(value[1], '2'); assert.equal(value[2], '3'); } };