test.ts

import type { Address, PresentDeliveryList } from './solution';
import { Expect, Equal } from 'type-testing';

type MixedBehaviorList = {
  john: { behavior: 'good' };
  jimmy: { behavior: 'bad' };
  sara: { behavior: 'good' };
  suzy: { behavior: 'good' };
  chris: { behavior: 'good' };
  penny: { behavior: 'bad' };
};
type test_MixedBehaviorTest_actual = PresentDeliveryList<MixedBehaviorList>;
//   ^?
type test_MixedBehaviorTest_expected = {
  john: Address;
  jimmy: Address;
  sara: Address;
  suzy: Address;
  chris: Address;
  penny: Address;
};
type test_MixedBehaviorTest = Expect<
  Equal<test_MixedBehaviorTest_actual, test_MixedBehaviorTest_expected>
>;

type Unrelated = {
  hello: { hello: 'hello' };
  world: { world: 'world' };
};
type test_Unrelated_actual = PresentDeliveryList<Unrelated>;
//   ^?
type test_Unrelated_expected = {
  hello: Address;
  world: Address;
};
type test_Unrelated = Expect<Equal<test_Unrelated_actual, test_Unrelated_expected>>;