1class User {
 2  constructor(bodyWeight: 0) {
 3    this.bodyWeight = bodyWeight;
 4  }
 5
 6  switchTo(program) { }
 7
 8  nextWorkoutFor(routine) {
 9    return new Workout(this.bodyWeight);
10  }
11}
12
13class StrongliftsProgram {
14  routine(name) {
15  }
16}
17
18class Workout {
19  constructor(bodyWeight = 0) {
20    this.bodyWeight = bodyWeight;
21  }
22}
23
24describe("User", () => {
25  it ("creates the next workout", function() {
26    const program = new StrongliftsProgram();
27    const user = new User(240);
28    const routineA = program.routine("A")
29
30    user.switchTo(program)
31    const workout = user.nextWorkoutFor(routineA);
32
33    expect(workout.bodyWeight).toEqual(240);
34  });
35});