????? ???! ??? ?? ?? ????? ???? ??? ??? ????. TDD, BDD, ???? ??? ??, ??? ?? ?? ? ?? ?? ?? ??? ???? ?? ?? ??? ???? ??? ?? ?? ????. ??? ??? ?? ??? ? ???? ??, ? ??? ?? ????? ? ??? ?? ??? ?? ??? ???? ??? ??? ???? ??? ?? ????. ???? ?? ?? ? ??? ???? ????? ??? ??? ??? ??? ?? ? ??? ??? ???. ???? ?????!

??? ??????

??? ??? ?????? ?? ?? ??? ?? ?? ?? ??????. ??? ?? ???? ??? ? ??? ???? ??? ?? ??? ??? ????. ?? ????? ???????.

??? ?? ?? ???? ?????. ????? ?? ????? ?? ???, ?? ?? ??? ???????? ???? ?? ??? ??? ? ???? ?????.

?? ?? ???? ????? ??? ??? ???. ? ???? API?? ?? ??? ???? ????? ?????.

??? ???? ??? ??? ?? API? ???? ??? ??? ???? ??(??? ?? ? ??? API? ??? ? ??) ???? ??? ? ?? ?? ? ??? ????.

??, Leo, ??? ???. ??? ?? ??? ? ??? ??? ????? ?, ?????. API? ???? ?? API? ??? ?? ?? ???? ?????. ?? ????? ?? ?? ???? API ??? "??"? ??? ????.

?? ??? ??? API? ???? ??? ???? fetchMoviesFromAPI()?? ??? ?????? ?? ??? ?? API ??? ??????? ?? ??? ??? ? ????.

// This is the mock
const MOVIES_FROM_API = [
    {
        id: 1,
        name: "Interstellar"
    },
    {
        id: 2,
        name: "Nosferatu"
    }
]

// Here, we’re telling fetchMoviesFromAPI to return our mock instead of calling the real API. This is a stub, which you’ll learn about in the next section.
const fetchMoviesFromAPI = jest.fn().mockResolvedValue(MOVIES_FROM_API)

;(async () => {
    {
        const expectedMovies = MOVIES_FROM_API
        const movies = await fetchMoviesFromAPI()

        expect(movies).toEqual(MOVIES_FROM_API)
    }
})()

Mock? ???? ?? ???? ???? ???? ???? ?? ???? ???. ?? ??? ???? ??? ? ???? ???? API ????? ?? ?? ??? ?? ?? ?? ?? ??? ?? ??? ? ???? ???? ?????.

Mock? ??? ???? ???? ??? ?? ??? ??????? ?? ?????.

?? ???? ???? ?? ???? ????? ?? ????. ??? ??? ?? ??? ????? ???? ?? ??? ??? ?????.

??(mock)? ????, ?? ??(stub)? ??????

??? ??? ????? ?? ?? ??? ?????. ??? ??? ?? ??? ??? ????, ?? ?? ?? ???? ?? ?? ??? ?????.

??? ??? ??? ?????. ?? ?? ?? ?? API? ????? ??? ?? ??? ???? ?? ??(??? ?? ??)? ?????.

?? ?? ???? ?? ???? ???? ????? ? ??? ?? ????? ??? ???.

? ?? ??? ???????. ??? ??? ? ??? ???? ??????? ?????? ??? ?????. ???? ?? ????? ??? ???? ?????. ???? ??? ??? ? ??? ???? ???. ?, ?? ???? ???? ???. ?? ?? ??? ??? ????? ??? ?? ??(?? ???? ??? ??? ??? ? ?? ???) ??? ?? ???(?? ??? ? ??)? ??? ? ????.

??? ???? ?? ??? ??? ?? ??? ?? ?(?, ?? ?)?? ?????. ??? ???? ???? ?? “?? ??? ??? 10? ?????.”

?? ????.

???? ??? ?? ???? ???? ???? ?? ??Purchase() ??? ?????? ??? ?????. ??? ???? ??? ???? ???? ?? "10"? ???? ??? ????. ???:

// This is the mock
const MOVIES_FROM_API = [
    {
        id: 1,
        name: "Interstellar"
    },
    {
        id: 2,
        name: "Nosferatu"
    }
]

// Here, we’re telling fetchMoviesFromAPI to return our mock instead of calling the real API. This is a stub, which you’ll learn about in the next section.
const fetchMoviesFromAPI = jest.fn().mockResolvedValue(MOVIES_FROM_API)

;(async () => {
    {
        const expectedMovies = MOVIES_FROM_API
        const movies = await fetchMoviesFromAPI()

        expect(movies).toEqual(MOVIES_FROM_API)
    }
})()

??? ?? ???? ????? ???? ????? ?? ??? ???? ?????. ?? ??? ???? ???? ? ??? ??? ??? API? ??? ???? ?? ??? ??? ????.

????? ?? ??? ?? ?? ?? ?? ?? 200ml?? ?? ???? ???? ??? ???? ????? ?? ????. ??? ?? ??? ??? ??? ???? ???? ?? ??? ?? ? ???? ????? ???.

??, ??... ??? ????? ???? ??????

??? ??????? ?? ??? ?? ??? ???? ??? ??????. ?? ???? ?? ???? ?????. ??? ??? ?? ?? ????

???? ??? ?????? ?? ??, ??? ????, ? ?? ??? ?????. ?? ?? ??? ??? ???? ??? ??? ? ?? ?? ?? ???? ????? ??? ? ????.

????? ?? ??? ????? ??? ??? ???. ??? ??? ??? ???? ???? ???? ??? ??? ???? ???. ? ?? ??? ??? ?????? ????? ?? ?? ??? ???? ??? ????. ???? ???? ??? ???? ?? ??? ??? ????? ? ????. ?? ?? ??? ??? ? ????.

• ??? ??? ??
• ? ??? ????
• ?? ??? ????

?? ?? ???? ??? ??? ??? ???? CompleteOrder() ??? ???? ?????? ?? ??? ??? ? ????.

• ?? ??? ??? ??
• ?? ??? ??? ??
• ? ??? ?? ??? ??????

// This is the mock
const MOVIES_FROM_API = [
    {
        id: 1,
        name: "Interstellar"
    },
    {
        id: 2,
        name: "Nosferatu"
    }
]

// Here, we’re telling fetchMoviesFromAPI to return our mock instead of calling the real API. This is a stub, which you’ll learn about in the next section.
const fetchMoviesFromAPI = jest.fn().mockResolvedValue(MOVIES_FROM_API)

;(async () => {
    {
        const expectedMovies = MOVIES_FROM_API
        const movies = await fetchMoviesFromAPI()

        expect(movies).toEqual(MOVIES_FROM_API)
    }
})()

?????, ???? ???? ?? ?? ???? ?? ???? ???? ?? ????. ??? ??? ?? ?? ???? ????. ?? ??? ???? ???? ??? ??? ????? ?? ???.

?? ?? ????! ????? ???? ???? ??? ?? ?? ??? ??, ??, ????? ??? ??? ??????. ?? ???? ??? ??? ? ????. ??? ???, ??!

? ??? TDD ??: Mock, Stubs, Spie? ???? ??? ?? ??? ??????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!