BookRepository test file

BookRepositoryTest.php

<?php

use App\Models\Book;
use App\Repositories\BookRepository;

beforeEach(function () {
    $this->mockParameters = ['author' => 'Max Minimal'];
    $this->mockBooksCollection = Book::factory(5)->create($this->mockParameters);
    $this->bookRepository = new BookRepository();
});

it('can find books', function () {
    $this->mockParameters['title'] = 'Sonic the Hedgehog';
    $this->mockBooksCollection = $this->mockBooksCollection->add(Book::factory()->create($this->mockParameters));

    expect($this->bookRepository->findBy($this->mockParameters))->count()->toBeOne();
})->group('books'); // Assign 'books' group to this test

it('can filter out books', function () {
    $this->mockBooksCollection = $this->mockBooksCollection
        ->add(Book::factory()->create([
            'author' => $mockAuthor = 'George R. R. Martin',
            'title' => 'A Game of Thrones'
        ]))->add(Book::factory()->create([
            'author' => 'J. K. Rowling',
            'title' => $mockTitle = 'Harry Potter and the Chamber of Secrets'
        ]));

    $this->mockParameters = [
        'author' => $mockAuthor,
        'title' => $mockTitle
    ];

    expect($this->bookRepository->filterBy($this->mockParameters))
        ->toHaveCount(2)
        ->first()->author->toBe($mockAuthor)
        ->last()->title->toBe($mockTitle);
})->group('books'); // Assign 'books' group to this test