CategoryTest.php

<?php

namespace Tests\Feature;

use App\Category;
use App\Transaction;
use App\User;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Laravel\Passport\Passport;
use Tests\TestCase;

class CategoryTest extends TestCase
{
    use RefreshDatabase;

    public function test_users_have_their_own_categories_copies()
    {
        factory(Category::class, 5)->create();

        // TODO replace with user creation endpoint
        Passport::actingAs($user = factory(User::class)->create());

        $this->assertEquals(5, Category::whereNull('user_id')->count());
        $this->assertEquals(5, Category::where('user_id', $user->id)->count());
    }

    public function test_can_get_categories_list()
    {
        factory(Category::class, 5)->create();

        $this->passportAs($user = factory(User::class)->create())
            ->get('api/categories')
            ->assertSuccessful()
            ->assertJsonPaths('*.user_id', $user->id)
            ->assertJsonCount(5)
            ->assertJsonStructure([
                [
                    'id',
                    'name',
                    'type',
                ],
            ]);
    }

    /**
     * @dataProvider typesCountProvider
     *
     * @param  int  $type
     * @param  int  $count
     */
    public function test_can_filter_categories_per_type($type, $count)
    {
        factory(Category::class, $count)->attachTo([
            'type' => $type,
        ], $user = factory(User::class)->create());

        $this->passportAs($user)
            ->get('api/categories?type='.$type)
            ->assertSuccessful()
            ->assertJsonCount($count);
    }

    public function test_can_sort_categories_based_on_usage()
    {
        $transactionsPerCategory = [
            1 => 5,
            2 => 3,
            3 => 7,
        ];

        $user = factory(User::class)->create();
        foreach ($transactionsPerCategory as $count) {
            factory(Transaction::class, $count)->attachTo([
                'category_id' => factory(Category::class)->attachTo([], $user)->id,
            ], $user);
        }

        $this->passportAs($user)
            ->get('api/categories?sort=usage')
            ->assertSuccessful()
            ->assertJsonPath('*.id', [3, 1, 2]);
    }

    public function typesCountProvider()
    {
        return [
            // type, count
            [Category::INCOME_TYPE, 3],
            [Category::EXPENSES_TYPE, 2],
            [Category::TRANSFER_TYPE, 4],
            [999, 0],
        ];
    }
}