Functional testing with Laravel: test-driven development (with code)

<?php
namespace Tests\Feature\Admin\Carousels;
use Tests\TestCase;
class CarouselFeatureTest extends TestCase
{
    /** @test */
    public function it_can_show_the_create_carousel_page()
    {
       $employee = factory(User::class)->create();
        $this
            ->actingAs($employee, 'admin')
            ->get(route('admin.carousel.create'))
            ->assertStatus(200)
            ->assertSee('Title')
            ->assertSee('Subtitle')
            ->assertSee('Link')
            ->assertSee('Link Text')
            ->assertSee('Image');
    }
}

PHPUnit 6.5.7 by Sebastian Bergmann and contributors.
E                                                                   1 / 1 (100%)
Time: 920 ms, Memory: 26.00MB
There was 1 error:
1) Tests\Feature\Admin\Carousels\CarouselFeatureTest::it_can_show_the_create_carousel_page
InvalidArgumentException: Route [admin.carousel.create] not defined.

<?php
Route::namespace(&#39;Admin&#39;)->group(function () {
    Route::resource('carousel', 'Carousels\CarouselController');
});

php artisan make:controller --resource Admin/Carousels/CarouselController

PHPUnit 6.5.7 by Sebastian Bergmann and contributors.
F                                                                   1 / 1 (100%)
Time: 987 ms, Memory: 28.00MB
There was 1 failure:
1) Tests\Feature\Admin\Carousels\CarouselFeatureTest::it_can_show_the_create_carousel_page
Failed asserting that '' contains "Title".

<?php
namespace App\Http\Controllers\Admin\Carousels;
use App\Http\Controllers\Controller;
class CarouselController extends Controller
{
    /**
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
     */
    public function create()
    {
        return view(&#39;admin.carousels.create&#39;);
    }
}

@extends('layouts.admin.app')

@section('content')
    <!-- Main content -->
    <section class="content">
        @include('layouts.errors-and-messages')
        <p class="box">
            <p class="box-body">
                <form action="{{ route(&#39;admin.carousel.store&#39;) }}" method="post" enctype="multipart/form-data">
                    {{ csrf_field() }}
                    <p class="form-group">
                        <label for="title">Title</label>
                        <input type="text" name="title" id="title" class="form-control" placeholder="Title" value="{{ old(&#39;title&#39;) }}">
                    </p>
                    <p class="form-group">
                        <label for="image">Image</label>
                        <input type="file" name="image" id="image" class="form-control">
                    </p>
                    <p class="form-group">
                        <label for="link">Link</label>
                        <p class="input-group">
                            <span class="input-group-addon">http://</span>
                            <input type="text" name="link" id="link" class="form-control" placeholder="www.example.com" value="{{ old(&#39;link&#39;) }}">
                        </p>
                    </p>
                    <p class="btn-group">
                        <a href="{{ route(&#39;admin.carousel.index&#39;) }}" class="btn btn-default btn-sm">Back</a>
                        <button type="submit" class="btn btn-primary btn-sm">Create</button>
                    </p>
                </form>
            </p>
        </p>
    </section>
    <!-- /.content -->
@endsection

➜  git: phpunit --filter=CarouselFeatureTest::it_can_show_the_create_carousel_page
PHPUnit 6.5.7 by Sebastian Bergmann and contributors.
.                                                                   1 / 1 (100%)
Time: 810 ms, Memory: 28.00MB
OK (1 test, 6 assertions)

<?php
namespace Tests\Feature\Admin\Carousels;
use Tests\TestCase;
class CarouselFeatureTest extends TestCase
{
    /** @test */
    public function it_can_create_the_carousel()
    {
        $file = UploadedFile::fake()->create('image.jpg');
        $data = [
            'title' => $this->faker->word,
            'link' => $this->faker->url,
            'image' => $file,
        ];
      
        $employee = factory(User::class)->create();
      
        $this
            ->actingAs($employee, 'admin')
            ->post(route('admin.carousel.store'), $data)
            ->assertStatus(302)
            ->assertRedirect(route('admin.carousel.index'))
            ->assertSessionHas('message', 'Create carousel successful!');
    }
  
    /** @test */
    public function it_can_show_the_create_carousel_page()
    {
       $employee = factory(User::class)->create();
        $this
            ->actingAs($employee, 'admin')
            ->get(route('admin.carousel.create'))
            ->assertStatus(200)
            ->assertSee('Title')
            ->assertSee('Subtitle')
            ->assertSee('Link')
            ->assertSee('Link Text')
            ->assertSee('Image');
    }
}

<?php
namespace App\Http\Controllers\Admin\Carousels;
use App\Http\Controllers\Controller;
use App\Shop\Carousels\Exceptions\CarouselNotFoundException;
use App\Shop\Carousels\Exceptions\CreateCarouselErrorException;
use App\Shop\Carousels\Exceptions\UpdateCarouselErrorException;
use App\Shop\Carousels\Repositories\CarouselRepository;
use App\Shop\Carousels\Repositories\CarouselRepositoryInterface;
use App\Shop\Carousels\Requests\CreateCarouselRequest;
use App\Shop\Carousels\Requests\UpdateCarouselRequest;
use Illuminate\Http\UploadedFile;
class CarouselController extends Controller
{
    /**
     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
     */
    public function create()
    {
        return view(&#39;admin.carousels.create&#39;);
    }
    /**
     * @param CreateCarouselRequest $request
     * @return \Illuminate\Http\RedirectResponse
     */
    public function store(CreateCarouselRequest $request)
    {
        try {
          
            $data = $request->except('_token');
            if ($request->hasFile('image') && $request->file('image') instanceof UploadedFile) {
                $data['src'] = $request->file('image')->store('carousels', ['disk' => 'public']);
            }
            
            $carouselRepo = new CarouselRepository(new Carousel);
            $carouselRepo->createCarousel($data);
          
            $request->session()->flash('message', 'Create carousel successful!');
            return redirect()->route('admin.carousel.index');
        } catch (CreateCarouselErrorException $e) {
            $request->session()->flash('error', $e->getMessage());
            return redirect()->back()->withInput();
        }
    }
}

➜  git: phpunit --filter=CarouselFeatureTest::it_can_create_the_carousel          
PHPUnit 6.5.7 by Sebastian Bergmann and contributors.
.                                                                   1 / 1 (100%)
Time: 993 ms, Memory: 28.00MB
OK (1 test, 5 assertions)