1.4 - Unit Testing Presentation Logic

app/Concert.php

@@ -8,4 +8,9 @@ class Concert extends Model
 {
     protected $guarded = [];
     protected $dates = ['date'];
+
+    public function getFormattedDateAttribute()
+    {
+        return $this->date->format('F j, Y');
+    }
 }

database/factories/ModelFactory.php

@@ -1,5 +1,7 @@
 <?php
 
+use Carbon\Carbon;
+
 /*
 |--------------------------------------------------------------------------
 | Model Factories
@@ -22,3 +24,18 @@ $factory->define(App\User::class, function (Faker\Generator $faker) {
         'remember_token' => str_random(10),
     ];
 });
+
+$factory->define(App\Concert::class, function (Faker\Generator $faker) {
+    return [
+        'title' => 'Example Band',
+        'subtitle' => 'with The Fake Openers',
+        'date' => Carbon::parse('+2 weeks'),
+        'ticket_price' => 2000,
+        'venue' => 'The Example Theatre',
+        'venue_address' => '123 Example Lane',
+        'city' => 'Fakeville',
+        'state' => 'ON',
+        'zip' => '90210',
+        'additional_information' => 'Some sample additional information.',
+    ];
+});

resources/views/concerts/show.blade.php

@@ -1,6 +1,6 @@
 <h1>{{ $concert->title }}</h1>
 <h2>{{ $concert->subtitle }}</h2>
-<p>{{ $concert->date->format('F j, Y') }}</p>
+<p>{{ $concert->formatted_date }}</p>
 <p>Doors at {{ $concert->date->format('g:ia') }}</p>
 <p>{{ number_format($concert->ticket_price / 100, 2) }}</p>
 <p>{{ $concert->venue }}</p>

tests/unit/ConcertTest.php

@@ -0,0 +1,27 @@
+<?php
+
+use App\Concert;
+use Carbon\Carbon;
+use Illuminate\Foundation\Testing\WithoutMiddleware;
+use Illuminate\Foundation\Testing\DatabaseMigrations;
+use Illuminate\Foundation\Testing\DatabaseTransactions;
+
+class  ConcertTest extends TestCase
+{
+    use DatabaseMigrations;
+
+    /** @test */
+    function can_get_formatted_date()
+    {
+        // Create a concert with a known date
+        $concert = factory(Concert::class)->create([
+            'date' => Carbon::parse('2016-12-01 8:00pm'),
+        ]);
+
+        // Retrieve the formatted date
+        $date = $concert->formatted_date;
+
+        // Verify the date is formatted as expected
+        $this->assertEquals('December 1, 2016', $date);
+    }
+}