Add unit tests to this project

tests/Unit/ChartTest.php

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+<?php
+
+namespace Tests\Unit;
+
+use Tests\TestCase;
+use App\Models\Chart;
+use App\Models\User;
+
+class ChartTest extends TestCase
+{
+    public function testUser()
+    {
+        $chart = factory(Chart::class)->create();
+        $this->assertInstanceOf(User::class, $chart->user);
+    }
+}

tests/Unit/GenerateChartsTest.php

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+<?php
+
+namespace Tests\Unit;
+
+use Tests\TestCase;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use App\Console\Commands\GenerateCharts;
+use App\Services\Spotify;
+use App\Models\User;
+use Mockery;
+
+class GenerateChartsTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function testHandle()
+    {
+        $spotifyMock = Mockery::mock(Spotify::class);
+        $spotifyMock->shouldReceive('generateChart')->andReturn(true);
+
+        $this->app->instance(Spotify::class, $spotifyMock);
+
+        $user = factory(User::class)->create();
+
+        $command = new GenerateCharts($spotifyMock);
+        $this->artisan('chart:generate')
+            ->expectsOutput('Starting chart generation...')
+            ->expectsOutput('Chart for ' . $user->name . ' generated successfully!')
+            ->expectsOutput('All charts generated successfully!')
+            ->assertExitCode(0);
+    }
+}

tests/Unit/HomeControllerTest.php

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+<?php
+
+namespace Tests\Unit;
+
+use Tests\TestCase;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use App\Http\Controllers\HomeController;
+use App\Services\Spotify;
+use App\Models\User;
+use App\Models\Chart;
+use Illuminate\Support\Facades\Auth;
+use Illuminate\Http\Request;
+
+class HomeControllerTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function testGetIndex()
+    {
+        $spotifyMock = $this->createMock(Spotify::class);
+        $controller = new HomeController();
+        $response = $controller->getIndex($spotifyMock);
+
+        $this->assertEquals(200, $response->getStatusCode());
+        $this->assertViewHas('users');
+    }
+
+    public function testGetUserChart()
+    {
+        $user = factory(User::class)->create(['spotify_id' => 'testuser']);
+        $chart = factory(Chart::class)->create(['user_id' => $user->id, 'period' => 1]);
+
+        $controller = new HomeController();
+        $response = $controller->getUserChart('testuser');
+
+        $this->assertEquals(200, $response->getStatusCode());
+        $this->assertViewHas('user');
+        $this->assertViewHas('chart');
+    }
+
+    public function testGetDashboard()
+    {
+        $user = factory(User::class)->create();
+        Auth::login($user);
+
+        $controller = new HomeController();
+        $response = $controller->getDashboard();
+
+        $this->assertEquals(200, $response->getStatusCode());
+        $this->assertViewHas('user');
+        $this->assertViewHas('chart');
+    }
+
+    public function testGetRewind2018()
+    {
+        $user = factory(User::class)->create();
+        Auth::login($user);
+
+        $controller = new HomeController();
+        $response = $controller->getRewind2018();
+
+        $this->assertEquals(200, $response->getStatusCode());
+        $this->assertViewHas('user');
+        $this->assertViewHas('chart');
+    }
+
+    public function testPostRewind2018()
+    {
+        $user = factory(User::class)->create();
+        Auth::login($user);
+
+        $spotifyMock = $this->createMock(Spotify::class);
+        $spotifyMock->method('createPlaylist')->willReturn(['id' => 'new_playlist_id']);
+
+        $controller = new HomeController();
+        $response = $controller->postRewind2018($spotifyMock);
+
+        $this->assertEquals(200, $response->getStatusCode());
+        $this->assertJson($response->getContent());
+    }
+
+    public function testGetRewind()
+    {
+        $user = factory(User::class)->create();
+        Auth::login($user);
+
+        $controller = new HomeController();
+        $response = $controller->getRewind(2018);
+
+        $this->assertEquals(200, $response->getStatusCode());
+        $this->assertViewHas('user');
+        $this->assertViewHas('chart');
+    }
+
+    public function testPostRewind()
+    {
+        $user = factory(User::class)->create();
+        Auth::login($user);
+
+        $spotifyMock = $this->createMock(Spotify::class);
+        $spotifyMock->method('createPlaylist')->willReturn(['id' => 'new_playlist_id']);
+
+        $controller = new HomeController();
+        $response = $controller->postRewind($spotifyMock, 2018);
+
+        $this->assertEquals(200, $response->getStatusCode());
+        $this->assertJson($response->getContent());
+    }
+}

tests/Unit/SpotifyTest.php

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+<?php
+
+namespace Tests\Unit;
+
+use Tests\TestCase;
+use App\Services\Spotify;
+use App\Models\User;
+use App\Models\Chart;
+use Mockery;
+use Carbon\Carbon;
+use SpotifyWebAPI\SpotifyWebAPI;
+
+class SpotifyTest extends TestCase
+{
+    protected $spotify;
+    protected $user;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->spotify = Mockery::mock(SpotifyWebAPI::class);
+        $this->user = factory(User::class)->create();
+    }
+
+    public function testGenerateChart()
+    {
+        $spotifyService = new Spotify($this->spotify);
+
+        $this->spotify->shouldReceive('setAccessToken')
+            ->once()
+            ->with($this->user->spotify_access_token);
+
+        $this->spotify->shouldReceive('getMyTop')
+            ->once()
+            ->with('tracks', ['limit' => 20, 'time_range' => 'short_term'])
+            ->andReturn((object)[
+                'items' => [
+                    (object)[
+                        'id' => 'track1',
+                        'name' => 'Track 1',
+                        'artists' => [(object)['name' => 'Artist 1']]
+                    ],
+                    (object)[
+                        'id' => 'track2',
+                        'name' => 'Track 2',
+                        'artists' => [(object)['name' => 'Artist 2']]
+                    ]
+                ]
+            ]);
+
+        $spotifyService->generateChart($this->user);
+
+        $this->assertDatabaseHas('charts', [
+            'user_id' => $this->user->id,
+            'track_spotify_id' => 'track1',
+            'track_name' => 'Track 1',
+            'track_artist' => 'Artist 1',
+            'position' => 1
+        ]);
+
+        $this->assertDatabaseHas('charts', [
+            'user_id' => $this->user->id,
+            'track_spotify_id' => 'track2',
+            'track_name' => 'Track 2',
+            'track_artist' => 'Artist 2',
+            'position' => 2
+        ]);
+    }
+
+    public function testCreatePlaylist()
+    {
+        $spotifyService = new Spotify($this->spotify);
+
+        $this->spotify->shouldReceive('createUserPlaylist')
+            ->once()
+            ->with($this->user->spotify_id, ['name' => 'Your Top Songs 2018'])
+            ->andReturn((object)['id' => 'playlist1']);
+
+        $this->spotify->shouldReceive('addUserPlaylistTracks')
+            ->once()
+            ->with($this->user->spotify_id, 'playlist1', ['track1', 'track2']);
+
+        $newPlaylist = $spotifyService->createPlaylist($this->user, [
+            'title' => 'Your Top Songs 2018',
+            'tracks' => ['track1', 'track2']
+        ]);
+
+        $this->assertEquals('playlist1', $newPlaylist->id);
+    }
+}

tests/Unit/UserTest.php

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+<?php
+
+namespace Tests\Unit;
+
+use Tests\TestCase;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use App\Models\User;
+use App\Models\Chart;
+
+class UserTest extends TestCase
+{
+    use RefreshDatabase;
+
+    /**
+     * Test the charts method of the User model.
+     *
+     * @return void
+     */
+    public function testCharts()
+    {
+        $user = factory(User::class)->create();
+        $chart = factory(Chart::class)->create(['user_id' => $user->id]);
+
+        $this->assertInstanceOf('Illuminate\Database\Eloquent\Collection', $user->charts);
+        $this->assertTrue($user->charts->contains($chart));
+    }
+}