--- a/tests/SpamCheckerTest.php
+++ b/tests/SpamCheckerTest.php
@@ -2,12 +2,26 @@

 namespace App\Tests;

+use App\Entity\Comment;
+use App\SpamChecker;
 use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpClient\MockHttpClient;
+use Symfony\Component\HttpClient\Response\MockResponse;
+use Symfony\Contracts\HttpClient\ResponseInterface;

 class SpamCheckerTest extends TestCase
 {
-    public function testSomething()
+    public function testSpamScoreWithInvalidRequest()
     {
-        $this->assertTrue(true);
+        $comment = new Comment();
+        $comment->setCreatedAtValue();
+        $context = [];
+
+        $client = new MockHttpClient([new MockResponse('invalid', ['response_headers' => ['x-akismet-debug-help: Invalid key']])]);
+        $checker = new SpamChecker($client, 'abcde');
+
+        $this->expectException(\RuntimeException::class);
+        $this->expectExceptionMessage('Unable to check for spam: invalid (Invalid key).');
+        $checker->getSpamScore($comment, $context);
     }
 }

--- a/tests/SpamCheckerTest.php
+++ b/tests/SpamCheckerTest.php
@@ -24,4 +24,32 @@ class SpamCheckerTest extends TestCase
         $this->expectExceptionMessage('Unable to check for spam: invalid (Invalid key).');
         $checker->getSpamScore($comment, $context);
     }
+
+    /**
+     * @dataProvider getComments
+     */
+    public function testSpamScore(int $expectedScore, ResponseInterface $response, Comment $comment, array $context)
+    {
+        $client = new MockHttpClient([$response]);
+        $checker = new SpamChecker($client, 'abcde');
+
+        $score = $checker->getSpamScore($comment, $context);
+        $this->assertSame($expectedScore, $score);
+    }
+
+    public function getComments(): iterable
+    {
+        $comment = new Comment();
+        $comment->setCreatedAtValue();
+        $context = [];
+
+        $response = new MockResponse('', ['response_headers' => ['x-akismet-pro-tip: discard']]);
+        yield 'blatant_spam' => [2, $response, $comment, $context];
+
+        $response = new MockResponse('true');
+        yield 'spam' => [1, $response, $comment, $context];
+
+        $response = new MockResponse('false');
+        yield 'ham' => [0, $response, $comment, $context];
+    }
 }

--- a/src/DataFixtures/AppFixtures.php
+++ b/src/DataFixtures/AppFixtures.php
@@ -2,6 +2,8 @@

 namespace App\DataFixtures;

+use App\Entity\Comment;
+use App\Entity\Conference;
 use Doctrine\Bundle\FixturesBundle\Fixture;
 use Doctrine\Persistence\ObjectManager;

@@ -9,8 +11,24 @@ class AppFixtures extends Fixture
 {
     public function load(ObjectManager $manager)
     {
-        // $product = new Product();
-        // $manager->persist($product);
+        $amsterdam = new Conference();
+        $amsterdam->setCity('Amsterdam');
+        $amsterdam->setYear('2019');
+        $amsterdam->setIsInternational(true);
+        $manager->persist($amsterdam);
+
+        $paris = new Conference();
+        $paris->setCity('Paris');
+        $paris->setYear('2020');
+        $paris->setIsInternational(false);
+        $manager->persist($paris);
+
+        $comment1 = new Comment();
+        $comment1->setConference($amsterdam);
+        $comment1->setAuthor('Fabien');
+        $comment1->setEmail('[email protected]');
+        $comment1->setText('This was a great conference.');
+        $manager->persist($comment1);

         $manager->flush();
     }

--- a/tests/Controller/ConferenceControllerTest.php
+++ b/tests/Controller/ConferenceControllerTest.php
@@ -14,4 +14,19 @@ class ConferenceControllerTest extends WebTestCase
         $this->assertResponseIsSuccessful();
         $this->assertSelectorTextContains('h2', 'Give your feedback');
     }
+
+    public function testConferencePage()
+    {
+        $client = static::createClient();
+        $crawler = $client->request('GET', '/');
+
+        $this->assertCount(2, $crawler->filter('h4'));
+
+        $client->clickLink('View');
+
+        $this->assertPageTitleContains('Amsterdam');
+        $this->assertResponseIsSuccessful();
+        $this->assertSelectorTextContains('h2', 'Amsterdam 2019');
+        $this->assertSelectorExists('div:contains("There are 1 comments")');
+    }
 }

--- a/tests/Controller/ConferenceControllerTest.php
+++ b/tests/Controller/ConferenceControllerTest.php
@@ -29,4 +29,19 @@ class ConferenceControllerTest extends WebTestCase
         $this->assertSelectorTextContains('h2', 'Amsterdam 2019');
         $this->assertSelectorExists('div:contains("There are 1 comments")');
     }
+
+    public function testCommentSubmission()
+    {
+        $client = static::createClient();
+        $client->request('GET', '/conference/amsterdam-2019');
+        $client->submitForm('Submit', [
+            'comment_form[author]' => 'Fabien',
+            'comment_form[text]' => 'Some feedback from an automated functional test',
+            'comment_form[email]' => '[email protected]',
+            'comment_form[photo]' => dirname(__DIR__, 2).'/public/images/under-construction.gif',
+        ]);
+        $this->assertResponseRedirects();
+        $client->followRedirect();
+        $this->assertSelectorExists('div:contains("There are 2 comments")');
+    }
 }

--- a/tests/Controller/ConferenceControllerTest.php
+++ b/tests/Controller/ConferenceControllerTest.php
@@ -15,21 +15,6 @@ class ConferenceControllerTest extends WebTestCase
         $this->assertSelectorTextContains('h2', 'Give your feedback');
     }

-    public function testConferencePage()
-    {
-        $client = static::createClient();
-        $crawler = $client->request('GET', '/');
-
-        $this->assertCount(2, $crawler->filter('h4'));
-
-        $client->clickLink('View');
-
-        $this->assertPageTitleContains('Amsterdam');
-        $this->assertResponseIsSuccessful();
-        $this->assertSelectorTextContains('h2', 'Amsterdam 2019');
-        $this->assertSelectorExists('div:contains("There are 1 comments")');
-    }
-
     public function testCommentSubmission()
     {
         $client = static::createClient();
@@ -44,4 +29,19 @@ class ConferenceControllerTest extends WebTestCase
         $client->followRedirect();
         $this->assertSelectorExists('div:contains("There are 2 comments")');
     }
+
+    public function testConferencePage()
+    {
+        $client = static::createClient();
+        $crawler = $client->request('GET', '/');
+
+        $this->assertCount(2, $crawler->filter('h4'));
+
+        $client->clickLink('View');
+
+        $this->assertPageTitleContains('Amsterdam');
+        $this->assertResponseIsSuccessful();
+        $this->assertSelectorTextContains('h2', 'Amsterdam 2019');
+        $this->assertSelectorExists('div:contains("There are 1 comments")');
+    }
 }

--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -27,6 +27,10 @@
         </whitelist>
     </filter>

+    <extensions>
+        <extension class="DAMA\DoctrineTestBundle\PHPUnit\PHPUnitExtension" />
+    </extensions>
+
     <listeners>
         <listener class="Symfony\Bridge\PhpUnit\SymfonyTestsListener" />
     </listeners>