Added test

phpunit.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit backupGlobals="false"
+    backupStaticAttributes="false"
+    colors="true"
+    convertErrorsToExceptions="true"
+    convertNoticesToExceptions="true"
+    convertWarningsToExceptions="true"
+    processIsolation="false"
+    stopOnFailure="false"
+    stopOnError="false"
+    stopOnIncomplete="false"
+    stopOnSkipped="false"
+    syntaxCheck="false"
+    bootstrap="tests/bootstrap.php">
+    <testsuites>
+        <testsuite name="Application Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+</phpunit>

tests/bootstrap.php

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+<?php
+
+// Autoload
+require_once __DIR__.'/../src/autoload.php';

tests/functional/ApplicationTest.php

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+<?php
+
+use Silex\WebTestCase;
+use Symfony\Component\HttpFoundation\SessionStorage\FilesystemSessionStorage;
+use Silex\Provider\DoctrineServiceProvider;
+
+class ApplicationTest extends WebTestCase
+{
+    public function createApplication()
+    {
+        // Silex
+        $this->app = require __DIR__.'/../../src/app.php';
+
+        // Tests mode
+        $this->app['debug'] = true;
+        unset($this->app['exception_handler']);
+        $app['translator.messages'] = array();
+
+        // Use FilesystemSessionStorage to store session
+        $this->app['session.storage'] = $this->app->share(function() {
+            return new FilesystemSessionStorage(sys_get_temp_dir());
+        });
+
+        // Controllers
+        require __DIR__ . '/../../src/controllers.php';
+
+        return $app;
+    }
+
+    public function test404()
+    {
+        $client = $this->createClient();
+        $crawler = $client->request('GET', '/give-me-a-404');
+
+        $this->assertTrue($client->getResponse()->isNotFound());
+    }
+
+    public function testLogin()
+    {
+        $client = $this->createClient();
+        $crawler = $client->request('GET', '/login');
+
+        $this->assertTrue($client->getResponse()->isOk());
+
+        $form = $crawler->selectButton('Send')->form(array());
+        $crawler = $client->submit($form);
+        $this->assertEquals(2, $crawler->filter('.error')->count());
+
+        $form = $crawler->selectButton('Send')->form();
+        $crawler = $client->submit($form, array(
+            'form[email]'     => 'not an email',
+            'form[password]'  => 'wrong password',
+        ));
+        $this->assertEquals(1, $crawler->filter('.error')->count());
+
+        $form = $crawler->selectButton('Send')->form();
+        $crawler = $client->submit($form, array(
+            'form[email]'     => 'email@example.com',
+            'form[password]'  => 'wrong password',
+        ));
+        $this->assertEquals(1, $crawler->filter('.error')->count());
+
+        $form = $crawler->selectButton('Send')->form();
+        $crawler = $client->submit($form, array(
+            'form[email]'     => 'email@example.com',
+            'form[password]'  => 'password',
+        ));
+        $this->assertEquals(0, $crawler->filter('.error')->count());
+        $crawler = $client->followRedirect();
+        $this->assertEquals(1, $crawler->filter('a[href="/logout"]')->count());
+    }
+}