Add unit tests on RequestListener class

Tests/unit/RequestListenerTest.php

@@ -0,0 +1,152 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Weglot\TranslateBundle\Tests;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Component\HttpFoundation\HeaderBag;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+use Weglot\Parser\Parser;
+use Weglot\TranslateBundle\Listener\RequestListener;
+use Weglot\Client\Client;
+
+final class RequestListenerTest extends TestCase
+{
+    private $parser;
+    private $destinationLanguages;
+    private $kernel;
+
+    public function setUp()
+    {
+        $this->kernel = $this->createMock(HttpKernelInterface::class);
+        $this->parser = $this->createMock(Parser::class);
+
+        $client = $this->createMock(Client::class);
+        $client->method('setHttpClient');
+
+        $this->parser->method('getClient')->willReturn($client);
+        $this->parser->method('translate')->willReturn('Salut');
+
+        $this->destinationLanguages = ['FR','DE'];
+    }
+
+    /**
+     * @test
+     */
+    public function on_filterReponse_event_when_request_is_XMLHttpRequest()
+    {
+        $request = $this->createXmlHttpRequest();
+        $request->setLocale('FR');
+        $response = $this->createResponse();
+
+        $event = new FilterResponseEvent(
+            $this->kernel,
+            $request,
+            HttpKernelInterface::MASTER_REQUEST,
+            $response
+        );
+
+        $listener = new RequestListener($this->parser, $this->destinationLanguages);
+        $listener->onKernelResponse($event);
+        $this->assertEquals($response->getContent(), 'Hello');
+    }
+
+    /**
+     * @test
+     */
+    public function on_filterReponse_event_when_request_is_HttpRequest_and_needs_translation()
+    {
+        $request = $this->createHttpRequest();
+        $request->setLocale('FR');
+        $response = $this->createResponse();
+
+        $event = new FilterResponseEvent(
+            $this->kernel,
+            $request,
+            HttpKernelInterface::MASTER_REQUEST,
+            $response
+        );
+
+        $listener = new RequestListener($this->parser, $this->destinationLanguages);
+        $listener->onKernelResponse($event);
+        $this->assertEquals('Salut', $response->getContent());
+    }
+
+    /**
+     * @test
+     */
+    public function on_filterReponse_event_when_request_is_HttpRequest_and_doesnt_need_translation()
+    {
+        $request = $this->createHttpRequest();
+        $request->setLocale('EN');
+        $response = $this->createResponse();
+
+        $event = new FilterResponseEvent(
+            $this->kernel,
+            $request,
+            HttpKernelInterface::MASTER_REQUEST,
+            $response
+        );
+
+        $listener = new RequestListener($this->parser, $this->destinationLanguages);
+        $listener->onKernelResponse($event);
+        $this->assertEquals('Hello', $response->getContent());
+    }
+
+    /**
+     * @test
+     */
+    public function on_filterReponse_event_when_request_is_HttpRequest_and_from_banned_route()
+    {
+        $request = $this->createHttpRequest(true);
+        $request->setLocale('EN');
+        $response = $this->createResponse();
+
+        $event = new FilterResponseEvent(
+            $this->kernel,
+            $request,
+            HttpKernelInterface::MASTER_REQUEST,
+            $response
+        );
+
+        $listener = new RequestListener($this->parser, $this->destinationLanguages);
+        $listener->onKernelResponse($event);
+        $this->assertEquals('Hello', $response->getContent());
+    }
+
+    private function createRequest()
+    {
+        $request = new Request();
+        $request->setDefaultLocale('EN');
+        return $request;
+    }
+
+    private function createHttpRequest($fromBannedRoute = false)
+    {
+        $request = $this->createRequest();
+
+        $route = 'hello-world';
+        if ($fromBannedRoute) {
+            $route = '/_profiler/open';
+        }
+        $request->request->add(['_weglot_router_path' => $route]);
+
+        return $request;
+    }
+
+    private function createXmlHttpRequest()
+    {
+        $request = $this->createRequest();
+        $request->headers->add(['X-Requested-With' => 'XMLHttpRequest']);
+        return $request;
+    }
+
+    private function createResponse()
+    {
+        return new Response('Hello', 200);
+    }
+}