Added csrf middleware

1 files changed, 128 insertions, 0 deletions

diff --git a/tests/Unit/Middleware/VerifyCsrfTokenTest.php b/tests/Unit/Middleware/VerifyCsrfTokenTest.php
new file mode 100644
index 00000000..60280c5b
--- /dev/null
+++ b/tests/Unit/Middleware/VerifyCsrfTokenTest.php
@@ -0,0 +1,128 @@
+<?php
+
+namespace Engelsystem\Test\Unit\Middleware;
+
+use Engelsystem\Middleware\VerifyCsrfToken;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+use Psr\Http\Message\ResponseInterface;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use Symfony\Component\HttpFoundation\Session\SessionInterface;
+
+class VerifyCsrfTokenTest extends TestCase
+{
+    /**
+     * @covers \Engelsystem\Middleware\VerifyCsrfToken::process
+     * @covers \Engelsystem\Middleware\VerifyCsrfToken::isReading
+     */
+    public function testProcess()
+    {
+        /** @var ServerRequestInterface|MockObject $request */
+        $request = $this->getMockForAbstractClass(ServerRequestInterface::class);
+        /** @var RequestHandlerInterface|MockObject $handler */
+        $handler = $this->getMockForAbstractClass(RequestHandlerInterface::class);
+        /** @var ResponseInterface|MockObject $response */
+        $response = $this->getMockForAbstractClass(ResponseInterface::class);
+
+        $handler->expects($this->exactly(2))
+            ->method('handle')
+            ->with($request)
+            ->willReturn($response);
+
+        /** @var VerifyCsrfToken|MockObject $middleware */
+        $middleware = $this->getMockBuilder(VerifyCsrfToken::class)
+            ->disableOriginalConstructor()
+            ->setMethods(['notAuthorizedResponse', 'tokensMatch'])
+            ->getMock();
+
+        $middleware->expects($this->exactly(1))
+            ->method('notAuthorizedResponse')
+            ->willReturn($response);
+
+        $middleware->expects($this->exactly(2))
+            ->method('tokensMatch')
+            ->willReturnOnConsecutiveCalls(true, false);
+
+        // Results in true, false, false
+        $request->expects($this->exactly(3))
+            ->method('getMethod')
+            ->willReturnOnConsecutiveCalls('GET', 'POST', 'DELETE');
+
+        $middleware->process($request, $handler);
+        $middleware->process($request, $handler);
+        $middleware->process($request, $handler);
+    }
+
+    /**
+     * @covers \Engelsystem\Middleware\VerifyCsrfToken::__construct
+     * @covers \Engelsystem\Middleware\VerifyCsrfToken::tokensMatch
+     */
+    public function testTokensMatch()
+    {
+        /** @var ServerRequestInterface|MockObject $request */
+        $request = $this->getMockForAbstractClass(ServerRequestInterface::class);
+        /** @var RequestHandlerInterface|MockObject $handler */
+        $handler = $this->getMockForAbstractClass(RequestHandlerInterface::class);
+        /** @var ResponseInterface|MockObject $response */
+        $response = $this->getMockForAbstractClass(ResponseInterface::class);
+        /** @var ResponseInterface|MockObject $noAuthResponse */
+        $noAuthResponse = $this->getMockForAbstractClass(ResponseInterface::class);
+        /** @var SessionInterface|MockObject $session */
+        $session = $this->getMockForAbstractClass(SessionInterface::class);
+
+        /** @var VerifyCsrfToken|MockObject $middleware */
+        $middleware = $this->getMockBuilder(VerifyCsrfToken::class)
+            ->setConstructorArgs([$session])
+            ->setMethods(['isReading', 'notAuthorizedResponse'])
+            ->getMock();
+
+        $middleware->expects($this->atLeastOnce())
+            ->method('isReading')
+            ->willReturn(false);
+        $middleware->expects($this->exactly(1))
+            ->method('notAuthorizedResponse')
+            ->willReturn($noAuthResponse);
+
+        $handler->expects($this->exactly(3))
+            ->method('handle')
+            ->willReturn($response);
+
+        $request->expects($this->exactly(4))
+            ->method('getParsedBody')
+            ->willReturnOnConsecutiveCalls(
+                null,
+                null,
+                ['_token' => 'PostFooToken'],
+                ['_token' => 'PostBarToken']
+            );
+        $request->expects($this->exactly(4))
+            ->method('getHeader')
+            ->with('X-CSRF-TOKEN')
+            ->willReturnOnConsecutiveCalls(
+                [],
+                ['HeaderFooToken'],
+                [],
+                ['HeaderBarToken']
+            );
+
+        $session->expects($this->exactly(4))
+            ->method('get')
+            ->with('_token')
+            ->willReturnOnConsecutiveCalls(
+                'NotAvailableToken',
+                'HeaderFooToken',
+                'PostFooToken',
+                'PostBarToken'
+            );
+
+        // Not tokens
+        $this->assertEquals($noAuthResponse, $middleware->process($request, $handler));
+        // Header token
+        $this->assertEquals($response, $middleware->process($request, $handler));
+        // POST token
+        $this->assertEquals($response, $middleware->process($request, $handler));
+        // Header and POST tokens
+        $this->assertEquals($response, $middleware->process($request, $handler));
+    }
+}