diff --git a/tests/Middlewares/PruneCacheMiddlewareTest.php b/tests/Middlewares/PruneCacheMiddlewareTest.php
new file mode 100644
index 0000000..a2c89c7
--- /dev/null
+++ b/tests/Middlewares/PruneCacheMiddlewareTest.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace Tests\Middlewares;
+
+use App\Middlewares\PruneCacheMiddleware;
+use PHPUnit\Framework\MockObject\MockObject;
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Server\RequestHandlerInterface;
+use Symfony\Component\Cache\Adapter\FilesystemAdapter;
+use Symfony\Component\Cache\Adapter\PhpFilesAdapter;
+use Symfony\Contracts\Cache\CacheInterface;
+use Tests\TestCase;
+
+/** @covers \App\Middlewares\PruneCacheMiddleware */
+class PruneCacheMiddlewareTest extends TestCase
+{
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->container->set('cache_lottery', 100);
+    }
+
+    /** @dataProvider pruneableCacheAdapters */
+    public function test_it_prunes_the_cache_whe_using_a_pruneable_adapter_and_winning_the_lottery(string $cacheAdapter): void
+    {
+        /** @var CacheInterface&MockObject */
+        $cache = $this->createMock($cacheAdapter);
+        $cache->expects($this->once())->method('prune');
+
+        (new PruneCacheMiddleware($this->config, $cache))(
+            $this->createMock(ServerRequestInterface::class),
+            $this->createMock(RequestHandlerInterface::class)
+        );
+    }
+
+    public function pruneableCacheAdapters(): array
+    {
+        return [
+            [FilesystemAdapter::class],
+            [PhpFilesAdapter::class],
+        ];
+    }
+}