add unit tests

src/MetricsController.php

@@ -2,24 +2,48 @@
 
 namespace Superbalist\LaravelPrometheusExporter;
 
+use Illuminate\Contracts\Routing\ResponseFactory;
 use Illuminate\Routing\Controller;
 use Prometheus\RenderTextFormat;
 
 class MetricsController extends Controller
 {
+    /**
+     * @var ResponseFactory
+     */
+    protected $responseFactory;
+
     /**
      * @var $prometheusExporter
      */
     protected $prometheusExporter;
 
     /**
+     * @param ResponseFactory $responseFactory
      * @param PrometheusExporter $prometheusExporter
      */
-    public function __construct(PrometheusExporter $prometheusExporter)
+    public function __construct(ResponseFactory $responseFactory, PrometheusExporter $prometheusExporter)
     {
+        $this->responseFactory = $responseFactory;
         $this->prometheusExporter = $prometheusExporter;
     }
 
+    /**
+     * @return ResponseFactory
+     */
+    public function getResponseFactory()
+    {
+        return $this->responseFactory;
+    }
+
+    /**
+     * @return PrometheusExporter
+     */
+    public function getPrometheusExporter()
+    {
+        return $this->prometheusExporter;
+    }
+
     /**
      * GET /metrics
      *
@@ -35,7 +59,6 @@ class MetricsController extends Controller
         $renderer = new RenderTextFormat();
         $result = $renderer->render($metrics);
 
-        return response($result)
-            ->header('Content-Type', RenderTextFormat::MIME_TYPE);
+        return $this->responseFactory->make($result, 200, ['Content-Type' => RenderTextFormat::MIME_TYPE]);
     }
 }

src/PrometheusExporter.php

@@ -160,7 +160,7 @@ class PrometheusExporter
      */
     public function getGauge($name)
     {
-        return $this->prometheus->getCounter($this->namespace, $name);
+        return $this->prometheus->getGauge($this->namespace, $name);
     }
 
     /**

src/PrometheusServiceProvider.php

@@ -42,8 +42,8 @@ class PrometheusServiceProvider extends ServiceProvider
         });
         $this->app->alias(PrometheusExporter::class, 'prometheus');
 
-        $this->app->bind('prometheus.storage_adapter_factory', function ($app) {
-            return new StorageAdapterFactory($app);
+        $this->app->bind('prometheus.storage_adapter_factory', function () {
+            return new StorageAdapterFactory();
         });
 
         $this->app->bind(Adapter::class, function ($app) {

src/StorageAdapterFactory.php

@@ -2,7 +2,6 @@
 
 namespace Superbalist\LaravelPrometheusExporter;
 
-use Illuminate\Contracts\Container\Container;
 use InvalidArgumentException;
 use Prometheus\Storage\Adapter;
 use Prometheus\Storage\APC;
@@ -11,19 +10,6 @@ use Prometheus\Storage\Redis;
 
 class StorageAdapterFactory
 {
-    /**
-     * @var Container
-     */
-    protected $container;
-
-    /**
-     * @param Container $container
-     */
-    public function __construct(Container $container)
-    {
-        $this->container = $container;
-    }
-
     /**
      * Factory a storage adapter.
      *