Singleton parameter is optional.

Signed-off-by: Joshua Parker <[email protected]>

Author: nomadicjosh

Configuration/ApplicationBuilder.php

@@ -53,8 +53,12 @@ public function withProviders(array $providers = []): self
      * @param array $singletons
      * @return $this
      */
-    public function withSingletons(array $singletons): self
+    public function withSingletons(array $singletons = []): self
     {
+        if (empty($singletons)) {
+            return $this;
+        }
+
         $this->registered(function ($app) use ($singletons) {
             foreach ($singletons as $key => $callable) {
                 $app->singleton($key, $callable);

tests/Pipes/PipelineTest.php

@@ -2,7 +2,7 @@
 
 declare(strict_types=1);
 
-use Codefy\Framework\Configuration\ApplicationBuilder;
+use Codefy\Framework\Application;
 use Codefy\Framework\Pipeline\Pipeline;
 use Codefy\Framework\Pipeline\PipelineBuilder;
 use Codefy\Framework\tests\Pipes\PipeFour;
@@ -11,10 +11,10 @@
 use Codefy\Framework\tests\Pipes\PipeTwo;
 use PHPUnit\Framework\Assert;
 
-/** @var ApplicationBuilder $app */
+/** @var Application $app */
 $app = require_once __DIR__ . '/../vendor/bootstrap.php';
 
-$pipeline = new Pipeline($app->return());
+$pipeline = new Pipeline($app);
 
 it('has exception handled by onFailure method.', function () use ($pipeline) {
     $result = $pipeline

tests/vendor/bootstrap.php

@@ -4,7 +4,14 @@
 use Qubus\Exception\Data\TypeException;
 
 try {
-    return Application::configure(['basePath' => dirname(path: __DIR__, levels: 2)]);
+    return Application::configure(['basePath' => dirname(path: __DIR__, levels: 2)])
+            ->withProviders([
+                // fill in custom providers
+            ])
+            ->withSingletons([
+                // fill in custom singletons
+            ])
+            ->return();
 } catch (TypeException $e) {
     return $e->getMessage();
 }