Created Common\ErrorHandler tests

module/Common/test/ErrorHandler/ErrorHandlerManagerTest.php

@@ -0,0 +1,45 @@
+<?php
+namespace ShlinkioTest\Shlink\Common\ErrorHandler;
+
+use PHPUnit_Framework_TestCase as TestCase;
+use Shlinkio\Shlink\Common\ErrorHandler\ErrorHandlerManager;
+use Zend\ServiceManager\ServiceManager;
+
+class ErrorHandlerManagerTest extends TestCase
+{
+    /**
+     * @var ErrorHandlerManager
+     */
+    protected $pluginManager;
+
+    public function setUp()
+    {
+        $this->pluginManager = new ErrorHandlerManager(new ServiceManager(), [
+            'services' => [
+                'foo' => function () {
+                },
+            ],
+            'invokables' => [
+                'invalid' => \stdClass::class,
+            ]
+        ]);
+    }
+
+    /**
+     * @test
+     */
+    public function callablesAreReturned()
+    {
+        $instance = $this->pluginManager->get('foo');
+        $this->assertInstanceOf(\Closure::class, $instance);
+    }
+
+    /**
+     * @test
+     * @expectedException \Zend\ServiceManager\Exception\InvalidServiceException
+     */
+    public function nonCallablesThrowException()
+    {
+        $this->pluginManager->get('invalid');
+    }
+}