Create unit tests for WidgetMaker trait

modules/backend/traits/WidgetMaker.php

@@ -24,7 +24,9 @@ trait WidgetMaker
      */
     public function makeWidget($class, $configuration = [])
     {
-        $controller = ($this->controller) ?: $this;
+        $controller = property_exists($this, 'controller') && $this->controller
+            ? $this->controller
+            : $this;
 
         if (!class_exists($class)) {
             throw new SystemException(Lang::get('backend::lang.widget.not_registered', [

tests/unit/backend/classes/WidgetManagerTest.php

@@ -5,23 +5,6 @@ use Backend\Classes\WidgetManager;
 
 class WidgetManagerTest extends TestCase
 {
-    public function testMakeWidget()
-    {
-        $manager = WidgetManager::instance();
-        $widget = $manager->makeWidget('Backend\Widgets\Search');
-        $this->assertTrue($widget instanceof \Backend\Widgets\Search);
-
-        $controller = new Controller;
-        $widget = $manager->makeWidget('Backend\Widgets\Search', $controller);
-        $this->assertInstanceOf('Backend\Widgets\Search', $widget);
-        $this->assertInstanceOf('Backend\Classes\Controller', $widget->getController());
-
-        $config = ['test' => 'config'];
-        $widget = $manager->makeWidget('Backend\Widgets\Search', null, $config);
-        $this->assertInstanceOf('Backend\Widgets\Search', $widget);
-        $this->assertEquals('config', $widget->getConfig('test'));
-    }
-
     public function testListFormWidgets()
     {
         $manager = WidgetManager::instance();

tests/unit/backend/traits/WidgetMakerTest.php

@@ -0,0 +1,60 @@
+<?php
+
+use Backend\Classes\Controller;
+
+class ExampleTraitClass
+{
+    use \Backend\Traits\WidgetMaker;
+
+    public function __construct()
+    {
+        $this->controller = new Controller;
+    }
+}
+
+class WidgetMakerTest extends TestCase
+{
+    /**
+     * The object under test.
+     *
+     * @var object
+     */
+    private $traitObject;
+
+    /**
+     * Sets up the fixture.
+     *
+     * This method is called before a test is executed.
+     *
+     * @return void
+     */
+    public function setUp()
+    {
+        $traitName = 'Backend\Traits\WidgetMaker';
+        $this->traitObject = $this->getObjectForTrait($traitName);
+    }
+
+    public function testTraitObject()
+    {
+        $maker = $this->traitObject;
+
+        $widget = $maker->makeWidget('Backend\Widgets\Search');
+        $this->assertTrue($widget instanceof \Backend\Widgets\Search);
+    }
+
+    public function testMakeWidget()
+    {
+        $manager = new ExampleTraitClass;
+
+        $controller = new Controller;
+        $widget = $manager->makeWidget('Backend\Widgets\Search');
+        $this->assertInstanceOf('Backend\Widgets\Search', $widget);
+        $this->assertInstanceOf('Backend\Classes\Controller', $widget->getController());
+
+        $config = ['test' => 'config'];
+        $widget = $manager->makeWidget('Backend\Widgets\Search', $config);
+        $this->assertInstanceOf('Backend\Widgets\Search', $widget);
+        $this->assertEquals('config', $widget->getConfig('test'));
+    }
+
+}