Fixed test break.

tests/unit/TestCase.php

@@ -53,6 +53,22 @@ abstract class TestCase extends \PHPUnit_Framework_TestCase
         new $appClass(ArrayHelper::merge($defaultConfig, $config));
     }
 
+    protected function mockWebApplication($config = [], $appClass = '\yii\web\Application')
+    {
+        static $defaultConfig = [
+            'id' => 'testapp',
+            'basePath' => __DIR__,
+            'components' => [
+                'request' => [
+                    'cookieValidationKey' => 'wefJDF8sfdsfSDefwqdxj9oq',
+                ],
+            ]
+        ];
+        $defaultConfig['vendorPath'] = dirname(dirname(__DIR__)) . '/vendor';
+
+        new $appClass(ArrayHelper::merge($defaultConfig, $config));
+    }
+
     /**
      * Destroys application in Yii::$app by setting it to null.
      */

tests/unit/framework/widgets/ActiveFieldTest.php

@@ -27,7 +27,7 @@ class ActiveFieldTest extends \yiiunit\TestCase
         $_SERVER['SCRIPT_FILENAME'] = "index.php";
         $_SERVER['SCRIPT_NAME'] = "index.php";
         
-        $this->mockApplication([], 'yii\web\Application');
+        $this->mockWebApplication();
         
         Yii::setAlias('@testWeb', '/');
         Yii::setAlias('@testWebRoot', '@yiiunit/data/web');

tests/unit/framework/widgets/BreadcrumbsTest.php

@@ -20,7 +20,7 @@ class BreadcrumbsTest extends \yiiunit\TestCase
         $_SERVER['SCRIPT_FILENAME'] = "index.php";
         $_SERVER['SCRIPT_NAME'] = "index.php";
         
-        $this->mockApplication([], 'yii\web\Application');    
+        $this->mockWebApplication();
         $this->breadcrumbs = new Breadcrumbs();
     }