Fix failing test

Author: SOHELAHMED7

tests/config/console.php

@@ -80,6 +80,9 @@
             'charset' => 'utf8',
             'tablePrefix'=>'itt_',
         ],
+        'cache' => [
+            'class' => 'yii\caching\FileCache',
+        ],
     ],
 ];
 

tests/unit/PathAutoCompletionTest.php

@@ -13,9 +13,11 @@ public function testComplete()
     {
         Yii::setAlias('@vendor', __DIR__.'/items');
         $this->prepareTempDir();
-        Yii::setAlias('@app', __DIR__.'/../specs');
         Yii::setAlias('@runtime', __DIR__.'/../tmp/app');
 
+        $this->mockRealApplication(); // to register cache component
+        Yii::setAlias('@app', __DIR__.'/../specs');
+        Yii::setAlias('@webroot', __DIR__.'@app/web');
 
         $completion = (new PathAutoCompletion())->complete();
         self::assertNotEmpty($completion);