diff --git a/tests/unit/Examples/ExamplesTest.php b/tests/unit/Examples/ExamplesTest.php
index 7aab5c8..26cb720 100644
--- a/tests/unit/Examples/ExamplesTest.php
+++ b/tests/unit/Examples/ExamplesTest.php
@@ -13,6 +13,7 @@ class ExamplesTest extends \Codeception\Test\Unit
 {
     public function testSlicing()
     {
+        new SliceSelector('::');
         $originalArray = [1, 2, 3, 4, 5, 6, 7, 8, 9];
         $originalView = ArrayView::toView($originalArray);
 
@@ -90,4 +91,9 @@ public function testCombinedSubview()
         $subview[':'] = [55, 77];
         $this->assertSame([1, 2, 3, 4, 55, 6, 77, 8, 9, 10], $originalArray);
     }
+
+    protected function _setUp()
+    {
+        $_ = new MaskSelector([]); // TODO why for 7.4???
+    }
 }