diff --git a/tests/framework/helpers/ArrayHelperTest.php b/tests/framework/helpers/ArrayHelperTest.php
index 224ef06692e..282ae7f304f 100644
--- a/tests/framework/helpers/ArrayHelperTest.php
+++ b/tests/framework/helpers/ArrayHelperTest.php
@@ -44,7 +44,9 @@ class ArrayHelperTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Helper must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testToArray()
@@ -267,6 +269,7 @@ public function testMultisortUseSort()
         $sort = new Sort([
             'attributes' => ['name', 'age'],
             'defaultOrder' => ['name' => SORT_ASC],
+            'params' => [],
         ]);
         $orders = $sort->getOrders();
 
@@ -284,6 +287,7 @@ public function testMultisortUseSort()
         $sort = new Sort([
             'attributes' => ['name', 'age'],
             'defaultOrder' => ['name' => SORT_ASC, 'age' => SORT_DESC],
+            'params' => [],
         ]);
         $orders = $sort->getOrders();
 
diff --git a/tests/framework/helpers/ConsoleTest.php b/tests/framework/helpers/ConsoleTest.php
index 61f777de38d..89521067d44 100644
--- a/tests/framework/helpers/ConsoleTest.php
+++ b/tests/framework/helpers/ConsoleTest.php
@@ -12,6 +12,14 @@
  */
 class ConsoleTest extends TestCase
 {
+    protected function setUp()
+    {
+        parent::setUp();
+
+        // destroy application, Helper must work without Yii::$app
+        $this->destroyApplication();
+    }
+
     public function testStripAnsiFormat()
     {
         ob_start();
diff --git a/tests/framework/helpers/FileHelperTest.php b/tests/framework/helpers/FileHelperTest.php
index d70c3787ad5..ca976db12c0 100644
--- a/tests/framework/helpers/FileHelperTest.php
+++ b/tests/framework/helpers/FileHelperTest.php
@@ -33,8 +33,14 @@ public function setUp()
              */
             $this->markTestInComplete('Unit tests runtime directory should be local!');
         }
+
+        parent::setUp();
+
+        // destroy application, Helper must work without Yii::$app
+        $this->destroyApplication();
     }
 
+
     public function tearDown()
     {
         $this->removeDir($this->testFilePath);
diff --git a/tests/framework/helpers/InflectorTest.php b/tests/framework/helpers/InflectorTest.php
index 0d8875c6a06..2408ba131e3 100644
--- a/tests/framework/helpers/InflectorTest.php
+++ b/tests/framework/helpers/InflectorTest.php
@@ -10,6 +10,14 @@
  */
 class InflectorTest extends TestCase
 {
+    protected function setUp()
+    {
+        parent::setUp();
+
+        // destroy application, Helper must work without Yii::$app
+        $this->destroyApplication();
+    }
+
     public function testPluralize()
     {
         $testData = [
diff --git a/tests/framework/helpers/JsonTest.php b/tests/framework/helpers/JsonTest.php
index a88ef943a6e..9788858a4e9 100644
--- a/tests/framework/helpers/JsonTest.php
+++ b/tests/framework/helpers/JsonTest.php
@@ -14,6 +14,14 @@
  */
 class JsonTest extends TestCase
 {
+    protected function setUp()
+    {
+        parent::setUp();
+
+        // destroy application, Helper must work without Yii::$app
+        $this->destroyApplication();
+    }
+
     public function testEncode()
     {
         // basic data encoding
diff --git a/tests/framework/helpers/MarkdownTest.php b/tests/framework/helpers/MarkdownTest.php
index af83c626e7c..3e993609f16 100644
--- a/tests/framework/helpers/MarkdownTest.php
+++ b/tests/framework/helpers/MarkdownTest.php
@@ -12,6 +12,14 @@
  */
 class MarkdownTest extends TestCase
 {
+    protected function setUp()
+    {
+        parent::setUp();
+
+        // destroy application, Helper must work without Yii::$app
+        $this->destroyApplication();
+    }
+
     public function testOriginalFlavor()
     {
         $text = <<<TEXT
diff --git a/tests/framework/helpers/VarDumperTest.php b/tests/framework/helpers/VarDumperTest.php
index 3e34ad3cd1d..d2a295663e5 100644
--- a/tests/framework/helpers/VarDumperTest.php
+++ b/tests/framework/helpers/VarDumperTest.php
@@ -10,6 +10,14 @@
  */
 class VarDumperTest extends TestCase
 {
+    protected function setUp()
+    {
+        parent::setUp();
+
+        // destroy application, Helper must work without Yii::$app
+        $this->destroyApplication();
+    }
+
     public function testDumpIncompleteObject()
     {
         $serializedObj = 'O:16:"nonExistingClass":0:{}';
diff --git a/tests/framework/validators/BooleanValidatorTest.php b/tests/framework/validators/BooleanValidatorTest.php
index c3f013017a7..29b008f646b 100644
--- a/tests/framework/validators/BooleanValidatorTest.php
+++ b/tests/framework/validators/BooleanValidatorTest.php
@@ -14,7 +14,9 @@ class BooleanValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testValidateValue()
diff --git a/tests/framework/validators/CompareValidatorTest.php b/tests/framework/validators/CompareValidatorTest.php
index 181e98abe51..e831cb1e9cf 100644
--- a/tests/framework/validators/CompareValidatorTest.php
+++ b/tests/framework/validators/CompareValidatorTest.php
@@ -14,7 +14,9 @@ class CompareValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testValidateValueException()
diff --git a/tests/framework/validators/DefaultValueValidatorTest.php b/tests/framework/validators/DefaultValueValidatorTest.php
index 80a0fdcdb13..5699415d2b5 100644
--- a/tests/framework/validators/DefaultValueValidatorTest.php
+++ b/tests/framework/validators/DefaultValueValidatorTest.php
@@ -13,7 +13,9 @@ class DefaultValueValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testValidateAttribute()
diff --git a/tests/framework/validators/EachValidatorTest.php b/tests/framework/validators/EachValidatorTest.php
index 743052794b6..a2757d811f3 100644
--- a/tests/framework/validators/EachValidatorTest.php
+++ b/tests/framework/validators/EachValidatorTest.php
@@ -14,7 +14,9 @@ class EachValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testArrayFormat()
diff --git a/tests/framework/validators/EmailValidatorTest.php b/tests/framework/validators/EmailValidatorTest.php
index 6e59dee56c3..5fa88ae0eef 100644
--- a/tests/framework/validators/EmailValidatorTest.php
+++ b/tests/framework/validators/EmailValidatorTest.php
@@ -13,7 +13,9 @@ class EmailValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testValidateValue()
diff --git a/tests/framework/validators/ExistValidatorTest.php b/tests/framework/validators/ExistValidatorTest.php
index 306f98dc8f7..d3aacc4719a 100644
--- a/tests/framework/validators/ExistValidatorTest.php
+++ b/tests/framework/validators/ExistValidatorTest.php
@@ -14,10 +14,12 @@
 
 abstract class ExistValidatorTest extends DatabaseTestCase
 {
-    public function setUp()
+    protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
         ActiveRecord::$db = $this->getConnection();
     }
 
diff --git a/tests/framework/validators/FileValidatorTest.php b/tests/framework/validators/FileValidatorTest.php
index 8775bd5f39a..bfa88e41ce5 100644
--- a/tests/framework/validators/FileValidatorTest.php
+++ b/tests/framework/validators/FileValidatorTest.php
@@ -14,8 +14,9 @@
  */
 class FileValidatorTest extends TestCase
 {
-    public function setUp()
+    protected function setUp()
     {
+        parent::setUp();
         $this->mockApplication();
     }
 
diff --git a/tests/framework/validators/FilterValidatorTest.php b/tests/framework/validators/FilterValidatorTest.php
index b554e48f139..9512c2f6222 100644
--- a/tests/framework/validators/FilterValidatorTest.php
+++ b/tests/framework/validators/FilterValidatorTest.php
@@ -14,7 +14,8 @@ class FilterValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testAssureExceptionOnInit()
diff --git a/tests/framework/validators/IpValidatorTest.php b/tests/framework/validators/IpValidatorTest.php
index 1fc2a7e138d..56f5d9695c5 100644
--- a/tests/framework/validators/IpValidatorTest.php
+++ b/tests/framework/validators/IpValidatorTest.php
@@ -14,7 +14,8 @@ class IpValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testInitException()
diff --git a/tests/framework/validators/NumberValidatorTest.php b/tests/framework/validators/NumberValidatorTest.php
index 7959d1a48ee..b4456a5fa97 100644
--- a/tests/framework/validators/NumberValidatorTest.php
+++ b/tests/framework/validators/NumberValidatorTest.php
@@ -46,8 +46,11 @@ private function restoreLocale()
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
         $this->oldLocale = setlocale(LC_NUMERIC, 0);
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testEnsureMessageOnInit()
diff --git a/tests/framework/validators/RangeValidatorTest.php b/tests/framework/validators/RangeValidatorTest.php
index f882eb1153c..f995740327d 100644
--- a/tests/framework/validators/RangeValidatorTest.php
+++ b/tests/framework/validators/RangeValidatorTest.php
@@ -14,7 +14,9 @@ class RangeValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testInitException()
diff --git a/tests/framework/validators/RegularExpressionValidatorTest.php b/tests/framework/validators/RegularExpressionValidatorTest.php
index adbf7be84b6..bafb1bc36a0 100644
--- a/tests/framework/validators/RegularExpressionValidatorTest.php
+++ b/tests/framework/validators/RegularExpressionValidatorTest.php
@@ -14,7 +14,9 @@ class RegularExpressionValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testValidateValue()
diff --git a/tests/framework/validators/RequiredValidatorTest.php b/tests/framework/validators/RequiredValidatorTest.php
index 0c206e4ccf0..6f43bff7057 100644
--- a/tests/framework/validators/RequiredValidatorTest.php
+++ b/tests/framework/validators/RequiredValidatorTest.php
@@ -13,7 +13,9 @@ class RequiredValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testValidateValueWithDefaults()
diff --git a/tests/framework/validators/UniqueValidatorTest.php b/tests/framework/validators/UniqueValidatorTest.php
index afdb0c44b46..c6248d57608 100644
--- a/tests/framework/validators/UniqueValidatorTest.php
+++ b/tests/framework/validators/UniqueValidatorTest.php
@@ -16,11 +16,13 @@
 
 abstract class UniqueValidatorTest extends DatabaseTestCase
 {
-    public function setUp()
+    protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
         ActiveRecord::$db = $this->getConnection();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testAssureMessageSetOnInit()
diff --git a/tests/framework/validators/UrlValidatorTest.php b/tests/framework/validators/UrlValidatorTest.php
index 063d172f7a1..1448866300d 100644
--- a/tests/framework/validators/UrlValidatorTest.php
+++ b/tests/framework/validators/UrlValidatorTest.php
@@ -14,7 +14,9 @@ class UrlValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     public function testValidateValue()
diff --git a/tests/framework/validators/ValidatorTest.php b/tests/framework/validators/ValidatorTest.php
index eb3ab054221..cb87e44a5a1 100644
--- a/tests/framework/validators/ValidatorTest.php
+++ b/tests/framework/validators/ValidatorTest.php
@@ -17,7 +17,9 @@ class ValidatorTest extends TestCase
     protected function setUp()
     {
         parent::setUp();
-        $this->mockApplication();
+
+        // destroy application, Validator must work without Yii::$app
+        $this->destroyApplication();
     }
 
     protected function getTestModel($additionalAttributes = [])