diff --git a/docs/guide/db-query-builder.md b/docs/guide/db-query-builder.md
index 2d9184a..fc99c6c 100644
--- a/docs/guide/db-query-builder.md
+++ b/docs/guide/db-query-builder.md
@@ -235,7 +235,7 @@ filter variable against white list. In case you need to get column name from use
 guide article. For example the following code is vulnerable:
 
 ```php
-// Vulnarable code:
+// Vulnerable code:
 $column = $request->get('column');
 $value = $request->get('value);
 $query->where([$column => $value]);
@@ -320,12 +320,12 @@ the operator can be one of the following:
 Using the Operator Format, Yii internally uses parameter binding for values, so in contrast to the [string format](#string-format),
 here you do not have to add parameters manually. However, note that Yii never escapes column names, so if you pass
 a variable as a column name, the application will likely become vulnerable to SQL injection attack. In order to keep
-application secure, either either do not use variables as column names or filter variable against white list.
+application secure, either do not use variables as column names or filter variable against white list.
 In case you need to get column name from user, read the [Filtering Data](output-data-widgets.md#filtering-data)
 guide article. For example the following code is vulnerable:
 
 ```php
-// Vulnarable code:
+// Vulnerable code:
 $column = $request->get('column');
 $value = $request->get('value);
 $query->where(['=', $column, $value]);
diff --git a/framework/UPGRADE.md b/framework/UPGRADE.md
index 28c43a2..cafb08c 100644
--- a/framework/UPGRADE.md
+++ b/framework/UPGRADE.md
@@ -233,7 +233,7 @@ Upgrade from Yii 2.0.12
   However, this change may affect your application if you have code that uses method `yii\base\Module::has()` in order
   to check existence of the component exactly in this specific module. In this case make sure the logic is not corrupted.
 
-* If you are using "asset" command to compress assets and your web applicaiton `assetManager` has `linkAssets` turned on,
+* If you are using "asset" command to compress assets and your web application `assetManager` has `linkAssets` turned on,
   make sure that "asset" command config has `linkAssets` turned on as well.
 
 
diff --git a/tests/framework/behaviors/CacheableWidgetBehaviorTest.php b/tests/framework/behaviors/CacheableWidgetBehaviorTest.php
index 0ae106a..fdcf5e0 100644
--- a/tests/framework/behaviors/CacheableWidgetBehaviorTest.php
+++ b/tests/framework/behaviors/CacheableWidgetBehaviorTest.php
@@ -18,14 +18,14 @@ class CacheableWidgetBehaviorTest extends TestCase
     /**
      * Default-initialized simple cacheable widget mock.
      *
-     * @var PHPUnit_Framework_MockObject_MockObject
+     * @var PHPUnit_Framework_MockObject_MockObject|SimpleCacheableWidget|CacheableWidgetBehavior
      */
     private $simpleWidget;
 
     /**
      * Default-initialized dynamic cacheable widget mock.
      *
-     * @var PHPUnit_Framework_MockObject_MockObject
+     * @var PHPUnit_Framework_MockObject_MockObject|DynamicCacheableWidget|CacheableWidgetBehavior
      */
     private $dynamicWidget;
 
@@ -38,6 +38,9 @@ class CacheableWidgetBehaviorTest extends TestCase
         $this->initializeWidgetMocks();
     }
 
+    /**
+     * @throws \Exception
+     */
     public function testWidgetIsRunWhenCacheIsEmpty()
     {
         $this->simpleWidget
@@ -48,6 +51,9 @@ class CacheableWidgetBehaviorTest extends TestCase
         $this->assertEquals('contents', $contents);
     }
 
+    /**
+     * @throws \Exception
+     */
     public function testWidgetIsNotRunWhenCacheIsNotEmpty()
     {
         $this->simpleWidget->cacheDuration = 0;
@@ -55,11 +61,14 @@ class CacheableWidgetBehaviorTest extends TestCase
             ->expects($this->once())
             ->method('run');
 
-        for ($counter = 0; $counter <= 42; $counter++) {
+        for ($counter = 0; $counter <= 1; $counter++) {
             $this->assertEquals('contents', $this->simpleWidget->test());
         }
     }
 
+    /**
+     * @throws \Exception
+     */
     public function testDynamicContent()
     {
         $this->dynamicWidget->cacheDuration = 0;
@@ -67,7 +76,7 @@ class CacheableWidgetBehaviorTest extends TestCase
             ->expects($this->once())
             ->method('run');
 
-        for ($counter = 0; $counter <= 42; $counter++) {
+        for ($counter = 0; $counter <= 1; $counter++) {
             $expectedContents = sprintf('<div>dynamic contents: %d</div>', $counter);
             $this->assertEquals($expectedContents, $this->dynamicWidget->test());
         }
@@ -104,7 +113,8 @@ class CacheableWidgetBehaviorTest extends TestCase
 
     /**
      * Returns a widget mock.
-     *
+     * @param $widgetClass
+     * @return PHPUnit_Framework_MockObject_MockObject
      */
     private function getWidgetMock($widgetClass)
     {