/**
  * @covers WindowsAzure\MediaServices\Models\ContentKeyAuthorizationPolicyOption::requiredFields
  */
 public function testRequiredFields()
 {
     // Setup
     $contentKeyAuthorizationOptions = new ContentKeyAuthorizationPolicyOption();
     $fixture = ['KeyDeliveryType'];
     // Test
     $result = $contentKeyAuthorizationOptions->requiredFields();
     // Assert
     $this->assertEquals($fixture, $result);
 }