Author: Victor Bocharsky (bocharsky.bw@gmail.com)
Inheritance: implements FileNamingResolver\NamingStrategy\NamingStrategyInterface
 public function testGenerateUniqueString()
 {
     $uniqueString1 = AbstractNamingStrategy::generateUniqueString();
     $uniqueString2 = AbstractNamingStrategy::generateUniqueString();
     $this->assertNotEquals($uniqueString1, $uniqueString2);
 }