Pop\File\File::addAllowedTypes PHP Method

    public function addAllowedTypes(array $types)
    {
        foreach ($types as $key => $value) {
            $this->allowed[$key] = $value;
        }
    }

 public function testAllowedTypes()
 {
     $f = new File(__DIR__ . '/../tmp/access.txt', array('txt' => 'text/plain'));
     $this->assertFalse($f->isAllowed('php'));
     $this->assertTrue(is_array($f->getAllowedTypes()));
     $f->setAllowedTypes(array('txt' => 'text/plain', 'php' => 'text/plain'));
     $f->addAllowedTypes(array('sql' => 'text/plain'));
     $this->assertTrue($f->isAllowed('php'));
 }