Ergo\Http\Url::hasScheme PHP Method

    public function hasScheme()
    {
        return !empty($this->_fragments['scheme']);
    }

 public function testHasMethods()
 {
     $url = new Http\Url('http://example.org/?query#fragment');
     $this->assertTrue($url->hasHost(), 'URL should have host');
     $this->assertTrue($url->hasScheme(), 'URL should have scheme');
     $this->assertTrue($url->hasQueryString(), 'URL should have query string');
     $this->assertTrue($url->hasFragmentString(), 'URL should have fragment string');
     $this->assertTrue($url->hasPort(), 'URL should have port');
     $this->assertTrue($url->hasDefaultPort(), 'URL should have default port');
     $url = new Http\Url('/');
     $this->assertFalse($url->hasHost(), 'URL should not have host');
     $this->assertFalse($url->hasScheme(), 'URL should not have scheme');
     $this->assertFalse($url->hasQueryString(), 'URL should not have query string');
     $this->assertFalse($url->hasFragmentString(), 'URL should not have fragment string');
     $this->assertFalse($url->hasPort(), 'URL should not have port');
     $this->assertFalse($url->hasDefaultPort(), 'URL should not have default port');
 }