PhpBrew\BuildSettings\BuildSettings::hasVariant PHP Method

    public function hasVariant($name)
    {
        return isset($this->variants[$name]);
    }

 public function testRemoveVariant()
 {
     $settings = new BuildSettings();
     $settings->enableVariant('sqlite', true);
     ok($settings->hasVariant('sqlite'));
     $settings->removeVariant('sqlite');
     not_ok($settings->hasVariant('sqlite'));
 }