public function testDuplicate()
{
$obj1 = new VersionedTest_Subclass();
$obj1->ExtraField = 'Foo';
$obj1->write();
// version 1
$obj1->copyVersionToStage(Versioned::DRAFT, Versioned::LIVE);
$obj1->ExtraField = 'Foo2';
$obj1->write();
// version 2
// Make duplicate
$obj2 = $obj1->duplicate();
// Check records differ
$this->assertNotEquals($obj1->ID, $obj2->ID);
$this->assertEquals(2, $obj1->Version);
$this->assertEquals(1, $obj2->Version);
}
