public function testSingleScope()
{
$memArray = new Matryoshka\Ephemeral();
$scope = new Matryoshka\Scope($memArray, 'scope');
$multiScope = new Matryoshka\MultiScope($memArray, [$scope]);
// The MultiScope key should be the same as the sole scope that it
// contains.
$this->assertSame($scope->changeKey('key'), $multiScope->changeKey('key'));
}
