public function testCreateGroup()
{
$createStruct = new GroupCreateStruct();
$mapperMock = $this->getMapperMock();
$mapperMock->expects($this->once())->method('createGroupFromCreateStruct')->with($this->isInstanceOf('eZ\\Publish\\SPI\\Persistence\\Content\\Type\\Group\\CreateStruct'))->will($this->returnValue(new Group()));
$gatewayMock = $this->getGatewayMock();
$gatewayMock->expects($this->once())->method('insertGroup')->with($this->isInstanceOf('eZ\\Publish\\SPI\\Persistence\\Content\\Type\\Group'))->will($this->returnValue(23));
$handler = $this->getHandler();
$group = $handler->createGroup(new GroupCreateStruct());
$this->assertInstanceOf('eZ\\Publish\\SPI\\Persistence\\Content\\Type\\Group', $group);
$this->assertEquals(23, $group->id);
}