public function testLoadNextBuys()
{
/** @var \PHPUnit_Framework_MockObject_MockObject|ResourceCollection $buys */
$buys = $this->getMock(ResourceCollection::class);
$response = $this->getMock(ResponseInterface::class);
$nextPage = new ResourceCollection();
$buys->expects($this->any())->method('getNextUri')->willReturn('/test/next/uri');
$this->http->expects($this->any())->method('get')->with('/test/next/uri', ['foo' => 'bar'])->willReturn($response);
$this->mapper->expects($this->any())->method('toBuys')->willReturn($nextPage);
$buys->expects($this->once())->method('mergeNextPage')->with($nextPage);
$this->client->loadNextBuys($buys, ['foo' => 'bar']);
}