public function testPaginator()
{
$paginator = new Paginator(['a', 'b', 'c', 'd'], 2);
$this->assertEquals(2, $paginator->getTotalPages());
$this->assertEquals(4, $paginator->getTotalItems());
$this->assertEquals(2, $paginator->getItemsPerPage());
$this->assertEquals(1, $paginator->getCurrentPage());
$this->assertEquals('a', $paginator->getItem());
$this->assertCount(2, $paginator->getItemsCurrentPage());
$this->assertTrue($paginator->pageChanged());
$this->assertEquals(2, $paginator->getNextPage());
$this->assertFalse($paginator->getPreviousPage());
$existsMore = $paginator->nextItem();
$this->assertTrue($existsMore);
$this->assertEquals(1, $paginator->getCurrentPage());
$this->assertEquals('b', $paginator->getItem());
$this->assertFalse($paginator->pageChanged());
$this->assertEquals(2, $paginator->getNextPage());
$this->assertFalse($paginator->getPreviousPage());
$existsMore = $paginator->nextItem();
$this->assertTrue($existsMore);
$this->assertCount(2, $paginator->getItemsCurrentPage());
$this->assertEquals(2, $paginator->getCurrentPage());
$this->assertEquals('c', $paginator->getItem());
$this->assertTrue($paginator->pageChanged());
$this->assertFalse($paginator->getNextPage());
$this->assertEquals(1, $paginator->getPreviousPage());
$existsMore = $paginator->nextItem();
$this->assertTrue($existsMore);
$this->assertEquals(2, $paginator->getCurrentPage());
$this->assertEquals('d', $paginator->getItem());
$this->assertFalse($paginator->pageChanged());
$this->assertFalse($paginator->getNextPage());
$this->assertEquals(1, $paginator->getPreviousPage());
$existsMore = $paginator->nextItem();
$this->assertFalse($existsMore);
$this->assertEquals(2, $paginator->getCurrentPage());
$this->assertFalse($paginator->getNextPage());
}
private function getPaginatorPayload(Paginator $paginator)
{
$result = [];
$result['per_page'] = $paginator->getItemsPerPage();
$result['posts'] = $paginator->getItemsCurrentPage();
$result['total_posts'] = $paginator->getTotalItems();
$result['total_pages'] = $paginator->getTotalPages();
$result['page'] = $paginator->getCurrentPage();
$result['previous_page'] = $paginator->getPreviousPage();
$result['previous_page_path'] = $this->getPageRelativePath($result['previous_page']);
$result['next_page'] = $paginator->getNextPage();
$result['next_page_path'] = $this->getPageRelativePath($result['next_page']);
return $result;
}