From 7d4de590e5b0c72ae2c77c2fa4f3ced8e6a5ac9e Mon Sep 17 00:00:00 2001
From: Alejandro Celaya <alejandro@alejandrocelaya.com>
Date: Fri, 22 Feb 2019 19:53:10 +0100
Subject: [PATCH] Created ImplicitLoopPaginatorTest

---
 .../PaginableRepositoryAdapterTest.php        |  2 +-
 .../Paginator/ImplicitLoopPaginatorTest.php   | 65 +++++++++++++++++++
 2 files changed, 66 insertions(+), 1 deletion(-)
 rename module/Common/test/Paginator/{ => Adapter}/PaginableRepositoryAdapterTest.php (95%)
 create mode 100644 module/Common/test/Paginator/ImplicitLoopPaginatorTest.php

diff --git a/module/Common/test/Paginator/PaginableRepositoryAdapterTest.php b/module/Common/test/Paginator/Adapter/PaginableRepositoryAdapterTest.php
similarity index 95%
rename from module/Common/test/Paginator/PaginableRepositoryAdapterTest.php
rename to module/Common/test/Paginator/Adapter/PaginableRepositoryAdapterTest.php
index 4e63ba78..4f5afb23 100644
--- a/module/Common/test/Paginator/PaginableRepositoryAdapterTest.php
+++ b/module/Common/test/Paginator/Adapter/PaginableRepositoryAdapterTest.php
@@ -1,7 +1,7 @@
 <?php
 declare(strict_types=1);
 
-namespace ShlinkioTest\Shlink\Common\Paginator;
+namespace ShlinkioTest\Shlink\Common\Paginator\Adapter;
 
 use PHPUnit\Framework\TestCase;
 use Prophecy\Prophecy\ObjectProphecy;
diff --git a/module/Common/test/Paginator/ImplicitLoopPaginatorTest.php b/module/Common/test/Paginator/ImplicitLoopPaginatorTest.php
new file mode 100644
index 00000000..0e494afb
--- /dev/null
+++ b/module/Common/test/Paginator/ImplicitLoopPaginatorTest.php
@@ -0,0 +1,65 @@
+<?php
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Common\Paginator;
+
+use PHPUnit\Framework\TestCase;
+use Shlinkio\Shlink\Common\Paginator\ImplicitLoopPaginator;
+use Zend\Paginator\Adapter\ArrayAdapter;
+use Zend\Paginator\Paginator;
+use function Functional\map;
+use function range;
+
+class ImplicitLoopPaginatorTest extends TestCase
+{
+    private const TOTAL_ITEMS = 10;
+
+    /** @var Paginator */
+    private $paginator;
+
+    protected function setUp(): void
+    {
+        $this->paginator = new Paginator(new ArrayAdapter(range(1, self::TOTAL_ITEMS)));
+    }
+
+    /**
+     * @test
+     * @dataProvider provideItemsPerPage
+     */
+    public function allElementsAreIteratedRegardlessThePageSize(int $itemsPerPage): void
+    {
+        $this->paginator->setItemCountPerPage($itemsPerPage);
+        $implicitLoopPaginator = new ImplicitLoopPaginator($this->paginator);
+
+        $iteratedItems = 0;
+        foreach ($implicitLoopPaginator as $item) {
+            $iteratedItems++;
+        }
+
+        $this->assertEquals(self::TOTAL_ITEMS, $iteratedItems);
+    }
+
+    public function provideItemsPerPage(): iterable
+    {
+        return map(range(1, 20), function (int $i) {
+            return [$i];
+        });
+    }
+
+    /** @test */
+    public function valuesWrappedInPaginatorAreProperlyParsed(): void
+    {
+        $valueParser = function (int $item) {
+            return $item * 3;
+        };
+        $this->paginator->setItemCountPerPage(5);
+        $implicitLoopPaginator = new ImplicitLoopPaginator($this->paginator, $valueParser);
+
+        $items = [];
+        foreach ($implicitLoopPaginator as $item) {
+            $items[] = $item;
+        }
+
+        $this->assertEquals([3, 6, 9, 12, 15, 18, 21, 24, 27, 30], $items);
+    }
+}