Moved global functions to handle array paths to a wrapper class

module/Common/test/Collection/PathCollectionTest.php

@@ -0,0 +1,82 @@
+<?php
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Common\Collection;
+
+use PHPUnit\Framework\TestCase;
+use Shlinkio\Shlink\Common\Collection\PathCollection;
+
+class PathCollectionTest extends TestCase
+{
+    /**
+     * @var PathCollection
+     */
+    private $collection;
+
+    public function setUp()
+    {
+        $this->collection = new PathCollection([
+            'foo' => [
+                'bar' => [
+                    'baz' => 'Hello world!',
+                ],
+            ],
+            'something' => [],
+            'another' => [
+                'one' => 'Shlink',
+            ],
+        ]);
+    }
+
+    /**
+     * @test
+     * @dataProvider providePaths
+     */
+    public function pathExistsReturnsExpectedValue(array $path, bool $expected)
+    {
+        $this->assertEquals($expected, $this->collection->pathExists($path));
+    }
+
+    public function providePaths(): array
+    {
+        return [
+            [[], false],
+            [['boo'], false],
+            [['foo', 'nop'], false],
+            [['another', 'one', 'nop'], false],
+            [['foo'], true],
+            [['foo', 'bar'], true],
+            [['foo', 'bar', 'baz'], true],
+            [['something'], true],
+        ];
+    }
+
+    /**
+     * @test
+     * @dataProvider providePathsWithValue
+     */
+    public function getValueInPathReturnsExpectedValue(array $path, $expected)
+    {
+        $this->assertEquals($expected, $this->collection->getValueInPath($path));
+    }
+
+    public function providePathsWithValue(): array
+    {
+        return [
+            [[], null],
+            [['boo'], null],
+            [['foo', 'nop'], null],
+            [['another', 'one', 'nop'], null],
+            [['foo'], [
+                'bar' => [
+                    'baz' => 'Hello world!',
+                ],
+            ]],
+            [['foo', 'bar'], [
+                'baz' => 'Hello world!',
+            ]],
+            [['foo', 'bar', 'baz'], 'Hello world!'],
+            [['something'], []],
+        ];
+    }
+}