Centralized how routes are configured to support multi-segment slugs

module/Core/test/Config/MultiSegmentSlugProcessorTest.php

@@ -0,0 +1,60 @@
+<?php
+
+declare(strict_types=1);
+
+namespace ShlinkioTest\Shlink\Core\Config;
+
+use PHPUnit\Framework\TestCase;
+use Shlinkio\Shlink\Core\Config\MultiSegmentSlugProcessor;
+
+class MultiSegmentSlugProcessorTest extends TestCase
+{
+    private MultiSegmentSlugProcessor $processor;
+
+    protected function setUp(): void
+    {
+        $this->processor = new MultiSegmentSlugProcessor();
+    }
+
+    /**
+     * @test
+     * @dataProvider provideConfigs
+     */
+    public function parsesRoutesAsExpected(array $config, array $expectedRoutes): void
+    {
+        self::assertEquals($expectedRoutes, ($this->processor)($config)['routes'] ?? []);
+    }
+
+    public function provideConfigs(): iterable
+    {
+        yield [[], []];
+        yield [['url_shortener' => []], []];
+        yield [['url_shortener' => ['multi_segment_slugs_enabled' => false]], []];
+        yield [
+            [
+                'url_shortener' => ['multi_segment_slugs_enabled' => false],
+                'routes' => $routes = [
+                    ['path' => '/foo'],
+                    ['path' => '/bar/{shortCode}'],
+                    ['path' => '/baz/{shortCode}/foo'],
+                ],
+            ],
+            $routes,
+        ];
+        yield [
+            [
+                'url_shortener' => ['multi_segment_slugs_enabled' => true],
+                'routes' => [
+                    ['path' => '/foo'],
+                    ['path' => '/bar/{shortCode}'],
+                    ['path' => '/baz/{shortCode}/foo'],
+                ],
+            ],
+            [
+                ['path' => '/foo'],
+                ['path' => '/bar/{shortCode:.+}'],
+                ['path' => '/baz/{shortCode:.+}/foo'],
+            ],
+        ];
+    }
+}