7 - Add CrawlOutcomeEnum for crawl attempt outcomes

app/Enums/CrawlOutcomeEnum.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Enums;
+
+enum CrawlOutcomeEnum: string
+{
+    case Success = 'success';
+    case Failed = 'failed';
+    case Timeout = 'timeout';
+    case BlockedRobots = 'blocked_robots';
+    case Blocked4xx = 'blocked_4xx';
+    case Blocked5xx = 'blocked_5xx';
+}

tests/Unit/Enums/CrawlOutcomeEnumTest.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Unit\Enums;
+
+use App\Enums\CrawlOutcomeEnum;
+use Tests\TestCase;
+
+class CrawlOutcomeEnumTest extends TestCase
+{
+    public function test_all_expected_cases_exist_with_correct_backing_values(): void
+    {
+        $expected = [
+            'Success' => 'success',
+            'Failed' => 'failed',
+            'Timeout' => 'timeout',
+            'BlockedRobots' => 'blocked_robots',
+            'Blocked4xx' => 'blocked_4xx',
+            'Blocked5xx' => 'blocked_5xx',
+        ];
+
+        foreach ($expected as $caseName => $backingValue) {
+            $case = CrawlOutcomeEnum::from($backingValue);
+
+            $this->assertSame($caseName, $case->name, "Case name for '{$backingValue}' should be '{$caseName}'");
+            $this->assertSame($backingValue, $case->value, "Backing value for '{$caseName}' should be '{$backingValue}'");
+        }
+    }
+
+    public function test_enum_has_exactly_six_cases(): void
+    {
+        $this->assertCount(6, CrawlOutcomeEnum::cases());
+    }
+}