PlatformOrder: add orderTypeLabel helper

tests/Unit/PlatformOrderOrderTypeLabelTest.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Tests\Unit;
+
+use App\Models\PlatformOrder;
+use Tests\TestCase;
+
+class PlatformOrderOrderTypeLabelTest extends TestCase
+{
+    public function test_order_type_label_should_map_known_types(): void
+    {
+        $o = new PlatformOrder();
+
+        $o->order_type = 'new_purchase';
+        $this->assertSame('新购', $o->orderTypeLabel());
+
+        $o->order_type = 'renewal';
+        $this->assertSame('续费', $o->orderTypeLabel());
+
+        $o->order_type = 'upgrade';
+        $this->assertSame('升级', $o->orderTypeLabel());
+
+        $o->order_type = 'downgrade';
+        $this->assertSame('降级', $o->orderTypeLabel());
+    }
+
+    public function test_order_type_label_should_fallback_to_code_when_unknown(): void
+    {
+        $o = new PlatformOrder();
+        $o->order_type = 'something_new';
+
+        $this->assertSame('something_new', $o->orderTypeLabel());
+    }
+}