1 files changed, 39 insertions, 0 deletions
diff --git a/test/cors.test.ts b/test/cors.test.ts
new file mode 100644
index 0000000..621c263
--- /dev/null
+++ b/test/cors.test.ts
@@ -0,0 +1,39 @@
+import { describe, expect, it } from 'vitest';
+
+import { PosthookServer } from '../src/server/index.js';
+
+const corsHeaders = (corsOriginsRaw: string, origin: string | undefined) => {
+    const server = new PosthookServer({} as any, {} as any, corsOriginsRaw);
+    return (server as any).corsHeaders(origin) as Record<string, string>;
+};
+
+describe('CORS origin matching', () => {
+    it('defaults to allow-all with *', () => {
+        expect(corsHeaders('*', 'http://localhost:8080')).toEqual({
+            'Access-Control-Allow-Origin': '*',
+        });
+    });
+
+    it('supports apex and wildcard host matching over https', () => {
+        expect(corsHeaders('*.liz.coffee,liz.coffee', 'https://liz.coffee')).toEqual({
+            'Access-Control-Allow-Origin': 'https://liz.coffee',
+        });
+
+        expect(corsHeaders('*.liz.coffee,liz.coffee', 'https://beta.posthook.liz.coffee')).toEqual({
+            'Access-Control-Allow-Origin': 'https://beta.posthook.liz.coffee',
+        });
+
+        expect(corsHeaders('*.liz.coffee,liz.coffee', 'https://evil.com')).toEqual({});
+    });
+
+    it('rejects http origins when restricted', () => {
+        expect(corsHeaders('*.liz.coffee,liz.coffee', 'http://liz.coffee')).toEqual({});
+    });
+
+    it('does not match apex with wildcard alone', () => {
+        expect(corsHeaders('*.liz.coffee', 'https://liz.coffee')).toEqual({});
+        expect(corsHeaders('*.liz.coffee', 'https://a.liz.coffee')).toMatchObject({
+            'Access-Control-Allow-Origin': 'https://a.liz.coffee',
+        });
+    });
+});