From 114d4e09cca1461ff4e227aef9b3db2449b088a0 Mon Sep 17 00:00:00 2001
From: Thomas Hedemann Hansen <thomas85hansen@gmail.com>
Date: Mon, 7 Mar 2022 13:22:17 +0100
Subject: [PATCH] fix: add test where `types` is undefined

---
 .../typed-headers.decorator.spec.ts           | 24 +++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/src/decorators/typed-headers.decorator.spec.ts b/src/decorators/typed-headers.decorator.spec.ts
index fe308e9..e770614 100644
--- a/src/decorators/typed-headers.decorator.spec.ts
+++ b/src/decorators/typed-headers.decorator.spec.ts
@@ -27,10 +27,7 @@ export class TestHeaders {
 @Controller({ path: 'test', version: '1' })
 export class TestController {
   @Get()
-  async test(
-    // @Headers() @HeaderSchema(TransactionHeaders) headers: TransactionHeaders,
-    @TypedHeaders() headers: TestHeaders
-  ): Promise<string> {
+  async test(@TypedHeaders() headers: TestHeaders): Promise<string> {
     return headers.countryCode;
   }
 }
@@ -75,4 +72,23 @@ describe('TypedHeaders decorator', () => {
         error: 'Bad Request',
       });
   });
+
+  it('fails when emitDecoratorMetadata is disabled', async () => {
+    expect(() => {
+      jest.spyOn(Reflect, 'getOwnMetadata').mockReturnValue(undefined);
+
+      @Controller({ path: 'test', version: '1' })
+      // eslint-disable-next-line @typescript-eslint/no-unused-vars
+      class TestControllerWithoutEmitDecoratorMetadata {
+        @Get()
+        async test(@TypedHeaders() headers: TestHeaders): Promise<string> {
+          return headers.countryCode;
+        }
+      }
+    }).toThrow(
+      new Error(
+        'Type metadata not found. See https://www.typescriptlang.org/docs/handbook/decorators.html#metadata'
+      )
+    );
+  });
 });