diff --git a/test/fixtures/types/code-sample-definitions.ts b/test/fixtures/types/code-sample-definitions.ts
index 7be992d..ca3ac30 100644
--- a/test/fixtures/types/code-sample-definitions.ts
+++ b/test/fixtures/types/code-sample-definitions.ts
@@ -65,4 +65,15 @@ export default [
       },
     },
   },
+  {
+    title: 'Deprecated and undocumented endpoint',
+    description: 'This is a deprecated and undocumented endpoint',
+    request: {
+      path: '/deprecated/undocumented/endpoint',
+      parameters: {},
+    },
+    response: {
+      body: {},
+    },
+  },
 ]
diff --git a/test/fixtures/types/openapi.ts b/test/fixtures/types/openapi.ts
index ba90e1e..ef30095 100644
--- a/test/fixtures/types/openapi.ts
+++ b/test/fixtures/types/openapi.ts
@@ -218,5 +218,32 @@ export default {
         'x-title': 'List planes',
       },
     },
+    '/deprecated/undocumented/endpoint': {
+      get: {
+        operationId: 'deprecatedUndocumentedEndpointGet',
+        deprecated: true,
+        responses: {
+          200: {
+            content: {
+              'application/json': {
+                schema: {
+                  properties: {
+                    ok: { type: 'boolean' },
+                  },
+                  required: ['ok'],
+                  type: 'object',
+                },
+              },
+            },
+            description: 'Deprecated and undocumented endpoint',
+          },
+        },
+        security: [],
+        summary: '/deprecated/undocumented/endpoint',
+        tags: ['/deprecated/undocumented'],
+        'x-undocumented': 'true',
+        'x-title': 'Deprecated and undocumented endpoint',
+      },
+    },
   },
 }
diff --git a/test/fixtures/types/route-specs.ts b/test/fixtures/types/route-specs.ts
index 4bbbaaa..91a1e5f 100644
--- a/test/fixtures/types/route-specs.ts
+++ b/test/fixtures/types/route-specs.ts
@@ -23,5 +23,10 @@ export const routes = {
         planes: z.array(schemas.plane),
       }),
     },
+    '/deprecated/undocumented/endpoint': {
+      auth: 'none',
+      methods: ['GET'],
+      jsonResponse: z.object({}),
+    },
   },
 } as const
diff --git a/test/fixtures/types/route-types.ts b/test/fixtures/types/route-types.ts
index 707e5a9..43e6fe5 100644
--- a/test/fixtures/types/route-types.ts
+++ b/test/fixtures/types/route-types.ts
@@ -53,6 +53,15 @@ export interface Routes {
       }
     }
   }
+  '/deprecated/undocumented/endpoint': {
+    route: '/deprecated/undocumented/endpoint'
+    method: 'GET'
+    queryParams: Record<string, unknown>
+    jsonBody: Record<string, unknown>
+    commonParams: Record<string, unknown>
+    formData: Record<string, unknown>
+    jsonResponse: {}
+  }
 }
 
 export type RouteResponse<Path extends keyof Routes> =