From ac8ee77a8fcf76d4c80113ff8fce2cf3e1e08f94 Mon Sep 17 00:00:00 2001
From: Ed Pelc <ed@freightchick.com>
Date: Thu, 7 Sep 2023 16:59:55 -0400
Subject: [PATCH] Add explicit ClaimsValidator implementation check for custom
 claims

Prevent user from misnaming or fat fingering the Validate() method implementation.
---
 example_test.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/example_test.go b/example_test.go
index 0df31244..4923d513 100644
--- a/example_test.go
+++ b/example_test.go
@@ -124,6 +124,9 @@ type MyCustomClaims struct {
 	jwt.RegisteredClaims
 }
 
+// Ensure we implement [jwt.ClaimsValidator] at compile time so we know our custom Validate method is used.
+var _ jwt.ClaimsValidator = MyCustomClaims{}
+
 // Validate can be used to execute additional application-specific claims
 // validation.
 func (m MyCustomClaims) Validate() error {