package auth

import (
	"context"
	"testing"
)

func TestUserIDKey(t *testing.T) {
	// Test that the UserIDKey constant is defined correctly
	if UserIDKey != "user_id" {
		t.Errorf("UserIDKey = %v, want %v", UserIDKey, "user_id")
	}

	// Test context with user ID
	ctx := context.WithValue(context.Background(), UserIDKey, "test-user-123")
	value := ctx.Value(UserIDKey)
	if value != "test-user-123" {
		t.Errorf("Context value = %v, want %v", value, "test-user-123")
	}

	// Test context without user ID
	emptyCtx := context.Background()
	emptyValue := emptyCtx.Value(UserIDKey)
	if emptyValue != nil {
		t.Errorf("Empty context value = %v, want nil", emptyValue)
	}
}