From d05fc30568d6c8f2d3ca0c4e38721bd88453756f Mon Sep 17 00:00:00 2001
From: Ville Aikas <vaikas@vmware.com>
Date: Fri, 5 Feb 2021 17:10:25 +0200
Subject: [PATCH] ut are actually kind of cool... fix the brokenness

---
 pkg/apis/eventing/v1beta1/trigger_validation.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkg/apis/eventing/v1beta1/trigger_validation.go b/pkg/apis/eventing/v1beta1/trigger_validation.go
index b29e87014fc..c2a9f4a381e 100644
--- a/pkg/apis/eventing/v1beta1/trigger_validation.go
+++ b/pkg/apis/eventing/v1beta1/trigger_validation.go
@@ -38,6 +38,10 @@ func (t *Trigger) Validate(ctx context.Context) *apis.FieldError {
 	errs := t.Spec.Validate(ctx).ViaField("spec")
 	errs = t.validateAnnotation(errs, DependencyAnnotation, t.validateDependencyAnnotation)
 	errs = t.validateAnnotation(errs, InjectionAnnotation, t.validateInjectionAnnotation)
+	if apis.IsInUpdate(ctx) {
+		original := apis.GetBaseline(ctx).(*Trigger)
+		errs = errs.Also(t.CheckImmutableFields(ctx, original))
+	}
 	return errs
 }