Update kep for beta graduation in 1.25

Author: kevindelgado

keps/sig-api-machinery/2885-server-side-unknown-field-validation/README.md

@@ -570,17 +570,35 @@ when drafting this test plan.
 
 [testing-guidelines]: https://git.k8s.io/community/contributors/devel/sig-testing/testing.md
 -->
-We can unit test and benchmark the performance of each endpoint in
-[apiserver/pkg/endpoints/apiserver_test.go](https://github.com/kubernetes/kubernetes/blob/dadecb2c8932fd28de9dfb94edbc7bdac7d0d28f/staging/src/k8s.io/apiserver/pkg/endpoints/apiserver_test.go). We will need to test that requests
-fail with invalid fields for all types of fields (embedding, free-form fields,
-etc).
+##### Unit tests
+[alpha and beta]
+Logic that is changed in the apiextensions schema package (i.e. objectmeta
+algorithm and pruning algorithm) will be thoroughly unit tested as well as
+changes made to the
+apimachinery runtime converter and json decoding.
 
-Additionally, we can add integration testing for all endpoints in
-[test/integration/apiserver/apiserver_test.go](https://github.com/kubernetes/kubernetes/blob/master/test/integration/apiserver/apiserver_test.go)
+Additional testing has also been added to the
+[apiserver/endpoints/handlers/rest_test.go](https://github.com/kubernetes/kubernetes/blob/master/staging/src/k8s.io/apiserver/pkg/endpoints/handlers/rest_test.go) to detect unknown and duplicate fields.
 
-We will also have additional testing for changes to the strategic merge patch
-logic in
-[apimachinery/pkg/util/strategicpatch/patch_test.go](https://github.com/kubernetes/kubernetes/blob/dadecb2c8932fd28de9dfb94edbc7bdac7d0d28f/staging/src/k8s.io/apimachinery/pkg/util/strategicpatch/patch_test.go)
+##### Integration tests
+[alpha and beta]
+Primarily, server side validation will be integration tested and benchmarked via a complete test
+suite at
+[test/integration/apiserver/field_validation_test.go](https://github.com/kubernetes/kubernetes/blob/master/test/integration/apiserver/field_validation_test.go)
+
+It tests the cross product of all valid permutations along the dimensions of:
+* request type (Create vs Update vs Patch)
+* data format (json, yaml, json patch, json merge patch, SMP patch, apply
+  (create), apply (update))
+* schema type (typed/builtin, CRD/untyped with schema, CRD/untyped without
+  schema)
+
+
+
+##### e2e tests
+[beta]
+With field validation on by default in beta, we will modify
+[test/e2e/kubectl/kubectl.go](https://github.com/kubernetes/kubernetes/blob/master/test/e2e/kubectl/kubectl.go) to ensure that kubectl defaults to using server side field validation and detects unknown/duplicate fields as expected.
 
 ### Graduation Criteria
 <!--
@@ -616,12 +634,16 @@ Below are some examples to consider, in addition to the aforementioned [maturity
 
 #### Beta
 
-- [ ] kubectl validate flag offers ability to perform server-side validation
-- [ ] endpoints handler unit testing of field validation
-- [ ] customresource handler unit testing of field validation
-- [ ] field validation integration tests check for exact match of strict errors
-- [ ] In tree NestedObjectDecoders no longer short circuit on strict decoding
+- [x] kubectl validate flag offers ability to perform server-side validation
+- [x] endpoints handler unit testing of field validation
+- [x] customresource handler unit testing of field validation
+- [x] field validation integration tests check for exact match of strict errors
+- [x] In tree NestedObjectDecoders no longer short circuit on strict decoding
   errors [#107545](https://github.com/kubernetes/kubernetes/issues/107545)
+- [ ] Unknown/Duplicate fields are properly detected in the metadata at both the
+  root level and within embedded objects
+  [#109215](https://github.com/kubernetes/kubernetes/issues/109215),[#109316](https://github.com/kubernetes/kubernetes/pull/109316), and
+  [#109494](https://github.com/kubernetes/kubernetes/pull/109494)
 
 
 <!--

keps/sig-api-machinery/2885-server-side-unknown-field-validation/kep.yaml

@@ -12,6 +12,7 @@ reviewers:
   - "@smarterclayton"
 approvers:
   - "@deads2k"
+  - "@liggitt"
 
 ##### WARNING !!! ######
 # prr-approvers has been moved to its own location
@@ -29,13 +30,13 @@ stage: beta
 # The most recent milestone for which work toward delivery of this KEP has been
 # done. This can be the current (upcoming) milestone, if it is being actively
 # worked on.
-latest-milestone: "v1.24"
+latest-milestone: "v1.25"
 
 # The milestone at which this feature was, or is targeted to be, at each stage.
 milestone:
   alpha: "v1.23"
-  beta: "v1.24"
-  stable: "v1.25"
+  beta: "v1.25"
+  stable: "v1.26"
 
 # The following PRR answers are required at alpha release
 # List the feature gate name and the components for which it must be enabled