Fix flaking TestStoreListResourceVersion

Author: mauri870

staging/src/k8s.io/apiserver/pkg/registry/generic/registry/store_test.go

@@ -2446,6 +2446,14 @@ func newTestGenericStoreRegistry(t *testing.T, scheme *runtime.Scheme, hasCacheE
 		if err != nil {
 			t.Fatalf("Couldn't create cacher: %v", err)
 		}
+		if utilfeature.DefaultFeatureGate.Enabled(features.ResilientWatchCacheInitialization) {
+			// The tests assume that Get/GetList/Watch calls shouldn't fail.
+			// However, 429 error can now be returned if watchcache is under initialization.
+			// To avoid rewriting all tests, we wait for watchcache to initialize.
+			if err := cacher.Wait(context.Background()); err != nil {
+				t.Fatal(err)
+			}
+		}
 		d := destroyFunc
 		s = cacher
 		destroyFunc = func() {

staging/src/k8s.io/apiserver/pkg/storage/cacher/cacher.go

@@ -1358,6 +1358,11 @@ func (c *Cacher) waitUntilWatchCacheFreshAndForceAllEvents(ctx context.Context,
 	return nil
 }
 
+// Wait blocks until the cacher is Ready or Stopped, it returns an error if Stopped.
+func (c *Cacher) Wait(ctx context.Context) error {
+	return c.ready.wait(ctx)
+}
+
 // errWatcher implements watch.Interface to return a single error
 type errWatcher struct {
 	result chan watch.Event

staging/src/k8s.io/apiserver/pkg/storage/cacher/cacher_test.go

@@ -472,8 +472,8 @@ func testSetupWithEtcdServer(t *testing.T, opts ...setupOption) (context.Context
 	if utilfeature.DefaultFeatureGate.Enabled(features.ResilientWatchCacheInitialization) {
 		// The tests assume that Get/GetList/Watch calls shouldn't fail.
 		// However, 429 error can now be returned if watchcache is under initialization.
-		// To avoid rewriting all tests, we wait for watcache to initialize.
-		if err := cacher.ready.wait(ctx); err != nil {
+		// To avoid rewriting all tests, we wait for watchcache to initialize.
+		if err := cacher.Wait(ctx); err != nil {
 			t.Fatal(err)
 		}
 	}

staging/src/k8s.io/apiserver/pkg/storage/cacher/cacher_whitebox_test.go

@@ -93,7 +93,7 @@ func newTestCacher(s storage.Interface) (*Cacher, storage.Versioner, error) {
 		// The tests assume that Get/GetList/Watch calls shouldn't fail.
 		// However, 429 error can now be returned if watchcache is under initialization.
 		// To avoid rewriting all tests, we wait for watcache to initialize.
-		if err := cacher.ready.wait(context.Background()); err != nil {
+		if err := cacher.Wait(context.Background()); err != nil {
 			return nil, storage.APIObjectVersioner{}, err
 		}
 	}