func TestKnownVersions(t *testing.T) {
	legacytypes := legacyscheme.Scheme.AllKnownTypes()
	alreadyErroredGroups := map[string]bool{}
	var gvks []schema.GroupVersionKind
	for gvk := range scheme.Scheme.AllKnownTypes() {
		gvks = append(gvks, gvk)
	}
	sort.Slice(gvks, func(i, j int) bool {
		if isWatchEvent1, isWatchEvent2 := gvks[i].Kind == "WatchEvent", gvks[j].Kind == "WatchEvent"; isWatchEvent1 != isWatchEvent2 {
			return isWatchEvent2
		}
		if isList1, isList2 := strings.HasSuffix(gvks[i].Kind, "List"), strings.HasSuffix(gvks[j].Kind, "List"); isList1 != isList2 {
			return isList2
		}
		if isOptions1, isOptions2 := strings.HasSuffix(gvks[i].Kind, "Options"), strings.HasSuffix(gvks[j].Kind, "Options"); isOptions1 != isOptions2 {
			return isOptions2
		}
		if isInternal1, isInternal2 := gvks[i].Group == runtime.APIVersionInternal, gvks[j].Group == runtime.APIVersionInternal; isInternal1 != isInternal2 {
			return isInternal2
		}
		return gvks[i].String() < gvks[j].String()
	})
	for _, gvk := range gvks {
		if alreadyErroredGroups[gvk.Group] {
			continue
		}
		if _, legacyregistered := legacytypes[gvk]; !legacyregistered {
			t.Errorf("%v is not registered in legacyscheme. Add group %q (all internal and external versions) to convert/import_known_versions.go", gvk, gvk.Group)
			alreadyErroredGroups[gvk.Group] = true
		}
	}
}