construct resource.Builder from kubeconfig flags

Kubernetes-commit: 1f5357034b4a8ef4ed68f0c2415e280601968e91

restmapper/category_expansion.go

@@ -48,11 +48,11 @@ type discoveryCategoryExpander struct {
 // NewDiscoveryCategoryExpander returns a category expander that makes use of the "categories" fields from
 // the API, found through the discovery client. In case of any error or no category found (which likely
 // means we're at a cluster prior to categories support, fallback to the expander provided.
-func NewDiscoveryCategoryExpander(client discovery.DiscoveryInterface) (CategoryExpander, error) {
+func NewDiscoveryCategoryExpander(client discovery.DiscoveryInterface) CategoryExpander {
 	if client == nil {
 		panic("Please provide discovery client to shortcut expander")
 	}
-	return discoveryCategoryExpander{discoveryClient: client}, nil
+	return discoveryCategoryExpander{discoveryClient: client}
 }
 
 // Expand fulfills CategoryExpander

restmapper/category_expansion_test.go

@@ -135,10 +135,7 @@ func TestDiscoveryCategoryExpander(t *testing.T) {
 		dc.serverResourcesHandler = func() ([]*metav1.APIResourceList, error) {
 			return test.serverResponse, nil
 		}
-		expander, err := NewDiscoveryCategoryExpander(dc)
-		if err != nil {
-			t.Fatalf("unexpected error %v", err)
-		}
+		expander := NewDiscoveryCategoryExpander(dc)
 		expanded, _ := expander.Expand(test.category)
 		if !reflect.DeepEqual(expanded, test.expected) {
 			t.Errorf("expected %v, got %v", test.expected, expanded)