Remove the wrappy layer.

api/internal/target/multitransformer.go

@@ -37,22 +37,10 @@ func (o *multiTransformer) Transform(m resmap.ResMap) error {
 
 func (o *multiTransformer) transform(m resmap.ResMap) error {
 	for _, t := range o.transformers {
-		err := t.Transform(m)
-		if err != nil {
+		if err := t.Transform(m); err != nil {
 			return err
 		}
-	}
-	for _, r := range m.Resources() {
-		empty, err := r.IsEmpty()
-		if err != nil {
-			return err
-		}
-		if empty {
-			err := m.Remove(r.CurId())
-			if err != nil {
-				return err
-			}
-		}
+		m.DropEmpties()
 	}
 	return nil
 }

api/internal/wrappy/factory.go

@@ -1,108 +0,0 @@
-// Copyright 2020 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-package wrappy
-
-import (
-	"fmt"
-
-	"sigs.k8s.io/kustomize/api/hasher"
-	"sigs.k8s.io/kustomize/api/ifc"
-	"sigs.k8s.io/kustomize/api/internal/generators"
-	"sigs.k8s.io/kustomize/api/konfig"
-	"sigs.k8s.io/kustomize/api/types"
-	"sigs.k8s.io/kustomize/kyaml/filtersutil"
-	"sigs.k8s.io/kustomize/kyaml/kio"
-	"sigs.k8s.io/kustomize/kyaml/yaml"
-)
-
-// WNodeFactory makes instances of WNode.
-//
-// These instances in turn adapt
-//   sigs.k8s.io/kustomize/kyaml/yaml.RNode
-// to implement ifc.Unstructured.
-// This factory is meant to implement ifc.KunstructuredFactory.
-//
-// This implementation should be thin, as both WNode and WNodeFactory must be
-// factored away (deleted) along with ifc.Kunstructured in favor of direct use
-// of RNode methods upon completion of
-// https://github.com/kubernetes-sigs/kustomize/issues/2506.
-//
-// See also api/krusty/internal/provider/depprovider.go
-type WNodeFactory struct {
-}
-
-var _ ifc.KunstructuredFactory = (*WNodeFactory)(nil)
-
-func (k *WNodeFactory) SliceFromBytes(bs []byte) ([]ifc.Kunstructured, error) {
-	yamlRNodes, err := kio.FromBytes(bs)
-	if err != nil {
-		return nil, err
-	}
-	var result []ifc.Kunstructured
-	for i := range yamlRNodes {
-		rn := yamlRNodes[i]
-		meta, err := rn.GetValidatedMetadata()
-		if err != nil {
-			return nil, err
-		}
-		if !shouldDropObject(meta) {
-			if foundNil, path := rn.HasNilEntryInList(); foundNil {
-				return nil, fmt.Errorf("empty item at %v in object %v", path, rn)
-			}
-			result = append(result, FromRNode(rn))
-		}
-	}
-	return result, nil
-}
-
-// shouldDropObject returns true if the resource should not be accumulated.
-func shouldDropObject(m yaml.ResourceMeta) bool {
-	_, y := m.ObjectMeta.Annotations[konfig.IgnoredByKustomizeAnnotation]
-	return y
-}
-
-func (k *WNodeFactory) FromMap(m map[string]interface{}) ifc.Kunstructured {
-	rn, err := FromMap(m)
-	if err != nil {
-		// TODO(#WNodeFactory): handle or bubble error"
-		panic(err)
-	}
-	return rn
-}
-
-// kustHash computes a hash of an unstructured object.
-type kustHash struct{}
-
-// Hash returns a hash of the given object
-func (h *kustHash) Hash(m ifc.Kunstructured) (string, error) {
-	node, err := filtersutil.GetRNode(m)
-	if err != nil {
-		return "", err
-	}
-	return hasher.HashRNode(node)
-}
-
-func (k *WNodeFactory) Hasher() ifc.KunstructuredHasher {
-	return &kustHash{}
-}
-
-// MakeConfigMap makes a wrapped configmap.
-func (k *WNodeFactory) MakeConfigMap(
-	ldr ifc.KvLoader, args *types.ConfigMapArgs) (ifc.Kunstructured, error) {
-	rn, err := generators.MakeConfigMap(ldr, args)
-	if err != nil {
-		return nil, err
-	}
-	return FromRNode(rn), nil
-}
-
-// MakeSecret makes a wrapped secret.
-func (k *WNodeFactory) MakeSecret(
-	ldr ifc.KvLoader, args *types.SecretArgs) (ifc.Kunstructured, error) {
-	rn, err := generators.MakeSecret(ldr, args)
-	if err != nil {
-		return nil, err
-	}
-	return FromRNode(rn), nil
-}

api/internal/wrappy/factory_test.go

@@ -1,324 +0,0 @@
-// Copyright 2020 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-package wrappy_test
-
-import (
-	"fmt"
-	"reflect"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	. "sigs.k8s.io/kustomize/api/internal/wrappy"
-)
-
-func TestHasher(t *testing.T) {
-	input := `
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: foo
-data:
-  one: ""
-binaryData:
-  two: ""
-`
-	expect := "698h7c7t9m"
-
-	factory := &WNodeFactory{}
-	k, err := factory.SliceFromBytes([]byte(input))
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	hasher := factory.Hasher()
-	result, err := hasher.Hash(k[0])
-	if err != nil {
-		t.Fatal(err)
-	}
-	if result != expect {
-		t.Fatalf("expect %s but got %s", expect, result)
-	}
-}
-
-func TestSliceFromBytes(t *testing.T) {
-	factory := &WNodeFactory{}
-	testConfigMap :=
-		map[string]interface{}{
-			"apiVersion": "v1",
-			"kind":       "ConfigMap",
-			"metadata": map[string]interface{}{
-				"name": "winnie",
-			},
-		}
-	testConfigMapList :=
-		map[string]interface{}{
-			"apiVersion": "v1",
-			"kind":       "ConfigMapList",
-			"items": []interface{}{
-				testConfigMap,
-				testConfigMap,
-			},
-		}
-	testDeploymentSpec := map[string]interface{}{
-		"template": map[string]interface{}{
-			"spec": map[string]interface{}{
-				"hostAliases": []interface{}{
-					map[string]interface{}{
-						"hostnames": []interface{}{
-							"a.example.com",
-						},
-						"ip": "8.8.8.8",
-					},
-				},
-			},
-		},
-	}
-	testDeploymentA := map[string]interface{}{
-		"apiVersion": "apps/v1",
-		"kind":       "Deployment",
-		"metadata": map[string]interface{}{
-			"name": "deployment-a",
-		},
-		"spec": testDeploymentSpec,
-	}
-	testDeploymentB := map[string]interface{}{
-		"apiVersion": "apps/v1",
-		"kind":       "Deployment",
-		"metadata": map[string]interface{}{
-			"name": "deployment-b",
-		},
-		"spec": testDeploymentSpec,
-	}
-	testDeploymentList :=
-		map[string]interface{}{
-			"apiVersion": "v1",
-			"kind":       "DeploymentList",
-			"items": []interface{}{
-				testDeploymentA,
-				testDeploymentB,
-			},
-		}
-
-	type expected struct {
-		out   []map[string]interface{}
-		isErr bool
-	}
-
-	testCases := map[string]struct {
-		input []byte
-		exp   expected
-	}{
-		"garbage": {
-			input: []byte("garbageIn: garbageOut"),
-			exp: expected{
-				isErr: true,
-			},
-		},
-		"noBytes": {
-			input: []byte{},
-			exp: expected{
-				out: []map[string]interface{}{},
-			},
-		},
-		"goodJson": {
-			input: []byte(`
-{"apiVersion":"v1","kind":"ConfigMap","metadata":{"name":"winnie"}}
-`),
-			exp: expected{
-				out: []map[string]interface{}{testConfigMap},
-			},
-		},
-		"goodYaml1": {
-			input: []byte(`
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: winnie
-`),
-			exp: expected{
-				out: []map[string]interface{}{testConfigMap},
-			},
-		},
-		"goodYaml2": {
-			input: []byte(`
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: winnie
----
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: winnie
-`),
-			exp: expected{
-				out: []map[string]interface{}{testConfigMap, testConfigMap},
-			},
-		},
-		"localConfigYaml": {
-			input: []byte(`
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: winnie-skip
-  annotations:
-    # this annotation causes the Resource to be ignored by kustomize
-    config.kubernetes.io/local-config: ""
----
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: winnie
-`),
-			exp: expected{
-				out: []map[string]interface{}{testConfigMap},
-			},
-		},
-		"garbageInOneOfTwoObjects": {
-			input: []byte(`
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: winnie
----
-WOOOOOOOOOOOOOOOOOOOOOOOOT:  woot
-`),
-			exp: expected{
-				isErr: true,
-			},
-		},
-		"emptyObjects": {
-			input: []byte(`
----
-#a comment
-
----
-
-`),
-			exp: expected{
-				out: []map[string]interface{}{},
-			},
-		},
-		"Missing .metadata.name in object": {
-			input: []byte(`
-apiVersion: v1
-kind: Namespace
-metadata:
-  annotations:
-    foo: bar
-`),
-			exp: expected{
-				isErr: true,
-			},
-		},
-		"nil value in list": {
-			input: []byte(`
-apiVersion: builtin
-kind: ConfigMapGenerator
-metadata:
-  name: kube100-site
-	labels:
-	  app: web
-testList:
-- testA
--
-`),
-			exp: expected{
-				isErr: true,
-			},
-		},
-		"List": {
-			input: []byte(`
-apiVersion: v1
-kind: List
-items:
-- apiVersion: v1
-  kind: ConfigMap
-  metadata:
-    name: winnie
-- apiVersion: v1
-  kind: ConfigMap
-  metadata:
-    name: winnie
-`),
-			exp: expected{
-				out: []map[string]interface{}{
-					testConfigMap,
-					testConfigMap},
-			},
-		},
-		"ConfigMapList": {
-			input: []byte(`
-apiVersion: v1
-kind: ConfigMapList
-items:
-- apiVersion: v1
-  kind: ConfigMap
-  metadata:
-    name: winnie
-- apiVersion: v1
-  kind: ConfigMap
-  metadata:
-    name: winnie
-`),
-			exp: expected{
-				out: []map[string]interface{}{testConfigMapList},
-			},
-		},
-		"listWithAnchors": {
-			input: []byte(`
-apiVersion: v1
-kind: DeploymentList
-items:
-- apiVersion: apps/v1
-  kind: Deployment
-  metadata:
-    name: deployment-a
-  spec: &hostAliases
-    template:
-      spec:
-        hostAliases:
-        - hostnames:
-          - a.example.com
-          ip: 8.8.8.8
-- apiVersion: apps/v1
-  kind: Deployment
-  metadata:
-    name: deployment-b
-  spec:
-    <<: *hostAliases
-`),
-			exp: expected{
-				out: []map[string]interface{}{testDeploymentList},
-			},
-		},
-	}
-
-	for n := range testCases {
-		tc := testCases[n]
-		t.Run(n, func(t *testing.T) {
-			rs, err := factory.SliceFromBytes(tc.input)
-			if err != nil {
-				assert.True(t, tc.exp.isErr)
-				return
-			}
-			assert.False(t, tc.exp.isErr)
-			assert.Equal(t, len(tc.exp.out), len(rs))
-			for i := range rs {
-				rsMap, err := rs[i].Map()
-				assert.NoError(t, err)
-				assert.Equal(
-					t, fmt.Sprintf("%v", tc.exp.out[i]), fmt.Sprintf("%v", rsMap))
-				if n != "listWithAnchors" {
-					// https://github.com/kubernetes-sigs/kustomize/issues/3271
-					m, _ := rs[i].Map()
-					if !reflect.DeepEqual(tc.exp.out[i], m) {
-						t.Fatalf("%s:\nexpected: %v\n  actual: %v",
-							n, tc.exp.out[i], m)
-					}
-				}
-			}
-		})
-	}
-}

api/internal/wrappy/wnode.go

@@ -1,292 +0,0 @@
-// Copyright 2020 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-package wrappy
-
-import (
-	"fmt"
-	"log"
-	"regexp"
-	"strconv"
-	"strings"
-
-	"sigs.k8s.io/kustomize/api/ifc"
-	"sigs.k8s.io/kustomize/api/resid"
-	"sigs.k8s.io/kustomize/kyaml/yaml"
-)
-
-// WNode implements ifc.Kunstructured using yaml.RNode.
-//
-// It exists only to help manage a switch from
-// kunstruct.UnstructAdapter to yaml.RNode as the core
-// representation of KRM objects in kustomize.
-//
-// It's got a silly name because we don't want it around for long,
-// and want its use to be obvious.
-type WNode struct {
-	node *yaml.RNode
-}
-
-var _ ifc.Kunstructured = (*WNode)(nil)
-
-func NewWNode() *WNode {
-	return FromRNode(yaml.NewRNode(nil))
-}
-
-func FromMap(m map[string]interface{}) (*WNode, error) {
-	n, err := yaml.FromMap(m)
-	if err != nil {
-		return nil, err
-	}
-	return FromRNode(n), nil
-}
-
-func FromRNode(node *yaml.RNode) *WNode {
-	return &WNode{node: node}
-}
-
-func (wn *WNode) AsRNode() *yaml.RNode {
-	return wn.node
-}
-
-func (wn *WNode) demandMetaData(label string) yaml.ResourceMeta {
-	meta, err := wn.node.GetMeta()
-	if err != nil {
-		// Log and die since interface doesn't allow error.
-		log.Fatalf("for %s', expected valid resource: %v", label, err)
-	}
-	return meta
-}
-
-// Copy implements ifc.Kunstructured.
-func (wn *WNode) Copy() ifc.Kunstructured {
-	return &WNode{node: wn.node.Copy()}
-}
-
-// GetAnnotations implements ifc.Kunstructured.
-func (wn *WNode) GetAnnotations() map[string]string {
-	return wn.demandMetaData("GetAnnotations").Annotations
-}
-
-// convertSliceIndex traverses the items in `fields` and find
-// if there is a slice index in the item and change it to a
-// valid Lookup field path. For example, 'ports[0]' will be
-// converted to 'ports' and '0'.
-func convertSliceIndex(fields []string) []string {
-	var res []string
-	for _, s := range fields {
-		if !strings.HasSuffix(s, "]") {
-			res = append(res, s)
-			continue
-		}
-		re := regexp.MustCompile(`^(.*)\[(\d+)\]$`)
-		groups := re.FindStringSubmatch(s)
-		if len(groups) == 0 {
-			// no match, add to result
-			res = append(res, s)
-			continue
-		}
-		if groups[1] != "" {
-			res = append(res, groups[1])
-		}
-		res = append(res, groups[2])
-	}
-	return res
-}
-
-// GetFieldValue implements ifc.Kunstructured.
-func (wn *WNode) GetFieldValue(path string) (interface{}, error) {
-	fields := convertSliceIndex(strings.Split(path, "."))
-	rn, err := wn.node.Pipe(yaml.Lookup(fields...))
-	if err != nil {
-		return nil, err
-	}
-	if rn == nil {
-		return nil, NoFieldError{path}
-	}
-	yn := rn.YNode()
-
-	// If this is an alias node, resolve it
-	if yn.Kind == yaml.AliasNode {
-		yn = yn.Alias
-	}
-
-	// Return value as map for DocumentNode and MappingNode kinds
-	if yn.Kind == yaml.DocumentNode || yn.Kind == yaml.MappingNode {
-		var result map[string]interface{}
-		if err := yn.Decode(&result); err != nil {
-			return nil, err
-		}
-		return result, err
-	}
-
-	// Return value as slice for SequenceNode kind
-	if yn.Kind == yaml.SequenceNode {
-		var result []interface{}
-		if err := yn.Decode(&result); err != nil {
-			return nil, err
-		}
-		return result, nil
-	}
-	if yn.Kind != yaml.ScalarNode {
-		return nil, fmt.Errorf("expected ScalarNode, got Kind=%d", yn.Kind)
-	}
-
-	// TODO: When doing kustomize var replacement, which is likely a
-	// a primary use of this function and the reason it returns interface{}
-	// rather than string, we do conversion from Nodes to Go types and back
-	// to nodes.  We should figure out how to do replacement using raw nodes,
-	// assuming we keep the var feature in kustomize.
-	// The other end of this is: refvar.go:updateNodeValue.
-	switch yn.Tag {
-	case yaml.NodeTagString:
-		return yn.Value, nil
-	case yaml.NodeTagInt:
-		return strconv.Atoi(yn.Value)
-	case yaml.NodeTagFloat:
-		return strconv.ParseFloat(yn.Value, 64)
-	case yaml.NodeTagBool:
-		return strconv.ParseBool(yn.Value)
-	default:
-		// Possibly this should be an error or log.
-		return yn.Value, nil
-	}
-}
-
-// GetGvk implements ifc.Kunstructured.
-func (wn *WNode) GetGvk() resid.Gvk {
-	meta := wn.demandMetaData("GetGvk")
-	g, v := resid.ParseGroupVersion(meta.APIVersion)
-	return resid.Gvk{Group: g, Version: v, Kind: meta.Kind}
-}
-
-// GetDataMap implements ifc.Kunstructured.
-func (wn *WNode) GetDataMap() map[string]string {
-	return wn.node.GetDataMap()
-}
-
-// SetDataMap implements ifc.Kunstructured.
-func (wn *WNode) SetDataMap(m map[string]string) {
-	wn.node.SetDataMap(m)
-}
-
-// GetBinaryDataMap implements ifc.Kunstructured.
-func (wn *WNode) GetBinaryDataMap() map[string]string {
-	return wn.node.GetBinaryDataMap()
-}
-
-// SetBinaryDataMap implements ifc.Kunstructured.
-func (wn *WNode) SetBinaryDataMap(m map[string]string) {
-	wn.node.SetBinaryDataMap(m)
-}
-
-// GetKind implements ifc.Kunstructured.
-func (wn *WNode) GetKind() string {
-	return wn.demandMetaData("GetKind").Kind
-}
-
-// GetLabels implements ifc.Kunstructured.
-func (wn *WNode) GetLabels() map[string]string {
-	return wn.demandMetaData("GetLabels").Labels
-}
-
-// GetName implements ifc.Kunstructured.
-func (wn *WNode) GetName() string {
-	return wn.demandMetaData("GetName").Name
-}
-
-// GetSlice implements ifc.Kunstructured.
-func (wn *WNode) GetSlice(path string) ([]interface{}, error) {
-	value, err := wn.GetFieldValue(path)
-	if err != nil {
-		return nil, err
-	}
-	if sliceValue, ok := value.([]interface{}); ok {
-		return sliceValue, nil
-	}
-	return nil, fmt.Errorf("node %s is not a slice", path)
-}
-
-// GetSlice implements ifc.Kunstructured.
-func (wn *WNode) GetString(path string) (string, error) {
-	value, err := wn.GetFieldValue(path)
-	if err != nil {
-		return "", err
-	}
-	if v, ok := value.(string); ok {
-		return v, nil
-	}
-	return "", fmt.Errorf("node %s is not a string: %v", path, value)
-}
-
-// Map implements ifc.Kunstructured.
-func (wn *WNode) Map() (map[string]interface{}, error) {
-	return wn.node.Map()
-}
-
-// MarshalJSON implements ifc.Kunstructured.
-func (wn *WNode) MarshalJSON() ([]byte, error) {
-	return wn.node.MarshalJSON()
-}
-
-// MatchesAnnotationSelector implements ifc.Kunstructured.
-func (wn *WNode) MatchesAnnotationSelector(selector string) (bool, error) {
-	return wn.node.MatchesAnnotationSelector(selector)
-}
-
-// MatchesLabelSelector implements ifc.Kunstructured.
-func (wn *WNode) MatchesLabelSelector(selector string) (bool, error) {
-	return wn.node.MatchesLabelSelector(selector)
-}
-
-// SetAnnotations implements ifc.Kunstructured.
-func (wn *WNode) SetAnnotations(annotations map[string]string) {
-	if err := wn.node.SetAnnotations(annotations); err != nil {
-		log.Fatal(err) // interface doesn't allow error.
-	}
-}
-
-// SetGvk implements ifc.Kunstructured.
-func (wn *WNode) SetGvk(gvk resid.Gvk) {
-	wn.setMapField(yaml.NewScalarRNode(gvk.Kind), yaml.KindField)
-	wn.setMapField(yaml.NewScalarRNode(gvk.ApiVersion()), yaml.APIVersionField)
-}
-
-// SetLabels implements ifc.Kunstructured.
-func (wn *WNode) SetLabels(labels map[string]string) {
-	if err := wn.node.SetLabels(labels); err != nil {
-		log.Fatal(err) // interface doesn't allow error.
-	}
-}
-
-// SetName implements ifc.Kunstructured.
-func (wn *WNode) SetName(name string) {
-	wn.setMapField(yaml.NewScalarRNode(name), yaml.MetadataField, yaml.NameField)
-}
-
-// SetNamespace implements ifc.Kunstructured.
-func (wn *WNode) SetNamespace(ns string) {
-	if err := wn.node.SetNamespace(ns); err != nil {
-		log.Fatal(err) // interface doesn't allow error.
-	}
-}
-
-func (wn *WNode) setMapField(value *yaml.RNode, path ...string) {
-	if err := wn.node.SetMapField(value, path...); err != nil {
-		// Log and die since interface doesn't allow error.
-		log.Fatalf("failed to set field %v: %v", path, err)
-	}
-}
-
-// UnmarshalJSON implements ifc.Kunstructured.
-func (wn *WNode) UnmarshalJSON(data []byte) error {
-	return wn.node.UnmarshalJSON(data)
-}
-
-type NoFieldError struct {
-	Field string
-}
-
-func (e NoFieldError) Error() string {
-	return fmt.Sprintf("no field named '%s'", e.Field)
-}

api/internal/wrappy/wnode_test.go

@@ -1,670 +0,0 @@
-// Copyright 2019 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-package wrappy
-
-import (
-	"strings"
-	"testing"
-
-	"github.com/google/go-cmp/cmp"
-	"github.com/stretchr/testify/assert"
-	"gopkg.in/yaml.v3"
-	"sigs.k8s.io/kustomize/api/resid"
-	kyaml "sigs.k8s.io/kustomize/kyaml/yaml"
-)
-
-const (
-	deploymentLittleJson = `{"apiVersion":"apps/v1","kind":"Deployment",` +
-		`"metadata":{"name":"homer","namespace":"simpsons"}}`
-
-	deploymentBiggerJson = `
-{
-  "apiVersion": "apps/v1",
-  "kind": "Deployment",
-  "metadata": {
-    "name": "homer",
-    "namespace": "simpsons",
-    "labels": {
-      "fruit": "apple",
-      "veggie": "carrot"
-    },
-    "annotations": {
-      "area": "51",
-      "greeting": "Take me to your leader."
-    }
-  },
-  "spec": {
-    "template": {
-      "spec": {
-        "containers": [
-          {
-            "env": [
-              {
-                "name": "CM_FOO",
-                "valueFrom": {
-                  "configMapKeyRef": {
-                    "key": "somekey",
-                    "name": "myCm"
-                  }
-                }
-              },
-              {
-                "name": "SECRET_FOO",
-                "valueFrom": {
-                  "secretKeyRef": {
-                    "key": "someKey",
-                    "name": "mySecret"
-                  }
-                }
-              }
-            ],
-            "image": "nginx:1.7.9",
-            "name": "nginx"
-          }
-        ]
-      }
-    }
-  }
-}
-`
-	bigMapYaml = `Kind: Service
-complextree:
-  - field1:
-      - boolfield: true
-        floatsubfield: 1.01
-        intsubfield: 1010
-        stringsubfield: idx1010
-      - boolfield: false
-        floatsubfield: 1.011
-        intsubfield: 1011
-        stringsubfield: idx1011
-    field2:
-      - boolfield: true
-        floatsubfield: 1.02
-        intsubfield: 1020
-        stringsubfield: idx1020
-      - boolfield: false
-        floatsubfield: 1.021
-        intsubfield: 1021
-        stringsubfield: idx1021
-  - field1:
-      - boolfield: true
-        floatsubfield: 1.11
-        intsubfield: 1110
-        stringsubfield: idx1110
-      - boolfield: false
-        floatsubfield: 1.111
-        intsubfield: 1111
-        stringsubfield: idx1111
-    field2:
-      - boolfield: true
-        floatsubfield: 1.112
-        intsubfield: 1120
-        stringsubfield: idx1120
-      - boolfield: false
-        floatsubfield: 1.1121
-        intsubfield: 1121
-        stringsubfield: idx1121
-metadata:
-    labels:
-        app: application-name
-    name: service-name
-spec:
-    ports:
-        port: 80
-that:
-  - idx0
-  - idx1
-  - idx2
-  - idx3
-these:
-  - field1:
-      - idx010
-      - idx011
-    field2:
-      - idx020
-      - idx021
-  - field1:
-      - idx110
-      - idx111
-    field2:
-      - idx120
-      - idx121
-  - field1:
-      - idx210
-      - idx211
-    field2:
-      - idx220
-      - idx221
-this:
-    is:
-        aBool: true
-        aFloat: 1.001
-        aNilValue: null
-        aNumber: 1000
-        anEmptyMap: {}
-        anEmptySlice: []
-those:
-  - field1: idx0foo
-    field2: idx0bar
-  - field1: idx1foo
-    field2: idx1bar
-  - field1: idx2foo
-    field2: idx2bar
-`
-)
-
-func makeBigMap() map[string]interface{} {
-	return map[string]interface{}{
-		"Kind": "Service",
-		"metadata": map[string]interface{}{
-			"labels": map[string]interface{}{
-				"app": "application-name",
-			},
-			"name": "service-name",
-		},
-		"spec": map[string]interface{}{
-			"ports": map[string]interface{}{
-				"port": int64(80),
-			},
-		},
-		"this": map[string]interface{}{
-			"is": map[string]interface{}{
-				"aNumber":      int64(1000),
-				"aFloat":       float64(1.001),
-				"aNilValue":    nil,
-				"aBool":        true,
-				"anEmptyMap":   map[string]interface{}{},
-				"anEmptySlice": []interface{}{},
-				/*
-					TODO: test for unrecognizable (e.g. a function)
-						"unrecognizable": testing.InternalExample{
-							Name: "fooBar",
-						},
-				*/
-			},
-		},
-		"that": []interface{}{
-			"idx0",
-			"idx1",
-			"idx2",
-			"idx3",
-		},
-		"those": []interface{}{
-			map[string]interface{}{
-				"field1": "idx0foo",
-				"field2": "idx0bar",
-			},
-			map[string]interface{}{
-				"field1": "idx1foo",
-				"field2": "idx1bar",
-			},
-			map[string]interface{}{
-				"field1": "idx2foo",
-				"field2": "idx2bar",
-			},
-		},
-		"these": []interface{}{
-			map[string]interface{}{
-				"field1": []interface{}{"idx010", "idx011"},
-				"field2": []interface{}{"idx020", "idx021"},
-			},
-			map[string]interface{}{
-				"field1": []interface{}{"idx110", "idx111"},
-				"field2": []interface{}{"idx120", "idx121"},
-			},
-			map[string]interface{}{
-				"field1": []interface{}{"idx210", "idx211"},
-				"field2": []interface{}{"idx220", "idx221"},
-			},
-		},
-		"complextree": []interface{}{
-			map[string]interface{}{
-				"field1": []interface{}{
-					map[string]interface{}{
-						"stringsubfield": "idx1010",
-						"intsubfield":    int64(1010),
-						"floatsubfield":  float64(1.010),
-						"boolfield":      true,
-					},
-					map[string]interface{}{
-						"stringsubfield": "idx1011",
-						"intsubfield":    int64(1011),
-						"floatsubfield":  float64(1.011),
-						"boolfield":      false,
-					},
-				},
-				"field2": []interface{}{
-					map[string]interface{}{
-						"stringsubfield": "idx1020",
-						"intsubfield":    int64(1020),
-						"floatsubfield":  float64(1.020),
-						"boolfield":      true,
-					},
-					map[string]interface{}{
-						"stringsubfield": "idx1021",
-						"intsubfield":    int64(1021),
-						"floatsubfield":  float64(1.021),
-						"boolfield":      false,
-					},
-				},
-			},
-			map[string]interface{}{
-				"field1": []interface{}{
-					map[string]interface{}{
-						"stringsubfield": "idx1110",
-						"intsubfield":    int64(1110),
-						"floatsubfield":  float64(1.110),
-						"boolfield":      true,
-					},
-					map[string]interface{}{
-						"stringsubfield": "idx1111",
-						"intsubfield":    int64(1111),
-						"floatsubfield":  float64(1.111),
-						"boolfield":      false,
-					},
-				},
-				"field2": []interface{}{
-					map[string]interface{}{
-						"stringsubfield": "idx1120",
-						"intsubfield":    int64(1120),
-						"floatsubfield":  float64(1.1120),
-						"boolfield":      true,
-					},
-					map[string]interface{}{
-						"stringsubfield": "idx1121",
-						"intsubfield":    int64(1121),
-						"floatsubfield":  float64(1.1121),
-						"boolfield":      false,
-					},
-				},
-			},
-		},
-	}
-}
-
-func TestBasicYamlOperationFromMap(t *testing.T) {
-	bytes, err := yaml.Marshal(makeBigMap())
-	if err != nil {
-		t.Fatalf("unexpected yaml.Marshal err: %v", err)
-	}
-	if string(bytes) != bigMapYaml {
-		t.Fatalf("unexpected string equality")
-	}
-	rNode, err := kyaml.Parse(string(bytes))
-	if err != nil {
-		t.Fatalf("unexpected yaml.Marshal err: %v", err)
-	}
-	rNodeString := rNode.MustString()
-	// The result from MustString has more indentation
-	// than bigMapYaml.
-	rNodeStrings := strings.Split(rNodeString, "\n")
-	bigMapStrings := strings.Split(bigMapYaml, "\n")
-	if len(rNodeStrings) != len(bigMapStrings) {
-		t.Fatalf("line count mismatch")
-	}
-	for i := range rNodeStrings {
-		s1 := strings.TrimSpace(rNodeStrings[i])
-		s2 := strings.TrimSpace(bigMapStrings[i])
-		if s1 != s2 {
-			t.Fatalf("expected '%s'=='%s'", s1, s2)
-		}
-	}
-}
-
-func TestRoundTripJSON(t *testing.T) {
-	wn := NewWNode()
-	err := wn.UnmarshalJSON([]byte(deploymentLittleJson))
-	if err != nil {
-		t.Fatalf("unexpected UnmarshalJSON err: %v", err)
-	}
-	data, err := wn.MarshalJSON()
-	if err != nil {
-		t.Fatalf("unexpected MarshalJSON err: %v", err)
-	}
-	actual := string(data)
-	if actual != deploymentLittleJson {
-		t.Fatalf("expected %s, got %s", deploymentLittleJson, actual)
-	}
-}
-
-func TestGettingFields(t *testing.T) {
-	wn := NewWNode()
-	err := wn.UnmarshalJSON([]byte(deploymentBiggerJson))
-	if err != nil {
-		t.Fatalf("unexpected unmarshaljson err: %v", err)
-	}
-	gvk := wn.GetGvk()
-	expected := "apps"
-	actual := gvk.Group
-	if expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-	expected = "v1"
-	actual = gvk.Version
-	if expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-	expected = "Deployment"
-	actual = gvk.Kind
-	if expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-	actual = wn.GetKind()
-	if expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-	expected = "homer"
-	actual = wn.GetName()
-	if expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-	actualMap := wn.GetLabels()
-	v, ok := actualMap["fruit"]
-	if !ok || v != "apple" {
-		t.Fatalf("unexpected labels '%v'", actualMap)
-	}
-	actualMap = wn.GetAnnotations()
-	v, ok = actualMap["greeting"]
-	if !ok || v != "Take me to your leader." {
-		t.Fatalf("unexpected annotations '%v'", actualMap)
-	}
-}
-
-func TestGetFieldValueReturnsMap(t *testing.T) {
-	wn := NewWNode()
-	if err := wn.UnmarshalJSON([]byte(deploymentBiggerJson)); err != nil {
-		t.Fatalf("unexpected unmarshaljson err: %v", err)
-	}
-	expected := map[string]interface{}{
-		"fruit":  "apple",
-		"veggie": "carrot",
-	}
-	actual, err := wn.GetFieldValue("metadata.labels")
-	if err != nil {
-		t.Fatalf("error getting field value: %v", err)
-	}
-	if diff := cmp.Diff(expected, actual); diff != "" {
-		t.Fatalf("actual map does not deep equal expected map:\n%v", diff)
-	}
-}
-
-func TestGetFieldValueReturnsStuff(t *testing.T) {
-	wn := NewWNode()
-	if err := wn.UnmarshalJSON([]byte(deploymentBiggerJson)); err != nil {
-		t.Fatalf("unexpected unmarshaljson err: %v", err)
-	}
-	expected := []interface{}{
-		map[string]interface{}{
-			"env": []interface{}{
-				map[string]interface{}{
-					"name": "CM_FOO",
-					"valueFrom": map[string]interface{}{
-						"configMapKeyRef": map[string]interface{}{
-							"key":  "somekey",
-							"name": "myCm",
-						},
-					},
-				},
-				map[string]interface{}{
-					"name": "SECRET_FOO",
-					"valueFrom": map[string]interface{}{
-						"secretKeyRef": map[string]interface{}{
-							"key":  "someKey",
-							"name": "mySecret",
-						},
-					},
-				},
-			},
-			"image": string("nginx:1.7.9"),
-			"name":  string("nginx"),
-		},
-	}
-	actual, err := wn.GetFieldValue("spec.template.spec.containers")
-	if err != nil {
-		t.Fatalf("error getting field value: %v", err)
-	}
-	if diff := cmp.Diff(expected, actual); diff != "" {
-		t.Fatalf("actual map does not deep equal expected map:\n%v", diff)
-	}
-	// Cannot go deeper yet.
-	_, err = wn.GetFieldValue("spec.template.spec.containers.env")
-	if err == nil {
-		t.Fatalf("expected err %v", err)
-	}
-}
-
-func TestGetFieldValueReturnsSlice(t *testing.T) {
-	bytes, err := yaml.Marshal(makeBigMap())
-	if err != nil {
-		t.Fatalf("unexpected yaml.Marshal err: %v", err)
-	}
-	rNode, err := kyaml.Parse(string(bytes))
-	if err != nil {
-		t.Fatalf("unexpected yaml.Marshal err: %v", err)
-	}
-	wn := FromRNode(rNode)
-	expected := []interface{}{"idx0", "idx1", "idx2", "idx3"}
-	actual, err := wn.GetFieldValue("that")
-	if err != nil {
-		t.Fatalf("error getting slice: %v", err)
-	}
-	if diff := cmp.Diff(expected, actual); diff != "" {
-		t.Fatalf("actual slice does not deep equal expected slice:\n%v", diff)
-	}
-}
-
-func TestGetFieldValueReturnsSliceOfMappings(t *testing.T) {
-	bytes, err := yaml.Marshal(makeBigMap())
-	if err != nil {
-		t.Fatalf("unexpected yaml.Marshal err: %v", err)
-	}
-	rNode, err := kyaml.Parse(string(bytes))
-	if err != nil {
-		t.Fatalf("unexpected yaml.Marshal err: %v", err)
-	}
-	wn := FromRNode(rNode)
-	expected := []interface{}{
-		map[string]interface{}{
-			"field1": "idx0foo",
-			"field2": "idx0bar",
-		},
-		map[string]interface{}{
-			"field1": "idx1foo",
-			"field2": "idx1bar",
-		},
-		map[string]interface{}{
-			"field1": "idx2foo",
-			"field2": "idx2bar",
-		},
-	}
-	actual, err := wn.GetFieldValue("those")
-	if err != nil {
-		t.Fatalf("error getting slice: %v", err)
-	}
-	if diff := cmp.Diff(expected, actual); diff != "" {
-		t.Fatalf("actual slice does not deep equal expected slice:\n%v", diff)
-	}
-}
-
-func TestGetFieldValueReturnsString(t *testing.T) {
-	wn := NewWNode()
-	if err := wn.UnmarshalJSON([]byte(deploymentBiggerJson)); err != nil {
-		t.Fatalf("unexpected unmarshaljson err: %v", err)
-	}
-	actual, err := wn.GetFieldValue("metadata.labels.fruit")
-	if err != nil {
-		t.Fatalf("error getting field value: %v", err)
-	}
-	v, ok := actual.(string)
-	if !ok || v != "apple" {
-		t.Fatalf("unexpected value '%v'", actual)
-	}
-}
-
-func TestGetFieldValueResolvesAlias(t *testing.T) {
-	yamlWithAlias := `
-foo: &a theValue
-bar: *a
-`
-	rNode, err := kyaml.Parse(yamlWithAlias)
-	if err != nil {
-		t.Fatalf("unexpected yaml parse error: %v", err)
-	}
-	wn := FromRNode(rNode)
-	actual, err := wn.GetFieldValue("bar")
-	if err != nil {
-		t.Fatalf("error getting field value: %v", err)
-	}
-	v, ok := actual.(string)
-	if !ok || v != "theValue" {
-		t.Fatalf("unexpected value '%v'", actual)
-	}
-}
-
-func TestGetString(t *testing.T) {
-	wn := NewWNode()
-	if err := wn.UnmarshalJSON([]byte(deploymentBiggerJson)); err != nil {
-		t.Fatalf("unexpected unmarshaljson err: %v", err)
-	}
-	expected := "carrot"
-	actual, err := wn.GetString("metadata.labels.veggie")
-	if err != nil {
-		t.Fatalf("error getting string: %v", err)
-	}
-	if expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-}
-
-func TestGetSlice(t *testing.T) {
-	bytes, err := yaml.Marshal(makeBigMap())
-	if err != nil {
-		t.Fatalf("unexpected yaml.Marshal err: %v", err)
-	}
-	rNode, err := kyaml.Parse(string(bytes))
-	if err != nil {
-		t.Fatalf("unexpected yaml.Marshal err: %v", err)
-	}
-	wn := FromRNode(rNode)
-	expected := []interface{}{"idx0", "idx1", "idx2", "idx3"}
-	actual, err := wn.GetSlice("that")
-	if err != nil {
-		t.Fatalf("error getting slice: %v", err)
-	}
-	if diff := cmp.Diff(expected, actual); diff != "" {
-		t.Fatalf("actual slice does not deep equal expected slice:\n%v", diff)
-	}
-}
-
-func TestMapEmpty(t *testing.T) {
-	newNodeMap, err := NewWNode().Map()
-	assert.NoError(t, err)
-	assert.Equal(t, 0, len(newNodeMap))
-}
-
-func TestMap(t *testing.T) {
-	wn := NewWNode()
-	if err := wn.UnmarshalJSON([]byte(deploymentLittleJson)); err != nil {
-		t.Fatalf("unexpected unmarshaljson err: %v", err)
-	}
-
-	expected := map[string]interface{}{
-		"apiVersion": "apps/v1",
-		"kind":       "Deployment",
-		"metadata": map[string]interface{}{
-			"name":      "homer",
-			"namespace": "simpsons",
-		},
-	}
-
-	actual, err := wn.Map()
-	assert.NoError(t, err)
-	if diff := cmp.Diff(expected, actual); diff != "" {
-		t.Fatalf("actual map does not deep equal expected map:\n%v", diff)
-	}
-}
-
-func TestSetName(t *testing.T) {
-	wn := NewWNode()
-	if err := wn.UnmarshalJSON([]byte(deploymentBiggerJson)); err != nil {
-		t.Fatalf("unexpected unmarshaljson err: %v", err)
-	}
-	wn.SetName("marge")
-	if expected, actual := "marge", wn.GetName(); expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-}
-
-func TestSetNamespace(t *testing.T) {
-	wn := NewWNode()
-	if err := wn.UnmarshalJSON([]byte(deploymentBiggerJson)); err != nil {
-		t.Fatalf("unexpected unmarshaljson err: %v", err)
-	}
-	wn.SetNamespace("flanders")
-	meta, _ := wn.node.GetMeta()
-	if expected, actual := "flanders", meta.Namespace; expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-}
-
-func TestSetLabels(t *testing.T) {
-	wn := NewWNode()
-	if err := wn.UnmarshalJSON([]byte(deploymentBiggerJson)); err != nil {
-		t.Fatalf("unexpected unmarshaljson err: %v", err)
-	}
-	wn.SetLabels(map[string]string{
-		"label1": "foo",
-		"label2": "bar",
-	})
-	labels := wn.GetLabels()
-	if expected, actual := 2, len(labels); expected != actual {
-		t.Fatalf("expected '%d', got '%d'", expected, actual)
-	}
-	if expected, actual := "foo", labels["label1"]; expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-	if expected, actual := "bar", labels["label2"]; expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-}
-
-func TestGetAnnotations(t *testing.T) {
-	wn := NewWNode()
-	if err := wn.UnmarshalJSON([]byte(deploymentBiggerJson)); err != nil {
-		t.Fatalf("unexpected unmarshaljson err: %v", err)
-	}
-	wn.SetAnnotations(map[string]string{
-		"annotation1": "foo",
-		"annotation2": "bar",
-	})
-	annotations := wn.GetAnnotations()
-	if expected, actual := 2, len(annotations); expected != actual {
-		t.Fatalf("expected '%d', got '%d'", expected, actual)
-	}
-	if expected, actual := "foo", annotations["annotation1"]; expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-	if expected, actual := "bar", annotations["annotation2"]; expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-}
-
-func TestSetGvk(t *testing.T) {
-	wn := NewWNode()
-	if err := wn.UnmarshalJSON([]byte(deploymentBiggerJson)); err != nil {
-		t.Fatalf("unexpected unmarshaljson err: %v", err)
-	}
-	wn.SetGvk(resid.GvkFromString("grp_ver_knd"))
-	gvk := wn.GetGvk()
-	if expected, actual := "grp", gvk.Group; expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-	if expected, actual := "ver", gvk.Version; expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-	if expected, actual := "knd", gvk.Kind; expected != actual {
-		t.Fatalf("expected '%s', got '%s'", expected, actual)
-	}
-}