From 2029c662782922c6c2a2f54c945191371da064c9 Mon Sep 17 00:00:00 2001
From: John Ryan <jtigger@infosysengr.com>
Date: Sat, 12 Mar 2022 15:38:36 -0800
Subject: [PATCH] Render YAML with yaml.v3

- yaml.v3 author refuses to support special indentation for sequences;
  adjust tests containing arrays to indent.
  (see also: https://github.com/go-yaml/yaml/issues/661)
---
 examples/concourse-overlay/expected.txt       | 16 ++--
 .../data-values-multiple-envs/expected.txt    |  8 +-
 examples/data-values-required/expected.txt    |  2 +-
 examples/eirini/config-result.yml             | 38 ++++----
 examples/k8s-config-map-files/expected.txt    |  6 +-
 .../k8s-overlay-all-containers/expected.txt   | 92 +++++++++---------
 .../k8s-overlay-remove-resources/expected.txt | 62 ++++++-------
 .../k8s-relative-rolling-update/expected.txt  |  8 +-
 examples/k8s-update-env-var/expected.txt      | 16 ++--
 examples/schema-arrays/expected.txt           | 42 ++++-----
 go.mod                                        |  2 +-
 pkg/cmd/template/cmd_data_values_file_test.go |  2 +-
 pkg/cmd/template/cmd_library_module_test.go   |  6 +-
 pkg/cmd/template/cmd_overlays_test.go         | 16 ++--
 pkg/cmd/template/cmd_test.go                  | 93 +++++++++----------
 pkg/cmd/template/regular_input.go             |  1 +
 pkg/cmd/template/schema_author_test.go        | 20 ++--
 pkg/cmd/template/schema_consumer_test.go      | 84 ++++++++---------
 pkg/cmd/template/schema_inspect_test.go       | 68 +++++++-------
 pkg/yamlmeta/convert.go                       | 72 ++++++++++++++
 pkg/yamlmeta/document.go                      | 21 ++++-
 .../filetests/annotation-for.tpltest          | 18 ++--
 pkg/yamltemplate/filetests/datatypes.tpltest  |  6 +-
 .../filetests/def-across-docs.tpltest         |  4 +-
 .../filetests/def-recursive.tpltest           | 12 +--
 pkg/yamltemplate/filetests/def-return.tpltest | 10 +-
 pkg/yamltemplate/filetests/def.tpltest        |  8 +-
 pkg/yamltemplate/filetests/for-break.tpltest  |  6 +-
 .../filetests/for-continue.tpltest            |  4 +-
 pkg/yamltemplate/filetests/for.tpltest        | 12 +--
 .../filetests/fragment/array.tpltest          | 24 ++---
 .../filetests/fragment/docset.tpltest         | 18 ++--
 .../filetests/fragment/map.tpltest            | 32 +++----
 pkg/yamltemplate/filetests/if.tpltest         |  6 +-
 .../node-sugar/node-for-nested.tpltest        | 50 +++++-----
 .../filetests/node-sugar/node-for.tpltest     |  6 +-
 .../yaml-map-item-in-array-item.tpltest       | 20 ++--
 .../ytt-library/assert/assert-try-to.tpltest  |  8 +-
 .../ytt-library/data-values-struct.tpltest    | 42 ++++-----
 .../filetests/ytt-library/data-values.tpltest | 12 +--
 .../filetests/ytt-library/json.tpltest        |  8 +-
 .../overlay/append-to-array.tpltest           | 10 +-
 .../ytt-library/overlay/array-by-key.tpltest  | 16 ++--
 .../ytt-library/overlay/assert-nested.tpltest |  8 +-
 .../ytt-library/overlay/assert.tpltest        |  8 +-
 .../ytt-library/overlay/doc-subset.tpltest    | 16 ++--
 .../overlay/insert-into-array.tpltest         | 30 +++---
 .../ytt-library/overlay/logical-ops.tpltest   | 56 +++++------
 .../overlay/match-child-defaults.tpltest      | 16 ++--
 .../overlay/merge-over-nil.tpltest            |  2 +-
 .../ytt-library/overlay/overlay.tpltest       | 20 ++--
 .../ytt-library/overlay/replace-func.tpltest  |  4 +-
 .../overlay/replace-or-add.tpltest            | 10 +-
 .../overlay/required-nested.tpltest           |  4 +-
 .../ytt-library/overlay/when.tpltest          |  6 +-
 .../overlay/yaml-array-over-yaml-map.tpltest  |  4 +-
 .../ytt-library/overlay/yaml-over-map.tpltest |  6 +-
 .../filetests/ytt-library/struct-sort.tpltest |  6 +-
 .../filetests/ytt-library/struct.tpltest      | 32 +++----
 .../filetests/ytt-library/toml.tpltest        |  8 +-
 .../filetests/ytt-library/url/url.tpltest     | 10 +-
 .../filetests/ytt-library/yaml.tpltest        | 34 +++----
 .../filetests/ytt-replace/array-item.tpltest  | 42 ++++-----
 test/e2e/e2e_test.go                          | 32 +++----
 64 files changed, 725 insertions(+), 636 deletions(-)

diff --git a/examples/concourse-overlay/expected.txt b/examples/concourse-overlay/expected.txt
index 3753215c4..c8a879e71 100644
--- a/examples/concourse-overlay/expected.txt
+++ b/examples/concourse-overlay/expected.txt
@@ -1,10 +1,10 @@
 resources:
-- name: booklit
-  type: git
-  source:
-    uri: https://github.com/vito/booklit
+  - name: booklit
+    type: git
+    source:
+      uri: https://github.com/vito/booklit
 jobs:
-- name: unit
-  plan:
-  - get: booklit
-    trigger: true
+  - name: unit
+    plan:
+      - get: booklit
+        trigger: true
diff --git a/examples/data-values-multiple-envs/expected.txt b/examples/data-values-multiple-envs/expected.txt
index 07281c416..f8d1a8a53 100644
--- a/examples/data-values-multiple-envs/expected.txt
+++ b/examples/data-values-multiple-envs/expected.txt
@@ -1,19 +1,19 @@
 app_config:
   version: "123"
   ports:
-  - 8080
+    - 8080
 ***
 app_config:
   version: v1alpha1
   ports:
-  - 8080
+    - 8080
 ***
 app_config:
   version: v1beta1
   ports:
-  - 8081
+    - 8081
 ***
 app_config:
   version: v1
   ports:
-  - 80
+    - 80
diff --git a/examples/data-values-required/expected.txt b/examples/data-values-required/expected.txt
index b461dcb95..e2bc1db9b 100644
--- a/examples/data-values-required/expected.txt
+++ b/examples/data-values-required/expected.txt
@@ -1,4 +1,4 @@
 app_config:
   version: "123"
   ports:
-  - 8080
+    - 8080
diff --git a/examples/eirini/config-result.yml b/examples/eirini/config-result.yml
index 44bb7246e..f1c1e8703 100644
--- a/examples/eirini/config-result.yml
+++ b/examples/eirini/config-result.yml
@@ -11,8 +11,8 @@ metadata:
     app.kubernetes.io/version: chart-appver
     helm.sh/chart: chart-name-chart-ver
 subjects:
-- kind: ServiceAccount
-  name: secret-generator
+  - kind: ServiceAccount
+    name: secret-generator
 roleRef:
   kind: Role
   name: configgin-role
@@ -31,8 +31,8 @@ metadata:
     app.kubernetes.io/version: chart-appver
     helm.sh/chart: chart-name-chart-ver
 subjects:
-- kind: ServiceAccount
-  name: secret-generator
+  - kind: ServiceAccount
+    name: secret-generator
 roleRef:
   kind: Role
   name: secrets-role
@@ -51,9 +51,9 @@ metadata:
     app.kubernetes.io/version: chart-appver
     helm.sh/chart: chart-name-chart-ver
 subjects:
-- kind: ServiceAccount
-  name: secret-generator
-  namespace: release-ns
+  - kind: ServiceAccount
+    name: secret-generator
+    namespace: release-ns
 roleRef:
   kind: ClusterRole
   name: release-ns-psp-role-nonprivileged
@@ -72,15 +72,15 @@ metadata:
     app.kubernetes.io/version: chart-appver
     helm.sh/chart: chart-name-chart-ver
 rules:
-- apiGroups:
-  - ""
-  resources:
-  - configmaps
-  - secrets
-  verbs:
-  - create
-  - get
-  - list
-  - patch
-  - update
-  - delete
+  - apiGroups:
+      - ""
+    resources:
+      - configmaps
+      - secrets
+    verbs:
+      - create
+      - get
+      - list
+      - patch
+      - update
+      - delete
diff --git a/examples/k8s-config-map-files/expected.txt b/examples/k8s-config-map-files/expected.txt
index 45e5cce1d..415a1c883 100644
--- a/examples/k8s-config-map-files/expected.txt
+++ b/examples/k8s-config-map-files/expected.txt
@@ -11,9 +11,9 @@ data:
   config2.yml: |
     rules2a: 123
     rules2b:
-    - a
-    - b
-    - c
+      - a
+      - b
+      - c
   config2.json: '{"rules2a":123,"rules2b":["a","b","c"]}'
   config3.yml: |
     config3a: config3a
diff --git a/examples/k8s-overlay-all-containers/expected.txt b/examples/k8s-overlay-all-containers/expected.txt
index efdde1d71..40ef4db94 100644
--- a/examples/k8s-overlay-all-containers/expected.txt
+++ b/examples/k8s-overlay-all-containers/expected.txt
@@ -6,34 +6,34 @@ spec:
   template:
     spec:
       volumes:
-      - name: shared-data
-        emptyDir: {}
-      containers:
-      - name: nginx-container
-        image: nginx
-        volumeMounts:
-        - name: shared-data
-          mountPath: /usr/share/nginx/html
-        resources:
-          limits:
-            cpu: 100m
-          requests:
-            cpu: 100m
-      - name: debian-container
-        image: debian
-        volumeMounts:
         - name: shared-data
-          mountPath: /pod-data
-        command:
-        - /bin/sh
-        args:
-        - -c
-        - echo Hello > /pod-data/index.html
-        resources:
-          limits:
-            cpu: 100m
-          requests:
-            cpu: 100m
+          emptyDir: {}
+      containers:
+        - name: nginx-container
+          image: nginx
+          volumeMounts:
+            - name: shared-data
+              mountPath: /usr/share/nginx/html
+          resources:
+            limits:
+              cpu: 100m
+            requests:
+              cpu: 100m
+        - name: debian-container
+          image: debian
+          volumeMounts:
+            - name: shared-data
+              mountPath: /pod-data
+          command:
+            - /bin/sh
+          args:
+            - -c
+            - echo Hello > /pod-data/index.html
+          resources:
+            limits:
+              cpu: 100m
+            requests:
+              cpu: 100m
 ---
 apiVersion: apps/v1
 kind: Deployment
@@ -43,22 +43,22 @@ spec:
   template:
     spec:
       containers:
-      - name: nginx-container
-        image: nginx
-        resources:
-          limits:
-            cpu: 100m
-          requests:
-            cpu: 100m
-      - name: debian-container
-        image: debian
-        command:
-        - /bin/sh
-        args:
-        - -c
-        - echo Hello
-        resources:
-          limits:
-            cpu: 100m
-          requests:
-            cpu: 100m
+        - name: nginx-container
+          image: nginx
+          resources:
+            limits:
+              cpu: 100m
+            requests:
+              cpu: 100m
+        - name: debian-container
+          image: debian
+          command:
+            - /bin/sh
+          args:
+            - -c
+            - echo Hello
+          resources:
+            limits:
+              cpu: 100m
+            requests:
+              cpu: 100m
diff --git a/examples/k8s-overlay-remove-resources/expected.txt b/examples/k8s-overlay-remove-resources/expected.txt
index 5cfbecd36..488a80e1e 100644
--- a/examples/k8s-overlay-remove-resources/expected.txt
+++ b/examples/k8s-overlay-remove-resources/expected.txt
@@ -16,10 +16,10 @@ spec:
         sidecar.istio.io/proxyMemory: 0M
     spec:
       containers:
-      - name: nginx
-        image: nginx:1.14.2
-        ports:
-        - containerPort: 80
+        - name: nginx
+          image: nginx:1.14.2
+          ports:
+            - containerPort: 80
 ---
 apiVersion: apps/v1
 kind: Deployment
@@ -39,17 +39,17 @@ spec:
         sidecar.istio.io/proxyMemory: 0M
     spec:
       initContainers:
-      - name: setup
-        image: ubuntu
-        command:
-        - /bin/bash
-        - -c
-        - echo 1
+        - name: setup
+          image: ubuntu
+          command:
+            - /bin/bash
+            - -c
+            - echo 1
       containers:
-      - name: nginx
-        image: nginx:1.14.2
-        ports:
-        - containerPort: 80
+        - name: nginx
+          image: nginx:1.14.2
+          ports:
+            - containerPort: 80
 ---
 apiVersion: apps/v1
 kind: StatefulSet
@@ -70,21 +70,21 @@ spec:
     spec:
       terminationGracePeriodSeconds: 10
       containers:
-      - name: nginx
-        image: k8s.gcr.io/nginx-slim:0.8
-        ports:
-        - containerPort: 80
-          name: web
-        volumeMounts:
-        - name: www
-          mountPath: /usr/share/nginx/html
+        - name: nginx
+          image: k8s.gcr.io/nginx-slim:0.8
+          ports:
+            - containerPort: 80
+              name: web
+          volumeMounts:
+            - name: www
+              mountPath: /usr/share/nginx/html
   volumeClaimTemplates:
-  - metadata:
-      name: www
-    spec:
-      accessModes:
-      - ReadWriteOnce
-      storageClassName: my-storage-class
-      resources:
-        requests:
-          storage: 1Gi
+    - metadata:
+        name: www
+      spec:
+        accessModes:
+          - ReadWriteOnce
+        storageClassName: my-storage-class
+        resources:
+          requests:
+            storage: 1Gi
diff --git a/examples/k8s-relative-rolling-update/expected.txt b/examples/k8s-relative-rolling-update/expected.txt
index 0353e0912..797d2de0b 100644
--- a/examples/k8s-relative-rolling-update/expected.txt
+++ b/examples/k8s-relative-rolling-update/expected.txt
@@ -18,7 +18,7 @@ spec:
         app: nginx
     spec:
       containers:
-      - name: nginx
-        image: nginx:1.7.9
-        ports:
-        - containerPort: 80
+        - name: nginx
+          image: nginx:1.7.9
+          ports:
+            - containerPort: 80
diff --git a/examples/k8s-update-env-var/expected.txt b/examples/k8s-update-env-var/expected.txt
index 8a917a264..29882c20b 100644
--- a/examples/k8s-update-env-var/expected.txt
+++ b/examples/k8s-update-env-var/expected.txt
@@ -6,11 +6,11 @@ spec:
   template:
     spec:
       containers:
-      - name: app
-        env:
-        - name: STRIMZI_RESOURCE_LABELS
-          value: strimzi.io/cluster=my-cluster
-        - name: STRIMZI_KAFKA_BOOTSTRAP_SERVERS
-          value: NEW-my-cluster-kafka-bootstrap:9092
-        - name: STRIMZI_ZOOKEEPER_CONNECT
-          value: my-cluster-zookeeper-client:2181
+        - name: app
+          env:
+            - name: STRIMZI_RESOURCE_LABELS
+              value: strimzi.io/cluster=my-cluster
+            - name: STRIMZI_KAFKA_BOOTSTRAP_SERVERS
+              value: NEW-my-cluster-kafka-bootstrap:9092
+            - name: STRIMZI_ZOOKEEPER_CONNECT
+              value: my-cluster-zookeeper-client:2181
diff --git a/examples/schema-arrays/expected.txt b/examples/schema-arrays/expected.txt
index 979a2dbe6..76d89b8af 100644
--- a/examples/schema-arrays/expected.txt
+++ b/examples/schema-arrays/expected.txt
@@ -1,22 +1,22 @@
 resources:
-- name: cf-for-k8s-develop
-  source:
-    private_key: ((cf_for_k8s_readwrite_deploy_key.private_key))
-    branch: develop
-    uri: git@github.com:cloudfoundry/cf-for-k8s
-  type: git
-  icon: github
-- name: cf-for-k8s-ci
-  type: git
-  icon: github
-  source:
-    branch: develop
-    uri: git@github.com:cloudfoundry/cf-for-k8s
-    private_key: ((cf_for_k8s_readonly_deploy_key.private_key))
-- name: cf-acceptance-tests
-  source:
-    uri: git@github.com:cloudfoundry/cf-acceptance-tests
-    branch: develop
-    private_key: ((cf_for_k8s_readonly_deploy_key.private_key))
-  type: git
-  icon: github
+  - name: cf-for-k8s-develop
+    source:
+      private_key: ((cf_for_k8s_readwrite_deploy_key.private_key))
+      branch: develop
+      uri: git@github.com:cloudfoundry/cf-for-k8s
+    type: git
+    icon: github
+  - name: cf-for-k8s-ci
+    type: git
+    icon: github
+    source:
+      branch: develop
+      uri: git@github.com:cloudfoundry/cf-for-k8s
+      private_key: ((cf_for_k8s_readonly_deploy_key.private_key))
+  - name: cf-acceptance-tests
+    source:
+      uri: git@github.com:cloudfoundry/cf-acceptance-tests
+      branch: develop
+      private_key: ((cf_for_k8s_readonly_deploy_key.private_key))
+    type: git
+    icon: github
diff --git a/go.mod b/go.mod
index 7fc129615..f1f335804 100644
--- a/go.mod
+++ b/go.mod
@@ -14,6 +14,7 @@ require (
 	github.com/spf13/cobra v1.4.0
 	github.com/stretchr/testify v1.7.1
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
 )
 
 require (
@@ -23,5 +24,4 @@ require (
 	github.com/kr/text v0.1.0 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 )
diff --git a/pkg/cmd/template/cmd_data_values_file_test.go b/pkg/cmd/template/cmd_data_values_file_test.go
index 9ab260b9c..c6456272b 100644
--- a/pkg/cmd/template/cmd_data_values_file_test.go
+++ b/pkg/cmd/template/cmd_data_values_file_test.go
@@ -81,7 +81,7 @@ array:
       map:
         a: 123
   array:
-  - str
+    - str
 `
 
 	filesToProcess := files.NewSortedFiles([]*files.File{
diff --git a/pkg/cmd/template/cmd_library_module_test.go b/pkg/cmd/template/cmd_library_module_test.go
index cf71e3c82..b5982e5b1 100644
--- a/pkg/cmd/template/cmd_library_module_test.go
+++ b/pkg/cmd/template/cmd_library_module_test.go
@@ -367,9 +367,9 @@ int: 100`)
 #@ def vals(arg1): return [arg1, data.values]`)
 
 	expectedYAMLTplData := `vals:
-- arg1
-- int: 124
-  str: string
+  - arg1
+  - int: 124
+    str: string
 `
 
 	filesToProcess := files.NewSortedFiles([]*files.File{
diff --git a/pkg/cmd/template/cmd_overlays_test.go b/pkg/cmd/template/cmd_overlays_test.go
index 16d74d20f..4038de4be 100644
--- a/pkg/cmd/template/cmd_overlays_test.go
+++ b/pkg/cmd/template/cmd_overlays_test.go
@@ -35,11 +35,11 @@ array:
 `)
 
 	expectedYAMLTplData := `array:
-- name: item1
-  subarray:
-  - item1
-  subarray2:
-  - yamlfunc: yamlfunc
+  - name: item1
+    subarray:
+      - item1
+    subarray2:
+      - yamlfunc: yamlfunc
 `
 
 	yamlFuncsData := []byte(`
@@ -100,9 +100,9 @@ array:
 	// subarray2 is not present because it was removed
 	// by overlay1 that comes after overlay2
 	expectedYAMLTplData := `array:
-- name: item1
-  subarray:
-  - item1
+  - name: item1
+    subarray:
+      - item1
 `
 
 	yamlFuncsData := []byte(`
diff --git a/pkg/cmd/template/cmd_test.go b/pkg/cmd/template/cmd_test.go
index 42539140c..13a2f0f3f 100644
--- a/pkg/cmd/template/cmd_test.go
+++ b/pkg/cmd/template/cmd_test.go
@@ -42,15 +42,14 @@ loaddata: #@ data.read("funcs/funcs.star")`)
   yamlfunc: yamlfunc
 textfunc: textfunc
 starfunc:
-- 1
-- 2
+  - 1
+  - 2
 listdata:
-- tpl.yml
-- funcs/funcs.lib.yml
-- funcs/funcs.lib.txt
-- funcs/funcs.star
+  - tpl.yml
+  - funcs/funcs.lib.yml
+  - funcs/funcs.lib.txt
+  - funcs/funcs.star
 loaddata: |2-
-
   def starfunc():
     return [1,2]
   end
@@ -100,16 +99,16 @@ nestedlist: #@ nested_data_list()
 nesteddata: #@ nested_data_read()`)
 
 	expectedYAMLTplData := `rootlist:
-- tpl.yml
-- funcs/funcs.lib.yml
-- funcs/data
+  - tpl.yml
+  - funcs/funcs.lib.yml
+  - funcs/data
 rootdata: |-
   data
   data
 nestedlist:
   list:
-  - funcs.lib.yml
-  - data
+    - funcs.lib.yml
+    - data
 nesteddata:
   data: |-
     data
@@ -169,19 +168,19 @@ nesteddata: #@ nested_data_read()
 `)
 
 	expectedYAMLTplData := `rootlist:
-- /tpl.yml
-- /funcs/funcs.lib.yml
-- /funcs/tpl.yml
-- /funcs/data
+  - /tpl.yml
+  - /funcs/funcs.lib.yml
+  - /funcs/tpl.yml
+  - /funcs/data
 rootdata: |-
   data
   data
 nestedlist:
   list:
-  - /tpl.yml
-  - /funcs/funcs.lib.yml
-  - /funcs/tpl.yml
-  - /funcs/data
+    - /tpl.yml
+    - /funcs/funcs.lib.yml
+    - /funcs/tpl.yml
+    - /funcs/data
 nesteddata:
   data: |-
     data
@@ -231,10 +230,10 @@ libdata: #@ lib_data_read()`)
 
 	expectedYAMLTplData := `liblist:
   liblist1:
-  - funcs.lib.yml
+    - funcs.lib.yml
   liblist2:
-  - /other
-  - /funcs/funcs.lib.yml
+    - /other
+    - /funcs/funcs.lib.yml
 libdata:
   libdata2: |-
     lib1
@@ -347,11 +346,11 @@ localstarfunc: #@ localstarfunc()`)
   yamlfunc: textfunc
 textfunc: textfunc
 starfunc:
-- 1
-- 2
+  - 1
+  - 2
 localstarfunc:
-- 3
-- 4
+  - 3
+  - 4
 `
 
 	yamlFuncsData := []byte(`
@@ -402,8 +401,8 @@ end`)
 
 func TestRelativeLoadInLibrariesForNonRootTemplates(t *testing.T) {
 	expectedYAMLTplData := `libstarfunc:
-- 1
-- 2
+  - 1
+  - 2
 `
 
 	nonTopLevelYmlTplData := []byte(`
@@ -543,29 +542,29 @@ func TestPlainYAMLNoTemplateProcessing(t *testing.T) {
 annotation: 5 #@ 1 + 2
 text_template: (@= "string" @)
 versions:
-- &version
-  name: v1alpha1
-  served: true
-- << : *version
-  name: v1beta1
-- << : *version
-  name: v1
-  storage: true
-- << : *version
+  - &version
+    name: v1alpha1
+    served: true
+  - << : *version
+    name: v1beta1
+  - << : *version
+    name: v1
+    storage: true
+  - << : *version
 `)
 
 		expectedYAMLTplData := `annotation: 5
 text_template: (@= "string" @)
 versions:
-- name: v1alpha1
-  served: true
-- name: v1beta1
-  served: true
-- name: v1
-  served: true
-  storage: true
-- name: v1alpha1
-  served: true
+  - name: v1alpha1
+    served: true
+  - name: v1beta1
+    served: true
+  - name: v1
+    served: true
+    storage: true
+  - name: v1alpha1
+    served: true
 `
 
 		filesToProcess := []*files.File{
diff --git a/pkg/cmd/template/regular_input.go b/pkg/cmd/template/regular_input.go
index 37df22572..28e5fccee 100644
--- a/pkg/cmd/template/regular_input.go
+++ b/pkg/cmd/template/regular_input.go
@@ -110,6 +110,7 @@ func (s *RegularFilesSource) Output(out Output) error {
 		}
 	}
 
+	// out.DocSet.Items[1].Comments = []*yamlmeta.Comment{{Data: "@ load(\"@ytt:overlay\", \"overlay\")"}, {Data: "@overlay/match by=overlay.all"}}
 	combinedDocBytes, err := out.DocSet.AsBytesWithPrinter(printerFunc)
 	if err != nil {
 		return fmt.Errorf("Marshaling combined template result: %s", err)
diff --git a/pkg/cmd/template/schema_author_test.go b/pkg/cmd/template/schema_author_test.go
index 1b698b98b..b263c2010 100644
--- a/pkg/cmd/template/schema_author_test.go
+++ b/pkg/cmd/template/schema_author_test.go
@@ -1157,13 +1157,13 @@ foo: #@ data.values.foo
 bar: #@ data.values.bar
 `
 			expected := `foo:
-- new
-- array
-- strings
+  - new
+  - array
+  - strings
 bar:
-- 1
-- 2
-- 3
+  - 1
+  - 2
+  - 3
 `
 
 			filesToProcess := files.NewSortedFiles([]*files.File{
@@ -1193,8 +1193,8 @@ databases: #@ data.values.databases
 users: #@ data.values.users
 `
 			expected := `databases:
-- name: null_db
-  host: ""
+  - name: null_db
+    host: ""
 users:
   admin: admin
   user: []
@@ -1221,8 +1221,8 @@ databases:
 databases: #@ data.values.databases
 `
 			expected := `databases:
-- name: default
-  host: localhost
+  - name: default
+    host: localhost
 `
 
 			filesToProcess := files.NewSortedFiles([]*files.File{
diff --git a/pkg/cmd/template/schema_consumer_test.go b/pkg/cmd/template/schema_consumer_test.go
index 66eab9971..caeb73b15 100644
--- a/pkg/cmd/template/schema_consumer_test.go
+++ b/pkg/cmd/template/schema_consumer_test.go
@@ -57,14 +57,14 @@ rendered: #@ data.values
 
 		expected := `rendered:
   db_conn:
-  - hostname: server.example.com
-    port: 5432
-    username: sa
-    password: changeme
-    metadata:
-      run: ./build.sh
-    timeout: 7.5
-    ttl: 1
+    - hostname: server.example.com
+      port: 5432
+      username: sa
+      password: changeme
+      metadata:
+        run: ./build.sh
+      timeout: 7.5
+      ttl: 1
   top_level: key
 `
 
@@ -91,8 +91,8 @@ rendered: #@ data.values
 rendered: #@ data.values
 `
 		expected := `rendered:
-- first
-- second
+  - first
+  - second
 `
 
 		filesToProcess := files.NewSortedFiles([]*files.File{
@@ -212,9 +212,9 @@ rendered: #@ data.values
 
 		expected := `rendered:
   db_conn:
-  - hostname: server.example.com
-    metadata:
-      run: ./build.sh
+    - hostname: server.example.com
+      metadata:
+        run: ./build.sh
   top_level: key
 `
 
@@ -952,12 +952,12 @@ vpc: #@ data.values.vpc
 			expected := `vpc:
   name: name value
   subnet_config:
-  - id: 2
-    mask: 255.255.0.0
-    private: true
-  - id: 3
-    mask: 255.255.255.0
-    private: true
+    - id: 2
+      mask: 255.255.0.0
+      private: true
+    - id: 3
+      mask: 255.255.255.0
+      private: true
 `
 
 			filesToProcess := files.NewSortedFiles([]*files.File{
@@ -985,7 +985,7 @@ clients:
 			dataValuesYAML := `#@data/values
 ---
 clients:
-- name: foo
+  - name: foo
 `
 			templateYAML := `#@ load("@ytt:data", "data")
 ---
@@ -994,10 +994,10 @@ rendered: #@ data.values
 
 			expected := `rendered:
   clients:
-  - name: foo
-    config:
-      args: []
-      options: null
+    - name: foo
+      config:
+        args: []
+        options: null
 `
 
 			filesToProcess := files.NewSortedFiles([]*files.File{
@@ -1162,8 +1162,8 @@ overriden: #@ data.values.overriden
   contains_array: null
 overriden:
   contains_array:
-  - a: 20
-    b: 0
+    - a: 20
+      b: 0
 `
 
 		filesToProcess := files.NewSortedFiles([]*files.File{
@@ -1194,10 +1194,10 @@ array:
 array: #@ data.values.array
 `
 		expected := `array:
-- one
-- null
-- two
-- null
+  - one
+  - null
+  - two
+  - null
 `
 
 		filesToProcess := files.NewSortedFiles([]*files.File{
@@ -1349,9 +1349,9 @@ foo: ["bar", 7, ~]
 foo: #@ data.values.foo
 `
 		expected := `foo:
-- bar
-- 7
-- null
+  - bar
+  - 7
+  - null
 `
 
 		filesToProcess := files.NewSortedFiles([]*files.File{
@@ -1376,9 +1376,9 @@ foo:
 foo: #@ data.values.foo
 `
 		expected := `foo:
-- bar:
-  - 1
-  - baz
+  - bar:
+      - 1
+      - baz
 `
 
 		filesToProcess := files.NewSortedFiles([]*files.File{
@@ -1454,11 +1454,11 @@ baz: #@ data.values.baz
 		expected := `foo:
   ball: red
 bar:
-- newMap:
-  - ""
-  - 8
+  - newMap:
+      - ""
+      - 8
 baz:
-- newArray: foobar
+  - newArray: foobar
 `
 
 		filesToProcess := files.NewSortedFiles([]*files.File{
@@ -1756,8 +1756,8 @@ bar: from_library_schema
 foo: from_library_dv
 `)
 		expectedYAMLTplData := `key:
-- from_library_schema
-- from_library_dv
+  - from_library_schema
+  - from_library_dv
 `
 
 		filesToProcess := files.NewSortedFiles([]*files.File{
diff --git a/pkg/cmd/template/schema_inspect_test.go b/pkg/cmd/template/schema_inspect_test.go
index 53839439e..2836a0c2c 100644
--- a/pkg/cmd/template/schema_inspect_test.go
+++ b/pkg/cmd/template/schema_inspect_test.go
@@ -152,9 +152,9 @@ components:
                 type: integer
                 default: 0
               default:
-              - 1
-              - 2
-              - 3
+                - 1
+                - 2
+                - 3
             array_of_maps:
               type: array
               items:
@@ -168,12 +168,12 @@ components:
                     type: string
                     default: default
               default:
-              - bar: thing 1
-                ree: default
-              - bar: thing 2
-                ree: default
-              - bar: thing 3
-                ree: default
+                - bar: thing 1
+                  ree: default
+                - bar: thing 2
+                  ree: default
+                - bar: thing 3
+                  ree: default
 `
 
 		filesToProcess := files.NewSortedFiles([]*files.File{
@@ -308,10 +308,10 @@ components:
         foo:
           int_key: 0
           array_of_scalars:
-          - ""
+            - ""
           array_of_maps:
-          - foo: ""
-            bar: ""
+            - foo: ""
+              bar: ""
 `
 			filesToProcess := files.NewSortedFiles([]*files.File{
 				files.MustNewFileFromSource(files.NewBytesSource("schema.yml", []byte(schemaYAML))),
@@ -351,10 +351,10 @@ components:
           default:
             int_key: 0
             array_of_scalars:
-            - ""
+              - ""
             array_of_maps:
-            - foo: ""
-              bar: ""
+              - foo: ""
+                bar: ""
 `
 			filesToProcess := files.NewSortedFiles([]*files.File{
 				files.MustNewFileFromSource(files.NewBytesSource("schema.yml", []byte(schemaYAML))),
@@ -508,9 +508,9 @@ components:
                 type: integer
                 default: 0
               default:
-              - 1
-              - 2
-              - 3
+                - 1
+                - 2
+                - 3
             array_of_maps:
               type: array
               nullable: true
@@ -527,12 +527,12 @@ components:
                     nullable: true
                     default: null
               default:
-              - bar: thing 1
-                ree: null
-              - bar: thing 2
-                ree: null
-              - bar: thing 3
-                ree: null
+                - bar: thing 1
+                  ree: null
+                - bar: thing 2
+                  ree: null
+                - bar: thing 3
+                  ree: null
 `
 
 		filesToProcess := files.NewSortedFiles([]*files.File{
@@ -798,21 +798,21 @@ components:
       x-example-description: schema example description
       example:
         db_conn:
-        - hostname: localhost
-          port: 8080
-          timeout: 4.2
-          any_key: anything
-          null_key: null
-      properties:
-        db_conn:
-          type: array
-          x-example-description: db_conn example description
-          example:
           - hostname: localhost
             port: 8080
             timeout: 4.2
             any_key: anything
             null_key: null
+      properties:
+        db_conn:
+          type: array
+          x-example-description: db_conn example description
+          example:
+            - hostname: localhost
+              port: 8080
+              timeout: 4.2
+              any_key: anything
+              null_key: null
           items:
             type: object
             additionalProperties: false
diff --git a/pkg/yamlmeta/convert.go b/pkg/yamlmeta/convert.go
index 73399b593..95d76cd96 100644
--- a/pkg/yamlmeta/convert.go
+++ b/pkg/yamlmeta/convert.go
@@ -5,10 +5,12 @@ package yamlmeta
 
 import (
 	"fmt"
+	"strings"
 
 	"github.com/vmware-tanzu/carvel-ytt/pkg/filepos"
 	"github.com/vmware-tanzu/carvel-ytt/pkg/orderedmap"
 	"github.com/vmware-tanzu/carvel-ytt/pkg/yamlmeta/internal/yaml.v2"
+	yaml3 "gopkg.in/yaml.v3"
 )
 
 func NewASTFromInterface(val interface{}) interface{} {
@@ -27,6 +29,76 @@ func NewGoFromAST(val interface{}) interface{} {
 	return convertToGo(val)
 }
 
+func convertToYAML3Node(val interface{}) *yaml3.Node {
+	switch typedVal := val.(type) {
+	case *Document:
+		// head, inline := convertYAML3Comments(typedVal)
+		return &yaml3.Node{
+			Kind:    yaml3.DocumentNode,
+			Content: []*yaml3.Node{convertToYAML3Node(typedVal.Value)},
+			// HeadComment: head.String(),
+			// LineComment: inline.String(),
+		}
+	case *Map:
+		yamlMap := &yaml3.Node{Kind: yaml3.MappingNode}
+		for _, item := range typedVal.Items {
+			key := convertToYAML3Node(item.Key)
+			value := convertToYAML3Node(item.Value)
+			yamlMap.Content = append(yamlMap.Content, key, value)
+		}
+		return yamlMap
+	case *orderedmap.Map:
+		yamlMap := &yaml3.Node{Kind: yaml3.MappingNode}
+		typedVal.Iterate(func(k, v interface{}) {
+			key := convertToYAML3Node(k)
+			value := convertToYAML3Node(v)
+			yamlMap.Content = append(yamlMap.Content, key, value)
+		})
+		return yamlMap
+	case *Array:
+		yamlArray := &yaml3.Node{Kind: yaml3.SequenceNode}
+		for _, item := range typedVal.Items {
+			yamlArray.Content = append(yamlArray.Content, convertToYAML3Node(item.Value))
+		}
+		return yamlArray
+	case []interface{}:
+		yamlArray := &yaml3.Node{Kind: yaml3.SequenceNode}
+		for _, item := range typedVal {
+			yamlArray.Content = append(yamlArray.Content, convertToYAML3Node(item))
+		}
+		return yamlArray
+	case bool:
+		return &yaml3.Node{Kind: yaml3.ScalarNode, Value: fmt.Sprintf("%t", val)}
+	case int, int32, int64, uint, uint32, uint64:
+		return &yaml3.Node{Kind: yaml3.ScalarNode, Value: fmt.Sprintf("%d", val)}
+	case float32, float64:
+		return &yaml3.Node{Kind: yaml3.ScalarNode, Value: fmt.Sprintf("%g", val)}
+	case nil:
+		return &yaml3.Node{Kind: yaml3.ScalarNode, Value: "null"}
+	case string:
+		if val == "" {
+			return &yaml3.Node{Kind: yaml3.ScalarNode, Value: "", Style: yaml3.DoubleQuotedStyle}
+		} else {
+			return &yaml3.Node{Kind: yaml3.ScalarNode, Value: fmt.Sprintf("%s", val), Tag: "!!str"}
+		}
+	default:
+		panic(fmt.Sprintf("Unexpected type %T = %#v", val, val))
+	}
+}
+
+func convertYAML3Comments(typedVal Node) (strings.Builder, strings.Builder) {
+	head := strings.Builder{}
+	inline := strings.Builder{}
+	for _, comment := range typedVal.GetComments() {
+		if comment.Position.IsNextTo(typedVal.GetPosition()) {
+			inline.WriteString(comment.Data)
+		} else {
+			head.WriteString(comment.Data)
+		}
+	}
+	return head, inline
+}
+
 func convertToLowYAML(val interface{}) interface{} {
 	switch typedVal := val.(type) {
 	case map[interface{}]interface{}:
diff --git a/pkg/yamlmeta/document.go b/pkg/yamlmeta/document.go
index 0e2064572..a4d7a80cf 100644
--- a/pkg/yamlmeta/document.go
+++ b/pkg/yamlmeta/document.go
@@ -4,7 +4,9 @@
 package yamlmeta
 
 import (
-	"github.com/vmware-tanzu/carvel-ytt/pkg/yamlmeta/internal/yaml.v2"
+	"bytes"
+
+	yaml3 "gopkg.in/yaml.v3"
 )
 
 func (d *Document) IsEmpty() bool {
@@ -22,7 +24,22 @@ func (d *Document) IsEmpty() bool {
 }
 
 func (d *Document) AsYAMLBytes() ([]byte, error) {
-	return yaml.Marshal(convertToLowYAML(convertToGo(d.Value)))
+	out := bytes.Buffer{}
+	// TODO: re-enable including comments after all tests are verified working, as is.
+	// if len(d.Comments) > 0 {
+	// 	for _, comment := range d.Comments {
+	// 		out.WriteString(fmt.Sprintf("#%s\n", comment.Data))
+	// 	}
+	// 	out.WriteString("---\n")
+	// }
+
+	encoder := yaml3.NewEncoder(&out)
+	encoder.SetIndent(2)
+	err := encoder.Encode(convertToYAML3Node(d))
+	if err != nil {
+		return nil, err
+	}
+	return out.Bytes(), nil
 }
 
 func (d *Document) AsInterface() interface{} {
diff --git a/pkg/yamltemplate/filetests/annotation-for.tpltest b/pkg/yamltemplate/filetests/annotation-for.tpltest
index a382a2a17..92ebde6e1 100644
--- a/pkg/yamltemplate/filetests/annotation-for.tpltest
+++ b/pkg/yamltemplate/filetests/annotation-for.tpltest
@@ -16,13 +16,13 @@ test2:
 +++
 
 test1:
-- 0
-- 1
-- 1
-- 2
-- 2
-- 3
+  - 0
+  - 1
+  - 1
+  - 2
+  - 2
+  - 3
 test2:
-- 0
-- 1
-- 2
+  - 0
+  - 1
+  - 2
diff --git a/pkg/yamltemplate/filetests/datatypes.tpltest b/pkg/yamltemplate/filetests/datatypes.tpltest
index 75b59caf5..a7ad84dfa 100644
--- a/pkg/yamltemplate/filetests/datatypes.tpltest
+++ b/pkg/yamltemplate/filetests/datatypes.tpltest
@@ -32,6 +32,6 @@ metadata:
     map:
       a: 123
     list:
-    - a
-    - 123
-    - a: 123
+      - a
+      - 123
+      - a: 123
diff --git a/pkg/yamltemplate/filetests/def-across-docs.tpltest b/pkg/yamltemplate/filetests/def-across-docs.tpltest
index ac966a810..23e609c39 100644
--- a/pkg/yamltemplate/filetests/def-across-docs.tpltest
+++ b/pkg/yamltemplate/filetests/def-across-docs.tpltest
@@ -12,5 +12,5 @@ test1: #@ tpl()
 array: []
 ---
 test1:
-- item1
-- item2
+  - item1
+  - item2
diff --git a/pkg/yamltemplate/filetests/def-recursive.tpltest b/pkg/yamltemplate/filetests/def-recursive.tpltest
index 53ba9427f..14a73f6d7 100644
--- a/pkg/yamltemplate/filetests/def-recursive.tpltest
+++ b/pkg/yamltemplate/filetests/def-recursive.tpltest
@@ -18,9 +18,9 @@ test:
 +++
 
 test:
-- label1: 123
-  label2: 124
-  label3: 12
-  label4: 13
-- label3: 12
-  label4: 13
+  - label1: 123
+    label2: 124
+    label3: 12
+    label4: 13
+  - label3: 12
+    label4: 13
diff --git a/pkg/yamltemplate/filetests/def-return.tpltest b/pkg/yamltemplate/filetests/def-return.tpltest
index 74a037674..30be7ccd4 100644
--- a/pkg/yamltemplate/filetests/def-return.tpltest
+++ b/pkg/yamltemplate/filetests/def-return.tpltest
@@ -34,8 +34,8 @@ test:
 +++
 
 test:
-- label1: 123
-- label3: 12
-  label4: 13
-- a: 123
-- label1: 123
+  - label1: 123
+  - label3: 12
+    label4: 13
+  - a: 123
+  - label1: 123
diff --git a/pkg/yamltemplate/filetests/def.tpltest b/pkg/yamltemplate/filetests/def.tpltest
index cb6945ac8..d3152ec16 100644
--- a/pkg/yamltemplate/filetests/def.tpltest
+++ b/pkg/yamltemplate/filetests/def.tpltest
@@ -33,8 +33,8 @@ parent1:
     label3: 12
     label4: 13
 parent2:
-- label1: 123
-  label2: 124
-- label3: 12
-  label4: 13
+  - label1: 123
+    label2: 124
+  - label3: 12
+    label4: 13
 parent3: 123
diff --git a/pkg/yamltemplate/filetests/for-break.tpltest b/pkg/yamltemplate/filetests/for-break.tpltest
index a75f4abe6..469ea14d0 100644
--- a/pkg/yamltemplate/filetests/for-break.tpltest
+++ b/pkg/yamltemplate/filetests/for-break.tpltest
@@ -27,7 +27,7 @@ kind: Deployment
 metadata:
   labels:
     array:
-    - i: 0
+      - i: 0
     another:
-    - i: 1
-    - i: 2
+      - i: 1
+      - i: 2
diff --git a/pkg/yamltemplate/filetests/for-continue.tpltest b/pkg/yamltemplate/filetests/for-continue.tpltest
index 32b90ae7d..1f06ea70e 100644
--- a/pkg/yamltemplate/filetests/for-continue.tpltest
+++ b/pkg/yamltemplate/filetests/for-continue.tpltest
@@ -17,5 +17,5 @@ kind: Deployment
 metadata:
   labels:
     array:
-    - i: 0
-    - i: 2
+      - i: 0
+      - i: 2
diff --git a/pkg/yamltemplate/filetests/for.tpltest b/pkg/yamltemplate/filetests/for.tpltest
index 8fcf178ea..42534cc73 100644
--- a/pkg/yamltemplate/filetests/for.tpltest
+++ b/pkg/yamltemplate/filetests/for.tpltest
@@ -15,9 +15,9 @@ kind: Deployment
 metadata:
   labels:
     array:
-    - 0
-    - 1
-    - 1
-    - 2
-    - 2
-    - 3
+      - 0
+      - 1
+      - 1
+      - 2
+      - 2
+      - 3
diff --git a/pkg/yamltemplate/filetests/fragment/array.tpltest b/pkg/yamltemplate/filetests/fragment/array.tpltest
index b04de76f5..af0f23657 100644
--- a/pkg/yamltemplate/filetests/fragment/array.tpltest
+++ b/pkg/yamltemplate/filetests/fragment/array.tpltest
@@ -28,21 +28,21 @@ test6a: #@ 3 in array()
 +++
 
 test1:
-- str
-- string
-- true
+  - str
+  - string
+  - true
 test2:
-- 123
-- int
-- true
+  - 123
+  - int
+  - true
 test3:
-- key: 123
-- yamlfragment
-- false
+  - key: 123
+  - yamlfragment
+  - false
 test4:
-- str
-- 123
-- key: 123
+  - str
+  - 123
+  - key: 123
 test5: 3
 test6: true
 test6a: false
diff --git a/pkg/yamltemplate/filetests/fragment/docset.tpltest b/pkg/yamltemplate/filetests/fragment/docset.tpltest
index 6927c7ab3..9eee85072 100644
--- a/pkg/yamltemplate/filetests/fragment/docset.tpltest
+++ b/pkg/yamltemplate/filetests/fragment/docset.tpltest
@@ -33,17 +33,17 @@ test6a: #@ 3 in docs()
 +++
 
 test1:
-- str
-- string
-- true
+  - str
+  - string
+  - true
 test2:
-- 123
-- int
-- true
+  - 123
+  - int
+  - true
 test3:
-- key: 123
-- yamlfragment
-- false
+  - key: 123
+  - yamlfragment
+  - false
 ---
 test4
 ---
diff --git a/pkg/yamltemplate/filetests/fragment/map.tpltest b/pkg/yamltemplate/filetests/fragment/map.tpltest
index 1b585502e..87f9a97ca 100644
--- a/pkg/yamltemplate/filetests/fragment/map.tpltest
+++ b/pkg/yamltemplate/filetests/fragment/map.tpltest
@@ -36,26 +36,26 @@ test7a: #@ "test3" in map()
 +++
 
 test1:
-- str
-- string
-- true
+  - str
+  - string
+  - true
 test2:
-- sub_key: 123
-- yamlfragment
-- false
+  - sub_key: 123
+  - yamlfragment
+  - false
 test3:
-- 123
-- int
-- true
+  - 123
+  - int
+  - true
 test4:
-- key: test1
-  value: str
-- key: test2
-  value:
-    sub_key: 123
+  - key: test1
+    value: str
+  - key: test2
+    value:
+      sub_key: 123
 test5:
-- str
-- sub_key: 123
+  - str
+  - sub_key: 123
 test5a:
   test1: str
   test2:
diff --git a/pkg/yamltemplate/filetests/if.tpltest b/pkg/yamltemplate/filetests/if.tpltest
index 3600dd805..19aa56370 100644
--- a/pkg/yamltemplate/filetests/if.tpltest
+++ b/pkg/yamltemplate/filetests/if.tpltest
@@ -39,7 +39,7 @@ metadata:
       t: 456
       t2: 456
 test2:
-- item1
-- item2
+  - item1
+  - item2
 test3:
-- item2
+  - item2
diff --git a/pkg/yamltemplate/filetests/node-sugar/node-for-nested.tpltest b/pkg/yamltemplate/filetests/node-sugar/node-for-nested.tpltest
index 8ce186c25..531a92384 100644
--- a/pkg/yamltemplate/filetests/node-sugar/node-for-nested.tpltest
+++ b/pkg/yamltemplate/filetests/node-sugar/node-for-nested.tpltest
@@ -28,30 +28,30 @@ kind: Deployment
 metadata:
   labels:
     array1:
-    - nested:
-      - 0
-      - 1
-      - 2
-    - nested:
-      - 0
-      - 1
-      - 2
-    - nested:
-      - 0
-      - 1
-      - 2
+      - nested:
+          - 0
+          - 1
+          - 2
+      - nested:
+          - 0
+          - 1
+          - 2
+      - nested:
+          - 0
+          - 1
+          - 2
     array2:
-    - 0,0
-    - 0,1
-    - 0,2
-    - 1,0
-    - 1,1
-    - 1,2
-    - 2,0
-    - 2,1
-    - 2,2
+      - 0,0
+      - 0,1
+      - 0,2
+      - 1,0
+      - 1,1
+      - 1,2
+      - 2,0
+      - 2,1
+      - 2,2
     array3:
-    - 0,0
-    - 0,1
-    - 1,0
-    - 1,1
+      - 0,0
+      - 0,1
+      - 1,0
+      - 1,1
diff --git a/pkg/yamltemplate/filetests/node-sugar/node-for.tpltest b/pkg/yamltemplate/filetests/node-sugar/node-for.tpltest
index 559c75b04..2152c60ae 100644
--- a/pkg/yamltemplate/filetests/node-sugar/node-for.tpltest
+++ b/pkg/yamltemplate/filetests/node-sugar/node-for.tpltest
@@ -13,6 +13,6 @@ kind: Deployment
 metadata:
   labels:
     array:
-    - 0
-    - 1
-    - 2
+      - 0
+      - 1
+      - 2
diff --git a/pkg/yamltemplate/filetests/yaml-map-item-in-array-item.tpltest b/pkg/yamltemplate/filetests/yaml-map-item-in-array-item.tpltest
index 551657c87..349abff35 100644
--- a/pkg/yamltemplate/filetests/yaml-map-item-in-array-item.tpltest
+++ b/pkg/yamltemplate/filetests/yaml-map-item-in-array-item.tpltest
@@ -52,18 +52,18 @@ test5:
 +++
 
 test1:
-- value
+  - value
 test1a:
-- value
+  - value
 test2:
-- value
+  - value
 test3:
-- key: value
+  - key: value
 test4:
-- key: valuea
-- key: valueb
-- key: valueb
-- {}
+  - key: valuea
+  - key: valueb
+  - key: valueb
+  - {}
 test5:
-- key: a
-- {}
+  - key: a
+  - {}
diff --git a/pkg/yamltemplate/filetests/ytt-library/assert/assert-try-to.tpltest b/pkg/yamltemplate/filetests/ytt-library/assert/assert-try-to.tpltest
index 464f7bff3..1fef59295 100644
--- a/pkg/yamltemplate/filetests/ytt-library/assert/assert-try-to.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/assert/assert-try-to.tpltest
@@ -44,12 +44,12 @@ test_try_to_succeed_tuple: #@ try_to_succeed_tuple()
 +++
 
 test_try_to_fail_data_error:
-- null
-- 'json.decode: invalid character ''}'' looking for beginning of value'
+  - null
+  - 'json.decode: invalid character ''}'' looking for beginning of value'
 test_try_to_fail_bad_ref: NoneType has no .foo field or method
 test_try_to_succeed_lambda:
   ytt: rules
 test_try_to_succeed_function: foo
 test_try_to_succeed_tuple:
-- 1
-- 2
+  - 1
+  - 2
diff --git a/pkg/yamltemplate/filetests/ytt-library/data-values-struct.tpltest b/pkg/yamltemplate/filetests/ytt-library/data-values-struct.tpltest
index 324eb447c..0f39df0d5 100644
--- a/pkg/yamltemplate/filetests/ytt-library/data-values-struct.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/data-values-struct.tpltest
@@ -43,38 +43,38 @@ test1:
   map:
     a: 123
   list:
-  - a
-  - 123
-  - a: 123
+    - a
+    - 123
+    - a: 123
 test2:
   a: 123
 test3:
-- a
-- 123
-- a: 123
+  - a
+  - 123
+  - a: 123
 test4:
-- value: a
-- value: 123
-- value:
-    a: 123
+  - value: a
+  - value: 123
+  - value:
+      a: 123
 test5:
-- key: a
-  value: 123
+  - key: a
+    value: 123
 is_mapping:
   test1: 123
   test2: 123
   test3: 123
 is_iterable:
   test1:
-  - int = 123
-  - intNeg = -49
-  - float = 123.123
-  - t = True
-  - f = False
-  - nullz = None
-  - string = string
-  - map = struct(...)
-  - list = ["a", 123, struct(...)]
+    - int = 123
+    - intNeg = -49
+    - float = 123.123
+    - t = True
+    - f = False
+    - nullz = None
+    - string = string
+    - map = struct(...)
+    - list = ["a", 123, struct(...)]
 is_sequence:
   test1: 9
   test2: 1
diff --git a/pkg/yamltemplate/filetests/ytt-library/data-values.tpltest b/pkg/yamltemplate/filetests/ytt-library/data-values.tpltest
index b460b9a36..937d4860d 100644
--- a/pkg/yamltemplate/filetests/ytt-library/data-values.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/data-values.tpltest
@@ -35,10 +35,10 @@ metadata:
     map:
       a: 123
     list:
-    - a
-    - 123
-    - a: 123
+      - a
+      - 123
+      - a: 123
     list_for:
-    - a
-    - 123
-    - a: 123
+      - a
+      - 123
+      - a: 123
diff --git a/pkg/yamltemplate/filetests/ytt-library/json.tpltest b/pkg/yamltemplate/filetests/ytt-library/json.tpltest
index 3e09c2fb2..2a2a254d4 100644
--- a/pkg/yamltemplate/filetests/ytt-library/json.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/json.tpltest
@@ -44,8 +44,8 @@ decode:
   test1: {}
   test2:
     a:
-    - 1
-    - 2
-    - 3
-    - c: 456
+      - 1
+      - 2
+      - 3
+      - c: 456
     b: str
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/append-to-array.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/append-to-array.tpltest
index 4797e4b58..5b20e9b48 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/append-to-array.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/append-to-array.tpltest
@@ -35,12 +35,12 @@ test2: #@ overlay.apply(test2_left(), test2_right())
 +++
 
 test1:
-- item1
-- item2
-- item3
+  - item1
+  - item2
+  - item3
 ---
 test2:
   list1:
-  - item1
+    - item1
   list2:
-  - item1
+    - item1
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/array-by-key.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/array-by-key.tpltest
index 29fbc1858..56f8cf1e3 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/array-by-key.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/array-by-key.tpltest
@@ -43,15 +43,15 @@ test2
 test1
 ---
 clients:
-- secret: ree
-- secret: bar
-  needsSecret: false
-- secret: ree
+  - secret: ree
+  - secret: bar
+    needsSecret: false
+  - secret: ree
 ---
 test2
 ---
 clients:
-- secret: ree
-- secret: bar
-  needsSecret: false
-- secret: ree
+  - secret: ree
+  - secret: bar
+    needsSecret: false
+  - secret: ree
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/assert-nested.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/assert-nested.tpltest
index 027e05d12..d90d9af7c 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/assert-nested.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/assert-nested.tpltest
@@ -46,13 +46,13 @@ test1:
     key2a:
       key2aa: val2
     keys:
-    - 1
-    - 2
+      - 1
+      - 2
 test2:
   key1:
     key1a: val1
     key2a:
       key2aa: val2
     keys:
-    - 1
-    - 2
+      - 1
+      - 2
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/assert.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/assert.tpltest
index dd70bf38b..a68d0f652 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/assert.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/assert.tpltest
@@ -91,12 +91,12 @@ test1b:
     key2: true
     key3: string
     key4:
-    - abc
-    - null
+      - abc
+      - null
 ---
 test2:
-- val1
-- val11
+  - val1
+  - val11
 ---
 val1
 ---
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/doc-subset.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/doc-subset.tpltest
index c8b02232b..8ddac0b13 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/doc-subset.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/doc-subset.tpltest
@@ -111,13 +111,13 @@ test1
 metadata:
   name: test1
 key1:
-- name: foo
+  - name: foo
 ---
 metadata:
   name: test1
   other: key
 key1:
-- name: foo
+  - name: foo
 ---
 metadata:
   other: key
@@ -125,18 +125,18 @@ metadata:
 test2
 ---
 metadata:
-- name: test2
+  - name: test2
 key1:
-- name: foo
+  - name: foo
 ---
 metadata:
-- name: test2
-- other: key
+  - name: test2
+  - other: key
 key1:
-- name: foo
+  - name: foo
 ---
 metadata:
-- other: key
+  - other: key
 ---
 test3
 ---
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/insert-into-array.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/insert-into-array.tpltest
index 99e33a1bb..b3b36d7d0 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/insert-into-array.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/insert-into-array.tpltest
@@ -43,18 +43,18 @@ test1: #@ overlay.apply(test1_left(), test1_right())
 +++
 
 test1:
-- for_item: 1
-  before: true
-- item: 1
-- for_item: 1
-  after: true
-- for_item: 2
-  before: true
-- item: 2
-- for_item: 2
-  after: true
-- for_item: 3
-  before: true
-- item: 3
-- for_item: 3
-  after: true
+  - for_item: 1
+    before: true
+  - item: 1
+  - for_item: 1
+    after: true
+  - for_item: 2
+    before: true
+  - item: 2
+  - for_item: 2
+    after: true
+  - for_item: 3
+    before: true
+  - item: 3
+  - for_item: 3
+    after: true
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/logical-ops.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/logical-ops.tpltest
index 3f4f3e611..6f6a3454a 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/logical-ops.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/logical-ops.tpltest
@@ -59,36 +59,36 @@ test3a: #@ overlay.apply(test_left(), test3a_right())
 +++
 
 test1:
-- name: first
-- name: second
-- name: third
-- found: true
+  - name: first
+  - name: second
+  - name: third
+  - found: true
 test1a:
-- name: first
-  found: true
-- name: second
-- name: third
+  - name: first
+    found: true
+  - name: second
+  - name: third
 test1b:
-- name: first
-  found: true
-- name: second
-  found: true
-- name: third
-  found: true
+  - name: first
+    found: true
+  - name: second
+    found: true
+  - name: third
+    found: true
 test2:
-- name: first
-  found: true
-- name: second
-- name: third
-  found: true
+  - name: first
+    found: true
+  - name: second
+  - name: third
+    found: true
 test3:
-- name: first
-- name: second
-  found: true
-- name: third
-  found: true
+  - name: first
+  - name: second
+    found: true
+  - name: third
+    found: true
 test3a:
-- name: first
-- name: second
-- name: third
-- found: true
+  - name: first
+  - name: second
+  - name: third
+  - found: true
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/match-child-defaults.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/match-child-defaults.tpltest
index f59ec7945..aa2e5adc8 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/match-child-defaults.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/match-child-defaults.tpltest
@@ -92,15 +92,15 @@ test1:
 ---
 test2:
   key2:
-  - name: val1
-  - name: val2
-  - name: val3
-  - name: val4
-  - name: val5
+    - name: val1
+    - name: val2
+    - name: val3
+    - name: val4
+    - name: val5
 ---
 key2:
-- name: val1
-- name: val3
+  - name: val1
+  - name: val3
 ---
 key3:
-- name: val3
+  - name: val3
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/merge-over-nil.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/merge-over-nil.tpltest
index 61b17610a..82e2c076e 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/merge-over-nil.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/merge-over-nil.tpltest
@@ -50,6 +50,6 @@ test1:
     bar: 42
 ---
 test2:
-- - bar 42
+  - - bar 42
 ---
 test3: foo bar
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/overlay.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/overlay.tpltest
index fa4fbdebd..8031ca926 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/overlay.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/overlay.tpltest
@@ -95,20 +95,20 @@ test2:
   key2: val2
 test3:
   key1:
-  - item1
-  - item3
+    - item1
+    - item3
 test3a:
   key1:
-  - item3
-  - item3
+    - item3
+    - item3
 test4:
   key1:
-  - item4
-  - item4
+    - item4
+    - item4
   key2: []
 test5:
   key1:
-  - name: blah
-  - name: foo
-    other: key
-  - name: foo2
+    - name: blah
+    - name: foo
+      other: key
+    - name: foo2
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/replace-func.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/replace-func.tpltest
index 5a9dcd3c0..eb760aa5a 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/replace-func.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/replace-func.tpltest
@@ -82,8 +82,8 @@ test1b:
   key1: val1val2
 ---
 test2:
-- prefix-val1-val2
-- prefix-val11-val2
+  - prefix-val1-val2
+  - prefix-val11-val2
 ---
 test3-prefix-val1-val2
 ---
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/replace-or-add.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/replace-or-add.tpltest
index 49429f16e..b32a618b2 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/replace-or-add.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/replace-or-add.tpltest
@@ -65,13 +65,13 @@ test1:
 test1a:
   key1: val1
   key2:
-  - null
-  - val2
+    - null
+    - val2
 ---
 test2:
-- val1
-- val11
-- val2
+  - val1
+  - val11
+  - val2
 ---
 val1
 ---
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/required-nested.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/required-nested.tpltest
index db2d2f73f..c303533e0 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/required-nested.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/required-nested.tpltest
@@ -41,8 +41,8 @@ test1:
     key1: val1
     key2: val2
   key2:
-  - name: foo
-    other: key
+    - name: foo
+      other: key
 test2:
   key1:
     key1: val1
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/when.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/when.tpltest
index fcd8d1bc6..53d4d97de 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/when.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/when.tpltest
@@ -105,11 +105,11 @@ test1:
     input_func: func
     input_list: list
   array:
-  - input_string
+    - input_string
   array2:
-  - input_int
+    - input_int
   array3:
-  - input_func
+    - input_func
 ---
 input_string: string
 input_int: int
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/yaml-array-over-yaml-map.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/yaml-array-over-yaml-map.tpltest
index 2ce35f61e..40c65967c 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/yaml-array-over-yaml-map.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/yaml-array-over-yaml-map.tpltest
@@ -19,5 +19,5 @@ test1: #@ overlay.apply(test1_left(), test1_right())
 
 test1:
   key1:
-  - name: foo
-    other: key
+    - name: foo
+      other: key
diff --git a/pkg/yamltemplate/filetests/ytt-library/overlay/yaml-over-map.tpltest b/pkg/yamltemplate/filetests/ytt-library/overlay/yaml-over-map.tpltest
index f59f7d1c8..cc1cfee77 100644
--- a/pkg/yamltemplate/filetests/ytt-library/overlay/yaml-over-map.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/overlay/yaml-over-map.tpltest
@@ -18,6 +18,6 @@ test1: #@ overlay.apply(test1_left(), test1_right())
 
 test1:
   key1:
-  - name: foo
-    another: key
-    other: key
+    - name: foo
+      another: key
+      other: key
diff --git a/pkg/yamltemplate/filetests/ytt-library/struct-sort.tpltest b/pkg/yamltemplate/filetests/ytt-library/struct-sort.tpltest
index f12d81858..3d117e754 100644
--- a/pkg/yamltemplate/filetests/ytt-library/struct-sort.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/struct-sort.tpltest
@@ -7,9 +7,9 @@ test1: #@ struct.decode(struct.make(a=[1,2,3], b="str", c=struct.make(d=123)))
 
 test1:
   a:
-  - 1
-  - 2
-  - 3
+    - 1
+    - 2
+    - 3
   b: str
   c:
     d: 123
diff --git a/pkg/yamltemplate/filetests/ytt-library/struct.tpltest b/pkg/yamltemplate/filetests/ytt-library/struct.tpltest
index 813e04091..65181e19b 100644
--- a/pkg/yamltemplate/filetests/ytt-library/struct.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/struct.tpltest
@@ -106,10 +106,10 @@ make_and_bind:
 ---
 encode:
   test1:
-  - 1
-  - 2
-  - 3
-  - c: 456
+    - 1
+    - 2
+    - 3
+    - c: 456
   test2: str
   test3: 123
   is_mapping:
@@ -120,30 +120,30 @@ encode:
     test5: true
   is_iterable:
     test1:
-    - a = [1, 2, 3, struct(...)]
-    - b = str
-    - c = struct(...)
+      - a = [1, 2, 3, struct(...)]
+      - b = str
+      - c = struct(...)
     test2:
-    - a = [1, 2, 3, struct(...)]
-    - b = str
-    - c = struct(...)
+      - a = [1, 2, 3, struct(...)]
+      - b = str
+      - c = struct(...)
   is_sequence:
     test1: 3
 ---
 decode:
   test1:
     a:
-    - 1
-    - 2
-    - 3
+      - 1
+      - 2
+      - 3
     b: str
     c:
       d: 123
   test2:
     a:
-    - 1
-    - 2
-    - 3
+      - 1
+      - 2
+      - 3
     b: str
     c:
       d: 123
diff --git a/pkg/yamltemplate/filetests/ytt-library/toml.tpltest b/pkg/yamltemplate/filetests/ytt-library/toml.tpltest
index 24b7a6f49..1a92cf79f 100644
--- a/pkg/yamltemplate/filetests/ytt-library/toml.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/toml.tpltest
@@ -59,10 +59,10 @@ decode:
   test1: {}
   test2:
     a:
-    - 1
-    - 2
-    - 3
-    - 456
+      - 1
+      - 2
+      - 3
+      - 456
     b: str
   test3:
     stuff:
diff --git a/pkg/yamltemplate/filetests/ytt-library/url/url.tpltest b/pkg/yamltemplate/filetests/ytt-library/url/url.tpltest
index 7e252f605..e7f0e3c7e 100644
--- a/pkg/yamltemplate/filetests/ytt-library/url/url.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/url/url.tpltest
@@ -36,11 +36,11 @@ query_params:
   test1: x=1&y=2&y=3&z=
   test2:
     x:
-    - "1"
-    "y":
-    - "2"
-    - "3"
+      - "1"
+    y:
+      - "2"
+      - "3"
     z:
-    - ""
+      - ""
   test3: ""
   test4: {}
diff --git a/pkg/yamltemplate/filetests/ytt-library/yaml.tpltest b/pkg/yamltemplate/filetests/ytt-library/yaml.tpltest
index dc45eb4c3..442b013c9 100644
--- a/pkg/yamltemplate/filetests/ytt-library/yaml.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-library/yaml.tpltest
@@ -54,28 +54,28 @@ test5
 
 test1: |
   a:
-  - 1
-  - 2
-  - 3
-  - c: 456
+    - 1
+    - 2
+    - 3
+    - c: 456
   b: str
 test1a: |
   fragment:
-  - piece1
-  - piece2: true
+    - piece1
+    - piece2: true
 test1b: |
   inside_map:
     fragment:
-    - piece1
-    - piece2: true
+      - piece1
+      - piece2: true
   inside_array:
-  - fragment:
-    - piece1
-    - piece2: true
+    - fragment:
+        - piece1
+        - piece2: true
 test1c: |
   fragment:
-  - piece1
-  - piece2: true
+    - piece1
+    - piece2: true
   ---
   doc2
 test2: |
@@ -83,10 +83,10 @@ test2: |
 test3: {}
 test4:
   a:
-  - 1
-  - 2
-  - 3
-  - c: 456
+    - 1
+    - 2
+    - 3
+    - c: 456
   b: str
 ---
 test5
diff --git a/pkg/yamltemplate/filetests/ytt-replace/array-item.tpltest b/pkg/yamltemplate/filetests/ytt-replace/array-item.tpltest
index f6474c6d7..2c0a73ec9 100644
--- a/pkg/yamltemplate/filetests/ytt-replace/array-item.tpltest
+++ b/pkg/yamltemplate/filetests/ytt-replace/array-item.tpltest
@@ -33,27 +33,27 @@ empty:
 +++
 
 start:
-- a: 123
-- b: 124
-- item1
-- item2
-- c: 126
+  - a: 123
+  - b: 124
+  - item1
+  - item2
+  - c: 126
 middle:
-- a: 127
-- b: 123
-- c: 124
-- test4: more-than-one-item
-- item1
-- item2
-- d: 126
+  - a: 127
+  - b: 123
+  - c: 124
+  - test4: more-than-one-item
+  - item1
+  - item2
+  - d: 126
 end:
-- a: 126
-- b: 123
-- c: 124
-- item1
-- item2
+  - a: 126
+  - b: 123
+  - c: 124
+  - item1
+  - item2
 empty:
-- b: 123
-- c: 124
-- item1
-- item2
+  - b: 123
+  - c: 124
+  - item1
+  - item2
diff --git a/test/e2e/e2e_test.go b/test/e2e/e2e_test.go
index 9938622e3..54b0eb180 100644
--- a/test/e2e/e2e_test.go
+++ b/test/e2e/e2e_test.go
@@ -290,13 +290,13 @@ float: 123.123
 		}
 		actualOutput := runYtt(t, testInputFiles{"../../examples/data-values/config.yml", "../../examples/data-values/values.yml"}, "", flags, envs)
 		expectedOutput := `nothing:
-- 1
-- 2
-- 3
+  - 1
+  - 2
+  - 3
 string:
-- 1
-- 2
-- 4
+  - 1
+  - 2
+  - 4
 bool: true
 int: 123
 float: 123.123
@@ -341,9 +341,9 @@ bool: true
 int: 123
 float: 123.123
 any:
-- 1
-- 2
-- 4
+  - 1
+  - 2
+  - 4
 `
 
 		require.Equal(t, expectedOutput, actualOutput)
@@ -369,9 +369,9 @@ bool: true
 int: 123
 float: 123.123
 any:
-- 1
-- 2
-- 4
+  - 1
+  - 2
+  - 4
 `
 
 		require.Equal(t, expectedOutput, actualOutput)
@@ -420,7 +420,7 @@ func TestDataValuesUsages(t *testing.T) {
 		expectedOutput := `app_config:
   version: "123"
   ports:
-  - 8080
+    - 8080
 `
 		require.Equal(t, expectedOutput, actualOutput)
 	})
@@ -430,7 +430,7 @@ func TestDataValuesUsages(t *testing.T) {
 		expectedOutput := `app_config:
   version: v1alpha1
   ports:
-  - 8080
+    - 8080
 `
 		require.Equal(t, expectedOutput, actualOutput)
 	})
@@ -440,7 +440,7 @@ func TestDataValuesUsages(t *testing.T) {
 		expectedOutput := `app_config:
   version: v1beta1
   ports:
-  - 8081
+    - 8081
 `
 		require.Equal(t, expectedOutput, actualOutput)
 	})
@@ -450,7 +450,7 @@ func TestDataValuesUsages(t *testing.T) {
 		expectedOutput := `app_config:
   version: v1
   ports:
-  - 80
+    - 80
 `
 		require.Equal(t, expectedOutput, actualOutput)
 	})