Add e2e tests to exercise formatting behavior (kptdev#1966)

* Add e2e tests to exercise formatting behavior

* code review

e2e/testdata/fn-render/format-on-success/.expected/diff.patch

@@ -0,0 +1,39 @@
+diff --git a/db/resources.yaml b/db/resources.yaml
+index e405a52..64ec0ee 100644
+--- a/db/resources.yaml
++++ b/db/resources.yaml
+@@ -15,5 +15,6 @@ apiVersion: apps/v1
+ kind: StatefulSet
+ metadata:
+   name: db
++  namespace: staging
+ spec:
+-    replicas: 3
++  replicas: 3
+diff --git a/resources.yaml b/resources.yaml
+index 71cb6e1..cb937aa 100644
+--- a/resources.yaml
++++ b/resources.yaml
+@@ -15,11 +15,12 @@ apiVersion: apps/v1
+ kind: Deployment
+ metadata:
+   name: nginx-deployment
++  namespace: staging
+ spec:
+   replicas: 3
+   selector:
+-      matchLabels:
+-        app: nginx
++    matchLabels:
++      app: nginx
+   template:
+     metadata:
+       labels:
+@@ -27,6 +28,6 @@ spec:
+     spec:
+       containers:
+         - name: nginx
++          image: nginx:1.14.2
+           ports:
+             - containerPort: 80
+-          image: nginx:1.14.2

e2e/testdata/fn-render/format-on-success/.krmignore

@@ -0,0 +1 @@
+.expected

e2e/testdata/fn-render/format-on-success/Kptfile

@@ -0,0 +1,9 @@
+apiVersion: kpt.dev/v1alpha2
+kind: Kptfile
+metadata:
+  name: app-with-db
+pipeline:
+  mutators:
+  - image: gcr.io/kpt-fn/set-namespace:unstable
+    configMap:
+      namespace: staging

e2e/testdata/fn-render/format-on-success/db/Kptfile

@@ -0,0 +1,9 @@
+apiVersion: kpt.dev/v1alpha2
+kind: Kptfile
+metadata:
+  name: db
+pipeline:
+  mutators:
+  - image: gcr.io/kpt-fn/set-namespace:unstable
+    configMap:
+      namespace: db

e2e/testdata/fn-render/format-on-success/db/resources.yaml

@@ -0,0 +1,19 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: db
+spec:
+    replicas: 3

e2e/testdata/fn-render/format-on-success/resources.yaml

@@ -0,0 +1,32 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+  replicas: 3
+  selector:
+      matchLabels:
+        app: nginx
+  template:
+    metadata:
+      labels:
+        app: nginx
+    spec:
+      containers:
+        - name: nginx
+          ports:
+            - containerPort: 80
+          image: nginx:1.14.2

e2e/testdata/fn-render/no-format-on-failure/.expected/config.yaml

@@ -0,0 +1,16 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+exitCode: 1
+stdErr: 'Error: unable to parse "Kptfile"'

e2e/testdata/fn-render/no-format-on-failure/.krmignore

@@ -0,0 +1 @@
+.expected

e2e/testdata/fn-render/no-format-on-failure/Kptfile

@@ -0,0 +1,10 @@
+apiVersion: kpt.dev/v1alpha2
+kind: Kptfile
+metadata:
+  name: app-with-db
+pipeline:
+  mutators:
+  - image: gcr.io/kpt-fn/set-namespace:unstable
+    configMap:
+      namespace:
+        hello: world

e2e/testdata/fn-render/no-format-on-failure/db/Kptfile

@@ -0,0 +1,9 @@
+apiVersion: kpt.dev/v1alpha2
+kind: Kptfile
+metadata:
+  name: db
+pipeline:
+  mutators:
+  - image: gcr.io/kpt-fn/set-namespace:unstable
+    configMap:
+      namespace: db

e2e/testdata/fn-render/no-format-on-failure/db/resources.yaml

@@ -0,0 +1,19 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: db
+spec:
+    replicas: 3

e2e/testdata/fn-render/no-format-on-failure/resources.yaml

@@ -0,0 +1,26 @@
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx-deployment
+spec:
+    replicas: 3
+---
+apiVersion: custom.io/v1
+kind: Custom
+metadata:
+  name: custom
+spec:
+  image: nginx:1.2.3