Re-enable label selector

hack/testdata/prune/a_selector.yaml

@@ -1,35 +0,0 @@
-apiVersion: v1
-kind: Pod
-metadata:
-  name: a
-  namespace: nsbprune
-  labels:
-    prune-group: "true"
-spec:
-  containers:
-  - name: kubernetes-pause
-    image: registry.k8s.io/pause:3.9
----
-apiVersion: v1
-kind: Pod
-metadata:
-  name: b
-  namespace: nsbprune
-  labels:
-    prune-group: "true"
-spec:
-  containers:
-    - name: kubernetes-pause
-      image: registry.k8s.io/pause:3.9
----
-apiVersion: v1
-kind: Pod
-metadata:
-  name: c
-  namespace: nsbprune
-  labels:
-    prune-group: "false"
-spec:
-  containers:
-    - name: kubernetes-pause
-      image: registry.k8s.io/pause:3.9

hack/testdata/prune/a_selector_prune.yaml

@@ -1,23 +0,0 @@
-apiVersion: v1
-kind: Pod
-metadata:
-  name: a
-  namespace: nsbprune
-  labels:
-    prune-group: "true"
-spec:
-  containers:
-  - name: kubernetes-pause
-    image: registry.k8s.io/pause:3.9
----
-apiVersion: v1
-kind: Pod
-metadata:
-  name: c
-  namespace: nsbprune
-  labels:
-    prune-group: "false"
-spec:
-  containers:
-    - name: kubernetes-pause
-      image: registry.k8s.io/pause:3.9

staging/src/k8s.io/kubectl/pkg/cmd/diff/prune.go

@@ -47,7 +47,7 @@ func newPruner(dc dynamic.Interface, m meta.RESTMapper, r []prune.Resource, sele
 		dynamicClient:     dc,
 		mapper:            m,
 		resources:         r,
-		//labelSelector:     selector,
+		labelSelector:     selector,
 	}
 }
 

test/cmd/diff.sh

@@ -113,25 +113,88 @@ run_kubectl_diff_tests() {
     # Cleanup
     kubectl delete -f hack/testdata/pod.yaml
     kubectl delete -f hack/testdata/prune/b.yaml
+    kubectl delete namespace nsb
 
     ## kubectl diff --prune with label selector
     kubectl create ns nsbprune
-    kubectl apply --namespace nsbprune -f hack/testdata/prune/a_selector.yaml
+    kubectl apply --namespace nsbprune -f - <<EOF
+apiVersion: v1
+kind: Pod
+metadata:
+  name: a
+  namespace: nsbprune
+  labels:
+    prune-group: "true"
+spec:
+  containers:
+  - name: kubernetes-pause
+    image: registry.k8s.io/pause:3.9
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: b
+  namespace: nsbprune
+  labels:
+    prune-group: "true"
+spec:
+  containers:
+    - name: kubernetes-pause
+      image: registry.k8s.io/pause:3.9
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: c
+  namespace: nsbprune
+  labels:
+    prune-group: "false"
+spec:
+  containers:
+    - name: kubernetes-pause
+      image: registry.k8s.io/pause:3.9
+EOF
     kube::test::get_object_assert 'pods a -n nsbprune' "{{${id_field:?}}}" 'a'
     kube::test::get_object_assert 'pods b -n nsbprune' "{{${id_field:?}}}" 'b'
     kube::test::get_object_assert 'pods c -n nsbprune' "{{${id_field:?}}}" 'c'
-    # Make sure that kubectl diff does not return neither pod 'b' nor pod 'c' without prune flag
-    output_message=$(kubectl diff -l prune-group=true -f hack/testdata/prune/a_selector_prune.yaml)
+    # Make sure that kubectl diff does not return either pod 'b' or pod 'c' without prune flag
+    PRUNE=$(cat <<EOF
+apiVersion: v1
+kind: Pod
+metadata:
+  name: a
+  namespace: nsbprune
+  labels:
+    prune-group: "true"
+spec:
+  containers:
+  - name: kubernetes-pause
+    image: registry.k8s.io/pause:3.9
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: c
+  namespace: nsbprune
+  labels:
+    prune-group: "false"
+spec:
+  containers:
+    - name: kubernetes-pause
+      image: registry.k8s.io/pause:3.9
+EOF
+)
+    output_message=$(echo "${PRUNE}" | kubectl diff -l prune-group=true -f -)
     kube::test::if_has_not_string "${output_message}" "name: b"
     kube::test::if_has_not_string "${output_message}" "name: c"
-    # the exist code for diff is 1 because pod name 'b' is found in the given label selector but not 'c'
-    output_message=$(kubectl diff --prune -l prune-group=true -f hack/testdata/prune/a_selector_prune.yaml || test $? -eq 1)
+    # the exit code for diff is 1 because pod 'b' is found in the given label selector but not 'c'
+    output_message=$(echo "${PRUNE}" | kubectl diff --prune -l prune-group=true -f - || test $? -eq 1)
     # pod 'b' should be in output, it is pruned. On the other hand, 'c' should not be, it's label selector is different
     kube::test::if_has_string "${output_message}" 'name: b'
     kube::test::if_has_not_string "${output_message}" "name: c"
 
     # Cleanup
-    kubectl delete -f hack/testdata/prune/a_selector.yaml
+    kubectl delete namespace nsbprune
 
 
     set +o nounset