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220 lines
8.6 KiB
Bash
Executable File
220 lines
8.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2018 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -o errexit
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set -o nounset
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set -o pipefail
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# Runs tests for kubectl diff
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run_kubectl_diff_tests() {
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set -o nounset
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set -o errexit
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create_and_use_new_namespace
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kube::log::status "Testing kubectl diff"
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# Test that it works when the live object doesn't exist
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output_message=$(! kubectl diff -f hack/testdata/pod.yaml)
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kube::test::if_has_string "${output_message}" 'test-pod'
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# Ensure diff only dry-runs and doesn't persist change
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kube::test::get_object_assert 'pod' "{{range.items}}{{ if eq ${id_field:?} \"test-pod\" }}found{{end}}{{end}}:" ':'
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kubectl apply -f hack/testdata/pod.yaml
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kube::test::get_object_assert 'pod' "{{range.items}}{{ if eq ${id_field:?} \"test-pod\" }}found{{end}}{{end}}:" 'found:'
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initialResourceVersion=$(kubectl get "${kube_flags[@]:?}" -f hack/testdata/pod.yaml -o go-template='{{ .metadata.resourceVersion }}')
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# Make sure that diffing the resource right after returns nothing (0 exit code).
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kubectl diff -f hack/testdata/pod.yaml
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# Ensure diff only dry-runs and doesn't persist change
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resourceVersion=$(kubectl get "${kube_flags[@]:?}" -f hack/testdata/pod.yaml -o go-template='{{ .metadata.resourceVersion }}')
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kube::test::if_has_string "${resourceVersion}" "${initialResourceVersion}"
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# Make sure that:
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# 1. the exit code for diff is 1 because it found a difference
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# 2. the difference contains the changed image
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# 3. the output doesn't indicate this is an error
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output_message=$(kubectl diff -f hack/testdata/pod-changed.yaml 2>&1 || test $? -eq 1)
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kube::test::if_has_string "${output_message}" 'registry.k8s.io/pause:3.4'
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kube::test::if_has_not_string "${output_message}" 'exit status 1'
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# Ensure diff only dry-runs and doesn't persist change
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resourceVersion=$(kubectl get "${kube_flags[@]:?}" -f hack/testdata/pod.yaml -o go-template='{{ .metadata.resourceVersion }}')
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kube::test::if_has_string "${resourceVersion}" "${initialResourceVersion}"
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# Test found diff with server-side apply
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output_message=$(kubectl diff -f hack/testdata/pod-changed.yaml --server-side || test $? -eq 1)
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kube::test::if_has_string "${output_message}" 'registry.k8s.io/pause:3.4'
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# Ensure diff --server-side only dry-runs and doesn't persist change
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resourceVersion=$(kubectl get "${kube_flags[@]:?}" -f hack/testdata/pod.yaml -o go-template='{{ .metadata.resourceVersion }}')
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kube::test::if_has_string "${resourceVersion}" "${initialResourceVersion}"
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# Test that we have a return code bigger than 1 if there is an error when diffing
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kubectl diff -f hack/testdata/invalid-pod.yaml || test $? -gt 1
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# Cleanup
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kubectl delete -f hack/testdata/pod.yaml
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kube::log::status "Testing kubectl diff with server-side apply"
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# Test that kubectl diff --server-side works when the live object doesn't exist
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output_message=$(! kubectl diff --server-side -f hack/testdata/pod.yaml)
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kube::test::if_has_string "${output_message}" 'test-pod'
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# Ensure diff --server-side only dry-runs and doesn't persist change
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kube::test::get_object_assert 'pod' "{{range.items}}{{ if eq ${id_field:?} \"test-pod\" }}found{{end}}{{end}}:" ':'
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# Server-side apply the Pod
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kubectl apply --server-side -f hack/testdata/pod.yaml
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kube::test::get_object_assert 'pod' "{{range.items}}{{ if eq ${id_field:?} \"test-pod\" }}found{{end}}{{end}}:" 'found:'
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# Make sure that --server-side diffing the resource right after returns nothing (0 exit code).
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kubectl diff --server-side -f hack/testdata/pod.yaml
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# Make sure that for kubectl diff --server-side:
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# 1. the exit code for diff is 1 because it found a difference
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# 2. the difference contains the changed image
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output_message=$(kubectl diff --server-side -f hack/testdata/pod-changed.yaml || test $? -eq 1)
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kube::test::if_has_string "${output_message}" 'registry.k8s.io/pause:3.4'
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## kubectl diff --prune
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kubectl create ns nsb
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kubectl apply --namespace nsb -l prune-group=true -f hack/testdata/prune/a.yaml
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kube::test::get_object_assert 'pods a -n nsb' "{{${id_field:?}}}" 'a'
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# Make sure that kubectl diff does not return pod 'a' without prune flag
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output_message=$(kubectl diff -l prune-group=true -f hack/testdata/prune/b.yaml || test $? -eq 1)
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kube::test::if_has_not_string "${output_message}" "name: a"
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# Make sure that for kubectl diff --prune:
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# 1. the exit code for diff is 1 because it found a difference
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# 2. the difference contains the pruned pod
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output_message=$(kubectl diff --prune -l prune-group=true -f hack/testdata/prune/b.yaml || test $? -eq 1)
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# pod 'a' should be in output, it is pruned
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kube::test::if_has_string "${output_message}" 'name: a'
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# apply b with namespace
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kubectl apply --prune --namespace nsb -l prune-group=true -f hack/testdata/prune/b.yaml
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# check right pod exists and wrong pod doesn't exist
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kube::test::wait_object_assert 'pods -n nsb' "{{range.items}}{{${id_field:?}}}:{{end}}" 'b:'
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# Make sure that diff --prune returns nothing (0 exit code) for 'b'.
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kubectl diff --prune -l prune-group=true -f hack/testdata/prune/b.yaml
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# Cleanup
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kubectl delete -f hack/testdata/pod.yaml
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kubectl delete -f hack/testdata/prune/b.yaml
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kubectl delete namespace nsb
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## kubectl diff --prune with label selector
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kubectl create ns nsbprune
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kubectl apply --namespace nsbprune -f - <<EOF
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apiVersion: v1
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kind: Pod
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metadata:
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name: a
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namespace: nsbprune
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labels:
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prune-group: "true"
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spec:
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containers:
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- name: kubernetes-pause
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image: registry.k8s.io/pause:3.10
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---
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apiVersion: v1
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kind: Pod
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metadata:
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name: b
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namespace: nsbprune
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labels:
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prune-group: "true"
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spec:
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containers:
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- name: kubernetes-pause
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image: registry.k8s.io/pause:3.10
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---
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apiVersion: v1
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kind: Pod
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metadata:
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name: c
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namespace: nsbprune
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labels:
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prune-group: "false"
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spec:
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containers:
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- name: kubernetes-pause
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image: registry.k8s.io/pause:3.10
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EOF
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kube::test::get_object_assert 'pods a -n nsbprune' "{{${id_field:?}}}" 'a'
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kube::test::get_object_assert 'pods b -n nsbprune' "{{${id_field:?}}}" 'b'
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kube::test::get_object_assert 'pods c -n nsbprune' "{{${id_field:?}}}" 'c'
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# Make sure that kubectl diff does not return either pod 'b' or pod 'c' without prune flag
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PRUNE=$(cat <<EOF
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apiVersion: v1
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kind: Pod
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metadata:
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name: a
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namespace: nsbprune
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labels:
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prune-group: "true"
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spec:
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containers:
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- name: kubernetes-pause
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image: registry.k8s.io/pause:3.10
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---
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apiVersion: v1
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kind: Pod
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metadata:
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name: c
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namespace: nsbprune
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labels:
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prune-group: "false"
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spec:
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containers:
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- name: kubernetes-pause
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image: registry.k8s.io/pause:3.10
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EOF
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)
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output_message=$(echo "${PRUNE}" | kubectl diff -l prune-group=true -f -)
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kube::test::if_has_not_string "${output_message}" "name: b"
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kube::test::if_has_not_string "${output_message}" "name: c"
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# the exit code for diff is 1 because pod 'b' is found in the given label selector but not 'c'
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output_message=$(echo "${PRUNE}" | kubectl diff --prune -l prune-group=true -f - || test $? -eq 1)
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# pod 'b' should be in output, it is pruned. On the other hand, 'c' should not be, it's label selector is different
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kube::test::if_has_string "${output_message}" 'name: b'
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kube::test::if_has_not_string "${output_message}" "name: c"
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# Cleanup
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kubectl delete namespace nsbprune
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set +o nounset
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set +o errexit
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}
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run_kubectl_diff_same_names() {
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set -o nounset
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set -o errexit
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create_and_use_new_namespace
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kube::log::status "Test kubectl diff with multiple resources with the same name"
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output_message=$(KUBECTL_EXTERNAL_DIFF="find" kubectl diff -Rf hack/testdata/diff/)
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kube::test::if_has_string "${output_message}" 'v1\.Pod\..*\.test'
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kube::test::if_has_string "${output_message}" 'apps\.v1\.Deployment\..*\.test'
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kube::test::if_has_string "${output_message}" 'v1\.ConfigMap\..*\.test'
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kube::test::if_has_string "${output_message}" 'v1\.Secret\..*\.test'
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set +o nounset
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set +o errexit
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}
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