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test-cmd-util.sh
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#!/bin/bash
# Copyright 2016 The Kubernetes Authors.
#
# 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.
# This contains util code for testing kubectl.
set -o errexit
set -o nounset
set -o pipefail
# Set locale to ensure english responses from kubectl commands
export LANG=C
KUBE_ROOT=$(dirname "${BASH_SOURCE}")/../..
# Expects the following has already been done by whatever sources this script
# source "${KUBE_ROOT}/hack/lib/init.sh"
# source "${KUBE_ROOT}/hack/lib/test.sh"
ETCD_HOST=${ETCD_HOST:-127.0.0.1}
ETCD_PORT=${ETCD_PORT:-2379}
API_PORT=${API_PORT:-8080}
SECURE_API_PORT=${SECURE_API_PORT:-6443}
API_HOST=${API_HOST:-127.0.0.1}
KUBELET_HEALTHZ_PORT=${KUBELET_HEALTHZ_PORT:-10248}
CTLRMGR_PORT=${CTLRMGR_PORT:-10252}
PROXY_HOST=127.0.0.1 # kubectl only serves on localhost.
IMAGE_NGINX="gcr.io/google-containers/nginx:1.7.9"
IMAGE_DEPLOYMENT_R1="gcr.io/google-containers/nginx:test-cmd" # deployment-revision1.yaml
IMAGE_DEPLOYMENT_R2="$IMAGE_NGINX" # deployment-revision2.yaml
IMAGE_PERL="gcr.io/google-containers/perl"
IMAGE_PAUSE_V2="gcr.io/google-containers/pause:2.0"
IMAGE_DAEMONSET_R2="gcr.io/google-containers/pause:latest"
IMAGE_DAEMONSET_R2_2="gcr.io/google-containers/nginx:test-cmd" # rollingupdate-daemonset-rv2.yaml
IMAGE_STATEFULSET_R1="gcr.io/google_containers/nginx-slim:0.7"
IMAGE_STATEFULSET_R2="gcr.io/google_containers/nginx-slim:0.8"
# Expose kubectl directly for readability
PATH="${KUBE_OUTPUT_HOSTBIN}":$PATH
# Define variables for resource types to prevent typos.
clusterroles="clusterroles"
configmaps="configmaps"
csr="csr"
deployments="deployments"
horizontalpodautoscalers="horizontalpodautoscalers"
metrics="metrics"
namespaces="namespaces"
nodes="nodes"
persistentvolumeclaims="persistentvolumeclaims"
persistentvolumes="persistentvolumes"
pods="pods"
podtemplates="podtemplates"
replicasets="replicasets"
replicationcontrollers="replicationcontrollers"
roles="roles"
secrets="secrets"
serviceaccounts="serviceaccounts"
services="services"
statefulsets="statefulsets"
static="static"
storageclass="storageclass"
subjectaccessreviews="subjectaccessreviews"
selfsubjectaccessreviews="selfsubjectaccessreviews"
customresourcedefinitions="customresourcedefinitions"
daemonsets="daemonsets"
controllerrevisions="controllerrevisions"
# include shell2junit library
sh2ju="${KUBE_ROOT}/third_party/forked/shell2junit/sh2ju.sh"
if [[ -f "${sh2ju}" ]]; then
source "${sh2ju}"
else
echo "failed to find third_party/forked/shell2junit/sh2ju.sh"
exit 1
fi
# record_command runs the command and records its output/error messages in junit format
# it expects the first to be the name of the command
# Example:
# record_command run_kubectl_tests
#
# WARNING: Variable changes in the command will NOT be effective after record_command returns.
# This is because the command runs in subshell.
function record_command() {
set +o nounset
set +o errexit
local name="$1"
local output="${KUBE_JUNIT_REPORT_DIR:-/tmp/junit-results}"
echo "Recording: ${name}"
echo "Running command: $@"
juLog -output="${output}" -class="test-cmd" -name="${name}" "$@"
if [[ $? -ne 0 ]]; then
echo "Error when running ${name}"
foundError="True"
fi
set -o nounset
set -o errexit
}
# Stops the running kubectl proxy, if there is one.
function stop-proxy()
{
[[ -n "${PROXY_PORT-}" ]] && kube::log::status "Stopping proxy on port ${PROXY_PORT}"
[[ -n "${PROXY_PID-}" ]] && kill "${PROXY_PID}" 1>&2 2>/dev/null
[[ -n "${PROXY_PORT_FILE-}" ]] && rm -f ${PROXY_PORT_FILE}
PROXY_PID=
PROXY_PORT=
PROXY_PORT_FILE=
}
# Starts "kubect proxy" to test the client proxy. $1: api_prefix
function start-proxy()
{
stop-proxy
PROXY_PORT_FILE=$(mktemp proxy-port.out.XXXXX)
kube::log::status "Starting kubectl proxy on random port; output file in ${PROXY_PORT_FILE}; args: ${1-}"
if [ $# -eq 0 ]; then
kubectl proxy --port=0 --www=. 1>${PROXY_PORT_FILE} 2>&1 &
else
kubectl proxy --port=0 --www=. --api-prefix="$1" 1>${PROXY_PORT_FILE} 2>&1 &
fi
PROXY_PID=$!
PROXY_PORT=
local attempts=0
while [[ -z ${PROXY_PORT} ]]; do
if (( ${attempts} > 9 )); then
kill "${PROXY_PID}"
kube::log::error_exit "Couldn't start proxy. Failed to read port after ${attempts} tries. Got: $(cat ${PROXY_PORT_FILE})"
fi
sleep .5
kube::log::status "Attempt ${attempts} to read ${PROXY_PORT_FILE}..."
PROXY_PORT=$(sed 's/.*Starting to serve on 127.0.0.1:\([0-9]*\)$/\1/'< ${PROXY_PORT_FILE})
attempts=$((attempts+1))
done
kube::log::status "kubectl proxy running on port ${PROXY_PORT}"
# We try checking kubectl proxy 30 times with 1s delays to avoid occasional
# failures.
if [ $# -eq 0 ]; then
kube::util::wait_for_url "http://127.0.0.1:${PROXY_PORT}/healthz" "kubectl proxy"
else
kube::util::wait_for_url "http://127.0.0.1:${PROXY_PORT}/$1/healthz" "kubectl proxy --api-prefix=$1"
fi
}
function cleanup()
{
[[ -n "${APISERVER_PID-}" ]] && kill "${APISERVER_PID}" 1>&2 2>/dev/null
[[ -n "${CTLRMGR_PID-}" ]] && kill "${CTLRMGR_PID}" 1>&2 2>/dev/null
[[ -n "${KUBELET_PID-}" ]] && kill "${KUBELET_PID}" 1>&2 2>/dev/null
stop-proxy
kube::etcd::cleanup
rm -rf "${KUBE_TEMP}"
local junit_dir="${KUBE_JUNIT_REPORT_DIR:-/tmp/junit-results}"
echo "junit report dir:" ${junit_dir}
kube::log::status "Clean up complete"
}
# Executes curl against the proxy. $1 is the path to use, $2 is the desired
# return code. Prints a helpful message on failure.
function check-curl-proxy-code()
{
local status
local -r address=$1
local -r desired=$2
local -r full_address="${PROXY_HOST}:${PROXY_PORT}${address}"
status=$(curl -w "%{http_code}" --silent --output /dev/null "${full_address}")
if [ "${status}" == "${desired}" ]; then
return 0
fi
echo "For address ${full_address}, got ${status} but wanted ${desired}"
return 1
}
# TODO: Remove this function when we do the retry inside the kubectl commands. See #15333.
function kubectl-with-retry()
{
ERROR_FILE="${KUBE_TEMP}/kubectl-error"
preserve_err_file=${PRESERVE_ERR_FILE-false}
for count in {0..3}; do
kubectl "$@" 2> ${ERROR_FILE} || true
if grep -q "the object has been modified" "${ERROR_FILE}"; then
kube::log::status "retry $1, error: $(cat ${ERROR_FILE})"
rm "${ERROR_FILE}"
sleep $((2**count))
else
if [ "$preserve_err_file" != true ] ; then
rm "${ERROR_FILE}"
fi
break
fi
done
}
# Waits for the pods with the given label to match the list of names. Don't call
# this function unless you know the exact pod names, or expect no pods.
# $1: label to match
# $2: list of pod names sorted by name
# Example invocation:
# wait-for-pods-with-label "app=foo" "nginx-0nginx-1"
function wait-for-pods-with-label()
{
local i
for i in $(seq 1 10); do
kubeout=`kubectl get po -l $1 --template '{{range.items}}{{.metadata.name}}{{end}}' --sort-by metadata.name "${kube_flags[@]}"`
if [[ $kubeout = $2 ]]; then
return
fi
echo Waiting for pods: $2, found $kubeout
sleep $i
done
kube::log::error_exit "Timeout waiting for pods with label $1"
}
# Code to be run before running the tests.
setup() {
kube::util::trap_add cleanup EXIT SIGINT
kube::util::ensure-temp-dir
# ensure ~/.kube/config isn't loaded by tests
HOME="${KUBE_TEMP}"
kube::etcd::start
# Find a standard sed instance for use with edit scripts
kube::util::ensure-gnu-sed
kube::log::status "Building kubectl"
make -C "${KUBE_ROOT}" WHAT="cmd/kubectl"
# Check kubectl
kube::log::status "Running kubectl with no options"
"${KUBE_OUTPUT_HOSTBIN}/kubectl"
# TODO: we need to note down the current default namespace and set back to this
# namespace after the tests are done.
kubectl config view
CONTEXT="test"
kubectl config set-context "${CONTEXT}"
kubectl config use-context "${CONTEXT}"
kube::log::status "Setup complete"
}
########################################################
# Kubectl version (--short, --client, --output) #
########################################################
run_kubectl_version_tests() {
set -o nounset
set -o errexit
kube::log::status "Testing kubectl version"
TEMP="${KUBE_TEMP}"
kubectl get "${kube_flags[@]}" --raw /version
# create version files, one for the client, one for the server.
# these are the files we will use to ensure that the remainder output is correct
kube::test::version::object_to_file "Client" "" "${TEMP}/client_version_test"
kube::test::version::object_to_file "Server" "" "${TEMP}/server_version_test"
kube::log::status "Testing kubectl version: check client only output matches expected output"
kube::test::version::object_to_file "Client" "--client" "${TEMP}/client_only_version_test"
kube::test::version::object_to_file "Client" "--client" "${TEMP}/server_client_only_version_test"
kube::test::version::diff_assert "${TEMP}/client_version_test" "eq" "${TEMP}/client_only_version_test" "the flag '--client' shows correct client info"
kube::test::version::diff_assert "${TEMP}/server_version_test" "ne" "${TEMP}/server_client_only_version_test" "the flag '--client' correctly has no server version info"
kube::log::status "Testing kubectl version: verify json output"
kube::test::version::json_client_server_object_to_file "" "clientVersion" "${TEMP}/client_json_version_test"
kube::test::version::json_client_server_object_to_file "" "serverVersion" "${TEMP}/server_json_version_test"
kube::test::version::diff_assert "${TEMP}/client_version_test" "eq" "${TEMP}/client_json_version_test" "--output json has correct client info"
kube::test::version::diff_assert "${TEMP}/server_version_test" "eq" "${TEMP}/server_json_version_test" "--output json has correct server info"
kube::log::status "Testing kubectl version: verify json output using additional --client flag does not contain serverVersion"
kube::test::version::json_client_server_object_to_file "--client" "clientVersion" "${TEMP}/client_only_json_version_test"
kube::test::version::json_client_server_object_to_file "--client" "serverVersion" "${TEMP}/server_client_only_json_version_test"
kube::test::version::diff_assert "${TEMP}/client_version_test" "eq" "${TEMP}/client_only_json_version_test" "--client --output json has correct client info"
kube::test::version::diff_assert "${TEMP}/server_version_test" "ne" "${TEMP}/server_client_only_json_version_test" "--client --output json has no server info"
kube::log::status "Testing kubectl version: compare json output using additional --short flag"
kube::test::version::json_client_server_object_to_file "--short" "clientVersion" "${TEMP}/client_short_json_version_test"
kube::test::version::json_client_server_object_to_file "--short" "serverVersion" "${TEMP}/server_short_json_version_test"
kube::test::version::diff_assert "${TEMP}/client_version_test" "eq" "${TEMP}/client_short_json_version_test" "--short --output client json info is equal to non short result"
kube::test::version::diff_assert "${TEMP}/server_version_test" "eq" "${TEMP}/server_short_json_version_test" "--short --output server json info is equal to non short result"
kube::log::status "Testing kubectl version: compare json output with yaml output"
kube::test::version::json_object_to_file "" "${TEMP}/client_server_json_version_test"
kube::test::version::yaml_object_to_file "" "${TEMP}/client_server_yaml_version_test"
kube::test::version::diff_assert "${TEMP}/client_server_json_version_test" "eq" "${TEMP}/client_server_yaml_version_test" "--output json/yaml has identical information"
set +o nounset
set +o errexit
}
# Runs all pod related tests.
run_pod_tests() {
set -o nounset
set -o errexit
kube::log::status "Testing kubectl(v1:pods)"
### Create POD valid-pod from JSON
# Pre-condition: no POD exists
create_and_use_new_namespace
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
kubectl create "${kube_flags[@]}" -f test/fixtures/doc-yaml/admin/limitrange/valid-pod.yaml
# Post-condition: valid-pod POD is created
kubectl get "${kube_flags[@]}" pods -o json
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
kube::test::get_object_assert 'pod valid-pod' "{{$id_field}}" 'valid-pod'
kube::test::get_object_assert 'pod/valid-pod' "{{$id_field}}" 'valid-pod'
kube::test::get_object_assert 'pods/valid-pod' "{{$id_field}}" 'valid-pod'
# Repeat above test using jsonpath template
kube::test::get_object_jsonpath_assert pods "{.items[*]$id_field}" 'valid-pod'
kube::test::get_object_jsonpath_assert 'pod valid-pod' "{$id_field}" 'valid-pod'
kube::test::get_object_jsonpath_assert 'pod/valid-pod' "{$id_field}" 'valid-pod'
kube::test::get_object_jsonpath_assert 'pods/valid-pod' "{$id_field}" 'valid-pod'
# Describe command should print detailed information
kube::test::describe_object_assert pods 'valid-pod' "Name:" "Image:" "Node:" "Labels:" "Status:"
# Describe command should print events information by default
kube::test::describe_object_events_assert pods 'valid-pod'
# Describe command should not print events information when show-events=false
kube::test::describe_object_events_assert pods 'valid-pod' false
# Describe command should print events information when show-events=true
kube::test::describe_object_events_assert pods 'valid-pod' true
# Describe command (resource only) should print detailed information
kube::test::describe_resource_assert pods "Name:" "Image:" "Node:" "Labels:" "Status:"
# Describe command should print events information by default
kube::test::describe_resource_events_assert pods
# Describe command should not print events information when show-events=false
kube::test::describe_resource_events_assert pods false
# Describe command should print events information when show-events=true
kube::test::describe_resource_events_assert pods true
### Validate Export ###
kube::test::get_object_assert 'pods/valid-pod' "{{.metadata.namespace}} {{.metadata.name}}" '<no value> valid-pod' "--export=true"
### Dump current valid-pod POD
output_pod=$(kubectl get pod valid-pod -o yaml --output-version=v1 "${kube_flags[@]}")
### Delete POD valid-pod by id
# Pre-condition: valid-pod POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
# Command
kubectl delete pod valid-pod "${kube_flags[@]}" --grace-period=0 --force
# Post-condition: valid-pod POD doesn't exist
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
### Delete POD valid-pod by id with --now
# Pre-condition: valid-pod POD exists
kubectl create "${kube_flags[@]}" -f test/fixtures/doc-yaml/admin/limitrange/valid-pod.yaml
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
# Command
kubectl delete pod valid-pod "${kube_flags[@]}" --now
# Post-condition: valid-pod POD doesn't exist
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
### Delete POD valid-pod by id with --grace-period=0
# Pre-condition: valid-pod POD exists
kubectl create "${kube_flags[@]}" -f test/fixtures/doc-yaml/admin/limitrange/valid-pod.yaml
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
# Command succeeds without --force by waiting
kubectl delete pod valid-pod "${kube_flags[@]}" --grace-period=0
# Post-condition: valid-pod POD doesn't exist
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
### Create POD valid-pod from dumped YAML
# Pre-condition: no POD exists
create_and_use_new_namespace
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
echo "${output_pod}" | ${SED} '/namespace:/d' | kubectl create -f - "${kube_flags[@]}"
# Post-condition: valid-pod POD is created
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
### Delete POD valid-pod from JSON
# Pre-condition: valid-pod POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
# Command
kubectl delete -f test/fixtures/doc-yaml/admin/limitrange/valid-pod.yaml "${kube_flags[@]}" --grace-period=0 --force
# Post-condition: valid-pod POD doesn't exist
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
### Create POD valid-pod from JSON
# Pre-condition: no POD exists
create_and_use_new_namespace
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
kubectl create -f test/fixtures/doc-yaml/admin/limitrange/valid-pod.yaml "${kube_flags[@]}"
# Post-condition: valid-pod POD is created
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
### Delete POD valid-pod with label
# Pre-condition: valid-pod POD exists
kube::test::get_object_assert "pods -l'name in (valid-pod)'" '{{range.items}}{{$id_field}}:{{end}}' 'valid-pod:'
# Command
kubectl delete pods -l'name in (valid-pod)' "${kube_flags[@]}" --grace-period=0 --force
# Post-condition: valid-pod POD doesn't exist
kube::test::get_object_assert "pods -l'name in (valid-pod)'" '{{range.items}}{{$id_field}}:{{end}}' ''
### Create POD valid-pod from YAML
# Pre-condition: no POD exists
create_and_use_new_namespace
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
kubectl create -f test/fixtures/doc-yaml/admin/limitrange/valid-pod.yaml "${kube_flags[@]}"
# Post-condition: valid-pod POD is created
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
# Command
output_message=$(kubectl get pods --field-selector metadata.name=valid-pod "${kube_flags[@]}")
kube::test::if_has_string "${output_message}" "valid-pod"
# Command
phase=$(kubectl get "${kube_flags[@]}" pod valid-pod -o go-template='{{ .status.phase }}')
output_message=$(kubectl get pods --field-selector status.phase="${phase}" "${kube_flags[@]}")
kube::test::if_has_string "${output_message}" "valid-pod"
### Delete PODs with no parameter mustn't kill everything
# Pre-condition: valid-pod POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
# Command
! kubectl delete pods "${kube_flags[@]}"
# Post-condition: valid-pod POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
### Delete PODs with --all and a label selector is not permitted
# Pre-condition: valid-pod POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
# Command
! kubectl delete --all pods -l'name in (valid-pod)' "${kube_flags[@]}"
# Post-condition: valid-pod POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
### Delete all PODs
# Pre-condition: valid-pod POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
# Command
kubectl delete --all pods "${kube_flags[@]}" --grace-period=0 --force # --all remove all the pods
# Post-condition: no POD exists
kube::test::get_object_assert "pods -l'name in (valid-pod)'" '{{range.items}}{{$id_field}}:{{end}}' ''
# Detailed tests for describe pod output
### Create a new namespace
# Pre-condition: the test-secrets namespace does not exist
kube::test::get_object_assert 'namespaces' '{{range.items}}{{ if eq $id_field \"test-kubectl-describe-pod\" }}found{{end}}{{end}}:' ':'
# Command
kubectl create namespace test-kubectl-describe-pod
# Post-condition: namespace 'test-secrets' is created.
kube::test::get_object_assert 'namespaces/test-kubectl-describe-pod' "{{$id_field}}" 'test-kubectl-describe-pod'
### Create a generic secret
# Pre-condition: no SECRET exists
kube::test::get_object_assert 'secrets --namespace=test-kubectl-describe-pod' "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
kubectl create secret generic test-secret --from-literal=key-1=value1 --type=test-type --namespace=test-kubectl-describe-pod
# Post-condition: secret exists and has expected values
kube::test::get_object_assert 'secret/test-secret --namespace=test-kubectl-describe-pod' "{{$id_field}}" 'test-secret'
kube::test::get_object_assert 'secret/test-secret --namespace=test-kubectl-describe-pod' "{{$secret_type}}" 'test-type'
### Create a generic configmap
# Pre-condition: no CONFIGMAP exists
kube::test::get_object_assert 'configmaps --namespace=test-kubectl-describe-pod' "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
kubectl create configmap test-configmap --from-literal=key-2=value2 --namespace=test-kubectl-describe-pod
# Post-condition: configmap exists and has expected values
kube::test::get_object_assert 'configmap/test-configmap --namespace=test-kubectl-describe-pod' "{{$id_field}}" 'test-configmap'
### Create a pod disruption budget with minAvailable
# Command
kubectl create pdb test-pdb-1 --selector=app=rails --min-available=2 --namespace=test-kubectl-describe-pod
# Post-condition: pdb exists and has expected values
kube::test::get_object_assert 'pdb/test-pdb-1 --namespace=test-kubectl-describe-pod' "{{$pdb_min_available}}" '2'
# Command
kubectl create pdb test-pdb-2 --selector=app=rails --min-available=50% --namespace=test-kubectl-describe-pod
# Post-condition: pdb exists and has expected values
kube::test::get_object_assert 'pdb/test-pdb-2 --namespace=test-kubectl-describe-pod' "{{$pdb_min_available}}" '50%'
### Create a pod disruption budget with maxUnavailable
# Command
kubectl create pdb test-pdb-3 --selector=app=rails --max-unavailable=2 --namespace=test-kubectl-describe-pod
# Post-condition: pdb exists and has expected values
kube::test::get_object_assert 'pdb/test-pdb-3 --namespace=test-kubectl-describe-pod' "{{$pdb_max_unavailable}}" '2'
# Command
kubectl create pdb test-pdb-4 --selector=app=rails --max-unavailable=50% --namespace=test-kubectl-describe-pod
# Post-condition: pdb exists and has expected values
kube::test::get_object_assert 'pdb/test-pdb-4 --namespace=test-kubectl-describe-pod' "{{$pdb_max_unavailable}}" '50%'
### Fail creating a pod disruption budget if both maxUnavailable and minAvailable specified
! kubectl create pdb test-pdb --selector=app=rails --min-available=2 --max-unavailable=3 --namespace=test-kubectl-describe-pod
# Create a pod that consumes secret, configmap, and downward API keys as envs
kube::test::get_object_assert 'pods --namespace=test-kubectl-describe-pod' "{{range.items}}{{$id_field}}:{{end}}" ''
kubectl create -f hack/testdata/pod-with-api-env.yaml --namespace=test-kubectl-describe-pod
kube::test::describe_object_assert 'pods --namespace=test-kubectl-describe-pod' 'env-test-pod' "TEST_CMD_1" "<set to the key 'key-1' in secret 'test-secret'>" "TEST_CMD_2" "<set to the key 'key-2' of config map 'test-configmap'>" "TEST_CMD_3" "env-test-pod (v1:metadata.name)"
# Describe command (resource only) should print detailed information about environment variables
kube::test::describe_resource_assert 'pods --namespace=test-kubectl-describe-pod' "TEST_CMD_1" "<set to the key 'key-1' in secret 'test-secret'>" "TEST_CMD_2" "<set to the key 'key-2' of config map 'test-configmap'>" "TEST_CMD_3" "env-test-pod (v1:metadata.name)"
# Clean-up
kubectl delete pod env-test-pod --namespace=test-kubectl-describe-pod
kubectl delete secret test-secret --namespace=test-kubectl-describe-pod
kubectl delete configmap test-configmap --namespace=test-kubectl-describe-pod
kubectl delete pdb/test-pdb-1 pdb/test-pdb-2 pdb/test-pdb-3 pdb/test-pdb-4 --namespace=test-kubectl-describe-pod
kubectl delete namespace test-kubectl-describe-pod
### Create two PODs
# Pre-condition: no POD exists
create_and_use_new_namespace
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
kubectl create -f test/fixtures/doc-yaml/admin/limitrange/valid-pod.yaml "${kube_flags[@]}"
kubectl create -f examples/storage/redis/redis-master.yaml "${kube_flags[@]}"
# Post-condition: valid-pod and redis-master PODs are created
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'redis-master:valid-pod:'
### Delete multiple PODs at once
# Pre-condition: valid-pod and redis-master PODs exist
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'redis-master:valid-pod:'
# Command
kubectl delete pods valid-pod redis-master "${kube_flags[@]}" --grace-period=0 --force # delete multiple pods at once
# Post-condition: no POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
### Create valid-pod POD
# Pre-condition: no POD exists
create_and_use_new_namespace
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
kubectl create -f test/fixtures/doc-yaml/admin/limitrange/valid-pod.yaml "${kube_flags[@]}"
# Post-condition: valid-pod POD is created
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
### Label the valid-pod POD
# Pre-condition: valid-pod is not labelled
kube::test::get_object_assert 'pod valid-pod' "{{range$labels_field}}{{.}}:{{end}}" 'valid-pod:'
# Command
kubectl label pods valid-pod new-name=new-valid-pod "${kube_flags[@]}"
# Post-condition: valid-pod is labelled
kube::test::get_object_assert 'pod valid-pod' "{{range$labels_field}}{{.}}:{{end}}" 'valid-pod:new-valid-pod:'
### Label the valid-pod POD with empty label value
# Pre-condition: valid-pod does not have label "emptylabel"
kube::test::get_object_assert 'pod valid-pod' "{{range$labels_field}}{{.}}:{{end}}" 'valid-pod:new-valid-pod:'
# Command
kubectl label pods valid-pod emptylabel="" "${kube_flags[@]}"
# Post-condition: valid pod contains "emptylabel" with no value
kube::test::get_object_assert 'pod valid-pod' "{{${labels_field}.emptylabel}}" ''
### Annotate the valid-pod POD with empty annotation value
# Pre-condition: valid-pod does not have annotation "emptyannotation"
kube::test::get_object_assert 'pod valid-pod' "{{${annotations_field}.emptyannotation}}" '<no value>'
# Command
kubectl annotate pods valid-pod emptyannotation="" "${kube_flags[@]}"
# Post-condition: valid pod contains "emptyannotation" with no value
kube::test::get_object_assert 'pod valid-pod' "{{${annotations_field}.emptyannotation}}" ''
### Record label change
# Pre-condition: valid-pod does not have record annotation
kube::test::get_object_assert 'pod valid-pod' "{{range.items}}{{$annotations_field}}:{{end}}" ''
# Command
kubectl label pods valid-pod record-change=true --record=true "${kube_flags[@]}"
# Post-condition: valid-pod has record annotation
kube::test::get_object_assert 'pod valid-pod' "{{range$annotations_field}}{{.}}:{{end}}" ".*--record=true.*"
### Do not record label change
# Command
kubectl label pods valid-pod no-record-change=true --record=false "${kube_flags[@]}"
# Post-condition: valid-pod's record annotation still contains command with --record=true
kube::test::get_object_assert 'pod valid-pod' "{{range$annotations_field}}{{.}}:{{end}}" ".*--record=true.*"
### Record label change with unspecified flag and previous change already recorded
# Command
kubectl label pods valid-pod new-record-change=true "${kube_flags[@]}"
# Post-condition: valid-pod's record annotation contains new change
kube::test::get_object_assert 'pod valid-pod' "{{range$annotations_field}}{{.}}:{{end}}" ".*new-record-change=true.*"
### Delete POD by label
# Pre-condition: valid-pod POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
# Command
kubectl delete pods -lnew-name=new-valid-pod --grace-period=0 --force "${kube_flags[@]}"
# Post-condition: valid-pod POD doesn't exist
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
### Create pod-with-precision POD
# Pre-condition: no POD is running
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
kubectl create -f hack/testdata/pod-with-precision.json "${kube_flags[@]}"
# Post-condition: valid-pod POD is running
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'pod-with-precision:'
## Patch preserves precision
# Command
kubectl patch "${kube_flags[@]}" pod pod-with-precision -p='{"metadata":{"annotations":{"patchkey": "patchvalue"}}}'
# Post-condition: pod-with-precision POD has patched annotation
kube::test::get_object_assert 'pod pod-with-precision' "{{${annotations_field}.patchkey}}" 'patchvalue'
# Command
kubectl label pods pod-with-precision labelkey=labelvalue "${kube_flags[@]}"
# Post-condition: pod-with-precision POD has label
kube::test::get_object_assert 'pod pod-with-precision' "{{${labels_field}.labelkey}}" 'labelvalue'
# Command
kubectl annotate pods pod-with-precision annotatekey=annotatevalue "${kube_flags[@]}"
# Post-condition: pod-with-precision POD has annotation
kube::test::get_object_assert 'pod pod-with-precision' "{{${annotations_field}.annotatekey}}" 'annotatevalue'
# Cleanup
kubectl delete pod pod-with-precision "${kube_flags[@]}"
### Annotate POD YAML file locally without effecting the live pod.
kubectl create -f hack/testdata/pod.yaml "${kube_flags[@]}"
# Command
kubectl annotate -f hack/testdata/pod.yaml annotatekey=annotatevalue "${kube_flags[@]}"
# Pre-condition: annotationkey is annotationvalue
kube::test::get_object_assert 'pod test-pod' "{{${annotations_field}.annotatekey}}" 'annotatevalue'
# Command
output_message=$(kubectl annotate --local -f hack/testdata/pod.yaml annotatekey=localvalue -o yaml "${kube_flags[@]}")
echo $output_message
# Post-condition: annotationkey is still annotationvalue in the live pod, but command output is the new value
kube::test::get_object_assert 'pod test-pod' "{{${annotations_field}.annotatekey}}" 'annotatevalue'
kube::test::if_has_string "${output_message}" "localvalue"
# Cleanup
kubectl delete -f hack/testdata/pod.yaml "${kube_flags[@]}"
### Create valid-pod POD
# Pre-condition: no services and no rcs exist
kube::test::get_object_assert service "{{range.items}}{{$id_field}}:{{end}}" ''
kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" ''
## kubectl create --edit can update the label filed of multiple resources. tmp-editor.sh is a fake editor
TEMP=$(mktemp /tmp/tmp-editor-XXXXXXXX.sh)
echo -e "#!/bin/bash\n${SED} -i \"s/mock/modified/g\" \$1" > ${TEMP}
chmod +x ${TEMP}
# Command
EDITOR=${TEMP} kubectl create --edit -f hack/testdata/multi-resource-json.json "${kube_flags[@]}"
# Post-condition: service named modified and rc named modified are created
kube::test::get_object_assert service "{{range.items}}{{$id_field}}:{{end}}" 'modified:'
kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" 'modified:'
# Clean up
kubectl delete service/modified "${kube_flags[@]}"
kubectl delete rc/modified "${kube_flags[@]}"
# Pre-condition: no services and no rcs exist
kube::test::get_object_assert service "{{range.items}}{{$id_field}}:{{end}}" ''
kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
EDITOR=${TEMP} kubectl create --edit -f hack/testdata/multi-resource-list.json "${kube_flags[@]}"
# Post-condition: service named modified and rc named modified are created
kube::test::get_object_assert service "{{range.items}}{{$id_field}}:{{end}}" 'modified:'
kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" 'modified:'
# Clean up
rm ${TEMP}
kubectl delete service/modified "${kube_flags[@]}"
kubectl delete rc/modified "${kube_flags[@]}"
## kubectl create --edit won't create anything if user makes no changes
[ "$(EDITOR=cat kubectl create --edit -f test/fixtures/doc-yaml/admin/limitrange/valid-pod.yaml -o json 2>&1 | grep 'Edit cancelled')" ]
## Create valid-pod POD
# Pre-condition: no POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
kubectl create -f test/fixtures/doc-yaml/admin/limitrange/valid-pod.yaml "${kube_flags[@]}"
# Post-condition: valid-pod POD is created
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
## Patch can modify a local object
kubectl patch --local -f pkg/kubectl/validation/testdata/v1/validPod.yaml --patch='{"spec": {"restartPolicy":"Never"}}' -o jsonpath='{.spec.restartPolicy}' | grep -q "Never"
## Patch fails with error message "not patched" and exit code 1
output_message=$(! kubectl patch "${kube_flags[@]}" pod valid-pod -p='{"spec":{"replicas":7}}' 2>&1)
kube::test::if_has_string "${output_message}" 'not patched'
## Patch pod can change image
# Command
kubectl patch "${kube_flags[@]}" pod valid-pod --record -p='{"spec":{"containers":[{"name": "kubernetes-serve-hostname", "image": "nginx"}]}}'
# Post-condition: valid-pod POD has image nginx
kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'nginx:'
# Post-condition: valid-pod has the record annotation
kube::test::get_object_assert pods "{{range.items}}{{$annotations_field}}:{{end}}" "${change_cause_annotation}"
# prove that patch can use different types
kubectl patch "${kube_flags[@]}" pod valid-pod --type="json" -p='[{"op": "replace", "path": "/spec/containers/0/image", "value":"nginx2"}]'
# Post-condition: valid-pod POD has image nginx
kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'nginx2:'
# prove that patch can use different types
kubectl patch "${kube_flags[@]}" pod valid-pod --type="json" -p='[{"op": "replace", "path": "/spec/containers/0/image", "value":"nginx"}]'
# Post-condition: valid-pod POD has image nginx
kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'nginx:'
# prove that yaml input works too
YAML_PATCH=$'spec:\n containers:\n - name: kubernetes-serve-hostname\n image: changed-with-yaml\n'
kubectl patch "${kube_flags[@]}" pod valid-pod -p="${YAML_PATCH}"
# Post-condition: valid-pod POD has image nginx
kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'changed-with-yaml:'
## Patch pod from JSON can change image
# Command
kubectl patch "${kube_flags[@]}" -f test/fixtures/doc-yaml/admin/limitrange/valid-pod.yaml -p='{"spec":{"containers":[{"name": "kubernetes-serve-hostname", "image": "gcr.io/google_containers/pause-amd64:3.0"}]}}'
# Post-condition: valid-pod POD has image gcr.io/google_containers/pause-amd64:3.0
kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'gcr.io/google_containers/pause-amd64:3.0:'
## If resourceVersion is specified in the patch, it will be treated as a precondition, i.e., if the resourceVersion is different from that is stored in the server, the Patch should be rejected
ERROR_FILE="${KUBE_TEMP}/conflict-error"
## If the resourceVersion is the same as the one stored in the server, the patch will be applied.
# Command
# Needs to retry because other party may change the resource.
for count in {0..3}; do
resourceVersion=$(kubectl get "${kube_flags[@]}" pod valid-pod -o go-template='{{ .metadata.resourceVersion }}')
kubectl patch "${kube_flags[@]}" pod valid-pod -p='{"spec":{"containers":[{"name": "kubernetes-serve-hostname", "image": "nginx"}]},"metadata":{"resourceVersion":"'$resourceVersion'"}}' 2> "${ERROR_FILE}" || true
if grep -q "the object has been modified" "${ERROR_FILE}"; then
kube::log::status "retry $1, error: $(cat ${ERROR_FILE})"
rm "${ERROR_FILE}"
sleep $((2**count))
else
rm "${ERROR_FILE}"
kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'nginx:'
break
fi
done
## If the resourceVersion is the different from the one stored in the server, the patch will be rejected.
resourceVersion=$(kubectl get "${kube_flags[@]}" pod valid-pod -o go-template='{{ .metadata.resourceVersion }}')
((resourceVersion+=100))
# Command
kubectl patch "${kube_flags[@]}" pod valid-pod -p='{"spec":{"containers":[{"name": "kubernetes-serve-hostname", "image": "nginx"}]},"metadata":{"resourceVersion":"'$resourceVersion'"}}' 2> "${ERROR_FILE}" || true
# Post-condition: should get an error reporting the conflict
if grep -q "please apply your changes to the latest version and try again" "${ERROR_FILE}"; then
kube::log::status "\"kubectl patch with resourceVersion $resourceVersion\" returns error as expected: $(cat ${ERROR_FILE})"
else
kube::log::status "\"kubectl patch with resourceVersion $resourceVersion\" returns unexpected error or non-error: $(cat ${ERROR_FILE})"
exit 1
fi
rm "${ERROR_FILE}"
## --force replace pod can change other field, e.g., spec.container.name
# Command
kubectl get "${kube_flags[@]}" pod valid-pod -o json | ${SED} 's/"kubernetes-serve-hostname"/"replaced-k8s-serve-hostname"/g' > /tmp/tmp-valid-pod.json
kubectl replace "${kube_flags[@]}" --force -f /tmp/tmp-valid-pod.json
# Post-condition: spec.container.name = "replaced-k8s-serve-hostname"
kube::test::get_object_assert 'pod valid-pod' "{{(index .spec.containers 0).name}}" 'replaced-k8s-serve-hostname'
## check replace --grace-period requires --force
output_message=$(! kubectl replace "${kube_flags[@]}" --grace-period=1 -f /tmp/tmp-valid-pod.json 2>&1)
kube::test::if_has_string "${output_message}" '\-\-grace-period must have \-\-force specified'
## check replace --timeout requires --force
output_message=$(! kubectl replace "${kube_flags[@]}" --timeout=1s -f /tmp/tmp-valid-pod.json 2>&1)
kube::test::if_has_string "${output_message}" '\-\-timeout must have \-\-force specified'
#cleaning
rm /tmp/tmp-valid-pod.json
## replace of a cluster scoped resource can succeed
# Pre-condition: a node exists
kubectl create -f - "${kube_flags[@]}" << __EOF__
{
"kind": "Node",
"apiVersion": "v1",
"metadata": {
"name": "node-v1-test"
}
}
__EOF__
kubectl replace -f - "${kube_flags[@]}" << __EOF__
{
"kind": "Node",
"apiVersion": "v1",
"metadata": {
"name": "node-v1-test",
"annotations": {"a":"b"},
"resourceVersion": "0"
}
}
__EOF__
# Post-condition: the node command succeeds
kube::test::get_object_assert "node node-v1-test" "{{.metadata.annotations.a}}" 'b'
kubectl delete node node-v1-test "${kube_flags[@]}"
## kubectl edit can update the image field of a POD. tmp-editor.sh is a fake editor
echo -e "#!/bin/bash\n${SED} -i \"s/nginx/gcr.io\/google_containers\/serve_hostname/g\" \$1" > /tmp/tmp-editor.sh
chmod +x /tmp/tmp-editor.sh
# Pre-condition: valid-pod POD has image nginx
kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'nginx:'
[[ "$(EDITOR=/tmp/tmp-editor.sh kubectl edit "${kube_flags[@]}" pods/valid-pod --output-patch=true | grep Patch:)" ]]
# Post-condition: valid-pod POD has image gcr.io/google_containers/serve_hostname
kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'gcr.io/google_containers/serve_hostname:'
# cleaning
rm /tmp/tmp-editor.sh
## kubectl edit should work on Windows
[ "$(EDITOR=cat kubectl edit pod/valid-pod 2>&1 | grep 'Edit cancelled')" ]
[ "$(EDITOR=cat kubectl edit pod/valid-pod | grep 'name: valid-pod')" ]
[ "$(EDITOR=cat kubectl edit --windows-line-endings pod/valid-pod | file - | grep CRLF)" ]
[ ! "$(EDITOR=cat kubectl edit --windows-line-endings=false pod/valid-pod | file - | grep CRLF)" ]
[ "$(EDITOR=cat kubectl edit ns | grep 'kind: List')" ]
### Label POD YAML file locally without effecting the live pod.
# Pre-condition: name is valid-pod
kube::test::get_object_assert 'pod valid-pod' "{{${labels_field}.name}}" 'valid-pod'
# Command
output_message=$(kubectl label --local --overwrite -f hack/testdata/pod.yaml name=localonlyvalue -o yaml "${kube_flags[@]}")
echo $output_message
# Post-condition: name is still valid-pod in the live pod, but command output is the new value
kube::test::get_object_assert 'pod valid-pod' "{{${labels_field}.name}}" 'valid-pod'
kube::test::if_has_string "${output_message}" "localonlyvalue"
### Overwriting an existing label is not permitted
# Pre-condition: name is valid-pod
kube::test::get_object_assert 'pod valid-pod' "{{${labels_field}.name}}" 'valid-pod'
# Command
! kubectl label pods valid-pod name=valid-pod-super-sayan "${kube_flags[@]}"
# Post-condition: name is still valid-pod
kube::test::get_object_assert 'pod valid-pod' "{{${labels_field}.name}}" 'valid-pod'
### --overwrite must be used to overwrite existing label, can be applied to all resources
# Pre-condition: name is valid-pod
kube::test::get_object_assert 'pod valid-pod' "{{${labels_field}.name}}" 'valid-pod'
# Command
kubectl label --overwrite pods --all name=valid-pod-super-sayan "${kube_flags[@]}"
# Post-condition: name is valid-pod-super-sayan
kube::test::get_object_assert 'pod valid-pod' "{{${labels_field}.name}}" 'valid-pod-super-sayan'
### Delete POD by label
# Pre-condition: valid-pod POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
# Command
kubectl delete pods -l'name in (valid-pod-super-sayan)' --grace-period=0 --force "${kube_flags[@]}"
# Post-condition: valid-pod POD doesn't exist
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
### Create two PODs from 1 yaml file
# Pre-condition: no POD exists
create_and_use_new_namespace
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# Command
kubectl create -f test/fixtures/doc-yaml/user-guide/multi-pod.yaml "${kube_flags[@]}"
# Post-condition: redis-master and valid-pod PODs exist
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'redis-master:valid-pod:'
### Delete two PODs from 1 yaml file
# Pre-condition: redis-master and valid-pod PODs exist
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'redis-master:valid-pod:'
# Command
kubectl delete -f test/fixtures/doc-yaml/user-guide/multi-pod.yaml "${kube_flags[@]}"
# Post-condition: no PODs exist
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
## kubectl apply should update configuration annotations only if apply is already called
## 1. kubectl create doesn't set the annotation
# Pre-Condition: no POD exists
create_and_use_new_namespace
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# Command: create a pod "test-pod"
kubectl create -f hack/testdata/pod.yaml "${kube_flags[@]}"
# Post-Condition: pod "test-pod" is created
kube::test::get_object_assert 'pods test-pod' "{{${labels_field}.name}}" 'test-pod-label'
# Post-Condition: pod "test-pod" doesn't have configuration annotation
! [[ "$(kubectl get pods test-pod -o yaml "${kube_flags[@]}" | grep kubectl.kubernetes.io/last-applied-configuration)" ]]
## 2. kubectl replace doesn't set the annotation
kubectl get pods test-pod -o yaml "${kube_flags[@]}" | ${SED} 's/test-pod-label/test-pod-replaced/g' > "${KUBE_TEMP}"/test-pod-replace.yaml
# Command: replace the pod "test-pod"
kubectl replace -f "${KUBE_TEMP}"/test-pod-replace.yaml "${kube_flags[@]}"
# Post-Condition: pod "test-pod" is replaced
kube::test::get_object_assert 'pods test-pod' "{{${labels_field}.name}}" 'test-pod-replaced'
# Post-Condition: pod "test-pod" doesn't have configuration annotation
! [[ "$(kubectl get pods test-pod -o yaml "${kube_flags[@]}" | grep kubectl.kubernetes.io/last-applied-configuration)" ]]
## 3. kubectl apply does set the annotation
# Command: apply the pod "test-pod"
kubectl apply -f hack/testdata/pod-apply.yaml "${kube_flags[@]}"
# Post-Condition: pod "test-pod" is applied
kube::test::get_object_assert 'pods test-pod' "{{${labels_field}.name}}" 'test-pod-applied'
# Post-Condition: pod "test-pod" has configuration annotation
[[ "$(kubectl get pods test-pod -o yaml "${kube_flags[@]}" | grep kubectl.kubernetes.io/last-applied-configuration)" ]]
kubectl get pods test-pod -o yaml "${kube_flags[@]}" | grep kubectl.kubernetes.io/last-applied-configuration > "${KUBE_TEMP}"/annotation-configuration
## 4. kubectl replace updates an existing annotation
kubectl get pods test-pod -o yaml "${kube_flags[@]}" | ${SED} 's/test-pod-applied/test-pod-replaced/g' > "${KUBE_TEMP}"/test-pod-replace.yaml
# Command: replace the pod "test-pod"
kubectl replace -f "${KUBE_TEMP}"/test-pod-replace.yaml "${kube_flags[@]}"
# Post-Condition: pod "test-pod" is replaced
kube::test::get_object_assert 'pods test-pod' "{{${labels_field}.name}}" 'test-pod-replaced'
# Post-Condition: pod "test-pod" has configuration annotation, and it's updated (different from the annotation when it's applied)
[[ "$(kubectl get pods test-pod -o yaml "${kube_flags[@]}" | grep kubectl.kubernetes.io/last-applied-configuration)" ]]
kubectl get pods test-pod -o yaml "${kube_flags[@]}" | grep kubectl.kubernetes.io/last-applied-configuration > "${KUBE_TEMP}"/annotation-configuration-replaced
! [[ $(diff -q "${KUBE_TEMP}"/annotation-configuration "${KUBE_TEMP}"/annotation-configuration-replaced > /dev/null) ]]
# Clean up
rm "${KUBE_TEMP}"/test-pod-replace.yaml "${KUBE_TEMP}"/annotation-configuration "${KUBE_TEMP}"/annotation-configuration-replaced
kubectl delete pods test-pod "${kube_flags[@]}"
set +o nounset
set +o errexit
}
# runs specific kubectl create tests
run_create_secret_tests() {
set -o nounset
set -o errexit
### Create generic secret with explicit namespace
# Pre-condition: secret 'mysecret' does not exist
output_message=$(! kubectl get secrets mysecret 2>&1 "${kube_flags[@]}")
kube::test::if_has_string "${output_message}" 'secrets "mysecret" not found'
# Command
output_message=$(kubectl create "${kube_flags[@]}" secret generic mysecret --dry-run --from-literal=foo=bar -o jsonpath='{.metadata.namespace}' --namespace=user-specified)
# Post-condition: mysecret still not created since --dry-run was used
# Output from 'create' command should contain the specified --namespace value
failure_message=$(! kubectl get secrets mysecret 2>&1 "${kube_flags[@]}")
kube::test::if_has_string "${failure_message}" 'secrets "mysecret" not found'
kube::test::if_has_string "${output_message}" 'user-specified'
# Command
output_message=$(kubectl create "${kube_flags[@]}" secret generic mysecret --dry-run --from-literal=foo=bar -o jsonpath='{.metadata.namespace}')
# Post-condition: jsonpath for .metadata.namespace should be empty for object since --namespace was not explicitly specified
kube::test::if_empty_string "${output_message}"
kubectl create configmap tester-create-cm -o json --dry-run | kubectl create "${kube_flags[@]}" --raw /api/v1/namespaces/default/configmaps -f -
kubectl delete -ndefault "${kube_flags[@]}" configmap tester-create-cm
set +o nounset
set +o errexit
}
# Runs tests related to kubectl apply.
run_kubectl_apply_tests() {
set -o nounset
set -o errexit
create_and_use_new_namespace
kube::log::status "Testing kubectl apply"
## kubectl apply should create the resource that doesn't exist yet
# Pre-Condition: no POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# Command: apply a pod "test-pod" (doesn't exist) should create this pod
kubectl apply -f hack/testdata/pod.yaml "${kube_flags[@]}"
# Post-Condition: pod "test-pod" is created
kube::test::get_object_assert 'pods test-pod' "{{${labels_field}.name}}" 'test-pod-label'
# Post-Condition: pod "test-pod" has configuration annotation
[[ "$(kubectl get pods test-pod -o yaml "${kube_flags[@]}" | grep kubectl.kubernetes.io/last-applied-configuration)" ]]
# Clean up
kubectl delete pods test-pod "${kube_flags[@]}"
## kubectl apply should be able to clear defaulted fields.
# Pre-Condition: no deployment exists
kube::test::get_object_assert deployments "{{range.items}}{{$id_field}}:{{end}}" ''
# Command: apply a deployment "test-deployment-retainkeys" (doesn't exist) should create this deployment
kubectl apply -f hack/testdata/retainKeys/deployment/deployment-before.yaml "${kube_flags[@]}"
# Post-Condition: deployment "test-deployment-retainkeys" created
kube::test::get_object_assert deployments "{{range.items}}{{$id_field}}{{end}}" 'test-deployment-retainkeys'
# Post-Condition: deployment "test-deployment-retainkeys" has defaulted fields
[[ "$(kubectl get deployments test-deployment-retainkeys -o yaml "${kube_flags[@]}" | grep RollingUpdate)" ]]
[[ "$(kubectl get deployments test-deployment-retainkeys -o yaml "${kube_flags[@]}" | grep maxSurge)" ]]
[[ "$(kubectl get deployments test-deployment-retainkeys -o yaml "${kube_flags[@]}" | grep maxUnavailable)" ]]
[[ "$(kubectl get deployments test-deployment-retainkeys -o yaml "${kube_flags[@]}" | grep emptyDir)" ]]
# Command: apply a deployment "test-deployment-retainkeys" should clear
# defaulted fields and successfully update the deployment
[[ "$(kubectl apply -f hack/testdata/retainKeys/deployment/deployment-after.yaml "${kube_flags[@]}")" ]]
# Post-Condition: deployment "test-deployment-retainkeys" has updated fields
[[ "$(kubectl get deployments test-deployment-retainkeys -o yaml "${kube_flags[@]}" | grep Recreate)" ]]
! [[ "$(kubectl get deployments test-deployment-retainkeys -o yaml "${kube_flags[@]}" | grep RollingUpdate)" ]]
[[ "$(kubectl get deployments test-deployment-retainkeys -o yaml "${kube_flags[@]}" | grep hostPath)" ]]
! [[ "$(kubectl get deployments test-deployment-retainkeys -o yaml "${kube_flags[@]}" | grep emptyDir)" ]]
# Clean up
kubectl delete deployments test-deployment-retainkeys "${kube_flags[@]}"
## kubectl apply -f with label selector should only apply matching objects
# Pre-Condition: no POD exists
kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
# apply
kubectl apply -l unique-label=bingbang -f hack/testdata/filter "${kube_flags[@]}"
# check right pod exists
kube::test::get_object_assert 'pods selector-test-pod' "{{${labels_field}.name}}" 'selector-test-pod'
# check wrong pod doesn't exist
output_message=$(! kubectl get pods selector-test-pod-dont-apply 2>&1 "${kube_flags[@]}")
kube::test::if_has_string "${output_message}" 'pods "selector-test-pod-dont-apply" not found'