kubernetes/hack/test-cmd.sh

#!/bin/bash

# Copyright 2014 The Kubernetes Authors All rights reserved.
#
# 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 command checks that the built commands can function together for
# simple scenarios.  It does not require Docker so it can run in travis.

set -o errexit
set -o nounset
set -o pipefail

KUBE_ROOT=$(dirname "${BASH_SOURCE}")/..
source "${KUBE_ROOT}/hack/lib/init.sh"
source "${KUBE_ROOT}/hack/lib/test.sh"

# Stops the running kubectl proxy, if there is one.
function stop-proxy()
{
  [[ -n "${PROXY_PID-}" ]] && kill "${PROXY_PID}" 1>&2 2>/dev/null
  PROXY_PID=
}

# Starts "kubect proxy" to test the client proxy. You may pass options, e.g.
# --api-prefix.
function start-proxy()
{
  stop-proxy

  kube::log::status "Starting kubectl proxy"
  # the --www and --www-prefix are just to make something definitely show up for
  # wait_for_url to see.
  kubectl proxy -p ${PROXY_PORT} --www=. --www-prefix=/healthz "$@" 1>&2 &
  PROXY_PID=$!
  kube::util::wait_for_url "http://127.0.0.1:${PROXY_PORT}/healthz" "kubectl proxy $@"
}

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}"

  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
}

trap cleanup EXIT SIGINT

kube::util::ensure-temp-dir
kube::etcd::start

ETCD_HOST=${ETCD_HOST:-127.0.0.1}
ETCD_PORT=${ETCD_PORT:-4001}
API_PORT=${API_PORT:-8080}
API_HOST=${API_HOST:-127.0.0.1}
KUBELET_PORT=${KUBELET_PORT:-10250}
KUBELET_HEALTHZ_PORT=${KUBELET_HEALTHZ_PORT:-10248}
CTLRMGR_PORT=${CTLRMGR_PORT:-10252}
PROXY_PORT=${PROXY_PORT:-8001}
PROXY_HOST=127.0.0.1 # kubectl only serves on localhost.

# ensure ~/.kube/config isn't loaded by tests
HOME="${KUBE_TEMP}"

# Check kubectl
kube::log::status "Running kubectl with no options"
"${KUBE_OUTPUT_HOSTBIN}/kubectl"

kube::log::status "Starting kubelet in masterless mode"
"${KUBE_OUTPUT_HOSTBIN}/kubelet" \
  --really_crash_for_testing=true \
  --root_dir=/tmp/kubelet.$$ \
  --cert_dir="${TMPDIR:-/tmp/}" \
  --docker_endpoint="fake://" \
  --hostname_override="127.0.0.1" \
  --address="127.0.0.1" \
  --port="$KUBELET_PORT" \
  --healthz_port="${KUBELET_HEALTHZ_PORT}" 1>&2 &
KUBELET_PID=$!
kube::util::wait_for_url "http://127.0.0.1:${KUBELET_HEALTHZ_PORT}/healthz" "kubelet(masterless)"
kill ${KUBELET_PID} 1>&2 2>/dev/null

kube::log::status "Starting kubelet in masterful mode"
"${KUBE_OUTPUT_HOSTBIN}/kubelet" \
  --really_crash_for_testing=true \
  --root_dir=/tmp/kubelet.$$ \
  --cert_dir="${TMPDIR:-/tmp/}" \
  --docker_endpoint="fake://" \
  --hostname_override="127.0.0.1" \
  --address="127.0.0.1" \
  --api_servers="${API_HOST}:${API_PORT}" \
  --port="$KUBELET_PORT" \
  --healthz_port="${KUBELET_HEALTHZ_PORT}" 1>&2 &
KUBELET_PID=$!

kube::util::wait_for_url "http://127.0.0.1:${KUBELET_HEALTHZ_PORT}/healthz" "kubelet"

# Start kube-apiserver
kube::log::status "Starting kube-apiserver"
KUBE_API_VERSIONS="v1" "${KUBE_OUTPUT_HOSTBIN}/kube-apiserver" \
  --address="127.0.0.1" \
  --public_address_override="127.0.0.1" \
  --port="${API_PORT}" \
  --etcd_servers="http://${ETCD_HOST}:${ETCD_PORT}" \
  --public_address_override="127.0.0.1" \
  --kubelet_port=${KUBELET_PORT} \
  --runtime_config=api/v1 \
  --cert_dir="${TMPDIR:-/tmp/}" \
  --service-cluster-ip-range="10.0.0.0/24" 1>&2 &
APISERVER_PID=$!

kube::util::wait_for_url "http://127.0.0.1:${API_PORT}/healthz" "apiserver"

# Start controller manager
kube::log::status "Starting controller-manager"
"${KUBE_OUTPUT_HOSTBIN}/kube-controller-manager" \
  --port="${CTLRMGR_PORT}" \
  --master="127.0.0.1:${API_PORT}" 1>&2 &
CTLRMGR_PID=$!

kube::util::wait_for_url "http://127.0.0.1:${CTLRMGR_PORT}/healthz" "controller-manager"
kube::util::wait_for_url "http://127.0.0.1:${API_PORT}/api/v1/nodes/127.0.0.1" "apiserver(nodes)"

# Expose kubectl directly for readability
PATH="${KUBE_OUTPUT_HOSTBIN}":$PATH

runTests() {
  version="$1"
  echo "Testing api version: $1"
  if [[ -z "${version}" ]]; then
    kube_flags=(
      -s "http://127.0.0.1:${API_PORT}"
      --match-server-version
    )
    [ "$(kubectl get nodes -t '{{ .apiVersion }}' "${kube_flags[@]}")" == "v1" ]
  else
    kube_flags=(
      -s "http://127.0.0.1:${API_PORT}"
      --match-server-version
      --api-version="${version}"
    )
    [ "$(kubectl get nodes -t '{{ .apiVersion }}' "${kube_flags[@]}")" == "${version}" ]
  fi
  id_field=".metadata.name"
  labels_field=".metadata.labels"
  service_selector_field=".spec.selector"
  rc_replicas_field=".spec.replicas"
  rc_status_replicas_field=".status.replicas"
  rc_container_image_field=".spec.template.spec.containers"
  port_field="(index .spec.ports 0).port"
  port_name="(index .spec.ports 0).name"
  image_field="(index .spec.containers 0).image"

  # Passing no arguments to create is an error
  ! kubectl create

  #######################
  # kubectl local proxy #
  #######################

  # Make sure the UI can be proxied
  start-proxy --api-prefix=/
  check-curl-proxy-code /ui 301
  check-curl-proxy-code /metrics 200
  if [[ -n "${version}" ]]; then
    check-curl-proxy-code /api/${version}/namespaces 200
  fi
  stop-proxy

  # Default proxy locks you into the /api path (legacy behavior)
  start-proxy
  check-curl-proxy-code /ui 404
  check-curl-proxy-code /metrics 404
  check-curl-proxy-code /api/ui 404
  if [[ -n "${version}" ]]; then
    check-curl-proxy-code /api/${version}/namespaces 200
  fi
  stop-proxy

  # Custom paths let you see everything.
  start-proxy --api-prefix=/custom
  check-curl-proxy-code /custom/ui 301
  check-curl-proxy-code /custom/metrics 200
  if [[ -n "${version}" ]]; then
    check-curl-proxy-code /custom/api/${version}/namespaces 200
  fi
  stop-proxy

  ###########################
  # POD creation / deletion #
  ###########################

  kube::log::status "Testing kubectl(${version}:pods)"

  ### Create POD valid-pod from JSON
  # Pre-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create "${kube_flags[@]}" -f docs/user-guide/limitrange/valid-pod.yaml
  # Post-condition: valid-pod POD is running
  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'
  # Describe command should print detailed information
  kube::test::describe_object_assert pods 'valid-pod' "Name:" "Image(s):" "Node:" "Labels:" "Status:" "Replication Controllers"

  ### 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 is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
  # Command
  kubectl delete pod valid-pod "${kube_flags[@]}"
  # Post-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''

  ### Create POD valid-pod from dumped YAML
  # Pre-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  echo "${output_pod}" | kubectl create -f - "${kube_flags[@]}"
  # Post-condition: valid-pod POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'

  ### Delete POD valid-pod from JSON
  # Pre-condition: valid-pod POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
  # Command
  kubectl delete -f docs/user-guide/limitrange/valid-pod.yaml "${kube_flags[@]}"
  # Post-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''

  ### Create POD redis-master from JSON
  # Pre-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create -f docs/user-guide/limitrange/valid-pod.yaml "${kube_flags[@]}"
  # Post-condition: valid-pod POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'

  ### Delete POD valid-pod with label
  # Pre-condition: valid-pod POD is running
  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[@]}"
  # Post-condition: no POD is running
  kube::test::get_object_assert "pods -l'name in (valid-pod)'" '{{range.items}}{{$id_field}}:{{end}}' ''

  ### Create POD valid-pod from JSON
  # Pre-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create -f docs/user-guide/limitrange/valid-pod.yaml "${kube_flags[@]}"
  # Post-condition: valid-pod POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'

  ### Delete PODs with no parameter mustn't kill everything
  # Pre-condition: valid-pod POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
  # Command
  ! kubectl delete pods "${kube_flags[@]}"
  # Post-condition: valid-pod POD is running
  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 is running
  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 is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'

  ### Delete all PODs
  # Pre-condition: valid-pod POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
  # Command
  kubectl delete --all pods "${kube_flags[@]}" # --all remove all the pods
  # Post-condition: no POD is running
  kube::test::get_object_assert "pods -l'name in (valid-pod)'" '{{range.items}}{{$id_field}}:{{end}}' ''

  ### Create two PODs
  # Pre-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create -f docs/user-guide/limitrange/valid-pod.yaml "${kube_flags[@]}"
  kubectl create -f examples/redis/redis-proxy.yaml "${kube_flags[@]}"
  # Post-condition: valid-pod and redis-proxy PODs are running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'redis-proxy:valid-pod:'

  ### Delete multiple PODs at once
  # Pre-condition: valid-pod and redis-proxy PODs are running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'redis-proxy:valid-pod:'
  # Command
  kubectl delete pods valid-pod redis-proxy "${kube_flags[@]}" # delete multiple pods at once
  # Post-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''

  ### Create two PODs
  # Pre-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create -f docs/user-guide/limitrange/valid-pod.yaml "${kube_flags[@]}"
  kubectl create -f examples/redis/redis-proxy.yaml "${kube_flags[@]}"
  # Post-condition: valid-pod and redis-proxy PODs are running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'redis-proxy:valid-pod:'

  ### Stop multiple PODs at once
  # Pre-condition: valid-pod and redis-proxy PODs are running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'redis-proxy:valid-pod:'
  # Command
  kubectl stop pods valid-pod redis-proxy "${kube_flags[@]}" # stop multiple pods at once
  # Post-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''

  ### Create valid-pod POD
  # Pre-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create -f docs/user-guide/limitrange/valid-pod.yaml "${kube_flags[@]}"
  # Post-condition: valid-pod POD is running
  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-conditon: valid-pod is labelled
  kube::test::get_object_assert 'pod valid-pod' "{{range$labels_field}}{{.}}:{{end}}" 'valid-pod:new-valid-pod:'

  ### Delete POD by label
  # Pre-condition: valid-pod POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
  # Command
  kubectl delete pods -lnew-name=new-valid-pod "${kube_flags[@]}"
  # Post-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''

  ### Create valid-pod POD
  # Pre-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create -f docs/user-guide/limitrange/valid-pod.yaml "${kube_flags[@]}"
  # Post-condition: valid-pod POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'

  ## Patch pod can change image
  # Command
  kubectl patch "${kube_flags[@]}" pod valid-pod -p='{"spec":{"containers":[{"name": "kubernetes-serve-hostname", "image": "nginx"}]}}'
  # Post-condition: valid-pod POD has image nginx
  kube::test::get_object_assert pods "{{range.items}}{{$image_field}}:{{end}}" 'nginx:'

  ## --force replace pod can change other field, e.g., spec.container.name
  # Command
  kubectl get "${kube_flags[@]}" pod valid-pod -o json | sed 's/"kubernetes-serve-hostname"/"replaced-k8s-serve-hostname"/g' > tmp-valid-pod.json
  kubectl replace "${kube_flags[@]}" --force -f 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'
  rm tmp-valid-pod.json

  ### 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 is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
  # Command
  kubectl delete pods -l'name in (valid-pod-super-sayan)' "${kube_flags[@]}"
  # Post-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''

  ### Create two PODs from 1 yaml file
  # Pre-condition: no POD is running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create -f docs/user-guide/multi-pod.yaml "${kube_flags[@]}"
  # Post-condition: valid-pod and redis-proxy PODs are running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'redis-master:redis-proxy:'

  ### Delete two PODs from 1 yaml file
  # Pre-condition: redis-master and redis-proxy PODs are running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" 'redis-master:redis-proxy:'
  # Command
  kubectl delete -f docs/user-guide/multi-pod.yaml "${kube_flags[@]}"
  # Post-condition: no PODs are running
  kube::test::get_object_assert pods "{{range.items}}{{$id_field}}:{{end}}" ''

  ##############
  # Namespaces #
  ##############

  ### Create POD valid-pod in specific namespace
  # Pre-condition: no POD is running
  kube::test::get_object_assert 'pods --namespace=other' "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create "${kube_flags[@]}" --namespace=other -f docs/user-guide/limitrange/valid-pod.yaml
  # Post-condition: valid-pod POD is running
  kube::test::get_object_assert 'pods --namespace=other' "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'

  ### Delete POD valid-pod in specific namespace
  # Pre-condition: valid-pod POD is running
  kube::test::get_object_assert 'pods --namespace=other' "{{range.items}}{{$id_field}}:{{end}}" 'valid-pod:'
  # Command
  kubectl delete "${kube_flags[@]}" pod --namespace=other valid-pod
  # Post-condition: no POD is running
  kube::test::get_object_assert 'pods --namespace=other' "{{range.items}}{{$id_field}}:{{end}}" ''


  #################
  # Pod templates #
  #################

  ### Create PODTEMPLATE
  # Pre-condition: no PODTEMPLATE
  kube::test::get_object_assert podtemplates "{{range.items}}{{.metadata.name}}:{{end}}" ''
  # Command
  kubectl create -f docs/user-guide/walkthrough/podtemplate.json "${kube_flags[@]}"
  # Post-condition: nginx PODTEMPLATE is available
  kube::test::get_object_assert podtemplates "{{range.items}}{{.metadata.name}}:{{end}}" 'nginx:'

  ### Printing pod templates works
  kubectl get podtemplates "${kube_flags[@]}"
  [[ "$(kubectl get podtemplates -o yaml "${kube_flags[@]}" | grep nginx)" ]]

  ### Delete nginx pod template by name
  # Pre-condition: nginx pod template is available
  kube::test::get_object_assert podtemplates "{{range.items}}{{.metadata.name}}:{{end}}" 'nginx:'
  # Command
  kubectl delete podtemplate nginx "${kube_flags[@]}"
  # Post-condition: No templates exist
  kube::test::get_object_assert podtemplate "{{range.items}}{{.metadata.name}}:{{end}}" ''


  ############
  # Services #
  ############

  kube::log::status "Testing kubectl(${version}:services)"

  ### Create redis-master service from JSON
  # Pre-condition: Only the default kubernetes services are running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:'
  # Command
  kubectl create -f examples/guestbook/redis-master-service.yaml "${kube_flags[@]}"
  # Post-condition: redis-master service is running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:redis-master:'
  # Describe command should print detailed information
  kube::test::describe_object_assert services 'redis-master' "Name:" "Labels:" "Selector:" "IP:" "Port:" "Endpoints:" "Session Affinity:"

  ### Dump current redis-master service
  output_service=$(kubectl get service redis-master -o json --output-version=v1 "${kube_flags[@]}")

  ### Delete redis-master-service by id
  # Pre-condition: redis-master service is running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:redis-master:'
  # Command
  kubectl delete service redis-master "${kube_flags[@]}"
  # Post-condition: Only the default kubernetes services are running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:'

  ### Create redis-master-service from dumped JSON
  # Pre-condition: Only the default kubernetes services are running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:'
  # Command
  echo "${output_service}" | kubectl create -f - "${kube_flags[@]}"
  # Post-condition: redis-master service is running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:redis-master:'

  ### Create redis-master-${version}-test service
  # Pre-condition: redis-master-service service is running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:redis-master:'
  # Command
  kubectl create -f - "${kube_flags[@]}" << __EOF__
{
  "kind": "Service",
  "apiVersion": "v1",
  "metadata": {
    "name": "service-${version}-test"
  },
  "spec": {
    "ports": [
      {
        "protocol": "TCP",
        "port": 80,
        "targetPort": 80
      }
    ]
  }
}
__EOF__
  # Post-condition:redis-master-service service is running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:redis-master:service-.*-test:'

  ### Identity
  kubectl get service "${kube_flags[@]}" service-${version}-test -o json | kubectl replace "${kube_flags[@]}" -f -

  ### Delete services by id
  # Pre-condition: redis-master-service service is running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:redis-master:service-.*-test:'
  # Command
  kubectl delete service redis-master "${kube_flags[@]}"
  kubectl delete service "service-${version}-test" "${kube_flags[@]}"
  # Post-condition: Only the default kubernetes services are running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:'

  ### Create two services
  # Pre-condition: Only the default kubernetes services are running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:'
  # Command
  kubectl create -f examples/guestbook/redis-master-service.yaml "${kube_flags[@]}"
  kubectl create -f examples/guestbook/redis-slave-service.yaml "${kube_flags[@]}"
  # Post-condition: redis-master and redis-slave services are running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:redis-master:redis-slave:'

  ### Delete multiple services at once
  # Pre-condition: redis-master and redis-slave services are running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:redis-master:redis-slave:'
  # Command
  kubectl delete services redis-master redis-slave "${kube_flags[@]}" # delete multiple services at once
  # Post-condition: Only the default kubernetes services are running
  kube::test::get_object_assert services "{{range.items}}{{$id_field}}:{{end}}" 'kubernetes:'


  ###########################
  # Replication controllers #
  ###########################

  kube::log::status "Testing kubectl(${version}:replicationcontrollers)"

  ### Create and stop controller, make sure it doesn't leak pods
  # Pre-condition: no replication controller is running
  kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create -f examples/guestbook/frontend-controller.yaml "${kube_flags[@]}"
  kubectl stop rc frontend "${kube_flags[@]}"
  # Post-condition: no pods from frontend controller
  kube::test::get_object_assert 'pods -l "name=frontend"' "{{range.items}}{{$id_field}}:{{end}}" ''

  ### Create replication controller frontend from JSON
  # Pre-condition: no replication controller is running
  kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create -f examples/guestbook/frontend-controller.yaml "${kube_flags[@]}"
  # Post-condition: frontend replication controller is running
  kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" 'frontend:'
  # Describe command should print detailed information
  kube::test::describe_object_assert rc 'frontend' "Name:" "Image(s):" "Labels:" "Selector:" "Replicas:" "Pods Status:"

  ### Scale replication controller frontend with current-replicas and replicas
  # Pre-condition: 3 replicas
  kube::test::get_object_assert 'rc frontend' "{{$rc_replicas_field}}" '3'
  # Command
  kubectl scale --current-replicas=3 --replicas=2 replicationcontrollers frontend "${kube_flags[@]}"
  # Post-condition: 2 replicas
  kube::test::get_object_assert 'rc frontend' "{{$rc_replicas_field}}" '2'

  ### Scale replication controller frontend with (wrong) current-replicas and replicas
  # Pre-condition: 2 replicas
  kube::test::get_object_assert 'rc frontend' "{{$rc_replicas_field}}" '2'
  # Command
  ! kubectl scale --current-replicas=3 --replicas=2 replicationcontrollers frontend "${kube_flags[@]}"
  # Post-condition: nothing changed
  kube::test::get_object_assert 'rc frontend' "{{$rc_replicas_field}}" '2'

  ### Scale replication controller frontend with replicas only
  # Pre-condition: 2 replicas
  kube::test::get_object_assert 'rc frontend' "{{$rc_replicas_field}}" '2'
  # Command
  kubectl scale  --replicas=3 replicationcontrollers frontend "${kube_flags[@]}"
  # Post-condition: 3 replicas
  kube::test::get_object_assert 'rc frontend' "{{$rc_replicas_field}}" '3'

  ### Scale multiple replication controllers
  kubectl create -f examples/guestbook/redis-master-controller.yaml "${kube_flags[@]}"
  kubectl create -f examples/guestbook/redis-slave-controller.yaml "${kube_flags[@]}"
  # Command
  kubectl scale rc/redis-master rc/redis-slave --replicas=4
  # Post-condition: 4 replicas each
  kube::test::get_object_assert 'rc redis-master' "{{$rc_replicas_field}}" '4'
  kube::test::get_object_assert 'rc redis-slave' "{{$rc_replicas_field}}" '4'
  # Clean-up
  kubectl delete rc redis-{master,slave} "${kube_flags[@]}"

  ### Expose replication controller as service
  # Pre-condition: 3 replicas
  kube::test::get_object_assert 'rc frontend' "{{$rc_replicas_field}}" '3'
  # Command
  kubectl expose rc frontend --port=80 "${kube_flags[@]}"
  # Post-condition: service exists and the port is unnamed
  kube::test::get_object_assert 'service frontend' "{{$port_name}} {{$port_field}}" '<no value> 80'
  # Command
  kubectl expose service frontend --port=443 --name=frontend-2 "${kube_flags[@]}"
  # Post-condition: service exists and the port is unnamed
  kube::test::get_object_assert 'service frontend-2' "{{$port_name}} {{$port_field}}" '<no value> 443'
  # Command
  kubectl create -f docs/user-guide/limitrange/valid-pod.yaml "${kube_flags[@]}"
  kubectl expose pod valid-pod --port=444 --name=frontend-3 "${kube_flags[@]}"
  # Post-condition: service exists and the port is unnamed
  kube::test::get_object_assert 'service frontend-3' "{{$port_name}} {{$port_field}}" '<no value> 444'
  # Create a service using service/v1 generator
  kubectl expose rc frontend --port=80 --name=frontend-4 --generator=service/v1 "${kube_flags[@]}"
  # Post-condition: service exists and the port is named default.
  kube::test::get_object_assert 'service frontend-4' "{{$port_name}} {{$port_field}}" 'default 80'
  # Verify that expose service works without specifying a port.
  kubectl expose service frontend --name=frontend-5 "${kube_flags[@]}"
  # Post-condition: service exists with the same port as the original service.
  kube::test::get_object_assert 'service frontend-5' "{{$port_field}}" '80'
  # Cleanup services
  kubectl delete pod valid-pod "${kube_flags[@]}"
  kubectl delete service frontend{,-2,-3,-4,-5} "${kube_flags[@]}"

  ### Perform a rolling update with --image
  # Command
  kubectl rolling-update frontend --image=kubernetes/pause --update-period=10ns --poll-interval=10ms "${kube_flags[@]}"
  # Post-condition: current image IS kubernetes/pause
  kube::test::get_object_assert 'rc frontend' '{{range \$c:=$rc_container_image_field}} {{\$c.image}} {{end}}' ' +kubernetes/pause +'

  ### Delete replication controller with id
  # Pre-condition: frontend replication controller is running
  kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" 'frontend:'
  # Command
  kubectl stop rc frontend "${kube_flags[@]}"
  # Post-condition: no replication controller is running
  kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" ''

  ### Create two replication controllers
  # Pre-condition: no replication controller is running
  kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" ''
  # Command
  kubectl create -f examples/guestbook/frontend-controller.yaml "${kube_flags[@]}"
  kubectl create -f examples/guestbook/redis-slave-controller.yaml "${kube_flags[@]}"
  # Post-condition: frontend and redis-slave
  kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" 'frontend:redis-slave:'

  ### Delete multiple controllers at once
  # Pre-condition: frontend and redis-slave
  kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" 'frontend:redis-slave:'
  # Command
  kubectl stop rc frontend redis-slave "${kube_flags[@]}" # delete multiple controllers at once
  # Post-condition: no replication controller is running
  kube::test::get_object_assert rc "{{range.items}}{{$id_field}}:{{end}}" ''

  ######################
  # Persistent Volumes #
  ######################

  ### Create and delete persistent volume examples
  # Pre-condition: no persistent volumes currently exist
  kube::test::get_object_assert pv "{{range.items}}{{.$id_field}}:{{end}}" ''
  # Command
  kubectl create -f docs/user-guide/persistent-volumes/volumes/local-01.yaml "${kube_flags[@]}"
  kube::test::get_object_assert pv "{{range.items}}{{.$id_field}}:{{end}}" 'pv0001:'
  kubectl delete pv pv0001 "${kube_flags[@]}"
  kubectl create -f docs/user-guide/persistent-volumes/volumes/local-02.yaml "${kube_flags[@]}"
  kube::test::get_object_assert pv "{{range.items}}{{.$id_field}}:{{end}}" 'pv0002:'
  kubectl delete pv pv0002 "${kube_flags[@]}"
  kubectl create -f docs/user-guide/persistent-volumes/volumes/gce.yaml "${kube_flags[@]}"
  kube::test::get_object_assert pv "{{range.items}}{{.$id_field}}:{{end}}" 'pv0003:'
  kubectl delete pv pv0003 "${kube_flags[@]}"
  # Post-condition: no PVs
  kube::test::get_object_assert pv "{{range.items}}{{.$id_field}}:{{end}}" ''

  ############################
  # Persistent Volume Claims #
  ############################

  ### Create and delete persistent volume claim examples
  # Pre-condition: no persistent volume claims currently exist
  kube::test::get_object_assert pvc "{{range.items}}{{.$id_field}}:{{end}}" ''
  # Command
  kubectl create -f docs/user-guide/persistent-volumes/claims/claim-01.yaml "${kube_flags[@]}"
  kube::test::get_object_assert pvc "{{range.items}}{{.$id_field}}:{{end}}" 'myclaim-1:'
  kubectl delete pvc myclaim-1 "${kube_flags[@]}"

  kubectl create -f docs/user-guide/persistent-volumes/claims/claim-02.yaml "${kube_flags[@]}"
  kube::test::get_object_assert pvc "{{range.items}}{{.$id_field}}:{{end}}" 'myclaim-2:'
  kubectl delete pvc myclaim-2 "${kube_flags[@]}"

  kubectl create -f docs/user-guide/persistent-volumes/claims/claim-03.json "${kube_flags[@]}"
  kube::test::get_object_assert pvc "{{range.items}}{{.$id_field}}:{{end}}" 'myclaim-3:'
  kubectl delete pvc myclaim-3 "${kube_flags[@]}"
  # Post-condition: no PVCs
  kube::test::get_object_assert pvc "{{range.items}}{{.$id_field}}:{{end}}" ''



  #########
  # Nodes #
  #########

  kube::log::status "Testing kubectl(${version}:nodes)"

  kube::test::get_object_assert nodes "{{range.items}}{{$id_field}}:{{end}}" '127.0.0.1:'

  kube::test::describe_object_assert nodes "127.0.0.1" "Name:" "Labels:" "CreationTimestamp:" "Conditions:" "Addresses:" "Capacity:" "Pods:"

  ### kubectl patch update can mark node unschedulable
  # Pre-condition: node is schedulable
  kube::test::get_object_assert "nodes 127.0.0.1" "{{.spec.unschedulable}}" '<no value>'
  kubectl patch "${kube_flags[@]}" nodes "127.0.0.1" -p='{"spec":{"unschedulable":true}}'
  # Post-condition: node is unschedulable
  kube::test::get_object_assert "nodes 127.0.0.1" "{{.spec.unschedulable}}" 'true'
  kubectl patch "${kube_flags[@]}" nodes "127.0.0.1" -p='{"spec":{"unschedulable":null}}'
  # Post-condition: node is schedulable
  kube::test::get_object_assert "nodes 127.0.0.1" "{{.spec.unschedulable}}" '<no value>'


  #####################
  # Retrieve multiple #
  #####################

  kube::log::status "Testing kubectl(${version}:multiget)"
  kube::test::get_object_assert 'nodes/127.0.0.1 service/kubernetes' "{{range.items}}{{$id_field}}:{{end}}" '127.0.0.1:kubernetes:'


  #####################
  # Resource aliasing #
  #####################

  kube::log::status "Testing resource aliasing"
  kubectl create -f examples/cassandra/cassandra-controller.yaml "${kube_flags[@]}"
  kubectl scale rc cassandra --replicas=1 "${kube_flags[@]}"
  kubectl create -f examples/cassandra/cassandra-service.yaml "${kube_flags[@]}"
  kube::test::get_object_assert "all -l'name=cassandra'" "{{range.items}}{{range .metadata.labels}}{{.}}:{{end}}{{end}}" 'cassandra:cassandra:cassandra:'
  kubectl delete all -l name=cassandra "${kube_flags[@]}"


  ###########
  # Swagger #
  ###########

  if [[ -n "${version}" ]]; then
    # Verify schema
    file="${KUBE_TEMP}/schema-${version}.json"
    curl -s "http://127.0.0.1:${API_PORT}/swaggerapi/api/${version}" > "${file}"
    [[ "$(grep "list of returned" "${file}")" ]]
    [[ "$(grep "list of pods" "${file}")" ]]
    [[ "$(grep "watch for changes to the described resources" "${file}")" ]]
  fi

  kube::test::clear_all
}

kube_api_versions=(
  ""
  v1
)
for version in "${kube_api_versions[@]}"; do
  KUBE_API_VERSIONS="v1" runTests "${version}"
done

kube::log::status "TEST PASSED"