105 lines
4.2 KiB
Bash
Executable File
105 lines
4.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# IMPORTS -----------------------------------------------------------------------------------------------------------
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# determine working directory to use to relative paths irrespective of starting directory
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dir="${BASH_SOURCE%/*}"
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if [[ ! -d "${dir}" ]]; then dir="${PWD}"; fi
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. "${dir}/lib/output.sh"
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. "${dir}/lib/ensure.sh"
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# GLOBALS -----------------------------------------------------------------------------------------------------------
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test_ns="helmfile-tests-$(date +"%Y%m%d-%H%M%S")"
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helmfile="./helmfile --namespace=${test_ns}"
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helm="helm --kube-context=minikube"
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kubectl="kubectl --context=minikube --namespace=${test_ns}"
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# FUNCTIONS ----------------------------------------------------------------------------------------------------------
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function wait_deploy_ready() {
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${kubectl} rollout status deployment ${1}
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while [ "$(${kubectl} get deploy ${1} -o=jsonpath='{.status.readyReplicas}')" == "0" ]; do
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info "Waiting for deployment ${1} to be ready"
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sleep 1
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done
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}
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function retry() {
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local -r max=${1}
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local -r command=${2}
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n=0
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retry_result=0
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until [ ${n} -ge ${max} ]; do
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info "Executing: ${command} (attempt $((n+1)))"
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${command} && break # substitute your command here
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retry_result=$?
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n=$[$n+1]
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# approximated binary exponential backoff to reduce flakiness
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sleep $((n ** 2))
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done
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}
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# SETUP --------------------------------------------------------------------------------------------------------------
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set -e
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info "Using namespace: ${test_ns}"
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info "Using Helm version: $(helm version --short --client | grep -o v.*$)"
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${helm} init --wait --override spec.template.spec.automountServiceAccountToken=true
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${helm} plugin install https://github.com/databus23/helm-diff --version master
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${kubectl} get namespace ${test_ns} &> /dev/null && warn "Namespace ${test_ns} exists, from a previous test run?"
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$kubectl create namespace ${test_ns} || fail "Could not create namespace ${test_ns}"
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trap "{ $kubectl delete namespace ${test_ns}; }" EXIT # remove namespace whenever we exit this script
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# TEST CASES----------------------------------------------------------------------------------------------------------
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test_start "happypath - simple rollout of httpbin chart"
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info "Diffing ${dir}/happypath.yaml"
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bash -c "${helmfile} -f ${dir}/happypath.yaml diff --detailed-exitcode; code="'$?'"; [ "'${code}'" -eq 2 ]" || fail "unexpected exit code returned by helmfile diff"
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info "Templating ${dir}/happypath.yaml"
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${helmfile} -f ${dir}/happypath.yaml template
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code=$?
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[ ${code} -eq 0 ] || fail "unexpected exit code returned by helmfile template: ${code}"
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info "Syncing ${dir}/happypath.yaml"
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${helmfile} -f ${dir}/happypath.yaml sync
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wait_deploy_ready httpbin-httpbin
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retry 5 "curl --fail $(minikube service --url --namespace=${test_ns} httpbin-httpbin)/status/200"
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[ ${retry_result} -eq 0 ] || fail "httpbin failed to return 200 OK"
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info "Applying ${dir}/happypath.yaml"
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${helmfile} -f ${dir}/happypath.yaml apply
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code=$?
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[ ${code} -eq 0 ] || fail "unexpected exit code returned by helmfile apply: ${code}"
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info "Locking dependencies"
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${helmfile} -f ${dir}/happypath.yaml deps
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code=$?
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[ ${code} -eq 0 ] || fail "unexpected exit code returned by helmfile deps: ${code}"
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info "Applying ${dir}/happypath.yaml with locked dependencies"
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${helmfile} -f ${dir}/happypath.yaml apply
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code=$?
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[ ${code} -eq 0 ] || fail "unexpected exit code returned by helmfile apply: ${code}"
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info "Deleting release"
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${helmfile} -f ${dir}/happypath.yaml delete
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${helm} status --namespace=${test_ns} httpbin &> /dev/null && fail "release should not exist anymore after a delete"
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info "Ensuring \"helmfile delete\" doesn't fail when no releases installed"
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${helmfile} -f ${dir}/happypath.yaml delete || fail "\"helmfile delete\" shouldn't fail when there are no installed releases"
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info "Ensuring \"helmfile template\" output does contain only YAML docs"
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(${helmfile} -f ${dir}/happypath.yaml template | kubectl apply -f -) || fail "\"helmfile template | kubectl apply -f -\" shouldn't fail"
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test_pass "happypath"
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# ALL DONE -----------------------------------------------------------------------------------------------------------
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all_tests_passed
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