Add initial e2e tests

2026-04-05 17:27:51 +00:00 · 2022-11-09 17:19:59 +01:00 · 2022-11-09 17:19:59 +01:00 · 1145dbfe93
commit 1145dbfe93
parent b03cc3e7c8
13 changed files with 537 additions and 0 deletions
--- a/test/run-e2e-tests.sh
+++ b/test/run-e2e-tests.sh
@ -0,0 +1,134 @@
+#!/usr/bin/env bash
+
+# Copyright 2022 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.
+
+set -x
+set -o errexit
+set -o nounset
+
+# Tool versions
+K8S_VERSION=${KUBERNETES_VERSION:-v1.26.0}   # cf https://hub.docker.com/r/kindest/node/tags
+KIND_VERSION=${KIND_VERSION:-v0.17.0}        # cf https://github.com/kubernetes-sigs/kind/releases
+PROM_OPERATOR_VERSION=${PROM_OPERATOR_VERSION:-v0.62.0} # cf https://github.com/prometheus-operator/prometheus-operator/releases
+
+# Variables; set to empty if unbound/empty
+REGISTRY=${REGISTRY:-}
+KIND_E2E=${KIND_E2E:-}
+SKIP_INSTALL=${SKIP_INSTALL:-}
+SKIP_CLEAN_AFTER=${SKIP_CLEAN_AFTER:-}
+CLEAN_BEFORE=${CLEAN_BEFORE:-}
+
+# KUBECONFIG - will be overriden if a cluster is deployed with Kind
+KUBECONFIG=${KUBECONFIG:-"${HOME}/.kube/config"}
+
+# A temporary directory used by the tests
+E2E_DIR="${PWD}/.e2e"
+
+# The namespace where prometheus-adapter is deployed
+NAMESPACE="prometheus-adapter-e2e"
+
+if [[ -z "${REGISTRY}" && -z "${KIND_E2E}" ]]; then
+    echo -e "Either REGISTRY or KIND_E2E should be set."
+    exit 1
+fi
+
+function clean {
+    if [[ -n "${KIND_E2E}" ]]; then
+        kind delete cluster || true
+    else
+        kubectl delete -f ./deploy/manifests || true
+        kubectl delete -f ./test/prometheus-manifests || true
+        kubectl delete namespace "${NAMESPACE}" || true
+    fi
+
+    rm -rf "${E2E_DIR}"
+}
+
+if [[ -n "${CLEAN_BEFORE}" ]]; then
+    clean
+fi
+
+function on_exit {
+    local error_code="$?"
+
+    echo "Obtaining prometheus-adapter pod logs..."
+    kubectl logs -l app.kubernetes.io/name=prometheus-adapter -n "${NAMESPACE}" || true
+
+    if [[ -z "${SKIP_CLEAN_AFTER}" ]]; then
+        clean
+    fi
+
+    test "${error_code}" == 0 && return;
+}
+trap on_exit EXIT
+
+if [[ -d "${E2E_DIR}" ]]; then
+    echo -e "${E2E_DIR} already exists."
+    exit 1
+fi
+mkdir -p "${E2E_DIR}"
+
+if [[ -n "${KIND_E2E}" ]]; then
+    # Install kubectl and kind, if we did not set SKIP_INSTALL
+    if [[ -z "${SKIP_INSTALL}" ]]; then
+        BIN="${E2E_DIR}/bin"
+        mkdir -p "${BIN}"
+        curl -Lo "${BIN}/kubectl" "https://storage.googleapis.com/kubernetes-release/release/${K8S_VERSION}/bin/linux/amd64/kubectl" && chmod +x "${BIN}/kubectl"
+        curl -Lo "${BIN}/kind" "https://kind.sigs.k8s.io/dl/${KIND_VERSION}/kind-linux-amd64" && chmod +x "${BIN}/kind"
+        export PATH="${BIN}:${PATH}"
+    fi
+
+    kind create cluster --image "kindest/node:${K8S_VERSION}"
+
+    REGISTRY="localhost"
+
+    KUBECONFIG="${E2E_DIR}/kubeconfig"
+    kind get kubeconfig > "${KUBECONFIG}"
+fi
+
+# Create the test namespace
+kubectl create namespace "${NAMESPACE}"
+
+export REGISTRY
+IMAGE_NAME="${REGISTRY}/prometheus-adapter-$(go env GOARCH)"
+IMAGE_TAG="v$(cat VERSION)"
+
+if [[ -n "${KIND_E2E}" ]]; then
+    make container
+    kind load docker-image "${IMAGE_NAME}:${IMAGE_TAG}"
+else
+    make push
+fi
+
+# Install prometheus-operator
+kubectl apply -f "https://github.com/prometheus-operator/prometheus-operator/releases/download/${PROM_OPERATOR_VERSION}/bundle.yaml" --server-side
+
+# Install and setup prometheus
+kubectl apply -f ./test/prometheus-manifests --server-side
+
+# Customize prometheus-adapter manifests
+# TODO: use Kustomize or generate manifests from Jsonnet
+cp -r ./deploy/manifests "${E2E_DIR}/manifests"
+prom_url="http://prometheus.${NAMESPACE}.svc:9090/"
+sed -i -e "s|--prometheus-url=.*$|--prometheus-url=${prom_url}|g" "${E2E_DIR}/manifests/deployment.yaml"
+sed -i -e "s|image: .*$|image: ${IMAGE_NAME}:${IMAGE_TAG}|g" "${E2E_DIR}/manifests/deployment.yaml"
+find "${E2E_DIR}/manifests" -type f -exec sed -i -e "s|namespace: monitoring|namespace: ${NAMESPACE}|g" {} \;
+
+# Deploy prometheus-adapter
+kubectl apply -f "${E2E_DIR}/manifests" --server-side
+
+PROJECT_PREFIX="sigs.k8s.io/prometheus-adapter"
+export KUBECONFIG
+go test "${PROJECT_PREFIX}/test/e2e/" -v -count=1