From fed04ad692ea5cca65ffddbc6be6404d9bc16e7f Mon Sep 17 00:00:00 2001
From: stefanprodan <stefan.prodan@gmail.com>
Date: Tue, 6 Aug 2019 21:22:58 +0300
Subject: [PATCH] Add e2e testing with Kubernetes Kind and Helm

---
 .circleci/config.yml |  9 +++++++++
 README.md            |  3 ++-
 e2e/bootstrap.sh     | 34 ++++++++++++++++++++++++++++++++++
 e2e/install.sh       | 17 +++++++++++++++++
 e2e/test.sh          | 12 ++++++++++++
 5 files changed, 74 insertions(+), 1 deletion(-)
 create mode 100755 e2e/bootstrap.sh
 create mode 100755 e2e/install.sh
 create mode 100755 e2e/test.sh

diff --git a/.circleci/config.yml b/.circleci/config.yml
index e06f074..e7531f5 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,5 +1,13 @@
 version: 2.1
 jobs:
+  e2e-kubernetes:
+    machine: true
+    steps:
+      - checkout
+      - run: e2e/bootstrap.sh
+      - run: e2e/install.sh
+      - run: e2e/test.sh
+
   build-container:
     docker:
       - image: circleci/golang:1.12
@@ -71,6 +79,7 @@ workflows:
   build-test:
     jobs:
       - build-container
+      - e2e-kubernetes
   release:
     jobs:
       - build-container:
diff --git a/README.md b/README.md
index 8dcd84e..0462d98 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,8 @@ Specifications:
 * Structured logging with zap 
 * 12-factor app with viper
 * Fault injection (random errors and latency)
-* Helm chart
+* Helm and Kustomize installers
+* End-to-End testing with Kubernetes Kind and Helm
 
 Web API:
 
diff --git a/e2e/bootstrap.sh b/e2e/bootstrap.sh
new file mode 100755
index 0000000..7fa66c6
--- /dev/null
+++ b/e2e/bootstrap.sh
@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+
+set -o errexit
+
+REPO_ROOT=$(git rev-parse --show-toplevel)
+KIND_VERSION=v0.4.0
+
+if [[ "$1" ]]; then
+  KIND_VERSION=$1
+fi
+
+echo ">>> Installing kubectl"
+curl -sLO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && \
+chmod +x kubectl && \
+sudo mv kubectl /usr/local/bin/
+
+echo ">>> Installing kind"
+curl -sSLo kind "https://github.com/kubernetes-sigs/kind/releases/download/$KIND_VERSION/kind-linux-amd64"
+chmod +x kind
+sudo mv kind /usr/local/bin/kind
+
+echo ">>> Creating kind cluster"
+kind create cluster --wait 5m
+
+export KUBECONFIG="$(kind get kubeconfig-path --name="kind")"
+kubectl get pods --all-namespaces
+
+echo ">>> Installing Helm"
+curl https://raw.githubusercontent.com/kubernetes/helm/master/scripts/get | bash
+
+echo '>>> Installing Tiller'
+kubectl --namespace kube-system create sa tiller
+kubectl create clusterrolebinding tiller-cluster-rule --clusterrole=cluster-admin --serviceaccount=kube-system:tiller
+helm init --service-account tiller --upgrade --wait
diff --git a/e2e/install.sh b/e2e/install.sh
new file mode 100755
index 0000000..3d2f9ac
--- /dev/null
+++ b/e2e/install.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+set -o errexit
+
+REPO_ROOT=$(git rev-parse --show-toplevel)
+export KUBECONFIG="$(kind get kubeconfig-path --name="kind")"
+
+echo ">>> Building container"
+docker build -t test/podinfo:latest .
+
+echo '>>> Loading image in Kind'
+kind load docker-image test/podinfo:latest
+
+echo '>>> Installing'
+helm upgrade -i podinfo ${REPO_ROOT}/charts/podinfo --namespace=default
+kubectl set image deployment/podinfo podinfo=test/podinfo:latest
+kubectl rollout status deployment/podinfo
diff --git a/e2e/test.sh b/e2e/test.sh
new file mode 100755
index 0000000..3dcb459
--- /dev/null
+++ b/e2e/test.sh
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -o errexit
+
+REPO_ROOT=$(git rev-parse --show-toplevel)
+export KUBECONFIG="$(kind get kubeconfig-path --name="kind")"
+
+echo '>>> Testing'
+helm test podinfo
+
+echo '>>> Test logs'
+kubectl logs -l app=podinfo