Add CircleCI config (hashicorp#254)

* Upgrade to terraform 0.12

* Add terraform to the Test.dockerfile

* Add CircleCI config

* Rename .circleci/config.yaml to .circleci/config.yml

* Use env variable for the terraform version

* Switch to hashicorpdev/consul-helm-test Docker image

* Specify directory for terraform commands

Also, add a clarifying comment describing which image is being used

* Update .circleci/config.yml

Co-Authored-By: Luke Kysow <1034429+lkysow@users.noreply.github.com>

* Only run acceptance tests on the changes to master

Plus, minor changes to terraform commands.

* Split out acceptance tests into multiple steps for clarity

* use multiple steps rather than a single step
* 'terraform destroy' step runs always, even if previous steps fail
* decrease GKE cluster node pool from 5 to 3 to make spin ups faster
* wait for Helm to initialize to make sure tiller is ready
* use the latest consul-helm-test docker image

.circleci/config.yml

@@ -0,0 +1,51 @@
+version: 2
+jobs:
+  unit:
+    docker:
+      # This image is built from test/docker/Test.dockerfile
+      - image: hashicorpdev/consul-helm-test:0.3.0
+
+    steps:
+      - checkout
+
+      - run:
+          name: Run Unit Tests
+          command: bats ./test/unit
+
+  acceptance:
+    docker:
+      # This image is build from test/docker/Test.dockerfile
+      - image: hashicorpdev/consul-helm-test:0.3.0
+
+    steps:
+      - checkout
+
+      - run:
+          name: terraform init & apply
+          command: |
+            terraform init test/terraform
+            echo "${GOOGLE_CREDENTIALS}" | gcloud auth activate-service-account --key-file=-
+
+            terraform apply -var project=${CLOUDSDK_CORE_PROJECT} -var init_cli=true -auto-approve test/terraform
+
+      - run:
+          name: Run acceptance tests
+          command: bats ./test/acceptance
+
+      - run:
+          name: terraform destroy
+          command: |
+            terraform destroy -auto-approve
+          when: always
+
+workflows:
+  version: 2
+  test:
+    jobs:
+      - unit
+      - acceptance:
+          requires:
+            - unit
+          filters:
+            branches:
+              only: master

test/docker/Test.dockerfile

@@ -10,6 +10,7 @@ FROM alpine:latest
 WORKDIR /root
 
 ENV BATS_VERSION "1.1.0"
+ENV TERRAFORM_VERSION "0.12.10"
 
 # base packages
 RUN apk update && apk add --no-cache --virtual .build-deps \
@@ -31,6 +32,11 @@ RUN curl -OL https://dl.google.com/dl/cloudsdk/channels/rapid/install_google_clo
     bash install_google_cloud_sdk.bash --disable-prompts --install-dir='/root/' && \
     ln -s /root/google-cloud-sdk/bin/gcloud /usr/local/bin/gcloud
 
+# terraform
+RUN curl -sSL https://releases.hashicorp.com/terraform/${TERRAFORM_VERSION}/terraform_${TERRAFORM_VERSION}_linux_amd64.zip -o /tmp/tf.zip \
+    && unzip /tmp/tf.zip  \
+    && ln -s /root/terraform /usr/local/bin/terraform
+
 # kubectl
 RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && \
     chmod +x ./kubectl && \
@@ -42,4 +48,4 @@ RUN curl https://raw.githubusercontent.com/kubernetes/helm/master/scripts/get |
 # bats
 RUN curl -sSL https://github.com/bats-core/bats-core/archive/v${BATS_VERSION}.tar.gz -o /tmp/bats.tgz \
     && tar -zxf /tmp/bats.tgz -C /tmp \
-    && /bin/bash /tmp/bats-core-$BATS_VERSION/install.sh /usr/local
+    && /bin/bash /tmp/bats-core-${BATS_VERSION}/install.sh /usr/local

test/terraform/main.tf

@@ -3,32 +3,32 @@ locals {
 }
 
 provider "google" {
-  project = "${var.project}"
+  project = var.project
 }
 
 resource "random_id" "suffix" {
   byte_length = 4
 }
 
 data "google_container_engine_versions" "main" {
-  zone = "${var.zone}"
+  location = var.zone
 }
 
 resource "google_container_cluster" "cluster" {
   name               = "consul-k8s-${random_id.suffix.dec}"
-  project            = "${var.project}"
+  project            = var.project
   enable_legacy_abac = true
-  initial_node_count = 5
-  zone               = "${var.zone}"
-  min_master_version = "${data.google_container_engine_versions.main.latest_master_version}"
-  node_version       = "${data.google_container_engine_versions.main.latest_node_version}"
+  initial_node_count = 3
+  location           = var.zone
+  min_master_version = data.google_container_engine_versions.main.latest_master_version
+  node_version       = data.google_container_engine_versions.main.latest_node_version
 }
 
 resource "null_resource" "kubectl" {
-  count = "${var.init_cli ? 1 : 0 }"
+  count = var.init_cli ? 1 : 0
 
-  triggers {
-    cluster = "${google_container_cluster.cluster.id}"
+  triggers = {
+    cluster = google_container_cluster.cluster.id
   }
 
   # On creation, we want to setup the kubectl credentials. The easiest way
@@ -55,17 +55,17 @@ resource "null_resource" "kubectl" {
 }
 
 resource "null_resource" "helm" {
-  count = "${var.init_cli ? 1 : 0 }"
+  count = var.init_cli ? 1 : 0
   depends_on = ["null_resource.kubectl"]
 
-  triggers {
-    cluster = "${google_container_cluster.cluster.id}"
+  triggers = {
+    cluster = google_container_cluster.cluster.id
   }
 
   provisioner "local-exec" {
     command = <<EOF
 kubectl apply -f '${local.service_account_path}'
-helm init --service-account helm
+helm init --service-account helm --wait
 EOF
   }
 }

test/terraform/outputs.tf

@@ -1,7 +1,7 @@
 output "cluster_id" {
-  value = "${google_container_cluster.cluster.id}"
+  value = google_container_cluster.cluster.id
 }
 
 output "cluster_name" {
-  value = "${google_container_cluster.cluster.name}"
+  value = google_container_cluster.cluster.name
 }