Add Sample: Integration Testing (#43)

add samples for integration testing

samples/integration-testing/src/azure-pipeline.yaml

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+# Azure Pipeline that run basic continuous integration on a Terraform project
+
+# This makes sure the pipeline is triggered every time code is pushed in the validation-testing example source, on all branches.
+trigger:
+  branches:
+    include:
+    - '*'
+  paths:
+    include:
+    - 'examples/validation-testing/src/*'
+
+variables:
+  # There must be an Azure Service Connection with that name defined in your Azure DevOps settings. See https://docs.microsoft.com/en-us/azure/devops/pipelines/library/connect-to-azure?view=azure-devops
+  serviceConnection: 'terraform-basic-testing-azure-connection'
+  azureLocation: 'westeurope'
+  # Terraform settings
+  terraformWorkingDirectory: '$(System.DefaultWorkingDirectory)/examples/basic-testing/src'
+  terraformVersion: '0.12.25'
+
+stages:
+  - stage: TerraformContinuousIntegration
+    displayName: Terraform Module - CI
+    jobs:
+    - job: TerraformContinuousIntegrationJob
+      displayName: TerraformContinuousIntegration - CI Job
+      pool:
+        vmImage: ubuntu-20.04
+      steps:
+      # Step 1: run the Checkov Static Code Analysis
+      - bash: $(terraformWorkingDirectory)/checkov.sh $(terraformWorkingDirectory)
+        displayName: Checkov Static Code Analysis
+      # Step 2: install Terraform on the Azure Pipelines agent
+      - task: charleszipp.azure-pipelines-tasks-terraform.azure-pipelines-tasks-terraform-installer.TerraformInstaller@0
+        displayName: 'Install Terraform'
+        inputs:
+          terraformVersion: $(terraformVersion)
+      # Step 3: run Terraform init to initialize the workspace
+      - task: charleszipp.azure-pipelines-tasks-terraform.azure-pipelines-tasks-terraform-cli.TerraformCLI@0
+        displayName: 'Run terraform init'
+        inputs:
+          command: init
+          workingDirectory: $(terraformWorkingDirectory)
+      # Step 4: run Terraform validate to validate HCL syntax
+      - task: charleszipp.azure-pipelines-tasks-terraform.azure-pipelines-tasks-terraform-cli.TerraformCLI@0
+        displayName: 'Run terraform validate'
+        inputs:
+          command: validate
+          workingDirectory: $(terraformWorkingDirectory)
+      # Step 5: run Terraform plan to validate HCL syntax
+      - task: charleszipp.azure-pipelines-tasks-terraform.azure-pipelines-tasks-terraform-cli.TerraformCLI@0
+        displayName: 'Run terraform plan'
+        inputs:
+          command: plan
+          workingDirectory: $(terraformWorkingDirectory)
+          environmentServiceName: $(serviceConnection)
+          commandOptions: -var location=$(azureLocation)

samples/integration-testing/src/checkov.sh

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+#!/bin/bash      
+#title           :run_checkov.sh
+#description     :Runs the Checkov static analysis tool on all subdirectories of the target.
+#author		       :andreas.heuamier@microsoft.com
+#date            :20200510
+#version         :0.1    
+#usage		       :./checkov.sh {WORKk_DIR}
+#bash_version    :5.0.16(1)-release 
+# 
+set -eo pipefail
+
+# The target directory for scanning.
+WORK_DIR=${1-$(pwd)}
+
+#######################################
+# run_checkov() docker command
+# Arguments:
+#   test_dir folder
+# Outputs:
+#   Writes test command outputs to stdout
+#   Exits on $? != 0
+#######################################
+run_checkov() {
+  local test_dir=$1
+  docker run -t -v "${test_dir}":/tf bridgecrew/checkov:release-1.0.235 -d /tf
+}
+
+#######################################
+# find_folders_by() file pattern
+# Globals:
+#   WORK_DIR -path
+# Arguments:
+#   pattern - regex
+# Outputs:
+#   Writes folders list to stdout
+#######################################
+find_folders_by() {
+  local pattern=${1:-"main.tf"}
+  find "${WORK_DIR}" -type f -name "${pattern}" -printf '%h\n' | sort -u
+}
+
+#######################################
+# Runs the Checkov static analysis tool on all subdirectories
+#######################################
+run_main() {
+  for folder in $(find_folders_by "main.tf"); do
+    run_checkov "${folder}" &
+  done
+  wait
+}
+
+#######################################
+#  Be able to run this one either as standalone or import as lib
+#######################################
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+  run_main
+fi

samples/integration-testing/src/main.tf

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+resource "random_uuid" "uuid" {}
+
+resource "azurerm_resource_group" "rg" {
+  name     = "rg-hello-tf-${random_uuid.uuid.result}"
+  location = var.location
+}

samples/integration-testing/src/output.tf

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+output "resource_group_name" {
+    value = azurerm_resource_group.rg.name
+}

samples/integration-testing/src/provider.tf

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+provider "azurerm" {
+  features {}
+}

samples/integration-testing/src/variables.tf

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+variable location {
+  type        = string
+  description = "The Azure location where the resources will be created"
+  default     = "westeurope"
+}