Add tests (#41)

* Update README

* Add `codefresh.yml`

* Update README

* Test README

README.md

@@ -3,7 +3,7 @@
 
 [![Cloud Posse][logo]](https://cpco.io/homepage)
 
-# terraform-null-label [![Build Status](https://travis-ci.org/cloudposse/terraform-null-label.svg?branch=master)](https://travis-ci.org/cloudposse/terraform-null-label) [![Latest Release](https://img.shields.io/github/release/cloudposse/terraform-null-label.svg)](https://github.com/cloudposse/terraform-null-label/releases/latest) [![Slack Community](https://slack.cloudposse.com/badge.svg)](https://slack.cloudposse.com)
+# terraform-null-label [![Codefresh Build Status](https://g.codefresh.io/api/badges/pipeline/cloudposse/cloudposse%2Fterraform-null-label%2Ftest?type=cf-1)](https://g.codefresh.io/public/accounts/cloudposse/pipelines/cloudposse/terraform-null-label/test) [![Latest Release](https://img.shields.io/github/release/cloudposse/terraform-null-label.svg)](https://github.com/cloudposse/terraform-null-label/releases/latest) [![Slack Community](https://slack.cloudposse.com/badge.svg)](https://slack.cloudposse.com)
 
 
 Terraform module designed to generate consistent label names and tags for resources. Use `terraform-null-label` to implement a strict naming convention.
@@ -54,6 +54,11 @@ We literally have [*hundreds of terraform modules*][terraform_modules] that are
 
 ## Usage
 
+
+**IMPORTANT:** The `master` branch is used in `source` just as an example. In your code, do not pin to `master` because there may be breaking changes between releases.
+Instead pin to the release tag (e.g. `?ref=tags/x.y.z`) of one of our [latest releases](https://github.com/cloudposse/terraform-null-label/releases).
+
+
 ### Simple Example
 
 ```hcl
@@ -64,7 +69,11 @@ module "eg_prod_bastion_label" {
   name       = "bastion"
   attributes = ["public"]
   delimiter  = "-"
-  tags       = "${map("BusinessUnit", "XYZ", "Snapshot", "true")}"
+
+  tags = {
+    "BusinessUnit" = "XYZ",
+    "Snapshot"     = "true"
+  }
 }
 ```
 
@@ -109,7 +118,11 @@ module "eg_prod_bastion_abc_label" {
   name       = "bastion"
   attributes = ["abc"]
   delimiter  = "-"
-  tags       = "${map("BusinessUnit", "ABC")}"
+
+  tags = {
+    "BusinessUnit" = "XYZ",
+    "Snapshot"     = "true"
+  }
 }
 
 resource "aws_security_group" "eg_prod_bastion_abc" {
@@ -136,7 +149,11 @@ module "eg_prod_bastion_xyz_label" {
   name       = "bastion"
   attributes = ["xyz"]
   delimiter  = "-"
-  tags       = "${map("BusinessUnit", "XYZ")}"
+
+  tags = {
+    "BusinessUnit" = "XYZ",
+    "Snapshot"     = "true"
+  }
 }
 
 resource "aws_security_group" "eg_prod_bastion_xyz" {

README.yaml

@@ -32,9 +32,9 @@ github_repo: cloudposse/terraform-null-label
 
 # Badges to display
 badges:
-  - name: "Build Status"
-    image: "https://travis-ci.org/cloudposse/terraform-null-label.svg?branch=master"
-    url: "https://travis-ci.org/cloudposse/terraform-null-label"
+  - name: "Codefresh Build Status"
+    image: "https://g.codefresh.io/api/badges/pipeline/cloudposse/cloudposse%2Fterraform-null-label%2Ftest?type=cf-1"
+    url: "https://g.codefresh.io/public/accounts/cloudposse/pipelines/cloudposse/terraform-null-label/test"
   - name: "Latest Release"
     image: "https://img.shields.io/github/release/cloudposse/terraform-null-label.svg"
     url: "https://github.com/cloudposse/terraform-null-label/releases/latest"
@@ -75,7 +75,11 @@ usage: |-
     name       = "bastion"
     attributes = ["public"]
     delimiter  = "-"
-    tags       = "${map("BusinessUnit", "XYZ", "Snapshot", "true")}"
+
+    tags = {
+      "BusinessUnit" = "XYZ",
+      "Snapshot"     = "true"
+    }
   }
   ```
 
@@ -120,7 +124,11 @@ usage: |-
     name       = "bastion"
     attributes = ["abc"]
     delimiter  = "-"
-    tags       = "${map("BusinessUnit", "ABC")}"
+
+    tags = {
+      "BusinessUnit" = "XYZ",
+      "Snapshot"     = "true"
+    }
   }
 
   resource "aws_security_group" "eg_prod_bastion_abc" {
@@ -147,7 +155,11 @@ usage: |-
     name       = "bastion"
     attributes = ["xyz"]
     delimiter  = "-"
-    tags       = "${map("BusinessUnit", "XYZ")}"
+
+    tags = {
+      "BusinessUnit" = "XYZ",
+      "Snapshot"     = "true"
+    }
   }
 
   resource "aws_security_group" "eg_prod_bastion_xyz" {

codefresh/test.yml

@@ -0,0 +1,51 @@
+version: '1.0'
+
+stages:
+- Prepare
+- Test
+
+steps:
+  main_clone:
+    title: "Clone repository"
+    type: git-clone
+    stage: Prepare
+    description: "Initialize"
+    repo: ${{CF_REPO_OWNER}}/${{CF_REPO_NAME}}
+    git: CF-default
+    revision: ${{CF_REVISION}}
+
+  clean_init:
+    title: Prepare build-harness and test-harness
+    image: ${{TEST_IMAGE}}
+    stage: Prepare
+    commands:
+    - make init
+    - make -C test/ clean init
+
+  test:
+    type: "parallel"
+    title: "Run tests"
+    description: "Run all tests in parallel"
+    stage: Test
+    steps:
+      test_readme_lint:
+        title: "Test README.md updated"
+        stage: "Test"
+        image: ${{TEST_IMAGE}}
+        description: Test "readme/lint"
+        commands:
+        - make readme/lint
+
+      test_module:
+        title: Test module
+        image: ${{TEST_IMAGE}}
+        stage: Test
+        commands:
+        - make -C test/ module
+
+      test_examples_complete:
+        title: Test "examples/complete"
+        image: ${{TEST_IMAGE}}
+        stage: Test
+        commands:
+        - make -C test/ examples/complete

test/.gitignore

@@ -0,0 +1 @@
+.test-harness

test/Makefile

@@ -0,0 +1,41 @@
+TEST_HARNESS ?= https://github.com/cloudposse/test-harness.git
+TEST_HARNESS_BRANCH ?= master
+TEST_HARNESS_PATH = $(realpath .test-harness)
+BATS_ARGS ?= --tap
+BATS_LOG ?= test.log
+
+# Define a macro to run the tests
+define RUN_TESTS 
+@echo "Running tests in $(1)"
+@cd $(1) && bats $(BATS_ARGS) $(addsuffix .bats,$(addprefix $(TEST_HARNESS_PATH)/test/terraform/,$(TESTS)))
+endef
+
+default: all
+
+# Provision the test-harnesss
+.test-harness:
+	[ -d $@ ] || git clone --depth=1 -b $(TEST_HARNESS_BRANCH) $(TEST_HARNESS) $@
+
+# Initialize the tests
+init: .test-harness
+
+# Clean up the test harness
+clean:
+	[ "$(TEST_HARNESS_PATH)" == "/" ] || rm -rf $(TEST_HARNESS_PATH)
+
+# Run all tests
+all: module examples/complete
+
+# Install all dependencies (OS specific)
+deps: init
+	@[ ! -x /sbin/apk ] || apk add --update terraform-docs@cloudposse
+
+# Run basic sanity checks against the module itself
+module: export TESTS ?= installed lint get-modules validate terraform-docs input-descriptions output-descriptions
+module: deps
+	$(call RUN_TESTS, ../)
+
+# Run tests against example
+examples/complete: export TESTS ?= init plan apply
+examples/complete: deps
+	$(call RUN_TESTS, ../$@)