README.md, src/main.sh, test/local-test.sh: Support for 'run-all' options

1. test/local-test.sh: Added script to run local testing
2. README.md: Updated about local testing

Author: maniankara

README.md

@@ -126,4 +126,17 @@ The usual [Terraform environment variables](https://www.terraform.io/docs/comman
 
 Other environment variables may be configured to pass data into Terraform. If the data is sensitive, consider using [secrets](#secrets) instead.
 
+
+## Testing
+
+If you want to test these scripts locally, its possible after installing docker in your test environment
+
+1. Open `test/local-test.sh` and modify the GLOBAL variables (in caps) according to your needs
+2. Run it with: `test/local-test.sh` or `test/local-test.sh run-all plan`
+3. The above command:
+ - Builds a docker container with image tag `tg`
+ - Starts that container with those global variables
+
+
+
 **This is a fork of [Terraform Github Actions](https://github.com/hashicorp/terraform-github-actions).**

src/main.sh

@@ -32,7 +32,11 @@ function parseInputs {
   fi
 
   if [ "${INPUT_TF_ACTIONS_SUBCOMMAND}" != "" ]; then
-    tfSubcommand=${INPUT_TF_ACTIONS_SUBCOMMAND}
+    if [[ "${INPUT_TF_ACTIONS_SUBCOMMAND}" = run-all* ]]; then
+      tfSubcommand=$(echo $INPUT_TF_ACTIONS_SUBCOMMAND|cut -d ' ' -f 2 )
+    else
+      tfSubcommand=${INPUT_TF_ACTIONS_SUBCOMMAND}
+    fi
   else
     echo "Input terraform_subcommand cannot be empty"
     exit 1

test/local-test.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# This is a script for easily running the local testing
+# Comes very handy in local development
+
+TF_VERSION='0.14.6'
+TG_VERSION='v0.28.4'
+TF_WORKING_DIR='/var/opt'
+TF_SUBCOMMAND='run-all init'
+TG_LOCAL_WORK_DIR="$(pwd)"  # TODO, provide some path which has the terragrunt code
+
+function build_docker {
+    echo "INFO: Building docker image"
+    docker build -t tg .
+}
+
+function run_docker {
+    echo "INFO: Test running docker"
+    docker run -it \
+        -e INPUT_TF_ACTIONS_VERSION=$TF_VERSION \
+        -e INPUT_TG_ACTIONS_VERSION=$TG_VERSION \
+        -e INPUT_TF_ACTIONS_SUBCOMMAND="$TF_SUBCOMMAND" \
+        -e INPUT_TF_ACTIONS_WORKING_DIR="$TF_WORKING_DIR" \
+        -v $TG_LOCAL_WORK_DIR:$TF_WORKING_DIR \
+        tg
+}
+
+function main {
+
+    # validate cli
+    if [ "$1" != "" ];then
+        TF_SUBCOMMAND=$*
+    fi
+
+    # Build the image
+    build_docker
+
+    # test run it
+    run_docker
+}
+
+main $*