Run validation with multiple Terraform versions

.github/workflows/validate.yml

@@ -2,16 +2,35 @@ name: Validate
 
 on: push
 
-env:
-  AWS_REGION: local
-
 jobs:
-  validate:
+  validate_terraform_versions:
     runs-on: ubuntu-20.04
+
+    strategy:
+      matrix:
+        terraform_version:
+          - "0.15.5"
+          - "1.0.11"
+          - "1.1.9"
+          - "1.2.2"
+
+    defaults:
+      run:
+        working-directory: _test
+
     steps:
       - uses: actions/checkout@v3
-      - uses: hashicorp/setup-terraform@v2.0.0
+      - uses: hashicorp/setup-terraform@v2
         with:
-          terraform_version: 0.15.5
+          terraform_version: ${{ matrix.terraform_version }}
       - run: terraform init
       - run: terraform validate
+
+  validate: # this is a workaround, see https://github.community/t/status-check-for-a-matrix-jobs/127354/6
+    if: ${{ always() }}
+    needs: [validate_terraform_versions]
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check build status of all needed jobs
+        if: ${{ needs.validate_terraform_versions.result != 'success' }}
+        run: exit 1

.gitignore

@@ -1,2 +1,2 @@
-/.terraform
-/.terraform.lock.hcl
+/_test/.terraform
+/_test/.terraform.lock.hcl

_test/main.tf

@@ -0,0 +1,27 @@
+provider "aws" {
+  region = "local"
+}
+
+module "lambda" {
+  source  = "./.."
+
+  function_name = "example"
+  description   = "This is an example"
+
+  runtime                        = "nodejs12.x"
+  handler                        = "index.handler"
+  memory_size                    = 128
+  timeout                        = 3
+  reserved_concurrent_executions = 1
+
+  environment_variables = {
+    NODE_ENV = "production"
+  }
+
+  source_dir = "lambda/src"
+
+  tags = {
+    app = "example"
+    env = "production"
+  }
+}