add terraform test

.github/workflows/test.yaml

@@ -0,0 +1,57 @@
+---
+###############
+## Run tests ##
+###############
+
+#
+# Documentation:
+# https://help.github.com/en/articles/workflow-syntax-for-github-actions
+#
+
+name: Test
+on:
+  pull_request:
+  push:
+    branches: [ main ]
+
+##########################
+# Prevent duplicate jobs #
+##########################
+concurrency:
+  group: ${{ github.repository }}
+  cancel-in-progress: false
+
+permissions:
+  id-token: write
+  contents: read
+
+###############
+# Run the job #
+###############
+jobs:
+  terraform-test:
+    name: Terraform Test
+    runs-on: ubuntu-latest
+    steps:
+      ############################
+      # Checkout the source code #
+      ############################
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      #############################
+      # Configure AWS credentials #
+      #############################
+      - name: Configure AWS credentials
+        uses: aws-actions/configure-aws-credentials@v2
+        with:
+          role-to-assume: arn:aws:iam::${{ vars.AWS_TESTING_ACCOUNT_ID }}:role/${{ vars.AWS_TESTING_ROLE }}
+          aws-region: ${{ vars.AWS_TESTING_REGION }}
+          mask-aws-account-id: false
+
+      #############
+      # Run tests #
+      #############
+      - name: Run Tests
+        timeout-minutes: 30
+        run: terraform init && terraform test

tests/basic.tftest.hcl

@@ -0,0 +1,68 @@
+variables {
+  name       = "test-budget"
+  recipients = ["tommy.tester@test.com"]
+
+  budgets = [{
+    name = "test-budget-1",
+
+    budget_type  = "COST"
+    limit_amount = 50
+    limit_unit   = "EUR"
+
+    time_period_start = "2023-01-01_00:00"
+    time_period_end   = "2087-06-15_00:00"
+    time_unit         = "MONTHLY"
+
+    notification = {
+      comparison_operator = "GREATER_THAN"
+      threshold           = "69"
+      threshold_type      = "PERCENTAGE"
+      notification_type   = "FORECASTED"
+    }
+  }]
+}
+
+run "basic_budget" {
+  command = plan
+
+  assert {
+    condition     = length(aws_budgets_budget.main) == 1
+    error_message = "Expected one budget to be created."
+  }
+
+  assert {
+    condition     = contains(keys(aws_budgets_budget.main), "test-budget-1")
+    error_message = "Expected test-budget-1 to exist."
+  }
+
+  assert {
+    condition     = length(aws_budgets_budget.main["test-budget-1"].notification) == 1
+    error_message = "Expected test-budget-1 to have one notification."
+  }
+
+  assert {
+    condition = alltrue([
+      for n in aws_budgets_budget.main["test-budget-1"].notification : can(length(n.subscriber_email_addresses) == 1)
+    ])
+
+    error_message = "Expected test-budget-1 notification to have one recipient."
+  }
+
+  assert {
+    condition     =  aws_budgets_budget.main["test-budget-1"].limit_amount == "50"
+    error_message = "Expected test-budget-1 limit amount to be 50."
+  }
+
+  assert {
+    condition     =  aws_budgets_budget.main["test-budget-1"].limit_unit == "EUR"
+    error_message = "Expected test-budget-1 limit unit to be EUR."
+  }
+
+  assert {
+    condition = alltrue([
+      for n in aws_budgets_budget.main["test-budget-1"].notification : can(n.threshold == 69)
+    ])
+
+    error_message = "Expected test-budget-1 threshold to be 69%."
+  }
+}

versions.tf

@@ -1,5 +1,5 @@
 terraform {
-  required_version = ">= 1.3"
+  required_version = ">= 1.6"
 
   required_providers {
     aws = {