Properly output descriptors of chained modules (cloudposse#133)

Author: Nuru

descriptors.tf

@@ -18,10 +18,10 @@
 # with only 2 use cases, we are going to keep it simple for now.
 
 locals {
-  descriptor_labels = { for k, v in var.descriptor_formats : k => [
+  descriptor_labels = { for k, v in local.descriptor_formats : k => [
     for label in v.labels : local.id_context[label]
   ] }
-  descriptors = { for k, v in var.descriptor_formats : k => (
+  descriptors = { for k, v in local.descriptor_formats : k => (
     format(v.format, local.descriptor_labels[k]...)
     )
   }

examples/complete/descriptors.tf

@@ -40,3 +40,17 @@ output "descriptor_stack" {
 output "descriptor_account_name" {
   value = module.descriptors.descriptors["account_name"]
 }
+
+module "chained_descriptors" {
+  source = "../.."
+
+  context = module.descriptors.context
+}
+
+output "chained_descriptor_stack" {
+  value = module.chained_descriptors.descriptors["stack"]
+}
+
+output "chained_descriptor_account_name" {
+  value = module.chained_descriptors.descriptors["account_name"]
+}

test/src/examples_complete_test.go

@@ -43,10 +43,17 @@ func TestExamplesComplete(t *testing.T) {
 	compatible := terraform.Output(t, terraformOptions, "compatible")
 	assert.Equal(t, "true", compatible)
 
+	expectedDescriptorAccountName := "bild-hrh"
+	expectedDescriptorStack := "hrh-uat-bild"
 	descriptorAccountName := terraform.Output(t, terraformOptions, "descriptor_account_name")
 	descriptorStack := terraform.Output(t, terraformOptions, "descriptor_stack")
-	assert.Equal(t, "bild-hrh", descriptorAccountName)
-	assert.Equal(t, "hrh-uat-bild", descriptorStack)
+	assert.Equal(t, expectedDescriptorAccountName, descriptorAccountName)
+	assert.Equal(t, expectedDescriptorStack, descriptorStack)
+
+	chainedDescriptorAccountName := terraform.Output(t, terraformOptions, "chained_descriptor_account_name")
+	chainedDescriptorStack := terraform.Output(t, terraformOptions, "chained_descriptor_stack")
+	assert.Equal(t, descriptorAccountName, chainedDescriptorAccountName, "Chained module should output same descriptors")
+	assert.Equal(t, descriptorStack, chainedDescriptorStack, "Chained module should output same descriptors")
 
 	expectedLabel1Context := NLContext{
 		Enabled:     true,