failing tests with feature to implement

Author: lantoli

internal/convert/testdata/clu2adv/free_cluster.in.tf

@@ -17,6 +17,26 @@ resource "mongodbatlas_cluster" "count" {
   provider_instance_size_name = "M0"
 }
 
+
+resource "mongodbatlas_cluster" "upgrade_from_free_cluster" {
+  # upgraded free cluster to dedicated
+  project_id                  = var.project_id
+  name                        = var.cluster_name
+  provider_name               = "AWS" # changed from TENANT to AWS
+  provider_instance_size_name = "M10" # changed from M0 to M10
+  # removed backing_provider_name = AWS"
+  provider_region_name = var.region
+}
+
+resource "mongodbatlas_cluster" "upgrade_from_free_cluster_with_variables" {
+  # upgraded free cluster to dedicated, using variables in all attributes
+  project_id                  = var.project_id
+  name                        = var.cluster_name
+  provider_name               = var.provider_name
+  provider_instance_size_name = var.instance_size
+  provider_region_name        = var.region
+}
+
 resource "another_resource" "res1" {
   name = "name1"
 }

internal/convert/testdata/clu2adv/free_cluster.out.tf

@@ -47,6 +47,52 @@ resource "mongodbatlas_advanced_cluster" "count" {
   # Please review the changes and confirm that references to this resource are updated.
 }
 
+resource "mongodbatlas_advanced_cluster" "upgrade_from_free_cluster" {
+  project_id   = var.project_id
+  name         = var.cluster_name
+  cluster_type = "REPLICASET"
+  replication_specs = [
+    {
+      region_configs = [
+        {
+          priority      = 7
+          region_name   = var.region
+          provider_name = "AWS"
+          electable_specs = {
+            instance_size = "M10"
+          }
+        }
+      ]
+    }
+  ]
+
+  # Generated by atlas-cli-plugin-terraform.
+  # Please review the changes and confirm that references to this resource are updated.
+}
+
+resource "mongodbatlas_advanced_cluster" "upgrade_from_free_cluster_with_variables" {
+  project_id   = var.project_id
+  name         = var.cluster_name
+  cluster_type = "REPLICASET"
+  replication_specs = [
+    {
+      region_configs = [
+        {
+          priority      = 7
+          region_name   = var.region
+          provider_name = var.provider_name
+          electable_specs = {
+            instance_size = var.instance_size
+          }
+        }
+      ]
+    }
+  ]
+
+  # Generated by atlas-cli-plugin-terraform.
+  # Please review the changes and confirm that references to this resource are updated.
+}
+
 resource "another_resource" "res1" {
   name = "name1"
 }