feature: variabilize replicas number for deployment

input.tf

@@ -53,3 +53,9 @@ variable "volumes" {
   )
   default = {}
 }
+
+variable "replicas" {
+  type = number
+  default = 1
+  description = "number of replicas for the application's pod"
+}

main.tf

@@ -43,7 +43,7 @@ resource "kubernetes_deployment_v1" "deployment" {
     }
   }
   spec {
-    replicas = "1"
+    replicas = var.replicas
     selector {
       match_labels = {
         "app.kubernetes.io/name" = local.label_name

tests/main.tftest.hcl

@@ -7,6 +7,7 @@ run "terraform-plan" {
     image = {
       name = "container.localdomain/test-image"
     }
+    replicas = 2
   }
 
   assert {
@@ -15,7 +16,7 @@ run "terraform-plan" {
   }
 
   assert {
-    condition = kubernetes_deployment_v1.deployment.spec[0].replicas == "1"
+    condition = kubernetes_deployment_v1.deployment.spec[0].replicas == "2"
     error_message = "invalid number of replicas"
   }
 }