fix missing PostDeployTasks for nested resources

src/Farmer/Builders/Builders.ResourceGroup.fs

@@ -86,11 +86,17 @@ type ResourceGroupConfig =
 
     interface IDeploymentSource with
         member this.Deployment=
+            let rec getPostDeployTasks (resources: IArmResource list) = [
+                    for resource in resources do
+                        match resource with
+                        | :? IPostDeploy as pd -> pd
+                        | :? ResourceGroupDeployment as rgp -> yield! getPostDeployTasks rgp.Resources 
+                        | _ -> ()
+                ]
+
             { Location=this.Location
               Template = this.Template
-              PostDeployTasks =
-                    this.Resources
-                    |> List.choose (function | :? IPostDeploy as pd -> Some pd |_ -> None)
+              PostDeployTasks = getPostDeployTasks this.Resources
               RequiredResourceGroups =
                     this.Resources
                     |> List.collect (function | :? ResourceGroupDeployment as rg -> rg.RequiredResourceGroups | _ -> [])

src/Tests/ResourceGroup.fs

@@ -35,4 +35,18 @@ let tests = testList "Resource Group" [
             |> List.map (fun x -> x.ResourceId.Name.Value)
         Expect.equal nestedResources ["stg1";"stg2";"stg3"] "all three storage accounts should be nested"
     }
+    test "zip_deploy should be performed when declared in a nested resource" {
+        let webApp = webApp {
+            name "webapp"
+            zip_deploy "deploy"
+        }
+
+        let oneNestedLevel = resourceGroup { add_resource webApp }
+        let twoNestedLevels = resourceGroup { add_resource oneNestedLevel }
+        let threeNestedLevels = arm { add_resource twoNestedLevels }
+
+        Expect.isNonEmpty
+            (threeNestedLevels :> IDeploymentSource).Deployment.PostDeployTasks
+            "The zip_deploy should create a post deployment task"
+    }
 ]