From 09c33fa449512820bd267ec6b0fbe354003a0258 Mon Sep 17 00:00:00 2001
From: James Bardin <j.bardin@gmail.com>
Date: Wed, 9 Jun 2021 17:57:14 -0400
Subject: [PATCH] account for noop deposed instances in json plan

When rendering a json plan, we need to account for deposed instances
that have become a noop rather than a destroy.
---
 internal/command/jsonplan/values.go      |  7 +++-
 internal/command/jsonplan/values_test.go | 48 +++++++++++++++++++++++-
 2 files changed, 52 insertions(+), 3 deletions(-)

diff --git a/internal/command/jsonplan/values.go b/internal/command/jsonplan/values.go
index ac3abee5f..0e3c8ba45 100644
--- a/internal/command/jsonplan/values.go
+++ b/internal/command/jsonplan/values.go
@@ -11,6 +11,7 @@ import (
 	"github.com/hashicorp/terraform/internal/addrs"
 	"github.com/hashicorp/terraform/internal/configs/configschema"
 	"github.com/hashicorp/terraform/internal/plans"
+	"github.com/hashicorp/terraform/internal/states"
 	"github.com/hashicorp/terraform/internal/terraform"
 )
 
@@ -93,8 +94,10 @@ func marshalPlannedValues(changes *plans.Changes, schemas *terraform.Schemas) (m
 	seenModules := make(map[string]bool)
 
 	for _, resource := range changes.Resources {
-		// if the resource is being deleted, skip over it.
-		if resource.Action != plans.Delete {
+		// If the resource is being deleted, skip over it.
+		// Deposed instances are always conceptually a destroy, but if they
+		// were gone during refresh then the change becomes a noop.
+		if resource.Action != plans.Delete && resource.DeposedKey == states.NotDeposed {
 			containingModule := resource.Addr.Module.String()
 			moduleResourceMap[containingModule] = append(moduleResourceMap[containingModule], resource.Addr)
 
diff --git a/internal/command/jsonplan/values_test.go b/internal/command/jsonplan/values_test.go
index 55b01312e..fded98fcd 100644
--- a/internal/command/jsonplan/values_test.go
+++ b/internal/command/jsonplan/values_test.go
@@ -204,13 +204,26 @@ func TestMarshalPlanResources(t *testing.T) {
 			}},
 			Err: false,
 		},
-		"delete": {
+		"delete with null and nil": {
 			Action: plans.Delete,
 			Before: cty.NullVal(cty.EmptyObject),
 			After:  cty.NilVal,
 			Want:   nil,
 			Err:    false,
 		},
+		"delete": {
+			Action: plans.Delete,
+			Before: cty.ObjectVal(map[string]cty.Value{
+				"woozles": cty.StringVal("foo"),
+				"foozles": cty.StringVal("bar"),
+			}),
+			After: cty.NullVal(cty.Object(map[string]cty.Type{
+				"woozles": cty.String,
+				"foozles": cty.String,
+			})),
+			Want: nil,
+			Err:  false,
+		},
 		"update without unknowns": {
 			Action: plans.Update,
 			Before: cty.ObjectVal(map[string]cty.Value{
@@ -291,6 +304,39 @@ func TestMarshalPlanResources(t *testing.T) {
 	}
 }
 
+func TestMarshalPlanValuesNoopDeposed(t *testing.T) {
+	dynamicNull, err := plans.NewDynamicValue(cty.NullVal(cty.DynamicPseudoType), cty.DynamicPseudoType)
+	if err != nil {
+		t.Fatal(err)
+	}
+	testChange := &plans.Changes{
+		Resources: []*plans.ResourceInstanceChangeSrc{
+			{
+				Addr: addrs.Resource{
+					Mode: addrs.ManagedResourceMode,
+					Type: "test_thing",
+					Name: "example",
+				}.Instance(addrs.NoKey).Absolute(addrs.RootModuleInstance),
+				DeposedKey: "12345678",
+				ProviderAddr: addrs.AbsProviderConfig{
+					Provider: addrs.NewDefaultProvider("test"),
+					Module:   addrs.RootModule,
+				},
+				ChangeSrc: plans.ChangeSrc{
+					Action: plans.NoOp,
+					Before: dynamicNull,
+					After:  dynamicNull,
+				},
+			},
+		},
+	}
+
+	_, err = marshalPlannedValues(testChange, testSchemas())
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
 func testSchemas() *terraform.Schemas {
 	return &terraform.Schemas{
 		Providers: map[addrs.Provider]*terraform.ProviderSchema{