From 9a857ecbadc21e4b67bbaf3ad163ba191e640c82 Mon Sep 17 00:00:00 2001
From: Dmitriy Kalinin <cppforlife@gmail.com>
Date: Wed, 18 Mar 2020 11:50:16 -0400
Subject: [PATCH] pull out ExitStatus interface

---
 cmd/kapp/kapp.go                            | 2 +-
 pkg/kapp/cmd/app/deploy_diff_exit_status.go | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/cmd/kapp/kapp.go b/cmd/kapp/kapp.go
index 0efa4b341..214cbc94a 100644
--- a/cmd/kapp/kapp.go
+++ b/cmd/kapp/kapp.go
@@ -27,7 +27,7 @@ func main() {
 	err := command.Execute()
 	if err != nil {
 		confUI.ErrorLinef("kapp: Error: %v", err)
-		if typedErr, ok := err.(cmdapp.DeployDiffExitStatus); ok {
+		if typedErr, ok := err.(cmdapp.ExitStatus); ok {
 			os.Exit(typedErr.ExitStatus())
 		}
 		os.Exit(1)
diff --git a/pkg/kapp/cmd/app/deploy_diff_exit_status.go b/pkg/kapp/cmd/app/deploy_diff_exit_status.go
index fa89c47a6..652471b4a 100644
--- a/pkg/kapp/cmd/app/deploy_diff_exit_status.go
+++ b/pkg/kapp/cmd/app/deploy_diff_exit_status.go
@@ -4,10 +4,16 @@ import (
 	"fmt"
 )
 
+type ExitStatus interface {
+	ExitStatus() int
+}
+
 type DeployDiffExitStatus struct {
 	hasNoChanges bool
 }
 
+var _ ExitStatus = DeployDiffExitStatus{}
+
 func (d DeployDiffExitStatus) Error() string {
 	numStr := "pending changes"
 	if d.hasNoChanges {