From f5701d0e441ca957867ee5e1fee9cf8682127f4d Mon Sep 17 00:00:00 2001
From: carlory <baofa.fan@daocloud.io>
Date: Mon, 18 Sep 2017 19:15:34 +0800
Subject: [PATCH] add test code for UnmarshalChartfile

---
 pkg/chartutil/chartfile.go      |  3 +++
 pkg/chartutil/chartfile_test.go | 10 ++++++++++
 2 files changed, 13 insertions(+)

diff --git a/pkg/chartutil/chartfile.go b/pkg/chartutil/chartfile.go
index 9897d66ff..55847819a 100644
--- a/pkg/chartutil/chartfile.go
+++ b/pkg/chartutil/chartfile.go
@@ -35,6 +35,9 @@ const ApiVersionV1 = "v1"
 
 // UnmarshalChartfile takes raw Chart.yaml data and unmarshals it.
 func UnmarshalChartfile(data []byte) (*chart.Metadata, error) {
+	if len(data) == 0 {
+		return nil, nil
+	}
 	y := &chart.Metadata{}
 	err := yaml.Unmarshal(data, y)
 	if err != nil {
diff --git a/pkg/chartutil/chartfile_test.go b/pkg/chartutil/chartfile_test.go
index 5b36dc955..edbbc9ea3 100755
--- a/pkg/chartutil/chartfile_test.go
+++ b/pkg/chartutil/chartfile_test.go
@@ -24,6 +24,16 @@ import (
 
 const testfile = "testdata/chartfiletest.yaml"
 
+func TestUnmarshalChartfile(t *testing.T) {
+	metadata, err := UnmarshalChartfile([]byte{})
+	if err != nil {
+		t.Error(err)
+	}
+	if err == nil && metadata != nil {
+		t.Errorf("Want nil, but got %t", metadata)
+	}
+}
+
 func TestLoadChartfile(t *testing.T) {
 	f, err := LoadChartfile(testfile)
 	if err != nil {