From e658f6597a29bce83f1d974a3800581d4ab49378 Mon Sep 17 00:00:00 2001
From: Jason Toffaletti <jtoffaletti@apple.com>
Date: Thu, 14 Sep 2017 20:44:42 -0700
Subject: [PATCH] add failing test for handling of nil interface with omitempty

---
 jsoniter_interface_test.go | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/jsoniter_interface_test.go b/jsoniter_interface_test.go
index 0e7ef88..1e1fb83 100644
--- a/jsoniter_interface_test.go
+++ b/jsoniter_interface_test.go
@@ -351,3 +351,22 @@ func Test_nil_out_null_interface(t *testing.T) {
 	should.Equal(nil, err)
 	should.Equal(nil, obj2.Field)
 }
+
+func Test_omitempty_nil_interface(t *testing.T) {
+	type TestData struct {
+		Field interface{} `json:"field,omitempty"`
+	}
+	should := require.New(t)
+
+	obj := TestData{
+		Field: nil,
+	}
+
+	js, err := json.Marshal(obj)
+	should.Equal(nil, err)
+	should.Equal("{}", string(js))
+
+	str, err := MarshalToString(obj)
+	should.Equal(nil, err)
+	should.Equal(string(js), str)
+}