From d1141c0e0952131e1f5ee0037f79e14d701d4da9 Mon Sep 17 00:00:00 2001
From: Xavier Lucas <xavier.lucas@datadoghq.com>
Date: Fri, 22 Feb 2019 17:14:08 +0100
Subject: [PATCH] Add support for JSON arrays

---
 cast_test.go | 2 ++
 caste.go     | 3 +++
 2 files changed, 5 insertions(+)

diff --git a/cast_test.go b/cast_test.go
index d9a1479..7f08eb1 100644
--- a/cast_test.go
+++ b/cast_test.go
@@ -1048,6 +1048,8 @@ func TestToStringSliceE(t *testing.T) {
 		expect []string
 		iserr  bool
 	}{
+		{`["a", "b"]`, []string{"a", "b"}, false},
+		{"a b", []string{"a", "b"}, false},
 		{[]string{"a", "b"}, []string{"a", "b"}, false},
 		{[]interface{}{1, 3}, []string{"1", "3"}, false},
 		{interface{}(1), []string{"1"}, false},
diff --git a/caste.go b/caste.go
index a4859fb..64a7466 100644
--- a/caste.go
+++ b/caste.go
@@ -1130,6 +1130,9 @@ func ToStringSliceE(i interface{}) ([]string, error) {
 	case []string:
 		return v, nil
 	case string:
+		if err := json.Unmarshal([]byte(v), &a); err == nil {
+			return a, nil
+		}
 		return strings.Fields(v), nil
 	case interface{}:
 		str, err := ToStringE(v)