From ee7b3e0353166ab1f3a605294ac8cd2b77953778 Mon Sep 17 00:00:00 2001
From: Cyrill Schumacher <cyrill@schumacher.fm>
Date: Thu, 26 Nov 2015 07:42:19 +0100
Subject: [PATCH] Add bool case to ToStringE

---
 cast_test.go | 2 ++
 caste.go     | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/cast_test.go b/cast_test.go
index 2c4e421..e08887b 100644
--- a/cast_test.go
+++ b/cast_test.go
@@ -40,6 +40,8 @@ func TestToString(t *testing.T) {
 	assert.Equal(t, ToString(template.URL("http://somehost.foo")), "http://somehost.foo")
 	assert.Equal(t, ToString(foo), "one more time")
 	assert.Equal(t, ToString(nil), "")
+	assert.Equal(t, ToString(true), "true")
+	assert.Equal(t, ToString(false), "false")
 }
 
 type foo struct {
diff --git a/caste.go b/caste.go
index 5401c0b..3ac4cb7 100644
--- a/caste.go
+++ b/caste.go
@@ -194,6 +194,8 @@ func ToStringE(i interface{}) (string, error) {
 	switch s := i.(type) {
 	case string:
 		return s, nil
+	case bool:
+		return strconv.FormatBool(s), nil
 	case float64:
 		return strconv.FormatFloat(i.(float64), 'f', -1, 64), nil
 	case int: