From 5bb81469895d669ddcb4b49e83809a980d57d6b1 Mon Sep 17 00:00:00 2001
From: Alexander Morozov <lk4d4@docker.com>
Date: Tue, 23 Dec 2014 11:13:45 -0800
Subject: [PATCH] Add Contains wrapper for Namespaces type

Signed-off-by: Alexander Morozov <lk4d4@docker.com>
---
 config.go      | 4 ++++
 config_test.go | 4 ++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/config.go b/config.go
index bf5236555..7f1bcc962 100644
--- a/config.go
+++ b/config.go
@@ -57,6 +57,10 @@ func (n Namespaces) index(t NamespaceType) int {
 	return -1
 }
 
+func (n Namespaces) Contains(t NamespaceType) bool {
+	return n.index(t) != -1
+}
+
 // Config defines configuration options for executing a process inside a contained environment.
 type Config struct {
 	// Mount specific options.
diff --git a/config_test.go b/config_test.go
index 63b8aa8ad..5c73f84af 100644
--- a/config_test.go
+++ b/config_test.go
@@ -64,12 +64,12 @@ func TestConfigJsonFormat(t *testing.T) {
 		t.Fail()
 	}
 
-	if container.Namespaces.index(NEWNET) == -1 {
+	if !container.Namespaces.Contains(NEWNET) {
 		t.Log("namespaces should contain NEWNET")
 		t.Fail()
 	}
 
-	if container.Namespaces.index(NEWUSER) != -1 {
+	if container.Namespaces.Contains(NEWUSER) {
 		t.Log("namespaces should not contain NEWUSER")
 		t.Fail()
 	}