From b7413d31388aba35bfdc98396fe828cd8793cdf4 Mon Sep 17 00:00:00 2001
From: Andrea Luzzardi <aluzzardi@gmail.com>
Date: Mon, 4 May 2015 23:52:34 -0700
Subject: [PATCH] integration helpers: fix the wait for docker join

It used to output `[: -eq: unary operator expected` since the grep
command didn't give any output, therefore generating a syntax error.

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>
---
 test/integration/helpers.bash | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/integration/helpers.bash b/test/integration/helpers.bash
index 95648a1342..59fe6fd69d 100644
--- a/test/integration/helpers.bash
+++ b/test/integration/helpers.bash
@@ -100,7 +100,7 @@ function swarm_join() {
 		SWARM_JOIN_PID[$i]=$!
 		((++i))
 	done
-	retry 30 1 [ `docker_swarm info | grep -q "Nodes: $i"` -eq 0 ]
+	retry 30 1 [ -n $(docker_swarm info | grep -q "Nodes: $i") ]
 }
 
 # Stops the manager.