From acf20a12cb88d2f93396c307323c54dfef38f480 Mon Sep 17 00:00:00 2001
From: Aaron Jacobs <jacobsa@google.com>
Date: Wed, 24 May 2017 16:00:30 -0400
Subject: [PATCH] bucket.go: check the bucket works before returning it.

Fixes #228.
---
 bucket.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/bucket.go b/bucket.go
index 4c5ee1ddbd..613cfd2ba5 100644
--- a/bucket.go
+++ b/bucket.go
@@ -133,5 +133,12 @@ func setUpBucket(
 			b)
 	}
 
+	// Ensure the bucket works, catching problems early.
+	_, err = b.ListObjects(ctx, &gcs.ListObjectsRequest{MaxResults: 1})
+	if err != nil {
+		err = fmt.Errorf("checking bucket works: %v", err)
+		return
+	}
+
 	return
 }