Persist sequence-only changes.

This commit fixes a bug where only calling NextSequence() on a Bucket does not cause the Bucket to be
peristed. The simple fix is to simply materialize the root node so that the bucket is flushed out
during commit.

Thanks to Matthew Dawson (@MJDSys) for reporting.

https://github.com/boltdb/bolt/issues/296

1 files changed, 3 insertions, 0 deletions

diff --git a/db_test.go b/db_test.go
index 7ba5ce8..4f05ad9 100644
--- a/db_test.go
+++ b/db_test.go
@@ -696,3 +696,6 @@ func fileSize(path string) int64 {
 	}
 	return fi.Size()
 }
+
+func warn(v ...interface{})              { fmt.Fprintln(os.Stderr, v...) }
+func warnf(msg string, v ...interface{}) { fmt.Fprintf(os.Stderr, msg+"\n", v...) }