Add some helpful tests scripts for backup and make bmgr restore wait until the backup is done.
diff --git a/tests/backup/test_backup.sh b/tests/backup/test_backup.sh
new file mode 100755
index 0000000..f6c73d8
--- /dev/null
+++ b/tests/backup/test_backup.sh
@@ -0,0 +1,21 @@
+#!/bin/bash
+
+#adb kill-server
+
+# set the transport
+adb shell bmgr transport 1
+
+# load up the three files
+adb shell "rm /data/data/com.android.backuptest/files/* ; \
+ mkdir /data/data/com.android.backuptest ; \
+ mkdir /data/data/com.android.backuptest/files ; \
+ echo -n first file > /data/data/com.android.backuptest/files/file.txt ; \
+ echo -n asdf > /data/data/com.android.backuptest/files/another_file.txt ; \
+ echo -n 3 > /data/data/com.android.backuptest/files/3.txt ; \
+"
+
+# say that the data has changed
+adb shell bmgr backup com.android.backuptest
+
+# run the backup
+adb shell bmgr run