[RFC PATCH v2 7/8] btrfs-progs: test: Add helper function to check if test user exists

["Misono, Tomohiro" <misono.tomohiro@jp.fujitsu.com>]

Test user 'progs-test' will be used to test the behavior of normal user.

In order to pass this check, add the user by "useradd -M progs-test".
Note that progs-test should not have root privileges.

Signed-off-by: Tomohiro Misono <misono.tomohiro@jp.fujitsu.com>
---
 tests/common | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/common b/tests/common
index fae30f1d..e8f7c061 100644
--- a/tests/common
+++ b/tests/common
@@ -307,6 +307,16 @@ check_global_prereq()
 	fi
 }
 
+check_testuser()
+{
+	id -u progs-test > /dev/null 2>&1
+	if [ $? -ne 0 ]; then
+		_not_run "Need to add user \"progs-test\""
+	fi
+	# Note that progs-test should not have root privileges
+	# otherwise test may not run as expected
+}
+
 check_image()
 {
 	local image
-- 
2.14.3