From 5950bcd1214e91af3fdb618a65e34d7d5360a188 Mon Sep 17 00:00:00 2001
From: Nikolay Borisov <nborisov@suse.com>
Date: Mon, 3 Sep 2018 13:02:57 +0300
Subject: [PATCH] btrfs-progs: tests: add test for missing device delete error
 value

Add a test which ensures the kernel returns the correct error value
when missing device removal is requested. This test verifies that kernel
refactoring didn't break the return value.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
---
 .../011-delete-missing-device/test.sh           | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/tests/misc-tests/011-delete-missing-device/test.sh b/tests/misc-tests/011-delete-missing-device/test.sh
index 4c976421..a6b2e29c 100755
--- a/tests/misc-tests/011-delete-missing-device/test.sh
+++ b/tests/misc-tests/011-delete-missing-device/test.sh
@@ -44,6 +44,22 @@ test_delete_missing()
 	run_check_umount_test_dev
 }
 
+test_missing_error()
+{
+	local out
+
+	run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f "$TEST_DEV"
+	run_check_mount_test_dev
+	out=$(run_mustfail_stdout "device remove succeeded" \
+		$SUDO_HELPER "$TOP/btrfs" device remove missing "$TEST_MNT")
+
+	if ! echo "$out" | grep -q "no missing devices found to remove"; then
+		_fail "IOCTL returned unexpected error value"
+	fi
+
+	run_check_umount_test_dev
+}
+
 setup_loopdevs 4
 prepare_loopdevs
 dev1=${loopdevs[1]}
@@ -53,5 +69,6 @@ TEST_DEV=$dev1
 test_do_mkfs -m raid1 -d raid1
 test_wipefs
 test_delete_missing
+test_missing_error
 
 cleanup_loopdevs