check: print device names provided to test_device_array()

When a test case has test_device(), blktests prints the name of the test
target device provided to test_device(). The commit 653ace8
("check, new: introduce test_device_array()") introduced the support for
test_device_array() which runs the test for multiple devices. However,
when the test case has test_device_array(), blktests does not print the
names of the test target devices.

Modify the check script to print the test target device names. For that
purpose, factor out two _output_status() calls into a new helper
function _output_test_name(). In that function, print TEST_DEV_ARRAY
elements which are provided to test_dev_array() as the test target.

After this commit, md/003 run will look like as follows:

 md/003 => nvme1n1 nvme2n1 nvme3n1 nvme4n1 (test md atomic writes for NVMe drives) [passed]
   runtime  18.678s  ...  18.446s

Tested-by: John Garry <[email protected]>
Signed-off-by: Shin'ichiro Kawasaki <[email protected]>

Author: kawasaki

check

@@ -252,12 +252,25 @@ _output_notrun() {
 	_output_skip_reasons
 }
 
-_output_last_test_run() {
+_output_test_name() {
+	local dev
+	local -a devs
+	local status="$1"
+
 	if [[ "${TEST_DEV:-}" ]]; then
-		_output_status "$TEST_NAME => $(basename "$TEST_DEV")" ""
+		_output_status "$TEST_NAME => $(basename "$TEST_DEV")" "$status"
+	elif [[ "${TEST_DEV_ARRAY:-}" ]]; then
+		for dev in "${TEST_DEV_ARRAY[@]}"; do
+			devs+=("${dev##*/}")
+		done
+		_output_status "$TEST_NAME => ${devs[*]}" "$status"
 	else
-		_output_status "$TEST_NAME" ""
+		_output_status "$TEST_NAME" "$status"
 	fi
+}
+
+_output_last_test_run() {
+	_output_test_name ""
 
 	{
 	local key
@@ -277,11 +290,7 @@ _output_test_run() {
 	if [[ $status = pass || $status = fail ]]; then
 		status+="ed"
 	fi
-	if [[ "${TEST_DEV:-}" ]]; then
-		_output_status "$TEST_NAME => $(basename "$TEST_DEV")" "$status"
-	else
-		_output_status "$TEST_NAME" "$status"
-	fi
+	_output_test_name "$status"
 
 	{
 	local key last_value value