tests: Add pane_status command to check for success of issued commands

When we use pane_wait to wait for a command issued to a tmux pane to finish
we have no idea whether the command succeeded or not.  This means that the
test scripts can keep running long after the point something vital has
failed, making it difficult to work out what went wrong.

Add a new pane_status command that checks for success of the issued command
and use it in most places instead of pane_wait.  We still need explicit
pane_wait where we're gathering explicit output with pane_parse, because
the way we check the status with 'echo $?' means we lose track of that
output.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[sbrivio:
 - instead of quitting the script, make a test fail if a command
    issued in a pane fails during a test, and loop until the status code is
    numeric in pane_status() as a hack to make it a bit more robust
 - retain usage of pane_wait() in iperf3 and teardown functions as we
   interrupt iperf3, passt, and pasta, so a non-zero exit code is expected
 - drop bogus ns_{1,2}_wait() calls in teardown_two_guests(), those
   functions were never implemented
 - use pane_status() for "guest" test directives too
]
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

1 files changed, 19 insertions, 19 deletions

diff --git a/test/lib/test b/test/lib/test
index 2cfec9a..4262343 100755
--- a/test/lib/test
+++ b/test/lib/test
@@ -52,7 +52,7 @@ test_iperf3() {
 
 	pane_run "${__pane}" 'for i in $(seq 0 '${__procs}'); do'	\
 		':> s${i}.bw; done'
-	pane_wait "${__pane}"
+	pane_status "${__pane}"
 
 	if [ ${UDP_CLIENT} -eq 0 ]; then
 		pane_run "${__pane}" 'for i in $(seq 0 '${__procs}');'	\
@@ -70,7 +70,7 @@ test_iperf3() {
 			'done'
 	fi
 
-	pane_wait "${__pane}"
+	pane_status "${__pane}"
 	sleep 45
 	pane_run "${__pane}" 'for i in $(seq 0 '${__procs}'); do'	\
 		 'kill -INT $(cat s${i}.pid) 2>/dev/null; done'
@@ -83,7 +83,7 @@ test_iperf3() {
 	pane_parse "${__pane}"
 	pane_run "${__pane}" 'for i in $(seq 0 '${__procs}'); do'	\
 		'rm -f s${i}.bw; done'
-	pane_wait "${__pane}"
+	pane_status "${__pane}"
 }
 
 test_one_line() {
@@ -139,13 +139,13 @@ test_one_line() {
 		;;
 	"host")
 		pane_run HOST "${__arg}"
-		pane_wait HOST
+		pane_status HOST || TEST_ONE_nok=1
 		;;
 	"hostb")
 		pane_run HOST "${__arg}"
 		;;
 	"hostw")
-		pane_wait HOST
+		pane_status HOST || TEST_ONE_nok=1
 		;;
 	"hint")
 		tmux send-keys -t ${PANE_HOST} "C-c"
@@ -157,13 +157,13 @@ test_one_line() {
 		;;
 	"passt")
 		pane_run PASST "${__arg}"
-		pane_wait PASST
+		pane_status PASST || TEST_ONE_nok=1
 		;;
 	"passtb")
 		pane_run PASST "${__arg}"
 		;;
 	"passtw")
-		pane_wait PASST
+		pane_status PASST || TEST_ONE_nok=1
 		;;
 	"pout")
 		__varname="${__arg%% *}"
@@ -173,23 +173,23 @@ test_one_line() {
 		;;
 	"guest")
 		pane_run GUEST "${__arg}"
-		pane_wait GUEST
+		pane_status GUEST || TEST_ONE_nok=1
 		;;
 	"guestb")
 		pane_run GUEST "${__arg}"
 		;;
 	"guestw")
-		pane_wait GUEST
+		pane_status GUEST || TEST_ONE_nok=1
 		;;
 	"guest1")
 		pane_run GUEST_1 "${__arg}"
-		pane_wait GUEST_1
+		pane_status GUEST_1 || TEST_ONE_nok=1
 		;;
 	"guest1b")
 		pane_run GUEST_1 "${__arg}"
 		;;
 	"guest1w")
-		pane_wait GUEST_1
+		pane_status GUEST_1 || TEST_ONE_nok=1
 		;;
 	"gtools")
 		pane_run GUEST 'which '"${__arg}"' >/dev/null || echo skip'
@@ -208,25 +208,25 @@ test_one_line() {
 		;;
 	"guest2")
 		pane_run GUEST_2 "${__arg}"
-		pane_wait GUEST_2
+		pane_status GUEST_2 || TEST_ONE_nok=1
 		;;
 	"guest2b")
 		pane_run GUEST_2 "${__arg}"
 		;;
 	"guest2w")
-		pane_wait GUEST_2
+		pane_status GUEST_2 || TEST_ONE_nok=1
 		;;
 	"ns")
 		pane_run NS "${__arg}"
-		pane_wait NS
+		pane_status NS || TEST_ONE_nok=1
 		;;
 	"ns1")
 		pane_run NS1 "${__arg}"
-		pane_wait NS1
+		pane_status NS1 || TEST_ONE_nok=1
 		;;
 	"ns2")
 		pane_run NS2 "${__arg}"
-		pane_wait NS2
+		pane_status NS2 || TEST_ONE_nok=1
 		;;
 	"nsb")
 		pane_run NS "${__arg}"
@@ -238,13 +238,13 @@ test_one_line() {
 		pane_run NS2 "${__arg}"
 		;;
 	"nsw")
-		pane_wait NS
+		pane_status NS || TEST_ONE_nok=1
 		;;
 	"ns1w")
-		pane_wait NS1
+		pane_status NS1 || TEST_ONE_nok=1
 		;;
 	"ns2w")
-		pane_wait NS2
+		pane_status NS2 || TEST_ONE_nok=1
 		;;
 	"nstools")
 		pane_run NS 'which '"${__arg}"' >/dev/null || echo skip'