diff options
| -rw-r--r-- | doc/test-writing-guidelines.txt | 25 | ||||
| -rw-r--r-- | testcases/lib/test.sh | 27 |
2 files changed, 51 insertions, 1 deletions
diff --git a/doc/test-writing-guidelines.txt b/doc/test-writing-guidelines.txt index edd59051d..de06dc9b5 100644 --- a/doc/test-writing-guidelines.txt +++ b/doc/test-writing-guidelines.txt @@ -1247,11 +1247,34 @@ fi ... ------------------------------------------------------------------------------- -The tst_fs_has_free shell interface returns 0 if the specified free space is +The 'tst_fs_has_free' shell interface returns 0 if the specified free space is satisfied, 1 if not, and 2 on error. The second argument supports suffixes kB, MB and GB, the default unit is Byte. +.tst_retry +[source,sh] +------------------------------------------------------------------------------- +#!/bin/sh + +... + +# Retry ping command three times +tst_retry "ping -c 1 127.0.0.1" + +if [ $? -ne 0 ]; then + tst_resm TFAIL "Failed to ping 127.0.0.1" +else + tst_resm TPASS "Successfully pinged 127.0.0.1" +fi + +... +------------------------------------------------------------------------------- + +The 'tst_retry' function allows you to retry a command after waiting small +amount of time until it succeeds or until given amount of retries has been +reached (default is three attempts). + 2.3.3 Cleanup ^^^^^^^^^^^^^ diff --git a/testcases/lib/test.sh b/testcases/lib/test.sh index 1c9b12689..1753664da 100644 --- a/testcases/lib/test.sh +++ b/testcases/lib/test.sh @@ -134,6 +134,33 @@ tst_check_cmds() done } +# tst_retry "command" [times] +# try run command for specified times, default is 3. +# Function returns 0 if succeed in RETRIES times or the last retcode the cmd +# returned +tst_retry() +{ + local cmd="$1" + local RETRIES=${2:-"3"} + local i=$RETRIES + + while [ $i -gt 0 ]; do + eval "$cmd" + ret=$? + if [ $ret -eq 0 ]; then + break + fi + i=$((i-1)) + sleep 1 + done + + if [ $ret -ne 0 ]; then + tst_resm TINFO "Failed to execute '$cmd' after $RETRIES retries" + fi + + return $ret +} + # tst_timeout "command arg1 arg2 ..." timeout # Runs command for specified timeout (in seconds). # Function returns retcode of command or 1 if arguments are invalid. |