redict/tests/unit/moduleapi/fork.tcl
Ozan Tezcan 568c2e039b
Set errno to EEXIST in redisFork() if child process exists (#10059)
Callers of redisFork() are logging `strerror(errno)` on failure.
`errno` is not set when there is already a child process, causing printing
current value of errno which was set before `redisFork()` call. 

Setting errno to EEXIST on this failure to provide more meaningful error message.
2022-01-06 09:54:21 +02:00

43 lines
1.1 KiB
Tcl

set testmodule [file normalize tests/modules/fork.so]
proc count_log_message {pattern} {
set status [catch {exec grep -c $pattern < [srv 0 stdout]} result]
if {$status == 1} {
set result 0
}
return $result
}
start_server {tags {"modules"}} {
r module load $testmodule
test {Module fork} {
# the argument to fork.create is the exitcode on termination
r fork.create 3
wait_for_condition 20 100 {
[r fork.exitcode] != -1
} else {
fail "fork didn't terminate"
}
r fork.exitcode
} {3}
test {Module fork kill} {
r fork.create 3
after 250
r fork.kill
assert {[count_log_message "fork child started"] eq "2"}
assert {[count_log_message "Received SIGUSR1 in child"] eq "1"}
assert {[count_log_message "fork child exiting"] eq "1"}
}
test {Module fork twice} {
r fork.create 0
after 250
catch {r fork.create 0}
assert {[count_log_message "Can't fork for module: File exists"] eq "1"}
}
}