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-rw-r--r--tests/lock.test35
1 files changed, 12 insertions, 23 deletions
diff --git a/tests/lock.test b/tests/lock.test
index 2fe6ee4..92778d1 100644
--- a/tests/lock.test
+++ b/tests/lock.test
@@ -10,6 +10,11 @@
source [file dirname [info script]]/testing.tcl
+needs constraint jim
+# Really we want to check if locking is supported, but there
+# is no easy way to do that, so use the existence of os.wait as a proxy
+needs cmd os.wait
+
set fh [open locktest.file w]
test lock-1.1 {grab lock} {
@@ -29,32 +34,16 @@ test lock-1.4 {release lock again} {
} 1
test lock-1.5 {grab lock from sub-process} {
- switch [set pid [os.fork]] {
- -1 { error "Fork error." }
- 0 {
- # Child process
- $fh lock
- sleep 2
- puts $fh [$fh unlock]
- exit
- }
- default {
- sleep 1
- set stat [$fh lock]
- set stat
- }
- }
+ # Run a child process that grabs the lock for 0.5 seconds
+ set pid [exec [info nameofexecutable] -e {set fh [open locktest.file r+]; $fh lock; sleep 0.5} >/dev/null &]
+ sleep 0.1
+ # Try to grab the lock - should fail
+ set stat [$fh lock]
+ sleep 0.5
+ set stat
} 0
-# fcntl() allows unlock on non-held lock so unlock will always return 1
-#set x [os.wait $pid]
-#test lock-1.6 {check unlock in child process} {
-# $fh seek 0 start
-# $fh read 1
-#} 1
-
$fh close
file delete locktest.file
testreport
-