ash testsuite: add return_in_trap1.tests

Currently it fails

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

shell/hush_test/hush-signals/catch.right

@@ -0,0 +1,5 @@
+sending USR2
+caught
+sending USR2
+sending USR2
+USR2

shell/hush_test/hush-signals/catch.tests

@@ -0,0 +1,20 @@
+# avoid ugly warnings about signals not being caught
+trap ":" USR1 USR2
+
+"$THIS_SH" -c '
+trap "echo caught" USR2
+echo "sending USR2"
+kill -USR2 $$
+
+trap "" USR2
+echo "sending USR2"
+kill -USR2 $$
+
+trap "-" USR2
+echo "sending USR2"
+kill -USR2 $$
+
+echo "not reached"
+'
+
+trap "-" USR1 USR2

shell/hush_test/hush-signals/exit.right

@@ -0,0 +1,12 @@
+cow
+moo
+Traps1:
+trap -- 'exitfunc' EXIT
+Traps2:
+trap -- 'echo Should not run' EXIT
+Check1: 42
+Traps1:
+trap -- 'exitfunc' EXIT
+Traps2:
+trap -- 'echo Should not run' EXIT
+Check2: 42

shell/hush_test/hush-signals/exit.tests

@@ -0,0 +1,34 @@
+"$THIS_SH" -c 'trap "echo cow" 0'
+"$THIS_SH" -c 'trap "echo moo" EXIT'
+"$THIS_SH" -c 'trap "echo no" 0; trap 0'
+
+(
+exitfunc() {
+        echo "Traps1:"
+        trap
+        # EXIT trap is disabled after it is triggered,
+        # it can not be "re-armed" like this:
+        trap "echo Should not run" EXIT
+        echo "Traps2:"
+        trap
+}
+trap 'exitfunc' EXIT
+exit 42
+)
+echo Check1: $?
+
+(
+exitfunc() {
+        echo "Traps1:"
+        trap
+        # EXIT trap is disabled after it is triggered,
+        # it can not be "re-armed" like this:
+        trap "echo Should not run" EXIT
+        echo "Traps2:"
+        trap
+        exit 42
+}
+trap 'exitfunc' EXIT
+exit 66
+)
+echo Check2: $?

shell/hush_test/hush-signals/return_in_trap1.right

@@ -0,0 +1,4 @@
+a:2
+b:0
+Trap
+d:3

shell/hush_test/hush-signals/return_in_trap1.tests

@@ -0,0 +1,18 @@
+a() {
+	(exit 2)
+	echo a:$?
+	(kill -s USR1 $$; echo b:$?; exit 3)
+	echo c:$?	# does not execute
+	(exit 4)
+}
+
+trap "echo Trap; return" USR1
+a
+
+echo d:$?
+# It's debatable what is the correct value above.
+# Does 'return' in trap sees $? == 2 or $? == 3?
+# IOW: after (kill..), does shell first wait for its completion
+# and sets $?, then checks pending signals and runs a trap handler,
+# or does it first checks pending signals and runs handler?
+# hush does the former, and prints 3.

shell/hush_test/hush-signals/save-ret.right

@@ -0,0 +1,2 @@
+YEAH
+0

shell/hush_test/hush-signals/save-ret.tests

@@ -0,0 +1,4 @@
+# make sure we do not corrupt $? across traps
+trap "echo YEAH; false" USR1
+kill -USR1 $$
+echo $?

shell/hush_test/hush-signals/savetrap.right

@@ -0,0 +1,8 @@
+trap -- 'echo Exiting' EXIT
+trap -- 'echo WINCH!' WINCH
+trap -- 'echo Exiting' EXIT
+trap -- 'echo WINCH!' WINCH
+trap -- 'echo Exiting' EXIT
+trap -- 'echo WINCH!' WINCH
+Done
+Exiting

shell/hush_test/hush-signals/savetrap.tests

@@ -0,0 +1,9 @@
+trap 'echo Exiting' EXIT
+trap 'echo WINCH!' SIGWINCH
+v=` trap   `
+echo "$v"
+v=$(	trap )
+echo "$v"
+v=`trap`
+echo "$v"
+echo Done

shell/hush_test/hush-signals/signal7.right

@@ -0,0 +1 @@
+Bug detected: 0

shell/hush_test/hush-signals/signal7.tests

@@ -0,0 +1,18 @@
+bug() {
+	trap : exit
+	# Bug was causing sh to be run in subshell,
+	# as if this line is replaced with (sh -c ...; exit $?) &
+	# here:
+	sh -c 'echo REAL_CHILD=$$' &
+	echo PARENTS_IDEA_OF_CHILD=$!
+	wait  # make sure bkgd shell completes
+}
+
+bug | {
+while read varval; do
+	eval $varval
+done
+test x"$REAL_CHILD" != x"" \
+&& test x"$REAL_CHILD" = x"$PARENTS_IDEA_OF_CHILD"
+echo "Bug detected: $?"
+}

shell/hush_test/hush-signals/signal_read1.right

@@ -0,0 +1 @@
+Got HUP:0

shell/hush_test/hush-signals/signal_read1.tests

@@ -0,0 +1,5 @@
+(sleep 1; kill -HUP $$) &
+trap 'echo "Got HUP:$?"; exit' HUP
+while true; do
+	read ignored
+done

shell/hush_test/hush-signals/signal_read2.right

@@ -0,0 +1,2 @@
+HUP
+Done:129

shell/hush_test/hush-signals/signal_read2.tests

@@ -0,0 +1,7 @@
+$THIS_SH -c '
+(sleep 1; kill -HUP $$) &
+while true; do
+	read ignored
+done
+'
+echo "Done:$?"

shell/hush_test/hush-signals/subshell.right

@@ -0,0 +1,21 @@
+trap -- '' HUP
+trap -- '' QUIT
+trap -- '' SYS
+Ok
+trap -- '' HUP
+trap -- '' QUIT
+trap -- '' SYS
+Ok
+trap -- '' HUP
+trap -- '' QUIT
+trap -- '' SYS
+Ok
+trap -- '' HUP
+trap -- '' QUIT
+trap -- '' SYS
+Ok
+trap -- '' HUP
+trap -- '' QUIT
+trap -- '' SYS
+TERM
+Done

shell/hush_test/hush-signals/subshell.tests

@@ -0,0 +1,19 @@
+# Non-empty traps should be reset in subshell
+
+# HUP is special in interactive shells
+trap '' HUP
+# QUIT is always special
+trap '' QUIT
+# SYS is not special
+trap '' SYS
+# WINCH is harmless
+trap 'bad: caught WINCH' WINCH
+# With TERM we'll check whether it is reset
+trap 'bad: caught TERM'  TERM
+
+(trap; "$THIS_SH" -c 'kill -HUP   $PPID'; echo Ok)
+(trap; "$THIS_SH" -c 'kill -QUIT  $PPID'; echo Ok)
+(trap; "$THIS_SH" -c 'kill -SYS   $PPID'; echo Ok)
+(trap; "$THIS_SH" -c 'kill -WINCH $PPID'; echo Ok)
+(trap; "$THIS_SH" -c 'kill -TERM  $PPID'; echo Bad: TERM is not reset)
+echo Done

shell/hush_test/hush-signals/usage.right

@@ -0,0 +1,14 @@
+___
+___
+___
+trap -- 'a' EXIT
+trap -- 'a' INT
+trap -- 'a' USR1
+trap -- 'a' USR2
+___
+___
+trap -- 'a' USR1
+trap -- 'a' USR2
+___
+___
+trap -- 'a' USR2

shell/hush_test/hush-signals/usage.tests

@@ -0,0 +1,23 @@
+# no output -- default state
+echo ___
+trap
+
+# assign some traps
+echo ___
+trap "a" EXIT INT USR1 USR2
+
+# show them all
+echo ___
+trap
+
+# clear one
+echo ___
+trap 0 INT
+echo ___
+trap
+
+# clear another
+echo ___
+trap "-" USR1
+echo ___
+trap