hush testsuite: add many tests from ash testsuite

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

14 files changed, 135 insertions, 0 deletions

diff --git a/shell/hush_test/hush-signals/reap1.right b/shell/hush_test/hush-signals/reap1.right
new file mode 100644
index 000000000..7326d9603
--- /dev/null
+++ b/shell/hush_test/hush-signals/reap1.right
@@ -0,0 +1 @@
+Ok
diff --git a/shell/hush_test/hush-signals/reap1.tests b/shell/hush_test/hush-signals/reap1.tests
new file mode 100755
index 000000000..bf1a1f908
--- /dev/null
+++ b/shell/hush_test/hush-signals/reap1.tests
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+# Must not find us alive
+{ sleep 2; kill -9 $$; } 2>/dev/null &
+
+sleep 1 &
+PID=$!
+
+# We must exit the loop in one second.
+# We had bug 5304: builtins never waited for exited children
+while kill -0 $PID >/dev/null 2>&1; do
+    true
+done
+echo Ok
diff --git a/shell/hush_test/hush-signals/sigint1.right b/shell/hush_test/hush-signals/sigint1.right
new file mode 100644
index 000000000..a9094b056
--- /dev/null
+++ b/shell/hush_test/hush-signals/sigint1.right
@@ -0,0 +1 @@
+Sending SIGINT to main shell PID
diff --git a/shell/hush_test/hush-signals/sigint1.tests b/shell/hush_test/hush-signals/sigint1.tests
new file mode 100755
index 000000000..3d483d32a
--- /dev/null
+++ b/shell/hush_test/hush-signals/sigint1.tests
@@ -0,0 +1,41 @@
+# What should happen if non-interactive shell gets SIGINT?
+
+(sleep 1; echo Sending SIGINT to main shell PID; exec kill -INT $$) &
+
+# We create a child which exits with 0 even on SIGINT
+# (The complex command is necessary only if SIGINT is generated by ^C,
+# in this testcase even bare "sleep 2" would do because
+# in the testcase we don't send SIGINT *to the child*...)
+$THIS_SH -c 'trap "exit 0" SIGINT; sleep 2'
+
+# In one second, we (main shell) get SIGINT here.
+# The question is whether we should, or should not, exit.
+
+# bash will not stop here. It will execute next command(s).
+
+# The rationale for this is described here:
+# http://www.cons.org/cracauer/sigint.html
+#
+# Basically, bash will not exit on SIGINT immediately if it waits
+# for a child. It will wait for the child to exit.
+# If child exits NOT by dying on SIGINT, then bash will not exit.
+#
+# The idea is that the following script:
+# | emacs file.txt
+# | more cmds
+# User may use ^C to interrupt editor's ops like search. But then
+# emacs exits normally. User expects that script doesn't stop.
+#
+# This is a nice idea, but detecting "did process really exit
+# with SIGINT?" is racy. Consider:
+# | bash -c 'while true; do /bin/true; done'
+# When ^C is pressed while bash waits for /bin/true to exit,
+# it may happen that /bin/true exits with exitcode 0 before
+# ^C is delivered to it as SIGINT. bash will see SIGINT, then
+# it will see that child exited with 0, and bash will NOT EXIT.
+
+# Therefore we do not implement bash behavior.
+# I'd say that emacs need to put itself into a separate pgrp
+# to isolate shell from getting stray SIGINTs from ^C.
+
+echo Next command after SIGINT was executed
diff --git a/shell/hush_test/hush-signals/signal2.right b/shell/hush_test/hush-signals/signal2.right
new file mode 100644
index 000000000..a2af919c0
--- /dev/null
+++ b/shell/hush_test/hush-signals/signal2.right
@@ -0,0 +1,3 @@
+child sleeps
+child exits as expected
+parent exits
diff --git a/shell/hush_test/hush-signals/signal2.tests b/shell/hush_test/hush-signals/signal2.tests
new file mode 100755
index 000000000..df639ca2c
--- /dev/null
+++ b/shell/hush_test/hush-signals/signal2.tests
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+$THIS_SH -c '
+cleanup() {
+    echo "child exits as expected"
+    exit
+}
+trap cleanup HUP
+echo "child sleeps"
+sleep 1
+echo "BAD exit from child!"
+' &
+
+child=$!
+sleep 0.1 # let child install handler first
+kill -HUP $child
+wait
+echo "parent exits"
diff --git a/shell/hush_test/hush-signals/signal3.right b/shell/hush_test/hush-signals/signal3.right
new file mode 100644
index 000000000..3113ba5cf
--- /dev/null
+++ b/shell/hush_test/hush-signals/signal3.right
@@ -0,0 +1,4 @@
+child sleeps
+child got HUP
+child exits
+parent exits
diff --git a/shell/hush_test/hush-signals/signal3.tests b/shell/hush_test/hush-signals/signal3.tests
new file mode 100755
index 000000000..b56c2d97e
--- /dev/null
+++ b/shell/hush_test/hush-signals/signal3.tests
@@ -0,0 +1,17 @@
+#!/bin/sh
+
+$THIS_SH -c '
+hup() {
+    echo "child got HUP"
+}
+trap hup HUP
+echo "child sleeps"
+sleep 1
+echo "child exits"
+' &
+
+child=$!
+sleep 0.1 # let child install handler first
+kill -HUP $child
+wait
+echo "parent exits"
diff --git a/shell/hush_test/hush-signals/signal5.right b/shell/hush_test/hush-signals/signal5.right
new file mode 100644
index 000000000..7cfd4110e
--- /dev/null
+++ b/shell/hush_test/hush-signals/signal5.right
@@ -0,0 +1,12 @@
+Sleeping
+Sleeping
+Waiting
+2 sec passed, sending USR1 to parent
+USR1 received
+Wait exit code: 138
+Waiting
+3 sec passed, sending USR1 to parent
+USR1 received
+Wait exit code: 138
+Waiting
+Wait returned 0
diff --git a/shell/hush_test/hush-signals/signal5.tests b/shell/hush_test/hush-signals/signal5.tests
new file mode 100755
index 000000000..179bcdd80
--- /dev/null
+++ b/shell/hush_test/hush-signals/signal5.tests
@@ -0,0 +1,14 @@
+trap "echo USR1 received" USR1
+stub() {
+    echo "Sleeping"
+    sleep $1
+    echo "$1 sec passed, sending USR1 to parent"
+    kill -USR1 $$
+}
+stub 3 &
+stub 2 &
+sleep 1
+until { echo "Waiting"; wait; } do
+    echo "Wait exit code: $?"
+done
+echo "Wait returned 0"
diff --git a/shell/hush_test/hush-signals/signal6.right b/shell/hush_test/hush-signals/signal6.right
new file mode 100644
index 000000000..df4d9306a
--- /dev/null
+++ b/shell/hush_test/hush-signals/signal6.right
@@ -0,0 +1,2 @@
+got TERM
+Done: 0
diff --git a/shell/hush_test/hush-signals/signal6.tests b/shell/hush_test/hush-signals/signal6.tests
new file mode 100755
index 000000000..3ce151060
--- /dev/null
+++ b/shell/hush_test/hush-signals/signal6.tests
@@ -0,0 +1,2 @@
+{ trap "echo got TERM" TERM; sleep 3; }& sleep 1; kill $!; wait
+echo Done: $?
diff --git a/shell/hush_test/hush-signals/sigquit_exec.right b/shell/hush_test/hush-signals/sigquit_exec.right
new file mode 100644
index 000000000..a8041929a
--- /dev/null
+++ b/shell/hush_test/hush-signals/sigquit_exec.right
@@ -0,0 +1,2 @@
+SigIgn:	0000000000000000
+SigIgn:	0000000000000000
diff --git a/shell/hush_test/hush-signals/sigquit_exec.tests b/shell/hush_test/hush-signals/sigquit_exec.tests
new file mode 100755
index 000000000..24bda6921
--- /dev/null
+++ b/shell/hush_test/hush-signals/sigquit_exec.tests
@@ -0,0 +1,4 @@
+# Should show no masked signals in both cases.
+# We had a bug where SIGQUIT was masked on exec.
+grep SigIgn: /proc/self/status
+exec grep SigIgn: /proc/self/status