DejaGNU in cron job

[Gary C. Ackley]

Hello everyone,

I am new to DejaGNU - and so need a little advice...

Over the last few months, I setup some dejagnu expect scripts to help with
our integration testing.  So far, it has worked great.

However, I recently tried inserting it into our cron jobs for the nightly
builds and regression testing.  This is where things have started to go
wrong.  I am getting strange errors such as:
-------------------------------
Cmd: runtest
Loading ~/.dejagnurc
Loading site.exp
WARNING: Couldn't find the global config file.
WARNING: No tool specified
Test Run By anstest on Mon Sep  4 22:25:25 2006
Native configuration is i686-redhat-linux-gnu

                ===  tests ===

Schedule of variations:
    unix

Running target unix
Using /usr/share/dejagnu/baseboards/unix.exp as board description file for
target.
Using /usr/share/dejagnu/config/unix.exp as generic interface file for
target.
Using ./testsuite/config/unix.exp as tool-and-target-specific interface
file.
Loading unix.exp
redhat_rel: Red Hat Enterprise Linux WS release 4 (Nahant Update 4)


--Test Configuration--
...
Running ./testsuite/dac.test/DacFL.exp ...
ERROR: tcl error sourcing ./testsuite/dac.test/DacFL.exp.
ERROR: can not find channel named "exp0"
    while executing
"exp_wait"
    (procedure "stop_nml" line 7)
    invoked from within
"stop_nml"
    (procedure "stop_ans" line 24)
    invoked from within
"stop_ans"
    (procedure "run_tests" line 32)
    invoked from within
"run_tests [concat $CFG TestDacFL TestDacFLResume TestDacFLStandby
TestDacFLSuspend ]"
    (file "./testsuite/dac.test/DacFL.exp" line 24)
    invoked from within
"source ./testsuite/dac.test/DacFL.exp"
    ("uplevel" body line 1)
    invoked from within
"uplevel #0 source ./testsuite/dac.test/DacFL.exp"
    invoked from within
"catch "uplevel #0 source $test_file_name""
send: spawn id exp0 not open
    while executing
"send_user "$message\n""
    ("default" arm line 2)
    invoked from within
"case "$firstword" in {
        {"PASS:" "XFAIL:" "KFAIL:" "UNRESOLVED:" "UNSUPPORTED:" "UNTESTED:"}
{
            if $all_flag {
                send_user "$message\n"
                return "..."
    (procedure "clone_output" line 10)
    invoked from within
"clone_output "Running $test_file_name ...""
    (procedure "runtest" line 9)
    invoked from within
"runtest $test_name"
    ("foreach" body line 42)
    invoked from within
"foreach test_name [lsort [find ${dir} *.exp]] {
                        if { ${test_name} == "" } {
                            continue
                        }
                        # Ignore this one if asked to.
                        if { ${ignore..."
    ("foreach" body line 54)
    invoked from within
"foreach dir "${test_top_dirs}" {
                if { ${dir} != ${srcdir} } {
                    # Ignore this directory if is a directory to be
                    # ignored.
                    if {[info..."
    ("foreach" body line 121)
    invoked from within
"foreach pass $multipass {

        # multipass_name is set for `record_test' to use (see
framework.exp).
        if { [lindex $pass 0] != "" } {
            set multipass_..."
    ("foreach" body line 51)
    invoked from within
"foreach current_target $target_list {
    verbose "target is $current_target"
    set current_target_name $current_target
    set tlist [split $curren..."
    (file "/usr/share/dejagnu/runtest.exp" line 1625)
ERROR - Command returned failure! (256)
 at /home/anstest/nightlybuild/CMUSW_PROTOTYPE.pl line 344
-------------------------------

Any ideas?  I suspect is may have something to do with "cron" not having a
terminal - but I'm not sure, and don't know what I need to do to fix it.  

Any advice is greatly appreciated.

Thanks,

-Gary