replxx-test-client-history-save.sh

#!/usr/bin/env bash

# XXX: cannot use expect since we need two clients
# XXX: requires bash 4.4+

function assert()
{
    if ! "$@"; then
        echo "'$*' failed" >&2
        exit 1
    fi
}

rm -f replxx_history.txt

coproc client1 { replxx-example-cxx-api >& client1.txt; }
# Will produce warning, but should work:
#     warning: execute_coproc: coproc [3418021:client1] still exists
coproc client2 { replxx-example-cxx-api >& client2.txt; }

# save fds, to avoid exec for each echo
exec 10>&${client1[1]}-
exec 20>&${client2[1]}-

# .hist_autosave
echo .hist_autosave >&10
echo .hist_autosave >&20

# regular history
echo first_line  >&10
echo second_line >&20

# wait until
# - the replxx_history.txt will be dumped
sleep 0.1

assert grep -F -q first_line  replxx_history.txt
assert grep -F -q second_line replxx_history.txt

# dump history
echo .history >&10
echo .history >&20

# wait until
# - client1.txt
# - client2.txt
sleep 0.1

assert test $(grep -c -F second_line client1.txt) -eq 0
assert test $(grep -c -F first_line  client2.txt) -eq 0

# quit
echo .quit >&10
echo .quit >&20

wait $client1_PID
wait $client2_PID

echo OK