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#!/usr/bin/env python3
###############################################################################
# Top contributors (to current version):
# Andrew Reynolds
#
# This file is part of the cvc5 project.
#
# Copyright (c) 2009-2025 by the authors listed in the file AUTHORS
# in the top-level source directory and their institutional affiliations.
# All rights reserved. See the file COPYING in the top-level source
# directory for licensing information.
# #############################################################################
#
# A simple test file to interact with cvc5 via the interactive shell with
# define-fun-rec.
##
import sys
import pexpect
def error_message(s):
return "Unexpected output '" + s + "'"
def expect_exact(child, s):
child.expect_exact(s)
assert child.before == b"", error_message(child.before.decode('UTF-8'))
assert child.after == s.encode('UTF-8'), error_message(child.after)
def sendline(child, s):
child.sendline(s)
expect_exact(child, s+'\r\n')
def check_iteractive_shell_define_fun_rec_multiline():
"""
Interacts with cvc5's interactive shell and checks that define-fun-rec
commands that span multiple lines are properly handled.
"""
# Open cvc5
child = pexpect.spawn("bin/cvc5", timeout=1)
# We expect to see the cvc5 prompt
child.expect("cvc5> ")
sendline(child, "(set-logic ALL)")
expect_exact(child, "cvc5> ")
sendline(child, "(define-fun-rec")
expect_exact(child, "... > ")
sendline(child, "p () Bool")
expect_exact(child, "... > ")
sendline(child, "false)")
expect_exact(child, "cvc5> ")
sendline(child, "(define-funs-rec")
expect_exact(child, "... > ")
sendline(child, "((q () Bool))")
expect_exact(child, "... > ")
sendline(child, "(false))")
expect_exact(child, "cvc5> ")
sendline(child,"(assert (or p q))")
expect_exact(child, "cvc5> ")
sendline(child,"(check-sat)")
expect_exact(child,"unsat\r\ncvc5> ")
return 0
def main():
"""
Runs our interactive shell test
Caveats:
* If we don't have the "pexpect" model, the test doesn't get run, but
passes
* We expect pexpect to raise and exit with a non-zero exit code if any
of the steps fail
"""
# If any of the "steps" fail, the pexpect will raise a Python will exit
# with a non-zero error code
sys.exit(check_iteractive_shell_define_fun_rec_multiline())
if __name__ == "__main__":
main()
# EOF
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