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"""
Test that the lldb driver's batch mode works correctly.
"""
from __future__ import print_function
import os
import time
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class DriverBatchModeTest (TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Our simple source filename.
self.source = 'main.c'
self.victim = None
def expect_string(self, string):
import pexpect
"""This expects for "string", with timeout & EOF being test fails."""
try:
self.child.expect_exact(string)
except pexpect.EOF:
self.fail("Got EOF waiting for '%s'" % (string))
except pexpect.TIMEOUT:
self.fail("Timed out waiting for '%s'" % (string))
@skipIfRemote # test not remote-ready llvm.org/pr24813
@expectedFlakeyFreeBSD("llvm.org/pr25172 fails rarely on the buildbot")
@expectedFlakeyLinux("llvm.org/pr25172")
@expectedFailureAll(
oslist=["windows"],
bugnumber="llvm.org/pr22274: need a pexpect replacement for windows")
def test_batch_mode_run_crash(self):
"""Test that the lldb driver's batch mode works correctly."""
self.build()
self.setTearDownCleanup()
import pexpect
exe = os.path.join(os.getcwd(), "a.out")
prompt = "(lldb) "
# Pass CRASH so the process will crash and stop in batch mode.
run_commands = ' -b -o "break set -n main" -o "run" -o "continue" -k "frame var touch_me_not"'
self.child = pexpect.spawn(
'%s %s %s %s -- CRASH' %
(lldbtest_config.lldbExec, self.lldbOption, run_commands, exe))
child = self.child
# Turn on logging for what the child sends back.
if self.TraceOn():
child.logfile_read = sys.stdout
# We should see the "run":
self.expect_string("run")
# We should have hit the breakpoint & continued:
self.expect_string("continue")
# The App should have crashed:
self.expect_string("About to crash")
# The -k option should have printed the frame variable once:
self.expect_string('(char *) touch_me_not')
# Then we should have a live prompt:
self.expect_string(prompt)
self.child.sendline("frame variable touch_me_not")
self.expect_string('(char *) touch_me_not')
self.deletePexpectChild()
@skipIfRemote # test not remote-ready llvm.org/pr24813
@expectedFlakeyFreeBSD("llvm.org/pr25172 fails rarely on the buildbot")
@expectedFlakeyLinux("llvm.org/pr25172")
@expectedFailureAll(
oslist=["windows"],
bugnumber="llvm.org/pr22274: need a pexpect replacement for windows")
def test_batch_mode_run_exit(self):
"""Test that the lldb driver's batch mode works correctly."""
self.build()
self.setTearDownCleanup()
import pexpect
exe = os.path.join(os.getcwd(), "a.out")
prompt = "(lldb) "
# Now do it again, and make sure if we don't crash, we quit:
run_commands = ' -b -o "break set -n main" -o "run" -o "continue" '
self.child = pexpect.spawn(
'%s %s %s %s -- NOCRASH' %
(lldbtest_config.lldbExec, self.lldbOption, run_commands, exe))
child = self.child
# Turn on logging for what the child sends back.
if self.TraceOn():
child.logfile_read = sys.stdout
# We should see the "run":
self.expect_string("run")
# We should have hit the breakpoint & continued:
self.expect_string("continue")
# The App should have not have crashed:
self.expect_string("Got there on time and it did not crash.")
# Then we should have a live prompt:
self.expect_string("exited")
index = self.child.expect([pexpect.EOF, pexpect.TIMEOUT])
self.assertTrue(
index == 0,
"lldb didn't close on successful batch completion.")
def closeVictim(self):
if self.victim is not None:
self.victim.close()
self.victim = None
@skipIfRemote # test not remote-ready llvm.org/pr24813
@expectedFlakeyFreeBSD("llvm.org/pr25172 fails rarely on the buildbot")
@expectedFlakeyLinux("llvm.org/pr25172")
@expectedFailureAll(
oslist=["windows"],
bugnumber="llvm.org/pr22274: need a pexpect replacement for windows")
def test_batch_mode_attach_exit(self):
"""Test that the lldb driver's batch mode works correctly."""
self.build()
self.setTearDownCleanup()
import pexpect
exe = os.path.join(os.getcwd(), "a.out")
prompt = "(lldb) "
# Finally, start up the process by hand, attach to it, and wait for its completion.
# Attach is funny, since it looks like it stops with a signal on most Unixen so
# care must be taken not to treat that as a reason to exit batch mode.
# Start up the process by hand and wait for it to get to the wait loop.
self.victim = pexpect.spawn('%s WAIT' % (exe))
if self.victim is None:
self.fail("Could not spawn ", exe, ".")
self.addTearDownHook(self.closeVictim)
if self.TraceOn():
self.victim.logfile_read = sys.stdout
self.victim.expect("PID: ([0-9]+) END")
if self.victim.match is None:
self.fail("Couldn't get the target PID.")
victim_pid = int(self.victim.match.group(1))
self.victim.expect("Waiting")
run_commands = ' -b -o "process attach -p %d" -o "breakpoint set --file %s -p \'Stop here to unset keep_waiting\' -N keep_waiting" -o "continue" -o "break delete keep_waiting" -o "expr keep_waiting = 0" -o "continue" ' % (
victim_pid, self.source)
self.child = pexpect.spawn(
'%s %s %s %s' %
(lldbtest_config.lldbExec,
self.lldbOption,
run_commands,
exe))
child = self.child
# Turn on logging for what the child sends back.
if self.TraceOn():
child.logfile_read = sys.stdout
# We should see the "run":
self.expect_string("attach")
self.expect_string(prompt + "continue")
self.expect_string(prompt + "continue")
# Then we should see the process exit:
self.expect_string("Process %d exited with status" % (victim_pid))
victim_index = self.victim.expect([pexpect.EOF, pexpect.TIMEOUT])
self.assertTrue(victim_index == 0, "Victim didn't really exit.")
index = self.child.expect([pexpect.EOF, pexpect.TIMEOUT])
self.assertTrue(
index == 0,
"lldb didn't close on successful batch completion.")
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