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"""
Test lldb 'commands regex' command which allows the user to create a regular expression command.
"""
from __future__ import print_function
import os
import lldb
from lldbsuite.test.lldbtest import *
class CommandRegexTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
@expectedFailureHostWindows("llvm.org/pr22274: need a pexpect replacement for windows")
@no_debug_info_test
def test_command_regex(self):
"""Test a simple scenario of 'command regex' invocation and subsequent use."""
import pexpect
prompt = "(lldb) "
regex_prompt = "Enter one of more sed substitution commands in the form: 's/<regex>/<subst>/'.\r\nTerminate the substitution list with an empty line.\r\n"
regex_prompt1 = "\r\n"
child = pexpect.spawn('%s %s' % (lldbtest_config.lldbExec, self.lldbOption))
# Turn on logging for what the child sends back.
if self.TraceOn():
child.logfile_read = sys.stdout
# So that the spawned lldb session gets shutdown durng teardown.
self.child = child
# Substitute 'Help!' for 'help' using the 'commands regex' mechanism.
child.expect_exact(prompt)
child.sendline("command regex 'Help__'")
child.expect_exact(regex_prompt)
child.sendline('s/^$/help/')
child.expect_exact(regex_prompt1)
child.sendline('')
child.expect_exact(prompt)
# Help!
child.sendline('Help__')
# If we see the familiar 'help' output, the test is done.
child.expect('Debugger commands:')
# Try and incorrectly remove "Help__" using "command unalias" and verify we fail
child.sendline('command unalias Help__')
child.expect_exact("error: 'Help__' is not an alias, it is a debugger command which can be removed using the 'command delete' command")
child.expect_exact(prompt)
# Delete the regex command using "command delete"
child.sendline('command delete Help__')
child.expect_exact(prompt)
# Verify the command was removed
child.sendline('Help__')
child.expect_exact("error: 'Help__' is not a valid command")
child.expect_exact(prompt)
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