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import re
import pexpect
import sys
import textwrap
try:
from StringIO import StringIO
except ImportError:
from io import StringIO
def expect_exact(context, expected, timeout):
timedout = False
try:
context.cli.expect_exact(expected, timeout=timeout)
except pexpect.TIMEOUT:
timedout = True
if timedout:
# Strip color codes out of the output.
actual = re.sub(r'\x1b\[([0-9A-Za-z;?])+[m|K]?',
'', context.cli.before)
raise Exception(
textwrap.dedent('''\
Expected:
---
{0!r}
---
Actual:
---
{1!r}
---
Full log:
---
{2!r}
---
''').format(
expected,
actual,
context.logfile.getvalue()
)
)
def expect_pager(context, expected, timeout):
expect_exact(context, "{0}\r\n{1}{0}\r\n".format(
context.conf['pager_boundary'], expected), timeout=timeout)
def run_cli(context, run_args=None, exclude_args=None):
"""Run the process using pexpect."""
run_args = run_args or {}
rendered_args = []
exclude_args = set(exclude_args) if exclude_args else set()
conf = dict(**context.conf)
conf.update(run_args)
def add_arg(name, key, value):
if name not in exclude_args:
if value is not None:
rendered_args.extend((key, value))
else:
rendered_args.append(key)
if conf.get('host', None):
add_arg('host', '-h', conf['host'])
if conf.get('user', None):
add_arg('user', '-u', conf['user'])
if conf.get('pass', None):
add_arg('pass', '-p', conf['pass'])
if conf.get('port', None):
add_arg('port', '-P', str(conf['port']))
if conf.get('dbname', None):
add_arg('dbname', '-D', conf['dbname'])
if conf.get('defaults-file', None):
add_arg('defaults_file', '--defaults-file', conf['defaults-file'])
if conf.get('myclirc', None):
add_arg('myclirc', '--myclirc', conf['myclirc'])
if conf.get('login_path'):
add_arg('login_path', '--login-path', conf['login_path'])
for arg_name, arg_value in conf.items():
if arg_name.startswith('-'):
add_arg(arg_name, arg_name, arg_value)
try:
cli_cmd = context.conf['cli_command']
except KeyError:
cli_cmd = (
'{0!s} -c "'
'import coverage ; '
'coverage.process_startup(); '
'import mycli.main; '
'mycli.main.cli()'
'"'
).format(sys.executable)
cmd_parts = [cli_cmd] + rendered_args
cmd = ' '.join(cmd_parts)
context.cli = pexpect.spawnu(cmd, cwd=context.package_root)
context.logfile = StringIO()
context.cli.logfile = context.logfile
context.exit_sent = False
context.currentdb = context.conf['dbname']
def wait_prompt(context, prompt=None):
"""Make sure prompt is displayed."""
if prompt is None:
user = context.conf['user']
host = context.conf['host']
dbname = context.currentdb
prompt = '{0}@{1}:{2}>'.format(
user, host, dbname),
expect_exact(context, prompt, timeout=5)
context.atprompt = True
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