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import platform
import unittest
import re
import os
import sys
import pexpect
from pexpect import replwrap
skip_pypy = "This test fails on PyPy because of REPL differences"
class REPLWrapTestCase(unittest.TestCase):
def setUp(self):
super(REPLWrapTestCase, self).setUp()
self.save_ps1 = os.getenv('PS1', r'\$')
self.save_ps2 = os.getenv('PS2', '>')
os.putenv('PS1', r'\$')
os.putenv('PS2', '>')
def tearDown(self):
super(REPLWrapTestCase, self).tearDown()
os.putenv('PS1', self.save_ps1)
os.putenv('PS2', self.save_ps2)
def test_bash(self):
bash = replwrap.bash()
res = bash.run_command("alias")
assert 'alias' in res, res
try:
bash.run_command('')
except ValueError:
pass
else:
assert False, "Didn't raise ValueError for empty input"
def test_pager_as_cat(self):
" PAGER is set to cat, to prevent timeout in ``man sleep``. "
bash = replwrap.bash()
res = bash.run_command('man sleep', timeout=5)
assert 'SLEEP' in res, res
def test_bash_env(self):
"""env, which displays PS1=..., should not mess up finding the prompt.
"""
bash = replwrap.bash()
res = bash.run_command("export PS1")
res = bash.run_command("env")
self.assertIn('PS1', res)
res = bash.run_command("echo $HOME")
assert res.startswith('/'), res
def test_long_running_multiline(self):
" ensure the default timeout is used for multi-line commands. "
bash = replwrap.bash()
res = bash.run_command("echo begin\r\nsleep 2\r\necho done")
self.assertEqual(res.strip().splitlines(), ['begin', 'done'])
def test_long_running_continuation(self):
" also ensure timeout when used within continuation prompts. "
bash = replwrap.bash()
# The two extra '\\' in the following expression force a continuation
# prompt:
# $ echo begin\
# + ;
# $ sleep 2
# $ echo done
res = bash.run_command("echo begin\\\n;sleep 2\r\necho done")
self.assertEqual(res.strip().splitlines(), ['begin', 'done'])
def test_multiline(self):
bash = replwrap.bash()
res = bash.run_command("echo '1 2\n3 4'")
self.assertEqual(res.strip().splitlines(), ['1 2', '3 4'])
# Should raise ValueError if input is incomplete
try:
bash.run_command("echo '5 6")
except ValueError:
pass
else:
assert False, "Didn't raise ValueError for incomplete input"
# Check that the REPL was reset (SIGINT) after the incomplete input
res = bash.run_command("echo '1 2\n3 4'")
self.assertEqual(res.strip().splitlines(), ['1 2', '3 4'])
def test_existing_spawn(self):
child = pexpect.spawn("bash", timeout=5, encoding='utf-8')
repl = replwrap.REPLWrapper(child, re.compile('[$#]'),
"PS1='{0}' PS2='{1}' "
"PROMPT_COMMAND=''")
res = repl.run_command("echo $HOME")
assert res.startswith('/'), res
def test_python(self):
if platform.python_implementation() == 'PyPy':
raise unittest.SkipTest(skip_pypy)
p = replwrap.python()
res = p.run_command('4+7')
assert res.strip() == '11'
res = p.run_command('for a in range(3): print(a)\n')
assert res.strip().splitlines() == ['0', '1', '2']
def test_no_change_prompt(self):
if platform.python_implementation() == 'PyPy':
raise unittest.SkipTest(skip_pypy)
child = pexpect.spawn(sys.executable, echo=False, timeout=5, encoding='utf-8')
# prompt_change=None should mean no prompt change
py = replwrap.REPLWrapper(child, u">>> ", prompt_change=None,
continuation_prompt=u"... ")
assert py.prompt == ">>> "
res = py.run_command("for a in range(3): print(a)\n")
assert res.strip().splitlines() == ['0', '1', '2']
if __name__ == '__main__':
unittest.main()
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