test_pdb_interaction with py34-pexpect is flaky

[The-Compiler]

I think I've seen this failure on Travis a few times now:

=================================== FAILURES ===================================
_________________________ TestPDB.test_pdb_interaction _________________________

self = <test_pdb.TestPDB object at 0x7fe5cd3180f0>
testdir = <Testdir local('/tmp/pytest-of-travis/pytest-0/testdir/test_pdb_interaction0')>

    def test_pdb_interaction(self, testdir):
        p1 = testdir.makepyfile("""
                def test_1():
                    i = 0
                    assert i == 1
            """)
        child = testdir.spawn_pytest("--pdb %s" % p1)
        child.expect(".*def test_1")
        child.expect(".*i = 0")
>       child.expect("(Pdb)")

/home/travis/build/pytest-dev/pytest/testing/test_pdb.py:70: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
/home/travis/build/pytest-dev/pytest/.tox/py34-pexpect/lib/python3.4/site-packages/pexpect/__init__.py:1451: in expect
    timeout, searchwindowsize)
/home/travis/build/pytest-dev/pytest/.tox/py34-pexpect/lib/python3.4/site-packages/pexpect/__init__.py:1466: in expect_list
    timeout, searchwindowsize)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <pexpect.spawn object at 0x7fe5cd318a90>
searcher = <pexpect.searcher_re object at 0x7fe5cd9be240>, timeout = 10.0
searchwindowsize = None

    def expect_loop(self, searcher, timeout=-1, searchwindowsize=-1):

        [...]
>               raise TIMEOUT(str(err) + '\n' + str(self))
E               pexpect.TIMEOUT: Timeout exceeded.
E               <pexpect.spawn object at 0x7fe5cd318a90>
E               version: 3.3
E               command: /home/travis/build/pytest-dev/pytest/.tox/py34-pexpect/bin/python3.4
E               args: ['/home/travis/build/pytest-dev/pytest/.tox/py34-pexpect/bin/python3.4', '/home/travis/build/pytest-dev/pytest/.tox/py34-pexpect/lib/python3.4/site-packages/pytest.py', '--basetemp=/tmp/pytest-of-travis/pytest-0/testdir/test_pdb_interaction0/pexpect', '--pdb', '/tmp/pytest-of-travis/pytest-0/testdir/test_pdb_interaction0/test_pdb_interaction.py']
E               searcher: <pexpect.searcher_re object at 0x7fe5cd9be240>
E               buffer (last 100 chars): b': AssertionError\r\n>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entering PDB >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\r\n'
E               before (last 100 chars): b': AssertionError\r\n>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> entering PDB >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>\r\n'
E               after: <class 'pexpect.TIMEOUT'>
E               match: None
E               match_index: None
E               exitstatus: None
E               flag_eof: False
E               pid: 1852
E               child_fd: 11
E               closed: False
E               timeout: 10.0
E               delimiter: <class 'pexpect.EOF'>
E               logfile: <_io.BufferedWriter name='/tmp/pytest-of-travis/pytest-0/testdir/test_pdb_interaction0/spawn.out'>
E               logfile_read: None
E               logfile_send: None
E               maxread: 2000
E               ignorecase: False
E               searchwindowsize: None
E               delaybeforesend: 0.05
E               delayafterclose: 0.1
E               delayafterterminate: 0.1

/home/travis/build/pytest-dev/pytest/.tox/py34-pexpect/lib/python3.4/site-packages/pexpect/__init__.py:1568: TIMEOUT

Rebuilding makes it go away - so maybe the timeout just has to be bigger?

[RonnyPfannschmidt]

the travis systems generally run at a lower speed, i'd say double the timeout, see if it can happen again

[nicoddemus]

Could you open a PR with that change @The-Compiler? 😄