2 new tools: display-{fpathconf.maxcanon}.py

tests/test_maxcanon.py has been deleted and turned into
an "autodetection" tool of sorts, no longer attempting
to assert exacting values, but determine it programmatically.

1 files changed, 0 insertions, 179 deletions

diff --git a/tests/test_maxcanon.py b/tests/test_maxcanon.py
deleted file mode 100644
index cd48cbc..0000000
--- a/tests/test_maxcanon.py
+++ /dev/null
@@ -1,179 +0,0 @@
-""" Module for canonical-mode tests. """
-# std imports
-import sys
-import os
-
-# local
-import pexpect
-from . import PexpectTestCase
-
-# 3rd-party
-import pytest
-
-
-class TestCaseCanon(PexpectTestCase.PexpectTestCase):
-    """
-    Test expected Canonical mode behavior (limited input line length).
-
-    All systems use the value of MAX_CANON which can be found using
-    fpathconf(3) value PC_MAX_CANON -- with the exception of Linux
-    and FreeBSD.
-
-    Linux, though defining a value of 255, actually honors the value
-    of 4096 from linux kernel include file tty.h definition
-    N_TTY_BUF_SIZE.
-
-    Linux also does not honor IMAXBEL. termios(3) states, "Linux does not
-    implement this bit, and acts as if it is always set." Although these
-    tests ensure it is enabled, this is a non-op for Linux.
-
-    More unsettling in regards to Linux, Fedora and Debian have different
-    behaviours.  For this reason, **these test has been disabled entirely**.
-
-    FreeBSD supports neither, and instead uses a fraction (1/5) of the tty
-    speed which is always 9600.  Therefor, the maximum limited input line
-    length is 9600 / 5 = 1920.
-
-    These tests only ensure the correctness of the behavior described by
-    the sendline() docstring. pexpect is not particularly involved in
-    these scenarios, though if we wish to expose some kind of interface
-    to tty.setraw, for example, these tests may be re-purposed as such.
-
-    Lastly, portions of these tests are skipped on Travis-CI. It produces
-    unexpected behavior not reproduced on Debian/GNU Linux.
-    """
-
-    def setUp(self):
-        super(TestCaseCanon, self).setUp()
-
-        self.echo = False
-        if sys.platform.lower().startswith('linux'):
-            # linux is 4096, N_TTY_BUF_SIZE.
-            self.max_input = 4096
-            self.echo = True
-        elif sys.platform.lower().startswith('sunos'):
-            # SunOS allows PC_MAX_CANON + 1; see
-            # https://bitbucket.org/illumos/illumos-gate/src/d07a59219ab7fd2a7f39eb47c46cf083c88e932f/usr/src/uts/common/io/ldterm.c?at=default#cl-1888
-            self.max_input = os.fpathconf(0, 'PC_MAX_CANON') + 1
-        elif sys.platform.lower().startswith('freebsd'):
-            # http://lists.freebsd.org/pipermail/freebsd-stable/2009-October/052318.html
-            self.max_input = 9600 / 5
-        else:
-            # All others (probably) limit exactly at PC_MAX_CANON
-            self.max_input = os.fpathconf(0, 'PC_MAX_CANON')
-
-    @pytest.mark.skipif(
-        sys.platform.lower().startswith('freebsd'),
-        reason='os.write to BLOCK indefinitely on FreeBSD in this case'
-    )
-    def disabled_under_max_canon(self):
-        " BEL is not sent by terminal driver at maximum bytes - 1. "
-        # given,
-        child = pexpect.spawn('bash', echo=self.echo, timeout=5)
-        child.sendline('echo READY')
-        child.sendline('stty icanon imaxbel')
-        child.sendline('echo BEGIN; cat')
-
-        # some systems BEL on (maximum - 1), not able to receive CR,
-        # even though all characters up until then were received, they
-        # simply cannot be transmitted, as CR is part of the transmission.
-        send_bytes = self.max_input - 1
-
-        # exercise,
-        child.sendline('_' * send_bytes)
-
-        # fast forward beyond 'cat' command, as ^G can be found as part of
-        # set-xterm-title sequence of $PROMPT_COMMAND or $PS1.
-        child.expect_exact('BEGIN')
-
-        # verify, all input is found in echo output,
-        child.expect_exact('_' * send_bytes)
-
-        # BEL is not found,
-        with self.assertRaises(pexpect.TIMEOUT):
-            child.expect_exact('\a', timeout=1)
-
-        # cleanup,
-        child.sendeof()           # exit cat(1)
-        child.sendline('exit 0')  # exit bash(1)
-        child.expect(pexpect.EOF)
-        assert not child.isalive()
-        assert child.exitstatus == 0
-
-    @pytest.mark.skipif(
-        sys.platform.lower().startswith('freebsd'),
-        reason='os.write to BLOCK indefinitely on FreeBSD in this case'
-    )
-    def disabled_beyond_max_icanon(self):
-        " a single BEL is sent when maximum bytes is reached. "
-        # given,
-        child = pexpect.spawn('bash', echo=self.echo, timeout=5)
-        child.sendline('stty icanon imaxbel erase ^H')
-        child.sendline('cat')
-        send_bytes = self.max_input
-
-        # exercise,
-        child.sendline('_' * send_bytes)
-        child.expect_exact('\a')
-
-        # exercise, we must now backspace to send CR.
-        child.sendcontrol('h')
-        child.sendline()
-
-        if os.environ.get('TRAVIS', None) == 'true':
-            # Travis-CI has intermittent behavior here, possibly
-            # because the master process is itself, a PTY?
-            return
-
-        # verify the length of (maximum - 1) received by cat(1),
-        # which has written it back out,
-        child.expect_exact('_' * (send_bytes - 1))
-        # and not a byte more.
-        with self.assertRaises(pexpect.TIMEOUT):
-            child.expect_exact('_', timeout=1)
-
-        # cleanup,
-        child.sendeof()           # exit cat(1)
-        child.sendline('exit 0')  # exit bash(1)
-        child.expect_exact(pexpect.EOF)
-        assert not child.isalive()
-        assert child.exitstatus == 0
-
-    @pytest.mark.skipif(
-        sys.platform.lower().startswith('freebsd'),
-        reason='os.write to BLOCK indefinitely on FreeBSD in this case'
-    )
-    def disabled_max_no_icanon(self):
-        " may exceed maximum input bytes if canonical mode is disabled. "
-        # given,
-        child = pexpect.spawn('bash', echo=self.echo, timeout=5)
-        child.sendline('stty -icanon imaxbel')
-        child.sendline('echo BEGIN; cat')
-        send_bytes = self.max_input + 11
-
-        # exercise,
-        child.sendline('_' * send_bytes)
-
-        # fast forward beyond 'cat' command, as ^G can be found as part of
-        # set-xterm-title sequence of $PROMPT_COMMAND or $PS1.
-        child.expect_exact('BEGIN')
-
-        if os.environ.get('TRAVIS', None) == 'true':
-            # Travis-CI has intermittent behavior here, possibly
-            # because the master process is itself, a PTY?
-            return
-
-        # BEL is *not* found,
-        with self.assertRaises(pexpect.TIMEOUT):
-            child.expect_exact('\a', timeout=1)
-
-        # verify, all input is found in output,
-        child.expect_exact('_' * send_bytes)
-
-        # cleanup,
-        child.sendcontrol('c')    # exit cat(1) (eof wont work in -icanon)
-        child.sendcontrol('c')
-        child.sendline('exit 0')  # exit bash(1)
-        child.expect(pexpect.EOF)
-        assert not child.isalive()
-        assert child.exitstatus == 0