From 3b0c52b9ef364dc8e69208ec5341255ac94d41d8 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Sat, 26 May 2018 03:44:38 -0700
Subject: PipeReaderTestCase: cover sockets and named pipes

---
 pym/portage/tests/process/test_poll.py | 74 ++++++++++++++++++++++------------
 1 file changed, 49 insertions(+), 25 deletions(-)

diff --git a/pym/portage/tests/process/test_poll.py b/pym/portage/tests/process/test_poll.py
index 596ea3088..d71c9b59c 100644
--- a/pym/portage/tests/process/test_poll.py
+++ b/pym/portage/tests/process/test_poll.py
@@ -1,11 +1,16 @@
-# Copyright 1998-2013 Gentoo Foundation
+# Copyright 1998-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
+import functools
+import pty
+import shutil
+import socket
+import sys
 import subprocess
+import tempfile
 
 from portage import os
 from portage.tests import TestCase
-from portage.util._pty import _create_pty_or_pipe
 from portage.util._async.PopenProcess import PopenProcess
 from portage.util._eventloop.global_event_loop import global_event_loop
 from _emerge.PipeReader import PipeReader
@@ -13,28 +18,47 @@ from _emerge.PipeReader import PipeReader
 class PipeReaderTestCase(TestCase):
 
 	_use_array = False
-	_use_pty = False
 	_echo_cmd = "echo -n '%s'"
 
-	def _testPipeReader(self, test_string):
+	def test_pipe(self):
+		def make_pipes():
+			return os.pipe(), None
+		self._do_test(make_pipes)
+
+	def test_pty_device(self):
+		def make_pipes():
+			try:
+				return pty.openpty(), None
+			except EnvironmentError:
+				self.skipTest('pty not available')
+		self._do_test(make_pipes)
+
+	def test_domain_socket(self):
+		def make_pipes():
+			if sys.version_info >= (3, 2):
+				read_end, write_end = socket.socketpair()
+				return (read_end.detach(), write_end.detach()), None
+			else:
+				self.skipTest('socket detach not supported')
+		self._do_test(make_pipes)
+
+	def test_named_pipe(self):
+		def make_pipes():
+			tempdir = tempfile.mkdtemp()
+			fifo_path = os.path.join(tempdir, 'fifo')
+			os.mkfifo(fifo_path)
+			return ((os.open(fifo_path, os.O_NONBLOCK|os.O_RDONLY),
+				os.open(fifo_path, os.O_NONBLOCK|os.O_WRONLY)),
+				functools.partial(shutil.rmtree, tempdir))
+		self._do_test(make_pipes)
+
+	def _testPipeReader(self, master_fd, slave_fd, test_string):
 		"""
 		Use a poll loop to read data from a pipe and assert that
 		the data written to the pipe is identical to the data
 		read from the pipe.
 		"""
 
-		if self._use_pty:
-			got_pty, master_fd, slave_fd = _create_pty_or_pipe()
-			if not got_pty:
-				os.close(slave_fd)
-				os.close(master_fd)
-				skip_reason = "pty not acquired"
-				self.portage_skip = skip_reason
-				self.fail(skip_reason)
-				return
-		else:
-			master_fd, slave_fd = os.pipe()
-
 		# WARNING: It is very important to use unbuffered mode here,
 		# in order to avoid issue 5380 with python3.
 		master_file = os.fdopen(master_fd, 'rb', 0)
@@ -60,15 +84,18 @@ class PipeReaderTestCase(TestCase):
 
 		return consumer.getvalue().decode('ascii', 'replace')
 
-	def testPipeReader(self):
+	def _do_test(self, make_pipes):
 		for x in (1, 2, 5, 6, 7, 8, 2**5, 2**10, 2**12, 2**13, 2**14):
 			test_string = x * "a"
-			output = self._testPipeReader(test_string)
-			self.assertEqual(test_string, output,
-				"x = %s, len(output) = %s" % (x, len(output)))
+			(read_end, write_end), cleanup = make_pipes()
+			try:
+				output = self._testPipeReader(read_end, write_end, test_string)
+				self.assertEqual(test_string, output,
+					"x = %s, len(output) = %s" % (x, len(output)))
+			finally:
+				if cleanup is not None:
+					cleanup()
 
-class PipeReaderPtyTestCase(PipeReaderTestCase):
-	_use_pty = True
 
 class PipeReaderArrayTestCase(PipeReaderTestCase):
 
@@ -81,6 +108,3 @@ class PipeReaderArrayTestCase(PipeReaderTestCase):
 		# https://bugs.python.org/issue5380
 		# https://bugs.pypy.org/issue956
 		self.todo = True
-
-class PipeReaderPtyArrayTestCase(PipeReaderArrayTestCase):
-	_use_pty = True
-- 
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