From 6a273fdc2a36f52fb70359149eff014f1b6b08d4 Mon Sep 17 00:00:00 2001
From: pxinwr <peixing.xin@windriver.com>
Date: Sun, 29 Nov 2020 06:06:36 +0800
Subject: [PATCH] bpo-31904: skip some tests related to fifo on VxWorks
 (GH-23473)

On VxWork RTOS, FIFO must be created under directory "/fifos/". Some test cases related to fifo is invalid on VxWorks. So skip them.
---
 Lib/test/test_pathlib.py                                      | 2 ++
 Lib/test/test_shutil.py                                       | 4 ++++
 .../next/Tests/2020-11-23-11-11-29.bpo-31904.V3sUZk.rst       | 1 +
 3 files changed, 7 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Tests/2020-11-23-11-11-29.bpo-31904.V3sUZk.rst

diff --git a/Lib/test/test_pathlib.py b/Lib/test/test_pathlib.py
index 5e5e065b988..7f7f72c6258 100644
--- a/Lib/test/test_pathlib.py
+++ b/Lib/test/test_pathlib.py
@@ -2219,6 +2219,8 @@ class _BasePathTest(object):
         self.assertIs((P / 'fileA\x00').is_fifo(), False)
 
     @unittest.skipUnless(hasattr(os, "mkfifo"), "os.mkfifo() required")
+    @unittest.skipIf(sys.platform == "vxworks",
+                    "fifo requires special path on VxWorks")
     def test_is_fifo_true(self):
         P = self.cls(BASE, 'myfifo')
         try:
diff --git a/Lib/test/test_shutil.py b/Lib/test/test_shutil.py
index 890f2c7d406..df7fbedf24a 100644
--- a/Lib/test/test_shutil.py
+++ b/Lib/test/test_shutil.py
@@ -683,6 +683,8 @@ class TestCopyTree(BaseTest, unittest.TestCase):
     # Issue #3002: copyfile and copytree block indefinitely on named pipes
     @unittest.skipUnless(hasattr(os, "mkfifo"), 'requires os.mkfifo()')
     @os_helper.skip_unless_symlink
+    @unittest.skipIf(sys.platform == "vxworks",
+                    "fifo requires special path on VxWorks")
     def test_copytree_named_pipe(self):
         os.mkdir(TESTFN)
         try:
@@ -1206,6 +1208,8 @@ class TestCopy(BaseTest, unittest.TestCase):
 
     # Issue #3002: copyfile and copytree block indefinitely on named pipes
     @unittest.skipUnless(hasattr(os, "mkfifo"), 'requires os.mkfifo()')
+    @unittest.skipIf(sys.platform == "vxworks",
+                    "fifo requires special path on VxWorks")
     def test_copyfile_named_pipe(self):
         try:
             os.mkfifo(TESTFN)
diff --git a/Misc/NEWS.d/next/Tests/2020-11-23-11-11-29.bpo-31904.V3sUZk.rst b/Misc/NEWS.d/next/Tests/2020-11-23-11-11-29.bpo-31904.V3sUZk.rst
new file mode 100644
index 00000000000..7202cfa3f3f
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2020-11-23-11-11-29.bpo-31904.V3sUZk.rst
@@ -0,0 +1 @@
+skip some tests related to fifo on VxWorks