This is the same kind of issue as reported in #28684.


python -m test -v test_asyncio -m test_create_datagram_endpoint_existing_sock_unix
== CPython 3.9.0a0 (heads/abifa-dirty:cf805c25e6, Nov 18 2019, 16:40:26) [Clang 8.0.2 (https://andro
id.googlesource.com/toolchain/clang 40173bab62ec7462
== Linux-3.10.0+-x86_64-with-libc little-endian
== cwd: /data/local/tmp/python/tmp/test_python_6046
== CPU count: 2
== encodings: locale=UTF-8, FS=utf-8
0:00:00 Run tests sequentially
test_create_datagram_endpoint_existing_sock_unix (test.test_asyncio.test_base_events.BaseEventLoopWithSelectorTests) ... ERROR
/data/local/tmp/python/lib/python3.9/unittest/case.py:687: ResourceWarning: unclosed <socket.socket
fd=7, family=AddressFamily.AF_UNIX, type=SocketKind.SOCK_DGRAM, proto=0>
  outcome.errors.clear()
ResourceWarning: Enable tracemalloc to get the object allocation traceback
======================================================================
ERROR: test_create_datagram_endpoint_existing_sock_unix (test.test_asyncio.test_base_events.BaseEven
tLoopWithSelectorTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/data/local/tmp/python/lib/python3.9/test/test_asyncio/test_base_events.py", line 1707, in t
est_create_datagram_endpoint_existing_sock_unix
    sock.bind(path)
PermissionError: [Errno 13] Permission denied

----------------------------------------------------------------------

Ran 1 test in 0.014s

FAILED (errors=1)
test test_asyncio failed
test_asyncio failed

== Tests result: FAILURE ==

1 test failed:
    test_asyncio

Total duration: 542 ms
Tests result: FAILURE

Do I understand you correctly: is Android forbids UDP Unix sockets for non-root user?
Maybe the socket path should point on another location to get the test passed?

No, it is the SELinux configuration on android devices that forbids binds to named UNIX sockets. Changing from a named UNIX socket to an unnamed UNIX socket would fix the problem. I don't know if all platforms support unnamed UNIX sockets.

The fix in issue #28684 (referenced in the OP) provides a new decorator to skip the test for platforms such as android.

Please feel free to make a PR for applying @skip_unless_bind_unix_socket decorator.

New changeset 559bad1a70ed50cc9caa7cb303b6ac1fe6a34af3 by Miss Islington (bot) (xdegaye) in branch 'master':
bpo-38841: Skip asyncio test_create_datagram_endpoint_existing_sock_unix (GH-17294)
https://github.com/python/cpython/commit/559bad1a70ed50cc9caa7cb303b6ac1fe6a34af3

New changeset b762375ba28893be73f166576aecde44ad2f4001 by Miss Islington (bot) in branch '3.8':
bpo-38841: Skip asyncio test_create_datagram_endpoint_existing_sock_unix (GH-17294)
https://github.com/python/cpython/commit/b762375ba28893be73f166576aecde44ad2f4001