test_unicodedata: test_normalization() fails randomly with IncompleteRead on PPC64LE Fedora buildbots #99892
Description
For a few weeks, test_unicodedata.test_normalization() fails randomly with IncompleteRead on PPC64LE Fedora buildbots.
IMO the test should be skipped on download error, rather than treating a download error as a test failure.
Example: https://buildbot.python.org/all/#/builders/33/builds/3031
FAIL: test_normalization (test.test_unicodedata.NormalizationTest.test_normalization)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-ppc64le.clang/build/Lib/http/client.py", line 591, in _read_chunked
value.append(self._safe_read(chunk_left))
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-ppc64le.clang/build/Lib/http/client.py", line 632, in _safe_read
raise IncompleteRead(data, amt-len(data))
http.client.IncompleteRead: IncompleteRead(8113 bytes read, 2337 more expected)
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-ppc64le.clang/build/Lib/test/test_unicodedata.py", line 362, in test_normalization
testdata = open_urlresource(TESTDATAURL, encoding="utf-8",
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-ppc64le.clang/build/Lib/test/support/__init__.py", line 671, in open_urlresource
s = f.read()
^^^^^^^^
File "/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-ppc64le.clang/build/Lib/gzip.py", line 295, in read
return self._buffer.read(size)
^^^^^^^^^^^^^^^^^^^^^^^
File "/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-ppc64le.clang/build/Lib/_compression.py", line 118, in readall
while data := self.read(sys.maxsize):
^^^^^^^^^^^^^^^^^^^^^^
File "/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-ppc64le.clang/build/Lib/gzip.py", line 500, in read
buf = self._fp.read(READ_BUFFER_SIZE)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-ppc64le.clang/build/Lib/gzip.py", line 90, in read
return self.file.read(size)
^^^^^^^^^^^^^^^^^^^^
File "/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-ppc64le.clang/build/Lib/http/client.py", line 459, in read
return self._read_chunked(amt)
^^^^^^^^^^^^^^^^^^^^^^^
File "/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-ppc64le.clang/build/Lib/http/client.py", line 597, in _read_chunked
raise IncompleteRead(b''.join(value)) from exc
http.client.IncompleteRead: IncompleteRead(106486 bytes read)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/buildbot/buildarea/3.x.cstratak-fedora-rawhide-ppc64le.clang/build/Lib/test/test_unicodedata.py", line 368, in test_normalization
self.fail(f"Could not retrieve {TESTDATAURL}")
AssertionError: Could not retrieve http://www.pythontest.net/unicode/15.0.0/NormalizationTest.txt