[issue29887] test_normalization doesn't work

[STINNER Victor]

STINNER Victor added the comment:

Oh, Zachary reported me the following failure which is legitimate. The code doesn't handle correctly read-only library directory.

The test should try to write the file in a temporary file, or simply skip the test.

http://buildbot.python.org/all/builders/x86%20Gentoo%20Installed%20with%20X%203.x/builds/500/steps/test/logs/stdio

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FAIL: test_main (test.test_normalization.NormalizationTest)
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Traceback (most recent call last):
  File "/buildbot/buildarea/3.x.ware-gentoo-x86.installed/build/target/lib/python3.7/test/test_normalization.py", line 42, in test_main
    check=check_version)
PermissionError: [Errno 13] Permission denied: '/buildbot/buildarea/3.x.ware-gentoo-x86.installed/build/target/lib/python3.7/test/data/NormalizationTest.txt'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/buildbot/buildarea/3.x.ware-gentoo-x86.installed/build/target/lib/python3.7/test/test_normalization.py", line 44, in test_main
    self.fail(f"Could not retrieve {TESTDATAURL}")
AssertionError: Could not retrieve http://www.pythontest.net/unicode/9.0.0/NormalizationTest.txt

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Ran 2 tests in 0.149s

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<http://bugs.python.org/issue29887>
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