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bpo-33901: Better test_dbm_gnu.test_reorganize() fix (GH-7795)

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Fix test_dbm_gnu.test_reorganize() on macOS with gdbm 1.15: add a
larger value to make sure that the file size changes.
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Victor Stinner 2018-06-19 17:37:07 +02:00 • committed by GitHub
parent c7f02a9659
commit c44d8e5db6
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2 changed files with 9 additions and 7 deletions
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10
Lib/test/test_dbm_gnu.py
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@ -72,9 +72,13 @@ def test_reorganize(self):
self.g = gdbm.open(filename, 'c')
size0 = os.path.getsize(filename)
self.g['x'] = 'x' * 10000
# bpo-33901: on macOS with gdbm 1.15, an empty database uses 16 MiB
# and adding an entry of 10,000 B has no effect on the file size.
# Add size0 bytes to make sure that the file size changes.
value_size = max(size0, 10000)
self.g['x'] = 'x' * value_size
size1 = os.path.getsize(filename)
self.assertGreaterEqual(size1, size0)
self.assertGreater(size1, size0)
del self.g['x']
# 'size' is supposed to be the same even after deleting an entry.
@ -82,7 +86,7 @@ def test_reorganize(self):
self.g.reorganize()
size2 = os.path.getsize(filename)
self.assertLessEqual(size2, size1)
self.assertLess(size2, size1)
self.assertGreaterEqual(size2, size0)
def test_context_manager(self):

6
Misc/NEWS.d/next/Tests/2018-06-19-14-04-21.bpo-33901.OFW1Sr.rst
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@ -1,4 +1,2 @@
Fix test_dbm_gnu for gdbm 1.15. Using gdbm 1.15, creating a database creates
a file of 16 MiB. Adding a small entry and then modifying the small entry
doesn't change the file size. Modify test_dbm_gnu to be less strict: allow
that the file size doesn't change.
Fix test_dbm_gnu on macOS with gdbm 1.15: add a larger value to make sure that
the file size changes.