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annotate Lib/test/test_StringIO.py @ 15156:becd8a121464 legacy-trunk

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Jack Jansen reported that the regression test failed on the Mac where string.letters was much more than expected. Solution: explicit is better than implicit; don't rely on string.letters.
author Guido van Rossum <guido@python.org>
date Wed, 11 Oct 2000 21:34:53 +0000
parents 3a04bebb666a
children ab1f90dd502f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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d6ffb6d7fe8a New test cases for the StringIO module
Martin v. Löwis <martin@v.loewis.de>
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1 # Tests StringIO and cStringIO
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2
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3 def do_test(module):
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becd8a121464 Jack Jansen reported that the regression test failed on the Mac where
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4 s = ("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"+'\n')*5
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5 f = module.StringIO(s)
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6 print f.read(10)
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7 print f.readline()
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8 print len(f.readlines(60))
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9
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10 f = module.StringIO()
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11 f.write(s)
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12 f.seek(10)
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13 f.truncate()
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14 print `f.getvalue()`
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15 f.seek(0)
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16 f.truncate(5)
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17 print `f.getvalue()`
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18 f.close()
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19 try:
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20 f.write("frobnitz")
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21 except ValueError, e:
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22 print "Caught expected ValueError writing to closed StringIO:"
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23 print e
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24 else:
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25 print "Failed to catch ValueError writing to closed StringIO."
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26
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27 # Don't bother testing cStringIO without
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28 import StringIO, cStringIO
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29 do_test(StringIO)
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30 do_test(cStringIO)