Terry J. Reedy added the comment:
Three years later, I do understand 'circular'. Such cut-and-paste whitebox
tests tend to simultaneously test too much -- the particular implementation(1)
-- and too little -- the actual specification(2).
(1) The test would falsely fail if a string were reordered but still correct.
(2) The test would falsely pass is any of the existing strings were incorrect.
Most of the strings have a specification other than the existing string and all
can be tested in an order free manner. Hexdigits example:
import string
assert len(set(string.hexdigits)) == 22
for c in string.hexdigits:
assert '0' <= c <= '9' or 'a' <= c <= 'f' or 'A' <= c <= 'F'
I would be willing to push such a patch. I would also be willing to close this
now.
----------
keywords: +easy
stage: -> needs patch
type: behavior -> enhancement
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<http://bugs.python.org/issue11754>
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