Hide GAP finiteness warnings during isomorphism check #38956
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…ecks
GAP emits an "InfoWarning" message when it is checking for isomorphism
between two groups that are not known to be finite. This message is
only shown once, however, because after it checks for finiteness, it
knows. We have to keep this in mind during tests. For example,
File "src/sage/groups/finitely_presented_named.py", line 485, in
sage.groups.finitely_presented_named.AlternatingPresentation
Failed example:
A1.is_isomorphic(A2), A1.order()
Expected:
(True, 1)
Got:
#I Forcing finiteness test
(True, 1)
These warnings are "normal" and there's nothing for the user to do.
This commit hides them for the duration of the isomorphism check.
Fixes sagemath#38889
The warning "#I Forcing finiteness test" should no longer be emitted when checking for group isomorphism, so we remove it from the expected output in a few places. Fixes sagemath#38889
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To fix #38889 and others like it, we hide the
"#I Forcing finiteness testwarning that can be printed by GAP if one of the groups is not (yet) known to be finite.