view tests/test-ancestor.py.out @ 29107:c8fbfb9163ce

sslutil: move code examining _canloaddefaultcerts out of _defaultcacerts

Before, the return of _defaultcacerts() was 1 of 3 types. This was
difficult to read. Make it return a path or None.

We had to update hghave.py in the same patch because it was also
looking at this internal function. I wasted dozens of minutes
trying to figure out why tests were failing until I found the
code in hghave.py...

% lazy ancestor set for [], stoprev = 0, inclusive = False
membership: []
iteration:  []
% lazy ancestor set for [11, 13], stoprev = 0, inclusive = False
membership: [7, 8, 3, 4, 1, 0]
iteration:  [3, 7, 8, 1, 4, 0, 2]
% lazy ancestor set for [1, 3], stoprev = 0, inclusive = False
membership: [1, 0]
iteration:  [0, 1]
% lazy ancestor set for [11, 13], stoprev = 0, inclusive = True
membership: [11, 13, 7, 8, 3, 4, 1, 0]
iteration:  [11, 13, 3, 7, 8, 1, 4, 0, 2]
% lazy ancestor set for [11, 13], stoprev = 6, inclusive = False
membership: [7, 8]
iteration:  [7, 8]
% lazy ancestor set for [11, 13], stoprev = 6, inclusive = True
membership: [11, 13, 7, 8]
iteration:  [11, 13, 7, 8]