We really just need to check that the row exists here, the date doesn't
matter. Checking the date here is actually flaky with regards to time.
When running locally at 11:50 EST, it failed with:
```
assert self._model.data(self._model.index(row, col)) == item
AssertionError: assert '1969-12-31' == '1970-01-01'
- 1969-12-31
+ 1970-01-01
```
It was wrong to assume that an atime of 0 would always format to
1970-01-01.
I previously removed the sorting logic from SortFilter thinking it was
unnecessary if we construct the model with a sorted list. However, this
only worked when no pattern was set, and the items are misordered as
soon as a pattern is input.
This patch reintroduces alpha-sorting, which can be disabled by passing
sort=False to the ListCategory constructor. The session completion test
had to be tweaked as it simulated the incorrect assumption that the
session list is not alpha-ordered; sessions come out of the
session-manager pre-sorted so we may as well use alpha-sorting in the
session completion model.
Resolves#3156.
The test needed to be fixed because of how the completer behaviour
changed.
Before:
completer always scheduled a completion update on selection changed,
but the updates themselves were ignored if not needed.
Now:
completer only schedules completion updates when actually needed, but
never ignores a completion update.
So, before it was correct to check whether `set_model` was called, now
we must check if the completion was actually scheduled. This can be
done by checking the parameters with which `_change_completed_part`
is called, since a completion is scheduled only when `immediate=True`
With an older PyQt built against a newer Qt, we still don't have its features
available.
This also drops support for exact=True with compiled=True as the semantics for
that are unclear, and it's not used.
