A Restore logs restored <old> <new> for each pane

A script holding serials from before a Restore could not find its panes: the
replacement numbers them afresh. The dump now keeps each pane's serial (0 in
older dumps), and the replacement's log says `restored <old> <new>` for each
after its `restore <path>`.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

1 files changed, 4 insertions, 1 deletions

diff --git a/test/fs.py b/test/fs.py
index 62e78655..67edf01e 100644
--- a/test/fs.py
+++ b/test/fs.py
@@ -662,7 +662,10 @@ def test(binary, quic=False):
                     raise AssertionError('Restore left an old body fid usable')
                 with Client(address) as restored:
                     # The new log names its panes, then where they came from.
-                    assert restored.read('/log').endswith(b'\nrestore ' + str(saved).encode() + b'\n'), restored.read('/log')
+                    log = restored.read('/log')
+                    assert b'\nrestore ' + str(saved).encode() + b'\n' in log, log
+                    # then which serial each pane had: restored <old> <new>
+                    assert log.endswith(b'\n'.join(b'restored %d %d' % (old, new) for old, new in zip(sorted(old_ids), sorted(int(r.split()[0]) for r in restored.read('/index').splitlines()))) + b'\n'), log
                     restored_ids = [int(row.split()[0]) for row in restored.read('/index').splitlines()]
                     assert len(restored_ids) == 2 and old_ids.isdisjoint(restored_ids), restored_ids
                     file_id, control_id = restored_ids