| commit | c6e5607c56a3333681e6f1e5b8879697be8b94cd | [log] [tgz] |
|---|---|---|
| author | SZEDER Gábor <szeder.dev@gmail.com> | Thu Oct 11 11:43:06 2018 +0200 |
| committer | Junio C Hamano <gitster@pobox.com> | Fri Oct 12 07:23:29 2018 +0900 |
| tree | bf3b3b6c9adb0f31f522da7ab1db0673c45d44ca | |
| parent | 74e8addfaa870a125e4f7070abee07a1db53cf0c [diff] |
t1700-split-index: date back files to avoid racy situations 't1700-split-index.sh' checks that the index was split correctly under various circumstances and that all the different ways to turn the split index feature on and off work correctly. To do so, most of its tests use 'test-tool dump-split-index' to see which files have their cache entries in the split index. All these tests assume that all cache entries are written to the shared index (called "base" throughout these tests) when a new shared index is created. This is an implementation detail: most git commands (basically all except 'git update-index') don't care or know at all about split index or whether a cache entry is stored in the split or shared index. As demonstrated in the previous patch, refreshing a split index is prone to a variant of the classic racy git issue. The next patch will fix this issue, but while doing so it will also slightly change this behaviour: only cache entries with mtime in the past will be written only to the newly created shared index, but racily clean cache entries will be written to the new split index (with smudged stat data). While this upcoming change won't at all affect any git commands, it will violate the above mentioned assumption of 't1700's tests. Since these tests create or modify files and create or refresh the split index in rapid succession, there are plenty of racily clean cache entries to be dealt with, which will then be written to the new split indexes, and, ultimately, will cause several tests in 't1700' to fail. Let's prepare 't1700-split-index.sh' for this upcoming change and modify its tests to avoid racily clean files by backdating the mtime of any file modifications (and since a lot of tests create or modify files, encapsulate it into a helper function). Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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