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| author |  Marc Strapetz <marc.strapetz@syntevo.com> | 2022-01-07 11:17:28 +0000 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2022-01-07 12:37:30 -0800 |
| commit | ab6245bdeed46e1ff3bd378690066abd2ed0f2ef (patch) | |
| tree | eff4125a81937777d716db8dc841d22d87ba3bb8 | |
| parent | The sixth batch (diff) | |
| download | tgif-ab6245bdeed46e1ff3bd378690066abd2ed0f2ef.tar.xz | |
test-lib: introduce API for verifying file mtime
Add functions `test_set_magic_mtime` and `test_is_magic_mtime` which can
be used to (re)set the mtime of a file to a predefined ("magic")
timestamp, then perform some operations and finally check for mtime
changes of the file.
The core implementation follows the suggestion from the
mailing list [1].
[1] https://lore.kernel.org/git/xmqqczl5hpaq.fsf@gitster.g/T/#u
Signed-off-by: Marc Strapetz <marc.strapetz@syntevo.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | t/test-lib-functions.sh | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh index 389153e591..c1afa0884b 100644 --- a/t/test-lib-functions.sh +++ b/t/test-lib-functions.sh @@ -1806,3 +1806,36 @@ test_region () { test_readlink () { perl -le 'print readlink($_) for @ARGV' "$@" } + +# Set mtime to a fixed "magic" timestamp in mid February 2009, before we +# run an operation that may or may not touch the file. If the file was +# touched, its timestamp will not accidentally have such an old timestamp, +# as long as your filesystem clock is reasonably correct. To verify the +# timestamp, follow up with test_is_magic_mtime. +# +# An optional increment to the magic timestamp may be specified as second +# argument. +test_set_magic_mtime () { + local inc=${2:-0} && + local mtime=$((1234567890 + $inc)) && + test-tool chmtime =$mtime "$1" && + test_is_magic_mtime "$1" $inc +} + +# Test whether the given file has the "magic" mtime set. This is meant to +# be used in combination with test_set_magic_mtime. +# +# An optional increment to the magic timestamp may be specified as second +# argument. Usually, this should be the same increment which was used for +# the associated test_set_magic_mtime. +test_is_magic_mtime () { + local inc=${2:-0} && + local mtime=$((1234567890 + $inc)) && + echo $mtime >.git/test-mtime-expect && + test-tool chmtime --get "$1" >.git/test-mtime-actual && + test_cmp .git/test-mtime-expect .git/test-mtime-actual + local ret=$? + rm -f .git/test-mtime-expect + rm -f .git/test-mtime-actual + return $ret +} |