From: Marc Strapetz <marc.strapetz@xxxxxxxxxxx>
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@xxxxxxxxxxx>
---
t/test-lib-functions.sh | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index 389153e5916..01dd8c01f59 100644
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -1806,3 +1806,31 @@ test_region () {
test_readlink () {
perl -le 'print readlink($_) for @ARGV' "$@"
}
+
+# Set a fixed "magic" mtime to the given file,
+# with an optional increment specified as second argument.
+# Use in combination with test_is_magic_mtime.
+test_set_magic_mtime () {
+ # We are using 1234567890 because it's a common timestamp used in
+ # various tests. It represents date 2009-02-13 which should be safe
+ # to use as long as the filetime clock is reasonably accurate.
+ local inc=${2:-0} &&
+ local mtime=$((1234567890 + $inc)) &&
+ test-tool chmtime =$mtime $1 &&
+ test_is_magic_mtime $1 $inc
+}
+
+# Test whether the given file has the "magic" mtime set,
+# with an optional increment specified as second argument.
+# Use in combination with test_set_magic_mtime.
+test_is_magic_mtime () {
+ local inc=${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 .git/test-mtime-expect
+ rm .git/test-mtime-actual
+ return $ret
+}
--
gitgitgadget
