Subsequent commits will teach Git another version of changed path
filter that has different behavior with paths that contain at least
one character with its high bit set, so test the existing behavior as
a baseline.
Signed-off-by: Jonathan Tan <jonathantanmy@xxxxxxxxxx>
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
t/t4216-log-bloom.sh | 55 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 55 insertions(+)
diff --git a/t/t4216-log-bloom.sh b/t/t4216-log-bloom.sh
index fa9d32facf..f68df24bd5 100755
--- a/t/t4216-log-bloom.sh
+++ b/t/t4216-log-bloom.sh
@@ -404,4 +404,59 @@ test_expect_success 'Bloom generation backfills empty commits' '
)
'
+get_bdat_offset () {
+ perl -0777 -ne \
+ 'print unpack("N", "$1") if /BDAT\0\0\0\0(....)/ or exit 1' \
+ .git/objects/info/commit-graph
+}
+
+get_first_changed_path_filter () {
+ BDAT_OFFSET=$(get_bdat_offset) &&
+ perl -0777 -ne \
+ 'print unpack("H*", substr($_, '$BDAT_OFFSET' + 12, 2))' \
+ .git/objects/info/commit-graph
+}
+
+# chosen to be the same under all Unicode normalization forms
+CENT=$(printf "\xc2\xa2")
+
+# Some systems (in particular, Linux on the CI running on GitHub at the time of
+# writing) store into CENT a literal backslash, then "x", and so on (instead of
+# the high-bit characters needed). In these systems, do not run the following
+# tests.
+if test "$(printf $CENT | perl -0777 -ne 'no utf8; print ord($_)')" = "194"
+then
+ test_set_prereq HIGH_BIT
+fi
+
+test_expect_success HIGH_BIT 'set up repo with high bit path, version 1 changed-path' '
+ git init highbit1 &&
+ test_commit -C highbit1 c1 "$CENT" &&
+ git -C highbit1 commit-graph write --reachable --changed-paths
+'
+
+test_expect_success HIGH_BIT 'setup check value of version 1 changed-path' '
+ (cd highbit1 &&
+ printf "52a9" >expect &&
+ get_first_changed_path_filter >actual)
+'
+
+# expect will not match actual if int is unsigned by default. Write the test
+# in this way, so that a user running this test script can still see if the two
+# files match. (It will appear as an ordinary success if they match, and a skip
+# if not.)
+if test_cmp highbit1/expect highbit1/actual
+then
+ test_set_prereq SIGNED_INT_BY_DEFAULT
+fi
+test_expect_success SIGNED_INT_BY_DEFAULT 'check value of version 1 changed-path' '
+ # Only the prereq matters for this test.
+ true
+'
+
+test_expect_success HIGH_BIT 'version 1 changed-path used when version 1 requested' '
+ (cd highbit1 &&
+ test_bloom_filters_used "-- $CENT")
+'
+
test_done
--
2.41.0.162.gfafddb0af9-goog
