git/t/t4067-diff-partial-clone.sh
Junio C Hamano c205923649 tests: do not negate test_path_exists
As a way to assert the path 'foo' is missing, "! test_path_exists
foo" is a poor way to do so, as the helper is designed to complain
when 'foo' is missing, but the intention of the author who used
negated form was to make sure it does not exist.  This does not
help debugging the tests.

Use test_path_is_missing instead, which is a more appropriate helper.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-05-16 09:13:55 -07:00

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#!/bin/sh
test_description='behavior of diff when reading objects in a partial clone'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
test_expect_success 'git show batches blobs' '
test_when_finished "rm -rf server client trace" &&
test_create_repo server &&
echo a >server/a &&
echo b >server/b &&
git -C server add a b &&
git -C server commit -m x &&
test_config -C server uploadpack.allowfilter 1 &&
test_config -C server uploadpack.allowanysha1inwant 1 &&
git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
# Ensure that there is exactly 1 negotiation by checking that there is
# only 1 "done" line sent. ("done" marks the end of negotiation.)
GIT_TRACE_PACKET="$(pwd)/trace" git -C client show HEAD &&
grep "fetch> done" trace >done_lines &&
test_line_count = 1 done_lines
'
test_expect_success 'diff batches blobs' '
test_when_finished "rm -rf server client trace" &&
test_create_repo server &&
echo a >server/a &&
echo b >server/b &&
git -C server add a b &&
git -C server commit -m x &&
echo c >server/c &&
echo d >server/d &&
git -C server add c d &&
git -C server commit -m x &&
test_config -C server uploadpack.allowfilter 1 &&
test_config -C server uploadpack.allowanysha1inwant 1 &&
git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
# Ensure that there is exactly 1 negotiation by checking that there is
# only 1 "done" line sent. ("done" marks the end of negotiation.)
GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
grep "fetch> done" trace >done_lines &&
test_line_count = 1 done_lines
'
test_expect_success 'diff skips same-OID blobs' '
test_when_finished "rm -rf server client trace" &&
test_create_repo server &&
echo a >server/a &&
echo b >server/b &&
git -C server add a b &&
git -C server commit -m x &&
echo another-a >server/a &&
git -C server add a &&
git -C server commit -m x &&
test_config -C server uploadpack.allowfilter 1 &&
test_config -C server uploadpack.allowanysha1inwant 1 &&
git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
echo a | git hash-object --stdin >hash-old-a &&
echo another-a | git hash-object --stdin >hash-new-a &&
echo b | git hash-object --stdin >hash-b &&
# Ensure that only a and another-a are fetched.
GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
grep "want $(cat hash-old-a)" trace &&
grep "want $(cat hash-new-a)" trace &&
! grep "want $(cat hash-b)" trace
'
test_expect_success 'when fetching missing objects, diff skips GITLINKs' '
test_when_finished "rm -rf sub server client trace" &&
test_config_global protocol.file.allow always &&
test_create_repo sub &&
test_commit -C sub first &&
test_create_repo server &&
echo a >server/a &&
git -C server add a &&
git -C server submodule add "file://$(pwd)/sub" &&
git -C server commit -m x &&
test_commit -C server/sub second &&
echo another-a >server/a &&
git -C server add a sub &&
git -C server commit -m x &&
test_config -C server uploadpack.allowfilter 1 &&
test_config -C server uploadpack.allowanysha1inwant 1 &&
git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
echo a | git hash-object --stdin >hash-old-a &&
echo another-a | git hash-object --stdin >hash-new-a &&
# Ensure that a and another-a are fetched, and check (by successful
# execution of the diff) that no invalid OIDs are sent.
GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff HEAD^ HEAD &&
grep "want $(cat hash-old-a)" trace &&
grep "want $(cat hash-new-a)" trace
'
test_expect_success 'diff with rename detection batches blobs' '
test_when_finished "rm -rf server client trace" &&
test_create_repo server &&
echo a >server/a &&
printf "b\nb\nb\nb\nb\n" >server/b &&
git -C server add a b &&
git -C server commit -m x &&
rm server/b &&
printf "b\nb\nb\nb\nbX\n" >server/c &&
git -C server add c &&
git -C server commit -a -m x &&
test_config -C server uploadpack.allowfilter 1 &&
test_config -C server uploadpack.allowanysha1inwant 1 &&
git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
# Ensure that there is exactly 1 negotiation by checking that there is
# only 1 "done" line sent. ("done" marks the end of negotiation.)
GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD >out &&
grep ":100644 100644.*R[0-9][0-9][0-9].*b.*c" out &&
grep "fetch> done" trace >done_lines &&
test_line_count = 1 done_lines
'
test_expect_success 'diff does not fetch anything if inexact rename detection is not needed' '
test_when_finished "rm -rf server client trace" &&
test_create_repo server &&
echo a >server/a &&
printf "b\nb\nb\nb\nb\n" >server/b &&
git -C server add a b &&
git -C server commit -m x &&
mv server/b server/c &&
git -C server add c &&
git -C server commit -a -m x &&
test_config -C server uploadpack.allowfilter 1 &&
test_config -C server uploadpack.allowanysha1inwant 1 &&
git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
# Ensure no fetches.
GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD &&
test_path_is_missing trace
'
test_expect_success 'diff --break-rewrites fetches only if necessary, and batches blobs if it does' '
test_when_finished "rm -rf server client trace" &&
test_create_repo server &&
echo a >server/a &&
printf "b\nb\nb\nb\nb\n" >server/b &&
git -C server add a b &&
git -C server commit -m x &&
printf "c\nc\nc\nc\nc\n" >server/b &&
git -C server commit -a -m x &&
test_config -C server uploadpack.allowfilter 1 &&
test_config -C server uploadpack.allowanysha1inwant 1 &&
git clone --bare --filter=blob:limit=0 "file://$(pwd)/server" client &&
# Ensure no fetches.
GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --raw -M HEAD^ HEAD &&
test_path_is_missing trace &&
# But with --break-rewrites, ensure that there is exactly 1 negotiation
# by checking that there is only 1 "done" line sent. ("done" marks the
# end of negotiation.)
GIT_TRACE_PACKET="$(pwd)/trace" git -C client diff --break-rewrites --raw -M HEAD^ HEAD &&
grep "fetch> done" trace >done_lines &&
test_line_count = 1 done_lines
'
test_done