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"git read-tree" checks the existence of the blobs referenced by the given tree, but does not bulk prefetch them. Add a bulk prefetch. The lack of prefetch here was noticed at $DAYJOB during a merge involving some specific commits, but I couldn't find a minimal merge that didn't also trigger the prefetch in check_updates() in unpack-trees.c (and in all these cases, the lack of prefetch in cache-tree.c didn't matter because all the relevant blobs would have already been prefetched by then). This is why I used read-tree here to exercise this code path. Signed-off-by: Jonathan Tan <jonathantanmy@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
33 lines
935 B
Bash
Executable file
33 lines
935 B
Bash
Executable file
#!/bin/sh
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test_description='git read-tree in partial clones'
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TEST_NO_CREATE_REPO=1
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GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
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export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
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. ./test-lib.sh
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test_expect_success 'read-tree in partial clone prefetches in one batch' '
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test_when_finished "rm -rf server client trace" &&
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git init server &&
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echo foo >server/one &&
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echo bar >server/two &&
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git -C server add one two &&
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git -C server commit -m "initial commit" &&
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TREE=$(git -C server rev-parse HEAD^{tree}) &&
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git -C server config uploadpack.allowfilter 1 &&
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git -C server config uploadpack.allowanysha1inwant 1 &&
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git clone --bare --filter=blob:none "file://$(pwd)/server" client &&
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GIT_TRACE_PACKET="$(pwd)/trace" git -C client read-tree $TREE &&
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# "done" marks the end of negotiation (once per fetch). Expect that
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# only one fetch occurs.
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grep "fetch> done" trace >donelines &&
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test_line_count = 1 donelines
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'
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test_done
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