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Diffstat (limited to 'third_party/git/t/t5320-delta-islands.sh')
| -rwxr-xr-x | third_party/git/t/t5320-delta-islands.sh | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/third_party/git/t/t5320-delta-islands.sh b/third_party/git/t/t5320-delta-islands.sh deleted file mode 100755 index fea92a5777..0000000000 --- a/third_party/git/t/t5320-delta-islands.sh +++ /dev/null @@ -1,143 +0,0 @@ -#!/bin/sh - -test_description='exercise delta islands' -. ./test-lib.sh - -# returns true iff $1 is a delta based on $2 -is_delta_base () { - delta_base=$(echo "$1" | git cat-file --batch-check='%(deltabase)') && - echo >&2 "$1 has base $delta_base" && - test "$delta_base" = "$2" -} - -# generate a commit on branch $1 with a single file, "file", whose -# content is mostly based on the seed $2, but with a unique bit -# of content $3 appended. This should allow us to see whether -# blobs of different refs delta against each other. -commit() { - blob=$({ test-tool genrandom "$2" 10240 && echo "$3"; } | - git hash-object -w --stdin) && - tree=$(printf '100644 blob %s\tfile\n' "$blob" | git mktree) && - commit=$(echo "$2-$3" | git commit-tree "$tree" ${4:+-p "$4"}) && - git update-ref "refs/heads/$1" "$commit" && - eval "$1"'=$(git rev-parse $1:file)' && - eval "echo >&2 $1=\$$1" -} - -test_expect_success 'setup commits' ' - commit one seed 1 && - commit two seed 12 -' - -# Note: This is heavily dependent on the "prefer larger objects as base" -# heuristic. -test_expect_success 'vanilla repack deltas one against two' ' - git repack -adf && - is_delta_base $one $two -' - -test_expect_success 'island repack with no island definition is vanilla' ' - git repack -adfi && - is_delta_base $one $two -' - -test_expect_success 'island repack with no matches is vanilla' ' - git -c "pack.island=refs/foo" repack -adfi && - is_delta_base $one $two -' - -test_expect_success 'separate islands disallows delta' ' - git -c "pack.island=refs/heads/(.*)" repack -adfi && - ! is_delta_base $one $two && - ! is_delta_base $two $one -' - -test_expect_success 'same island allows delta' ' - git -c "pack.island=refs/heads" repack -adfi && - is_delta_base $one $two -' - -test_expect_success 'coalesce same-named islands' ' - git \ - -c "pack.island=refs/(.*)/one" \ - -c "pack.island=refs/(.*)/two" \ - repack -adfi && - is_delta_base $one $two -' - -test_expect_success 'island restrictions drop reused deltas' ' - git repack -adfi && - is_delta_base $one $two && - git -c "pack.island=refs/heads/(.*)" repack -adi && - ! is_delta_base $one $two && - ! is_delta_base $two $one -' - -test_expect_success 'island regexes are left-anchored' ' - git -c "pack.island=heads/(.*)" repack -adfi && - is_delta_base $one $two -' - -test_expect_success 'island regexes follow last-one-wins scheme' ' - git \ - -c "pack.island=refs/heads/(.*)" \ - -c "pack.island=refs/heads/" \ - repack -adfi && - is_delta_base $one $two -' - -test_expect_success 'setup shared history' ' - commit root shared root && - commit one shared 1 root && - commit two shared 12-long root -' - -# We know that $two will be preferred as a base from $one, -# because we can transform it with a pure deletion. -# -# We also expect $root as a delta against $two by the "longest is base" rule. -test_expect_success 'vanilla delta goes between branches' ' - git repack -adf && - is_delta_base $one $two && - is_delta_base $root $two -' - -# Here we should allow $one to base itself on $root; even though -# they are in different islands, the objects in $root are in a superset -# of islands compared to those in $one. -# -# Similarly, $two can delta against $root by our rules. And unlike $one, -# in which we are just allowing it, the island rules actually put $root -# as a possible base for $two, which it would not otherwise be (due to the size -# sorting). -test_expect_success 'deltas allowed against superset islands' ' - git -c "pack.island=refs/heads/(.*)" repack -adfi && - is_delta_base $one $root && - is_delta_base $two $root -' - -# We are going to test the packfile order here, so we again have to make some -# assumptions. We assume that "$root", as part of our core "one", must come -# before "$two". This should be guaranteed by the island code. However, for -# this test to fail without islands, we are also assuming that it would not -# otherwise do so. This is true by the current write order, which will put -# commits (and their contents) before their parents. -test_expect_success 'island core places core objects first' ' - cat >expect <<-EOF && - $root - $two - EOF - git -c "pack.island=refs/heads/(.*)" \ - -c "pack.islandcore=one" \ - repack -adfi && - git verify-pack -v .git/objects/pack/*.pack | - cut -d" " -f1 | - egrep "$root|$two" >actual && - test_cmp expect actual -' - -test_expect_success 'unmatched island core is not fatal' ' - git -c "pack.islandcore=one" repack -adfi -' - -test_done |