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Diffstat (limited to 't/t2080-parallel-checkout-basics.sh')
| -rwxr-xr-x | t/t2080-parallel-checkout-basics.sh | 277 |
1 files changed, 277 insertions, 0 deletions
diff --git a/t/t2080-parallel-checkout-basics.sh b/t/t2080-parallel-checkout-basics.sh new file mode 100755 index 0000000..5ffe1a4 --- /dev/null +++ b/t/t2080-parallel-checkout-basics.sh @@ -0,0 +1,277 @@ +#!/bin/sh + +test_description='parallel-checkout basics + +Ensure that parallel-checkout basically works on clone and checkout, spawning +the required number of workers and correctly populating both the index and the +working tree. +' + +TEST_NO_CREATE_REPO=1 +. ./test-lib.sh +. "$TEST_DIRECTORY/lib-parallel-checkout.sh" + +# Test parallel-checkout with a branch switch containing a variety of file +# creations, deletions, and modifications, involving different entry types. +# The branches B1 and B2 have the following paths: +# +# B1 B2 +# a/a (file) a (file) +# b (file) b/b (file) +# +# c/c (file) c (symlink) +# d (symlink) d/d (file) +# +# e/e (file) e (submodule) +# f (submodule) f/f (file) +# +# g (submodule) g (symlink) +# h (symlink) h (submodule) +# +# Additionally, the following paths are present on both branches, but with +# different contents: +# +# i (file) i (file) +# j (symlink) j (symlink) +# k (submodule) k (submodule) +# +# And the following paths are only present in one of the branches: +# +# l/l (file) - +# - m/m (file) +# +test_expect_success 'setup repo for checkout with various types of changes' ' + test_config_global protocol.file.allow always && + + git init sub && + ( + cd sub && + git checkout -b B2 && + echo B2 >file && + git add file && + git commit -m file && + + git checkout -b B1 && + echo B1 >file && + git add file && + git commit -m file + ) && + + git init various && + ( + cd various && + + git checkout -b B1 && + mkdir a c e && + echo a/a >a/a && + echo b >b && + echo c/c >c/c && + test_ln_s_add c d && + echo e/e >e/e && + git submodule add ../sub f && + git submodule add ../sub g && + test_ln_s_add c h && + + echo "B1 i" >i && + test_ln_s_add c j && + git submodule add -b B1 ../sub k && + mkdir l && + echo l/l >l/l && + + git add . && + git commit -m B1 && + + git checkout -b B2 && + git rm -rf :^.gitmodules :^k && + mkdir b d f && + echo a >a && + echo b/b >b/b && + test_ln_s_add b c && + echo d/d >d/d && + git submodule add ../sub e && + echo f/f >f/f && + test_ln_s_add b g && + git submodule add ../sub h && + + echo "B2 i" >i && + test_ln_s_add b j && + git -C k checkout B2 && + mkdir m && + echo m/m >m/m && + + git add . && + git commit -m B2 && + + git checkout --recurse-submodules B1 + ) +' + +for mode in sequential parallel sequential-fallback +do + case $mode in + sequential) workers=1 threshold=0 expected_workers=0 ;; + parallel) workers=2 threshold=0 expected_workers=2 ;; + sequential-fallback) workers=2 threshold=100 expected_workers=0 ;; + esac + + test_expect_success "$mode checkout" ' + repo=various_$mode && + cp -R -P various $repo && + + # The just copied files have more recent timestamps than their + # associated index entries. So refresh the cached timestamps + # to avoid an "entry not up-to-date" error from `git checkout`. + # We only have to do this for the submodules as `git checkout` + # will already refresh the superproject index before performing + # the up-to-date check. + # + git -C $repo submodule foreach "git update-index --refresh" && + + set_checkout_config $workers $threshold && + test_checkout_workers $expected_workers \ + git -C $repo checkout --recurse-submodules B2 && + verify_checkout $repo + ' +done + +for mode in parallel sequential-fallback +do + case $mode in + parallel) workers=2 threshold=0 expected_workers=2 ;; + sequential-fallback) workers=2 threshold=100 expected_workers=0 ;; + esac + + test_expect_success "$mode checkout on clone" ' + test_config_global protocol.file.allow always && + repo=various_${mode}_clone && + set_checkout_config $workers $threshold && + test_checkout_workers $expected_workers \ + git clone --recurse-submodules --branch B2 various $repo && + verify_checkout $repo + ' +done + +# Just to be paranoid, actually compare the working trees' contents directly. +test_expect_success 'compare the working trees' ' + rm -rf various_*/.git && + rm -rf various_*/*/.git && + + # We use `git diff` instead of `diff -r` because the latter would + # follow symlinks, and not all `diff` implementations support the + # `--no-dereference` option. + # + git diff --no-index various_sequential various_parallel && + git diff --no-index various_sequential various_parallel_clone && + git diff --no-index various_sequential various_sequential-fallback && + git diff --no-index various_sequential various_sequential-fallback_clone +' + +# Currently, each submodule is checked out in a separated child process, but +# these subprocesses must also be able to use parallel checkout workers to +# write the submodules' entries. +test_expect_success 'submodules can use parallel checkout' ' + set_checkout_config 2 0 && + git init super && + ( + cd super && + git init sub && + test_commit -C sub A && + test_commit -C sub B && + git submodule add ./sub && + git commit -m sub && + rm sub/* && + test_checkout_workers 2 git checkout --recurse-submodules . + ) +' + +test_expect_success 'parallel checkout respects --[no]-force' ' + set_checkout_config 2 0 && + git init dirty && + ( + cd dirty && + mkdir D && + test_commit D/F && + test_commit F && + + rm -rf D && + echo changed >D && + echo changed >F.t && + + # We expect 0 workers because there is nothing to be done + test_checkout_workers 0 git checkout HEAD && + test_path_is_file D && + grep changed D && + grep changed F.t && + + test_checkout_workers 2 git checkout --force HEAD && + test_path_is_dir D && + grep D/F D/F.t && + grep F F.t + ) +' + +test_expect_success SYMLINKS 'parallel checkout checks for symlinks in leading dirs' ' + set_checkout_config 2 0 && + git init symlinks && + ( + cd symlinks && + mkdir D untracked && + # Commit 2 files to have enough work for 2 parallel workers + test_commit D/A && + test_commit D/B && + rm -rf D && + ln -s untracked D && + + test_checkout_workers 2 git checkout --force HEAD && + ! test -h D && + grep D/A D/A.t && + grep D/B D/B.t + ) +' + +# This test is here (and not in e.g. t2022-checkout-paths.sh), because we +# check the final report including sequential, parallel, and delayed entries +# all at the same time. So we must have finer control of the parallel checkout +# variables. +test_expect_success '"git checkout ." report should not include failed entries' ' + test_config_global filter.delay.process \ + "test-tool rot13-filter --always-delay --log=delayed.log clean smudge delay" && + test_config_global filter.delay.required true && + test_config_global filter.cat.clean cat && + test_config_global filter.cat.smudge cat && + test_config_global filter.cat.required true && + + set_checkout_config 2 0 && + git init failed_entries && + ( + cd failed_entries && + cat >.gitattributes <<-EOF && + *delay* filter=delay + parallel-ineligible* filter=cat + EOF + echo a >missing-delay.a && + echo a >parallel-ineligible.a && + echo a >parallel-eligible.a && + echo b >success-delay.b && + echo b >parallel-ineligible.b && + echo b >parallel-eligible.b && + git add -A && + git commit -m files && + + a_blob="$(git rev-parse :parallel-ineligible.a)" && + rm .git/objects/$(test_oid_to_path $a_blob) && + rm *.a *.b && + + test_checkout_workers 2 test_must_fail git checkout . 2>err && + + # All *.b entries should succeed and all *.a entries should fail: + # - missing-delay.a: the delay filter will drop this path + # - parallel-*.a: the blob will be missing + # + grep "Updated 3 paths from the index" err && + test_stdout_line_count = 3 ls *.b && + ! ls *.a + ) +' + +test_done |