2022-03-25 18:03:04 +00:00
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#!/bin/sh
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test_description='built-in file system watcher'
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. ./test-lib.sh
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if ! test_have_prereq FSMONITOR_DAEMON
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then
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skip_all="fsmonitor--daemon is not supported on this platform"
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test_done
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fi
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stop_daemon_delete_repo () {
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r=$1 &&
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test_might_fail git -C $r fsmonitor--daemon stop &&
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rm -rf $1
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}
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start_daemon () {
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r= tf= t2= tk= &&
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while test "$#" -ne 0
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do
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case "$1" in
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-C)
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r="-C ${2?}"
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shift
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;;
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--tf)
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tf="${2?}"
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shift
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;;
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--t2)
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t2="${2?}"
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shift
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;;
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--tk)
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tk="${2?}"
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shift
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;;
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-*)
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BUG "error: unknown option: '$1'"
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;;
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*)
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BUG "error: unbound argument: '$1'"
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;;
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esac
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shift
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done &&
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(
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if test -n "$tf"
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then
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GIT_TRACE_FSMONITOR="$tf"
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export GIT_TRACE_FSMONITOR
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fi &&
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if test -n "$t2"
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then
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GIT_TRACE2_PERF="$t2"
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export GIT_TRACE2_PERF
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fi &&
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if test -n "$tk"
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then
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GIT_TEST_FSMONITOR_TOKEN="$tk"
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export GIT_TEST_FSMONITOR_TOKEN
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fi &&
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git $r fsmonitor--daemon start &&
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git $r fsmonitor--daemon status
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)
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}
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# Is a Trace2 data event present with the given catetory and key?
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# We do not care what the value is.
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#
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have_t2_data_event () {
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c=$1 &&
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k=$2 &&
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grep -e '"event":"data".*"category":"'"$c"'".*"key":"'"$k"'"'
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}
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test_expect_success 'explicit daemon start and stop' '
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test_when_finished "stop_daemon_delete_repo test_explicit" &&
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git init test_explicit &&
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start_daemon -C test_explicit &&
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git -C test_explicit fsmonitor--daemon stop &&
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test_must_fail git -C test_explicit fsmonitor--daemon status
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'
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test_expect_success 'implicit daemon start' '
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test_when_finished "stop_daemon_delete_repo test_implicit" &&
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git init test_implicit &&
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test_must_fail git -C test_implicit fsmonitor--daemon status &&
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# query will implicitly start the daemon.
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#
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# for test-script simplicity, we send a V1 timestamp rather than
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# a V2 token. either way, the daemon response to any query contains
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# a new V2 token. (the daemon may complain that we sent a V1 request,
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# but this test case is only concerned with whether the daemon was
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# implicitly started.)
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GIT_TRACE2_EVENT="$PWD/.git/trace" \
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test-tool -C test_implicit fsmonitor-client query --token 0 >actual &&
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nul_to_q <actual >actual.filtered &&
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grep "builtin:" actual.filtered &&
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# confirm that a daemon was started in the background.
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#
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# since the mechanism for starting the background daemon is platform
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# dependent, just confirm that the foreground command received a
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# response from the daemon.
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have_t2_data_event fsm_client query/response-length <.git/trace &&
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git -C test_implicit fsmonitor--daemon status &&
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git -C test_implicit fsmonitor--daemon stop &&
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test_must_fail git -C test_implicit fsmonitor--daemon status
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'
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2022-05-26 21:47:24 +00:00
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# Verify that the daemon has shutdown. Spin a few seconds to
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# make the test a little more robust during CI testing.
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#
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# We're looking for an implicit shutdown, such as when we delete or
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# rename the ".git" directory. Our delete/rename will cause a file
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# system event that the daemon will see and the daemon will
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# auto-shutdown as soon as it sees it. But this is racy with our `git
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# fsmonitor--daemon status` commands (and we cannot use a cookie file
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# here to help us). So spin a little and give the daemon a chance to
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# see the event. (This is primarily for underpowered CI build/test
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# machines (where it might take a moment to wake and reschedule the
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# daemon process) to avoid false alarms during test runs.)
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#
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IMPLICIT_TIMEOUT=5
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verify_implicit_shutdown () {
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r=$1 &&
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k=0 &&
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while test "$k" -lt $IMPLICIT_TIMEOUT
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do
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git -C $r fsmonitor--daemon status || return 0
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sleep 1
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k=$(( $k + 1 ))
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done &&
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return 1
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}
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2022-03-25 18:03:04 +00:00
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test_expect_success 'implicit daemon stop (delete .git)' '
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test_when_finished "stop_daemon_delete_repo test_implicit_1" &&
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git init test_implicit_1 &&
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start_daemon -C test_implicit_1 &&
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# deleting the .git directory will implicitly stop the daemon.
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rm -rf test_implicit_1/.git &&
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# [1] Create an empty .git directory so that the following Git
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# command will stay relative to the `-C` directory.
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#
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# Without this, the Git command will override the requested
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# -C argument and crawl out to the containing Git source tree.
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# This would make the test result dependent upon whether we
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# were using fsmonitor on our development worktree.
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#
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mkdir test_implicit_1/.git &&
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2022-05-26 21:47:24 +00:00
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verify_implicit_shutdown test_implicit_1
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2022-03-25 18:03:04 +00:00
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'
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test_expect_success 'implicit daemon stop (rename .git)' '
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test_when_finished "stop_daemon_delete_repo test_implicit_2" &&
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git init test_implicit_2 &&
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start_daemon -C test_implicit_2 &&
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# renaming the .git directory will implicitly stop the daemon.
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mv test_implicit_2/.git test_implicit_2/.xxx &&
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# See [1] above.
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#
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mkdir test_implicit_2/.git &&
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2022-05-26 21:47:24 +00:00
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verify_implicit_shutdown test_implicit_2
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2022-03-25 18:03:04 +00:00
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'
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2022-05-26 21:46:55 +00:00
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# File systems on Windows may or may not have shortnames.
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# This is a volume-specific setting on modern systems.
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# "C:/" drives are required to have them enabled. Other
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# hard drives default to disabled.
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#
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# This is a crude test to see if shortnames are enabled
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# on the volume containing the test directory. It is
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# crude, but it does not require elevation like `fsutil`.
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#
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test_lazy_prereq SHORTNAMES '
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mkdir .foo &&
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test -d "FOO~1"
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'
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# Here we assume that the shortname of ".git" is "GIT~1".
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test_expect_success MINGW,SHORTNAMES 'implicit daemon stop (rename GIT~1)' '
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test_when_finished "stop_daemon_delete_repo test_implicit_1s" &&
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git init test_implicit_1s &&
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start_daemon -C test_implicit_1s &&
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# renaming the .git directory will implicitly stop the daemon.
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# this moves {.git, GIT~1} to {.gitxyz, GITXYZ~1}.
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# the rename-from FS Event will contain the shortname.
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#
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mv test_implicit_1s/GIT~1 test_implicit_1s/.gitxyz &&
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2022-05-26 21:47:24 +00:00
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# See [1] above.
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2022-05-26 21:46:55 +00:00
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# this moves {.gitxyz, GITXYZ~1} to {.git, GIT~1}.
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mv test_implicit_1s/.gitxyz test_implicit_1s/.git &&
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2022-05-26 21:47:24 +00:00
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verify_implicit_shutdown test_implicit_1s
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2022-05-26 21:46:55 +00:00
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'
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# Here we first create a file with LONGNAME of "GIT~1" before
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# we create the repo. This will cause the shortname of ".git"
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# to be "GIT~2".
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test_expect_success MINGW,SHORTNAMES 'implicit daemon stop (rename GIT~2)' '
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test_when_finished "stop_daemon_delete_repo test_implicit_1s2" &&
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mkdir test_implicit_1s2 &&
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echo HELLO >test_implicit_1s2/GIT~1 &&
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git init test_implicit_1s2 &&
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test_path_is_file test_implicit_1s2/GIT~1 &&
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test_path_is_dir test_implicit_1s2/GIT~2 &&
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start_daemon -C test_implicit_1s2 &&
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# renaming the .git directory will implicitly stop the daemon.
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# the rename-from FS Event will contain the shortname.
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#
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mv test_implicit_1s2/GIT~2 test_implicit_1s2/.gitxyz &&
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2022-05-26 21:47:24 +00:00
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# See [1] above.
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2022-05-26 21:46:55 +00:00
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mv test_implicit_1s2/.gitxyz test_implicit_1s2/.git &&
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2022-05-26 21:47:24 +00:00
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verify_implicit_shutdown test_implicit_1s2
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2022-05-26 21:46:55 +00:00
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'
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2022-03-25 18:03:04 +00:00
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test_expect_success 'cannot start multiple daemons' '
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test_when_finished "stop_daemon_delete_repo test_multiple" &&
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git init test_multiple &&
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start_daemon -C test_multiple &&
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test_must_fail git -C test_multiple fsmonitor--daemon start 2>actual &&
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grep "fsmonitor--daemon is already running" actual &&
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git -C test_multiple fsmonitor--daemon stop &&
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test_must_fail git -C test_multiple fsmonitor--daemon status
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'
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# These tests use the main repo in the trash directory
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test_expect_success 'setup' '
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>tracked &&
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>modified &&
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>delete &&
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>rename &&
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mkdir dir1 &&
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>dir1/tracked &&
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>dir1/modified &&
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>dir1/delete &&
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>dir1/rename &&
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mkdir dir2 &&
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>dir2/tracked &&
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>dir2/modified &&
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>dir2/delete &&
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>dir2/rename &&
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mkdir dirtorename &&
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>dirtorename/a &&
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>dirtorename/b &&
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cat >.gitignore <<-\EOF &&
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.gitignore
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expect*
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actual*
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2022-03-25 18:03:13 +00:00
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flush*
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trace*
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2022-03-25 18:03:04 +00:00
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EOF
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2022-05-26 21:47:15 +00:00
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mkdir -p T1/T2/T3/T4 &&
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echo 1 >T1/F1 &&
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echo 1 >T1/T2/F1 &&
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echo 1 >T1/T2/T3/F1 &&
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echo 1 >T1/T2/T3/T4/F1 &&
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echo 2 >T1/F2 &&
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echo 2 >T1/T2/F2 &&
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echo 2 >T1/T2/T3/F2 &&
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echo 2 >T1/T2/T3/T4/F2 &&
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2022-03-25 18:03:04 +00:00
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git -c core.fsmonitor=false add . &&
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test_tick &&
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git -c core.fsmonitor=false commit -m initial &&
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git config core.fsmonitor true
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'
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# The test already explicitly stopped (or tried to stop) the daemon.
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# This is here in case something else fails first.
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#
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redundant_stop_daemon () {
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test_might_fail git fsmonitor--daemon stop
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}
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test_expect_success 'update-index implicitly starts daemon' '
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test_when_finished redundant_stop_daemon &&
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test_must_fail git fsmonitor--daemon status &&
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GIT_TRACE2_EVENT="$PWD/.git/trace_implicit_1" \
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git update-index --fsmonitor &&
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git fsmonitor--daemon status &&
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test_might_fail git fsmonitor--daemon stop &&
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# Confirm that the trace2 log contains a record of the
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# daemon starting.
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test_subcommand git fsmonitor--daemon start <.git/trace_implicit_1
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'
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test_expect_success 'status implicitly starts daemon' '
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test_when_finished redundant_stop_daemon &&
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test_must_fail git fsmonitor--daemon status &&
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GIT_TRACE2_EVENT="$PWD/.git/trace_implicit_2" \
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git status >actual &&
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git fsmonitor--daemon status &&
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test_might_fail git fsmonitor--daemon stop &&
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# Confirm that the trace2 log contains a record of the
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# daemon starting.
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test_subcommand git fsmonitor--daemon start <.git/trace_implicit_2
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'
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edit_files () {
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echo 1 >modified &&
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echo 2 >dir1/modified &&
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echo 3 >dir2/modified &&
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>dir1/untracked
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}
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delete_files () {
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rm -f delete &&
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rm -f dir1/delete &&
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rm -f dir2/delete
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}
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create_files () {
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echo 1 >new &&
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|
|
|
echo 2 >dir1/new &&
|
|
|
|
echo 3 >dir2/new
|
|
|
|
}
|
|
|
|
|
|
|
|
rename_files () {
|
|
|
|
mv rename renamed &&
|
|
|
|
mv dir1/rename dir1/renamed &&
|
|
|
|
mv dir2/rename dir2/renamed
|
|
|
|
}
|
|
|
|
|
|
|
|
file_to_directory () {
|
|
|
|
rm -f delete &&
|
|
|
|
mkdir delete &&
|
|
|
|
echo 1 >delete/new
|
|
|
|
}
|
|
|
|
|
|
|
|
directory_to_file () {
|
|
|
|
rm -rf dir1 &&
|
|
|
|
echo 1 >dir1
|
|
|
|
}
|
|
|
|
|
2022-05-26 21:47:15 +00:00
|
|
|
move_directory_contents_deeper() {
|
|
|
|
mkdir T1/_new_ &&
|
|
|
|
mv T1/[A-Z]* T1/_new_
|
|
|
|
}
|
|
|
|
|
|
|
|
move_directory_up() {
|
|
|
|
mv T1/T2/T3 T1
|
|
|
|
}
|
|
|
|
|
|
|
|
move_directory() {
|
|
|
|
mv T1/T2/T3 T1/T2/NewT3
|
|
|
|
}
|
|
|
|
|
2022-03-25 18:03:04 +00:00
|
|
|
# The next few test cases confirm that our fsmonitor daemon sees each type
|
|
|
|
# of OS filesystem notification that we care about. At this layer we just
|
|
|
|
# ensure we are getting the OS notifications and do not try to confirm what
|
|
|
|
# is reported by `git status`.
|
|
|
|
#
|
|
|
|
# We run a simple query after modifying the filesystem just to introduce
|
|
|
|
# a bit of a delay so that the trace logging from the daemon has time to
|
|
|
|
# get flushed to disk.
|
|
|
|
#
|
|
|
|
# We `reset` and `clean` at the bottom of each test (and before stopping the
|
|
|
|
# daemon) because these commands might implicitly restart the daemon.
|
|
|
|
|
|
|
|
clean_up_repo_and_stop_daemon () {
|
|
|
|
git reset --hard HEAD &&
|
|
|
|
git clean -fd &&
|
|
|
|
test_might_fail git fsmonitor--daemon stop &&
|
|
|
|
rm -f .git/trace
|
|
|
|
}
|
|
|
|
|
|
|
|
test_expect_success 'edit some files' '
|
|
|
|
test_when_finished clean_up_repo_and_stop_daemon &&
|
|
|
|
|
|
|
|
start_daemon --tf "$PWD/.git/trace" &&
|
|
|
|
|
|
|
|
edit_files &&
|
|
|
|
|
|
|
|
test-tool fsmonitor-client query --token 0 &&
|
|
|
|
|
|
|
|
grep "^event: dir1/modified$" .git/trace &&
|
|
|
|
grep "^event: dir2/modified$" .git/trace &&
|
|
|
|
grep "^event: modified$" .git/trace &&
|
|
|
|
grep "^event: dir1/untracked$" .git/trace
|
|
|
|
'
|
|
|
|
|
|
|
|
test_expect_success 'create some files' '
|
|
|
|
test_when_finished clean_up_repo_and_stop_daemon &&
|
|
|
|
|
|
|
|
start_daemon --tf "$PWD/.git/trace" &&
|
|
|
|
|
|
|
|
create_files &&
|
|
|
|
|
|
|
|
test-tool fsmonitor-client query --token 0 &&
|
|
|
|
|
|
|
|
grep "^event: dir1/new$" .git/trace &&
|
|
|
|
grep "^event: dir2/new$" .git/trace &&
|
|
|
|
grep "^event: new$" .git/trace
|
|
|
|
'
|
|
|
|
|
|
|
|
test_expect_success 'delete some files' '
|
|
|
|
test_when_finished clean_up_repo_and_stop_daemon &&
|
|
|
|
|
|
|
|
start_daemon --tf "$PWD/.git/trace" &&
|
|
|
|
|
|
|
|
delete_files &&
|
|
|
|
|
|
|
|
test-tool fsmonitor-client query --token 0 &&
|
|
|
|
|
|
|
|
grep "^event: dir1/delete$" .git/trace &&
|
|
|
|
grep "^event: dir2/delete$" .git/trace &&
|
|
|
|
grep "^event: delete$" .git/trace
|
|
|
|
'
|
|
|
|
|
|
|
|
test_expect_success 'rename some files' '
|
|
|
|
test_when_finished clean_up_repo_and_stop_daemon &&
|
|
|
|
|
|
|
|
start_daemon --tf "$PWD/.git/trace" &&
|
|
|
|
|
|
|
|
rename_files &&
|
|
|
|
|
|
|
|
test-tool fsmonitor-client query --token 0 &&
|
|
|
|
|
|
|
|
grep "^event: dir1/rename$" .git/trace &&
|
|
|
|
grep "^event: dir2/rename$" .git/trace &&
|
|
|
|
grep "^event: rename$" .git/trace &&
|
|
|
|
grep "^event: dir1/renamed$" .git/trace &&
|
|
|
|
grep "^event: dir2/renamed$" .git/trace &&
|
|
|
|
grep "^event: renamed$" .git/trace
|
|
|
|
'
|
|
|
|
|
|
|
|
test_expect_success 'rename directory' '
|
|
|
|
test_when_finished clean_up_repo_and_stop_daemon &&
|
|
|
|
|
|
|
|
start_daemon --tf "$PWD/.git/trace" &&
|
|
|
|
|
|
|
|
mv dirtorename dirrenamed &&
|
|
|
|
|
|
|
|
test-tool fsmonitor-client query --token 0 &&
|
|
|
|
|
|
|
|
grep "^event: dirtorename/*$" .git/trace &&
|
|
|
|
grep "^event: dirrenamed/*$" .git/trace
|
|
|
|
'
|
|
|
|
|
|
|
|
test_expect_success 'file changes to directory' '
|
|
|
|
test_when_finished clean_up_repo_and_stop_daemon &&
|
|
|
|
|
|
|
|
start_daemon --tf "$PWD/.git/trace" &&
|
|
|
|
|
|
|
|
file_to_directory &&
|
|
|
|
|
|
|
|
test-tool fsmonitor-client query --token 0 &&
|
|
|
|
|
|
|
|
grep "^event: delete$" .git/trace &&
|
|
|
|
grep "^event: delete/new$" .git/trace
|
|
|
|
'
|
|
|
|
|
|
|
|
test_expect_success 'directory changes to a file' '
|
|
|
|
test_when_finished clean_up_repo_and_stop_daemon &&
|
|
|
|
|
|
|
|
start_daemon --tf "$PWD/.git/trace" &&
|
|
|
|
|
|
|
|
directory_to_file &&
|
|
|
|
|
|
|
|
test-tool fsmonitor-client query --token 0 &&
|
|
|
|
|
|
|
|
grep "^event: dir1$" .git/trace
|
|
|
|
'
|
|
|
|
|
|
|
|
# The next few test cases exercise the token-resync code. When filesystem
|
|
|
|
# drops events (because of filesystem velocity or because the daemon isn't
|
|
|
|
# polling fast enough), we need to discard the cached data (relative to the
|
|
|
|
# current token) and start collecting events under a new token.
|
|
|
|
#
|
|
|
|
# the 'test-tool fsmonitor-client flush' command can be used to send a
|
|
|
|
# "flush" message to a running daemon and ask it to do a flush/resync.
|
|
|
|
|
|
|
|
test_expect_success 'flush cached data' '
|
|
|
|
test_when_finished "stop_daemon_delete_repo test_flush" &&
|
|
|
|
|
|
|
|
git init test_flush &&
|
|
|
|
|
|
|
|
start_daemon -C test_flush --tf "$PWD/.git/trace_daemon" --tk true &&
|
|
|
|
|
|
|
|
# The daemon should have an initial token with no events in _0 and
|
|
|
|
# then a few (probably platform-specific number of) events in _1.
|
|
|
|
# These should both have the same <token_id>.
|
|
|
|
|
|
|
|
test-tool -C test_flush fsmonitor-client query --token "builtin:test_00000001:0" >actual_0 &&
|
|
|
|
nul_to_q <actual_0 >actual_q0 &&
|
|
|
|
|
|
|
|
>test_flush/file_1 &&
|
|
|
|
>test_flush/file_2 &&
|
|
|
|
|
|
|
|
test-tool -C test_flush fsmonitor-client query --token "builtin:test_00000001:0" >actual_1 &&
|
|
|
|
nul_to_q <actual_1 >actual_q1 &&
|
|
|
|
|
|
|
|
grep "file_1" actual_q1 &&
|
|
|
|
|
|
|
|
# Force a flush. This will change the <token_id>, reset the <seq_nr>, and
|
|
|
|
# flush the file data. Then create some events and ensure that the file
|
|
|
|
# again appears in the cache. It should have the new <token_id>.
|
|
|
|
|
|
|
|
test-tool -C test_flush fsmonitor-client flush >flush_0 &&
|
|
|
|
nul_to_q <flush_0 >flush_q0 &&
|
|
|
|
grep "^builtin:test_00000002:0Q/Q$" flush_q0 &&
|
|
|
|
|
|
|
|
test-tool -C test_flush fsmonitor-client query --token "builtin:test_00000002:0" >actual_2 &&
|
|
|
|
nul_to_q <actual_2 >actual_q2 &&
|
|
|
|
|
|
|
|
grep "^builtin:test_00000002:0Q$" actual_q2 &&
|
|
|
|
|
|
|
|
>test_flush/file_3 &&
|
|
|
|
|
|
|
|
test-tool -C test_flush fsmonitor-client query --token "builtin:test_00000002:0" >actual_3 &&
|
|
|
|
nul_to_q <actual_3 >actual_q3 &&
|
|
|
|
|
|
|
|
grep "file_3" actual_q3
|
|
|
|
'
|
|
|
|
|
|
|
|
# The next few test cases create repos where the .git directory is NOT
|
|
|
|
# inside the one of the working directory. That is, where .git is a file
|
|
|
|
# that points to a directory elsewhere. This happens for submodules and
|
|
|
|
# non-primary worktrees.
|
|
|
|
|
|
|
|
test_expect_success 'setup worktree base' '
|
|
|
|
git init wt-base &&
|
|
|
|
echo 1 >wt-base/file1 &&
|
|
|
|
git -C wt-base add file1 &&
|
|
|
|
git -C wt-base commit -m "c1"
|
|
|
|
'
|
|
|
|
|
|
|
|
test_expect_success 'worktree with .git file' '
|
|
|
|
git -C wt-base worktree add ../wt-secondary &&
|
|
|
|
|
|
|
|
start_daemon -C wt-secondary \
|
|
|
|
--tf "$PWD/trace_wt_secondary" \
|
|
|
|
--t2 "$PWD/trace2_wt_secondary" &&
|
|
|
|
|
|
|
|
git -C wt-secondary fsmonitor--daemon stop &&
|
|
|
|
test_must_fail git -C wt-secondary fsmonitor--daemon status
|
|
|
|
'
|
|
|
|
|
|
|
|
# NEEDSWORK: Repeat one of the "edit" tests on wt-secondary and
|
|
|
|
# confirm that we get the same events and behavior -- that is, that
|
|
|
|
# fsmonitor--daemon correctly watches BOTH the working directory and
|
|
|
|
# the external GITDIR directory and behaves the same as when ".git"
|
|
|
|
# is a directory inside the working directory.
|
|
|
|
|
|
|
|
test_expect_success 'cleanup worktrees' '
|
|
|
|
stop_daemon_delete_repo wt-secondary &&
|
|
|
|
stop_daemon_delete_repo wt-base
|
|
|
|
'
|
|
|
|
|
2022-03-25 18:03:13 +00:00
|
|
|
# The next few tests perform arbitrary/contrived file operations and
|
|
|
|
# confirm that status is correct. That is, that the data (or lack of
|
|
|
|
# data) from fsmonitor doesn't cause incorrect results. And doesn't
|
|
|
|
# cause incorrect results when the untracked-cache is enabled.
|
|
|
|
|
|
|
|
test_lazy_prereq UNTRACKED_CACHE '
|
|
|
|
git update-index --test-untracked-cache
|
|
|
|
'
|
|
|
|
|
|
|
|
test_expect_success 'Matrix: setup for untracked-cache,fsmonitor matrix' '
|
|
|
|
test_unconfig core.fsmonitor &&
|
|
|
|
git update-index --no-fsmonitor &&
|
|
|
|
test_might_fail git fsmonitor--daemon stop
|
|
|
|
'
|
|
|
|
|
|
|
|
matrix_clean_up_repo () {
|
|
|
|
git reset --hard HEAD &&
|
|
|
|
git clean -fd
|
|
|
|
}
|
|
|
|
|
|
|
|
matrix_try () {
|
|
|
|
uc=$1 &&
|
|
|
|
fsm=$2 &&
|
|
|
|
fn=$3 &&
|
|
|
|
|
|
|
|
if test $uc = true && test $fsm = false
|
|
|
|
then
|
|
|
|
# The untracked-cache is buggy when FSMonitor is
|
|
|
|
# DISABLED, so skip the tests for this matrix
|
|
|
|
# combination.
|
|
|
|
#
|
|
|
|
# We've observed random, occasional test failures on
|
|
|
|
# Windows and MacOS when the UC is turned on and FSM
|
|
|
|
# is turned off. These are rare, but they do happen
|
|
|
|
# indicating that it is probably a race condition within
|
|
|
|
# the untracked cache itself.
|
|
|
|
#
|
|
|
|
# It usually happens when a test does F/D trickery and
|
|
|
|
# then the NEXT test fails because of extra status
|
|
|
|
# output from stale UC data from the previous test.
|
|
|
|
#
|
|
|
|
# Since FSMonitor is not involved in the error, skip
|
|
|
|
# the tests for this matrix combination.
|
|
|
|
#
|
|
|
|
return 0
|
|
|
|
fi &&
|
|
|
|
|
|
|
|
test_expect_success "Matrix[uc:$uc][fsm:$fsm] $fn" '
|
|
|
|
matrix_clean_up_repo &&
|
|
|
|
$fn &&
|
|
|
|
if test $uc = false && test $fsm = false
|
|
|
|
then
|
|
|
|
git status --porcelain=v1 >.git/expect.$fn
|
|
|
|
else
|
|
|
|
git status --porcelain=v1 >.git/actual.$fn &&
|
|
|
|
test_cmp .git/expect.$fn .git/actual.$fn
|
|
|
|
fi
|
|
|
|
'
|
|
|
|
}
|
|
|
|
|
|
|
|
uc_values="false"
|
|
|
|
test_have_prereq UNTRACKED_CACHE && uc_values="false true"
|
|
|
|
for uc_val in $uc_values
|
|
|
|
do
|
|
|
|
if test $uc_val = false
|
|
|
|
then
|
|
|
|
test_expect_success "Matrix[uc:$uc_val] disable untracked cache" '
|
|
|
|
git config core.untrackedcache false &&
|
|
|
|
git update-index --no-untracked-cache
|
|
|
|
'
|
|
|
|
else
|
|
|
|
test_expect_success "Matrix[uc:$uc_val] enable untracked cache" '
|
|
|
|
git config core.untrackedcache true &&
|
|
|
|
git update-index --untracked-cache
|
|
|
|
'
|
|
|
|
fi
|
|
|
|
|
|
|
|
fsm_values="false true"
|
|
|
|
for fsm_val in $fsm_values
|
|
|
|
do
|
|
|
|
if test $fsm_val = false
|
|
|
|
then
|
|
|
|
test_expect_success "Matrix[uc:$uc_val][fsm:$fsm_val] disable fsmonitor" '
|
|
|
|
test_unconfig core.fsmonitor &&
|
|
|
|
git update-index --no-fsmonitor &&
|
|
|
|
test_might_fail git fsmonitor--daemon stop
|
|
|
|
'
|
|
|
|
else
|
|
|
|
test_expect_success "Matrix[uc:$uc_val][fsm:$fsm_val] enable fsmonitor" '
|
|
|
|
git config core.fsmonitor true &&
|
|
|
|
git fsmonitor--daemon start &&
|
|
|
|
git update-index --fsmonitor
|
|
|
|
'
|
|
|
|
fi
|
|
|
|
|
|
|
|
matrix_try $uc_val $fsm_val edit_files
|
|
|
|
matrix_try $uc_val $fsm_val delete_files
|
|
|
|
matrix_try $uc_val $fsm_val create_files
|
|
|
|
matrix_try $uc_val $fsm_val rename_files
|
|
|
|
matrix_try $uc_val $fsm_val file_to_directory
|
|
|
|
matrix_try $uc_val $fsm_val directory_to_file
|
|
|
|
|
2022-05-26 21:47:15 +00:00
|
|
|
matrix_try $uc_val $fsm_val move_directory_contents_deeper
|
|
|
|
matrix_try $uc_val $fsm_val move_directory_up
|
|
|
|
matrix_try $uc_val $fsm_val move_directory
|
|
|
|
|
2022-03-25 18:03:13 +00:00
|
|
|
if test $fsm_val = true
|
|
|
|
then
|
|
|
|
test_expect_success "Matrix[uc:$uc_val][fsm:$fsm_val] disable fsmonitor at end" '
|
|
|
|
test_unconfig core.fsmonitor &&
|
|
|
|
git update-index --no-fsmonitor &&
|
|
|
|
test_might_fail git fsmonitor--daemon stop
|
|
|
|
'
|
|
|
|
fi
|
|
|
|
done
|
|
|
|
done
|
|
|
|
|
2022-05-26 21:46:56 +00:00
|
|
|
# Test Unicode UTF-8 characters in the pathname of the working
|
|
|
|
# directory root. Use of "*A()" routines rather than "*W()" routines
|
|
|
|
# on Windows can sometimes lead to odd failures.
|
|
|
|
#
|
|
|
|
u1=$(printf "u_c3_a6__\xC3\xA6")
|
|
|
|
u2=$(printf "u_e2_99_ab__\xE2\x99\xAB")
|
|
|
|
u_values="$u1 $u2"
|
|
|
|
for u in $u_values
|
|
|
|
do
|
|
|
|
test_expect_success "unicode in repo root path: $u" '
|
|
|
|
test_when_finished "stop_daemon_delete_repo $u" &&
|
|
|
|
|
|
|
|
git init "$u" &&
|
|
|
|
echo 1 >"$u"/file1 &&
|
|
|
|
git -C "$u" add file1 &&
|
|
|
|
git -C "$u" config core.fsmonitor true &&
|
|
|
|
|
|
|
|
start_daemon -C "$u" &&
|
|
|
|
git -C "$u" status >actual &&
|
|
|
|
grep "new file: file1" actual
|
|
|
|
'
|
|
|
|
done
|
|
|
|
|
2022-05-26 21:47:17 +00:00
|
|
|
# Test fsmonitor interaction with submodules.
|
|
|
|
#
|
|
|
|
# If we start the daemon in the super, it will see FS events for
|
|
|
|
# everything in the working directory cone and this includes any
|
|
|
|
# files/directories contained *within* the submodules.
|
|
|
|
#
|
|
|
|
# A `git status` at top level will get events for items within the
|
|
|
|
# submodule and ignore them, since they aren't named in the index
|
|
|
|
# of the super repo. This makes the fsmonitor response a little
|
|
|
|
# noisy, but it doesn't alter the correctness of the state of the
|
|
|
|
# super-proper.
|
|
|
|
#
|
|
|
|
# When we have submodules, `git status` normally does a recursive
|
|
|
|
# status on each of the submodules and adds a summary row for any
|
|
|
|
# dirty submodules. (See the "S..." bits in porcelain V2 output.)
|
|
|
|
#
|
|
|
|
# It is therefore important that the top level status not be tricked
|
|
|
|
# by the FSMonitor response to skip those recursive calls. That is,
|
|
|
|
# even if FSMonitor says that the mtime of the submodule directory
|
|
|
|
# hasn't changed and it could be implicitly marked valid, we must
|
|
|
|
# not take that shortcut. We need to force the recusion into the
|
|
|
|
# submodule so that we get a summary of the status *within* the
|
|
|
|
# submodule.
|
|
|
|
|
|
|
|
create_super () {
|
|
|
|
super="$1" &&
|
|
|
|
|
|
|
|
git init "$super" &&
|
|
|
|
echo x >"$super/file_1" &&
|
|
|
|
echo y >"$super/file_2" &&
|
|
|
|
echo z >"$super/file_3" &&
|
|
|
|
mkdir "$super/dir_1" &&
|
|
|
|
echo a >"$super/dir_1/file_11" &&
|
|
|
|
echo b >"$super/dir_1/file_12" &&
|
|
|
|
mkdir "$super/dir_1/dir_2" &&
|
|
|
|
echo a >"$super/dir_1/dir_2/file_21" &&
|
|
|
|
echo b >"$super/dir_1/dir_2/file_22" &&
|
|
|
|
git -C "$super" add . &&
|
|
|
|
git -C "$super" commit -m "initial $super commit"
|
|
|
|
}
|
|
|
|
|
|
|
|
create_sub () {
|
|
|
|
sub="$1" &&
|
|
|
|
|
|
|
|
git init "$sub" &&
|
|
|
|
echo x >"$sub/file_x" &&
|
|
|
|
echo y >"$sub/file_y" &&
|
|
|
|
echo z >"$sub/file_z" &&
|
|
|
|
mkdir "$sub/dir_x" &&
|
|
|
|
echo a >"$sub/dir_x/file_a" &&
|
|
|
|
echo b >"$sub/dir_x/file_b" &&
|
|
|
|
mkdir "$sub/dir_x/dir_y" &&
|
|
|
|
echo a >"$sub/dir_x/dir_y/file_a" &&
|
|
|
|
echo b >"$sub/dir_x/dir_y/file_b" &&
|
|
|
|
git -C "$sub" add . &&
|
|
|
|
git -C "$sub" commit -m "initial $sub commit"
|
|
|
|
}
|
|
|
|
|
|
|
|
my_match_and_clean () {
|
|
|
|
git -C super --no-optional-locks status --porcelain=v2 >actual.with &&
|
|
|
|
git -C super --no-optional-locks -c core.fsmonitor=false \
|
|
|
|
status --porcelain=v2 >actual.without &&
|
|
|
|
test_cmp actual.with actual.without &&
|
|
|
|
|
2023-09-11 17:09:02 +00:00
|
|
|
git -C super --no-optional-locks diff-index --name-status HEAD >actual.with &&
|
|
|
|
git -C super --no-optional-locks -c core.fsmonitor=false \
|
|
|
|
diff-index --name-status HEAD >actual.without &&
|
|
|
|
test_cmp actual.with actual.without &&
|
|
|
|
|
2022-05-26 21:47:17 +00:00
|
|
|
git -C super/dir_1/dir_2/sub reset --hard &&
|
|
|
|
git -C super/dir_1/dir_2/sub clean -d -f
|
|
|
|
}
|
|
|
|
|
2022-09-30 20:47:00 +00:00
|
|
|
test_expect_success 'submodule setup' '
|
|
|
|
git config --global protocol.file.allow always
|
|
|
|
'
|
|
|
|
|
2022-05-26 21:47:17 +00:00
|
|
|
test_expect_success 'submodule always visited' '
|
|
|
|
test_when_finished "git -C super fsmonitor--daemon stop; \
|
|
|
|
rm -rf super; \
|
|
|
|
rm -rf sub" &&
|
|
|
|
|
|
|
|
create_super super &&
|
|
|
|
create_sub sub &&
|
|
|
|
|
|
|
|
git -C super submodule add ../sub ./dir_1/dir_2/sub &&
|
|
|
|
git -C super commit -m "add sub" &&
|
|
|
|
|
|
|
|
start_daemon -C super &&
|
|
|
|
git -C super config core.fsmonitor true &&
|
|
|
|
git -C super update-index --fsmonitor &&
|
|
|
|
git -C super status &&
|
|
|
|
|
|
|
|
# Now run pairs of commands w/ and w/o FSMonitor while we make
|
|
|
|
# some dirt in the submodule and confirm matching output.
|
|
|
|
|
|
|
|
# Completely clean status.
|
|
|
|
my_match_and_clean &&
|
|
|
|
|
|
|
|
# .M S..U
|
|
|
|
echo z >super/dir_1/dir_2/sub/dir_x/dir_y/foobar_u &&
|
|
|
|
my_match_and_clean &&
|
|
|
|
|
|
|
|
# .M S.M.
|
|
|
|
echo z >super/dir_1/dir_2/sub/dir_x/dir_y/foobar_m &&
|
|
|
|
git -C super/dir_1/dir_2/sub add . &&
|
|
|
|
my_match_and_clean &&
|
|
|
|
|
|
|
|
# .M S.M.
|
|
|
|
echo z >>super/dir_1/dir_2/sub/dir_x/dir_y/file_a &&
|
|
|
|
git -C super/dir_1/dir_2/sub add . &&
|
|
|
|
my_match_and_clean &&
|
|
|
|
|
|
|
|
# .M SC..
|
|
|
|
echo z >>super/dir_1/dir_2/sub/dir_x/dir_y/file_a &&
|
|
|
|
git -C super/dir_1/dir_2/sub add . &&
|
|
|
|
git -C super/dir_1/dir_2/sub commit -m "SC.." &&
|
|
|
|
my_match_and_clean
|
|
|
|
'
|
|
|
|
|
2022-05-26 21:47:23 +00:00
|
|
|
# If a submodule has a `sub/.git/` directory (rather than a file
|
|
|
|
# pointing to the super's `.git/modules/sub`) and `core.fsmonitor`
|
|
|
|
# turned on in the submodule and the daemon is not yet started in
|
|
|
|
# the submodule, and someone does a `git submodule absorbgitdirs`
|
|
|
|
# in the super, Git will recursively invoke `git submodule--helper`
|
|
|
|
# to do the work and this may try to read the index. This will
|
submodule--helper: don't use global --super-prefix in "absorbgitdirs"
The "--super-prefix" facility was introduced in [1] has always been a
transitory hack, which is why we've made it an error to supply it as
an option to "git" to commands that don't know about it.
That's been a good goal, as it has a global effect we haven't wanted
calls to get_super_prefix() from built-ins we didn't expect.
But it has meant that when we've had chains of different built-ins
using it all of the processes in that "chain" have needed to support
it, and worse processes that don't need it have needed to ask for
"SUPPORT_SUPER_PREFIX" because their parent process needs it.
That's how "fsmonitor--daemon" ended up with it, per [2] it's called
from (among other things) "submodule--helper absorbgitdirs", but as we
declared "submodule--helper" as "SUPPORT_SUPER_PREFIX" we needed to
declare "fsmonitor--daemon" as accepting it too, even though it
doesn't care about it.
But in the case of "absorbgitdirs" it only needed "--super-prefix" to
invoke itself recursively, and we'd never have another "in-between"
process in the chain. So we didn't need the bigger hammer of "git
--super-prefix", and the "setenv(GIT_SUPER_PREFIX_ENVIRONMENT, ...)"
that it entails.
Let's instead accept a hidden "--super-prefix" option to
"submodule--helper absorbgitdirs" itself.
Eventually (as with all other "--super-prefix" users) we'll want to
clean this code up so that this all happens in-process. I.e. needing
any variant of "--super-prefix" is itself a hack around our various
global state, and implicit reliance on "the_repository". This stepping
stone makes such an eventual change easier, as we'll need to deal with
less global state at that point.
The "fsmonitor--daemon" test adjusted here was added in [3]. To assert
that it didn't run into the "--super-prefix" message it was asserting
the output it didn't have. Let's instead assert the full output that
we *do* have, using the same pattern as a preceding change to
"t/t7412-submodule-absorbgitdirs.sh" used.
We could also remove the test entirely (as [4] did), but even though
the initial reason for having it is gone we're still getting some
marginal benefit from testing the "fsmonitor" and "submodule
absorbgitdirs" interaction, so let's keep it.
The change here to have either a NULL or non-"" string as a
"super_prefix" instead of the previous arrangement of "" or non-"" is
somewhat arbitrary. We could also decide to never have to check for
NULL.
As we'll be changing the rest of the "git --super-prefix" users to the
same pattern, leaving them all consistent makes sense. Why not pick ""
over NULL? Because that's how the "prefix" works[5], and having
"prefix" and "super_prefix" work the same way will be less
confusing. That "prefix" picked NULL instead of "" is itself
arbitrary, but as it's easy to make this small bit of our overall API
consistent, let's go with that.
1. 74866d75793 (git: make super-prefix option, 2016-10-07)
2. 53fcfbc84f6 (fsmonitor--daemon: allow --super-prefix argument,
2022-05-26)
3. 53fcfbc84f6 (fsmonitor--daemon: allow --super-prefix argument,
2022-05-26)
4. https://lore.kernel.org/git/20221109004708.97668-5-chooglen@google.com/
5. 9725c8dda20 (built-ins: trust the "prefix" from run_builtin(),
2022-02-16)
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-20 12:39:51 +00:00
|
|
|
# try to start the daemon in the submodule.
|
2022-05-26 21:47:23 +00:00
|
|
|
|
submodule--helper: don't use global --super-prefix in "absorbgitdirs"
The "--super-prefix" facility was introduced in [1] has always been a
transitory hack, which is why we've made it an error to supply it as
an option to "git" to commands that don't know about it.
That's been a good goal, as it has a global effect we haven't wanted
calls to get_super_prefix() from built-ins we didn't expect.
But it has meant that when we've had chains of different built-ins
using it all of the processes in that "chain" have needed to support
it, and worse processes that don't need it have needed to ask for
"SUPPORT_SUPER_PREFIX" because their parent process needs it.
That's how "fsmonitor--daemon" ended up with it, per [2] it's called
from (among other things) "submodule--helper absorbgitdirs", but as we
declared "submodule--helper" as "SUPPORT_SUPER_PREFIX" we needed to
declare "fsmonitor--daemon" as accepting it too, even though it
doesn't care about it.
But in the case of "absorbgitdirs" it only needed "--super-prefix" to
invoke itself recursively, and we'd never have another "in-between"
process in the chain. So we didn't need the bigger hammer of "git
--super-prefix", and the "setenv(GIT_SUPER_PREFIX_ENVIRONMENT, ...)"
that it entails.
Let's instead accept a hidden "--super-prefix" option to
"submodule--helper absorbgitdirs" itself.
Eventually (as with all other "--super-prefix" users) we'll want to
clean this code up so that this all happens in-process. I.e. needing
any variant of "--super-prefix" is itself a hack around our various
global state, and implicit reliance on "the_repository". This stepping
stone makes such an eventual change easier, as we'll need to deal with
less global state at that point.
The "fsmonitor--daemon" test adjusted here was added in [3]. To assert
that it didn't run into the "--super-prefix" message it was asserting
the output it didn't have. Let's instead assert the full output that
we *do* have, using the same pattern as a preceding change to
"t/t7412-submodule-absorbgitdirs.sh" used.
We could also remove the test entirely (as [4] did), but even though
the initial reason for having it is gone we're still getting some
marginal benefit from testing the "fsmonitor" and "submodule
absorbgitdirs" interaction, so let's keep it.
The change here to have either a NULL or non-"" string as a
"super_prefix" instead of the previous arrangement of "" or non-"" is
somewhat arbitrary. We could also decide to never have to check for
NULL.
As we'll be changing the rest of the "git --super-prefix" users to the
same pattern, leaving them all consistent makes sense. Why not pick ""
over NULL? Because that's how the "prefix" works[5], and having
"prefix" and "super_prefix" work the same way will be less
confusing. That "prefix" picked NULL instead of "" is itself
arbitrary, but as it's easy to make this small bit of our overall API
consistent, let's go with that.
1. 74866d75793 (git: make super-prefix option, 2016-10-07)
2. 53fcfbc84f6 (fsmonitor--daemon: allow --super-prefix argument,
2022-05-26)
3. 53fcfbc84f6 (fsmonitor--daemon: allow --super-prefix argument,
2022-05-26)
4. https://lore.kernel.org/git/20221109004708.97668-5-chooglen@google.com/
5. 9725c8dda20 (built-ins: trust the "prefix" from run_builtin(),
2022-02-16)
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-20 12:39:51 +00:00
|
|
|
test_expect_success "submodule absorbgitdirs implicitly starts daemon" '
|
2022-05-26 21:47:23 +00:00
|
|
|
test_when_finished "rm -rf super; \
|
|
|
|
rm -rf sub; \
|
|
|
|
rm super-sub.trace" &&
|
|
|
|
|
|
|
|
create_super super &&
|
|
|
|
create_sub sub &&
|
|
|
|
|
|
|
|
# Copy rather than submodule add so that we get a .git dir.
|
|
|
|
cp -R ./sub ./super/dir_1/dir_2/sub &&
|
|
|
|
|
|
|
|
git -C super/dir_1/dir_2/sub config core.fsmonitor true &&
|
|
|
|
|
|
|
|
git -C super submodule add ../sub ./dir_1/dir_2/sub &&
|
|
|
|
git -C super commit -m "add sub" &&
|
|
|
|
|
|
|
|
test_path_is_dir super/dir_1/dir_2/sub/.git &&
|
|
|
|
|
submodule--helper: don't use global --super-prefix in "absorbgitdirs"
The "--super-prefix" facility was introduced in [1] has always been a
transitory hack, which is why we've made it an error to supply it as
an option to "git" to commands that don't know about it.
That's been a good goal, as it has a global effect we haven't wanted
calls to get_super_prefix() from built-ins we didn't expect.
But it has meant that when we've had chains of different built-ins
using it all of the processes in that "chain" have needed to support
it, and worse processes that don't need it have needed to ask for
"SUPPORT_SUPER_PREFIX" because their parent process needs it.
That's how "fsmonitor--daemon" ended up with it, per [2] it's called
from (among other things) "submodule--helper absorbgitdirs", but as we
declared "submodule--helper" as "SUPPORT_SUPER_PREFIX" we needed to
declare "fsmonitor--daemon" as accepting it too, even though it
doesn't care about it.
But in the case of "absorbgitdirs" it only needed "--super-prefix" to
invoke itself recursively, and we'd never have another "in-between"
process in the chain. So we didn't need the bigger hammer of "git
--super-prefix", and the "setenv(GIT_SUPER_PREFIX_ENVIRONMENT, ...)"
that it entails.
Let's instead accept a hidden "--super-prefix" option to
"submodule--helper absorbgitdirs" itself.
Eventually (as with all other "--super-prefix" users) we'll want to
clean this code up so that this all happens in-process. I.e. needing
any variant of "--super-prefix" is itself a hack around our various
global state, and implicit reliance on "the_repository". This stepping
stone makes such an eventual change easier, as we'll need to deal with
less global state at that point.
The "fsmonitor--daemon" test adjusted here was added in [3]. To assert
that it didn't run into the "--super-prefix" message it was asserting
the output it didn't have. Let's instead assert the full output that
we *do* have, using the same pattern as a preceding change to
"t/t7412-submodule-absorbgitdirs.sh" used.
We could also remove the test entirely (as [4] did), but even though
the initial reason for having it is gone we're still getting some
marginal benefit from testing the "fsmonitor" and "submodule
absorbgitdirs" interaction, so let's keep it.
The change here to have either a NULL or non-"" string as a
"super_prefix" instead of the previous arrangement of "" or non-"" is
somewhat arbitrary. We could also decide to never have to check for
NULL.
As we'll be changing the rest of the "git --super-prefix" users to the
same pattern, leaving them all consistent makes sense. Why not pick ""
over NULL? Because that's how the "prefix" works[5], and having
"prefix" and "super_prefix" work the same way will be less
confusing. That "prefix" picked NULL instead of "" is itself
arbitrary, but as it's easy to make this small bit of our overall API
consistent, let's go with that.
1. 74866d75793 (git: make super-prefix option, 2016-10-07)
2. 53fcfbc84f6 (fsmonitor--daemon: allow --super-prefix argument,
2022-05-26)
3. 53fcfbc84f6 (fsmonitor--daemon: allow --super-prefix argument,
2022-05-26)
4. https://lore.kernel.org/git/20221109004708.97668-5-chooglen@google.com/
5. 9725c8dda20 (built-ins: trust the "prefix" from run_builtin(),
2022-02-16)
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-20 12:39:51 +00:00
|
|
|
cwd="$(cd super && pwd)" &&
|
|
|
|
cat >expect <<-EOF &&
|
|
|
|
Migrating git directory of '\''dir_1/dir_2/sub'\'' from
|
|
|
|
'\''$cwd/dir_1/dir_2/sub/.git'\'' to
|
|
|
|
'\''$cwd/.git/modules/dir_1/dir_2/sub'\''
|
|
|
|
EOF
|
2022-05-26 21:47:23 +00:00
|
|
|
GIT_TRACE2_EVENT="$PWD/super-sub.trace" \
|
submodule--helper: don't use global --super-prefix in "absorbgitdirs"
The "--super-prefix" facility was introduced in [1] has always been a
transitory hack, which is why we've made it an error to supply it as
an option to "git" to commands that don't know about it.
That's been a good goal, as it has a global effect we haven't wanted
calls to get_super_prefix() from built-ins we didn't expect.
But it has meant that when we've had chains of different built-ins
using it all of the processes in that "chain" have needed to support
it, and worse processes that don't need it have needed to ask for
"SUPPORT_SUPER_PREFIX" because their parent process needs it.
That's how "fsmonitor--daemon" ended up with it, per [2] it's called
from (among other things) "submodule--helper absorbgitdirs", but as we
declared "submodule--helper" as "SUPPORT_SUPER_PREFIX" we needed to
declare "fsmonitor--daemon" as accepting it too, even though it
doesn't care about it.
But in the case of "absorbgitdirs" it only needed "--super-prefix" to
invoke itself recursively, and we'd never have another "in-between"
process in the chain. So we didn't need the bigger hammer of "git
--super-prefix", and the "setenv(GIT_SUPER_PREFIX_ENVIRONMENT, ...)"
that it entails.
Let's instead accept a hidden "--super-prefix" option to
"submodule--helper absorbgitdirs" itself.
Eventually (as with all other "--super-prefix" users) we'll want to
clean this code up so that this all happens in-process. I.e. needing
any variant of "--super-prefix" is itself a hack around our various
global state, and implicit reliance on "the_repository". This stepping
stone makes such an eventual change easier, as we'll need to deal with
less global state at that point.
The "fsmonitor--daemon" test adjusted here was added in [3]. To assert
that it didn't run into the "--super-prefix" message it was asserting
the output it didn't have. Let's instead assert the full output that
we *do* have, using the same pattern as a preceding change to
"t/t7412-submodule-absorbgitdirs.sh" used.
We could also remove the test entirely (as [4] did), but even though
the initial reason for having it is gone we're still getting some
marginal benefit from testing the "fsmonitor" and "submodule
absorbgitdirs" interaction, so let's keep it.
The change here to have either a NULL or non-"" string as a
"super_prefix" instead of the previous arrangement of "" or non-"" is
somewhat arbitrary. We could also decide to never have to check for
NULL.
As we'll be changing the rest of the "git --super-prefix" users to the
same pattern, leaving them all consistent makes sense. Why not pick ""
over NULL? Because that's how the "prefix" works[5], and having
"prefix" and "super_prefix" work the same way will be less
confusing. That "prefix" picked NULL instead of "" is itself
arbitrary, but as it's easy to make this small bit of our overall API
consistent, let's go with that.
1. 74866d75793 (git: make super-prefix option, 2016-10-07)
2. 53fcfbc84f6 (fsmonitor--daemon: allow --super-prefix argument,
2022-05-26)
3. 53fcfbc84f6 (fsmonitor--daemon: allow --super-prefix argument,
2022-05-26)
4. https://lore.kernel.org/git/20221109004708.97668-5-chooglen@google.com/
5. 9725c8dda20 (built-ins: trust the "prefix" from run_builtin(),
2022-02-16)
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-20 12:39:51 +00:00
|
|
|
git -C super submodule absorbgitdirs >out 2>actual &&
|
|
|
|
test_cmp expect actual &&
|
|
|
|
test_must_be_empty out &&
|
2022-05-26 21:47:23 +00:00
|
|
|
|
submodule--helper: don't use global --super-prefix in "absorbgitdirs"
The "--super-prefix" facility was introduced in [1] has always been a
transitory hack, which is why we've made it an error to supply it as
an option to "git" to commands that don't know about it.
That's been a good goal, as it has a global effect we haven't wanted
calls to get_super_prefix() from built-ins we didn't expect.
But it has meant that when we've had chains of different built-ins
using it all of the processes in that "chain" have needed to support
it, and worse processes that don't need it have needed to ask for
"SUPPORT_SUPER_PREFIX" because their parent process needs it.
That's how "fsmonitor--daemon" ended up with it, per [2] it's called
from (among other things) "submodule--helper absorbgitdirs", but as we
declared "submodule--helper" as "SUPPORT_SUPER_PREFIX" we needed to
declare "fsmonitor--daemon" as accepting it too, even though it
doesn't care about it.
But in the case of "absorbgitdirs" it only needed "--super-prefix" to
invoke itself recursively, and we'd never have another "in-between"
process in the chain. So we didn't need the bigger hammer of "git
--super-prefix", and the "setenv(GIT_SUPER_PREFIX_ENVIRONMENT, ...)"
that it entails.
Let's instead accept a hidden "--super-prefix" option to
"submodule--helper absorbgitdirs" itself.
Eventually (as with all other "--super-prefix" users) we'll want to
clean this code up so that this all happens in-process. I.e. needing
any variant of "--super-prefix" is itself a hack around our various
global state, and implicit reliance on "the_repository". This stepping
stone makes such an eventual change easier, as we'll need to deal with
less global state at that point.
The "fsmonitor--daemon" test adjusted here was added in [3]. To assert
that it didn't run into the "--super-prefix" message it was asserting
the output it didn't have. Let's instead assert the full output that
we *do* have, using the same pattern as a preceding change to
"t/t7412-submodule-absorbgitdirs.sh" used.
We could also remove the test entirely (as [4] did), but even though
the initial reason for having it is gone we're still getting some
marginal benefit from testing the "fsmonitor" and "submodule
absorbgitdirs" interaction, so let's keep it.
The change here to have either a NULL or non-"" string as a
"super_prefix" instead of the previous arrangement of "" or non-"" is
somewhat arbitrary. We could also decide to never have to check for
NULL.
As we'll be changing the rest of the "git --super-prefix" users to the
same pattern, leaving them all consistent makes sense. Why not pick ""
over NULL? Because that's how the "prefix" works[5], and having
"prefix" and "super_prefix" work the same way will be less
confusing. That "prefix" picked NULL instead of "" is itself
arbitrary, but as it's easy to make this small bit of our overall API
consistent, let's go with that.
1. 74866d75793 (git: make super-prefix option, 2016-10-07)
2. 53fcfbc84f6 (fsmonitor--daemon: allow --super-prefix argument,
2022-05-26)
3. 53fcfbc84f6 (fsmonitor--daemon: allow --super-prefix argument,
2022-05-26)
4. https://lore.kernel.org/git/20221109004708.97668-5-chooglen@google.com/
5. 9725c8dda20 (built-ins: trust the "prefix" from run_builtin(),
2022-02-16)
Signed-off-by: Glen Choo <chooglen@google.com>
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-12-20 12:39:51 +00:00
|
|
|
# Confirm that the trace2 log contains a record of the
|
|
|
|
# daemon starting.
|
|
|
|
test_subcommand git fsmonitor--daemon start <super-sub.trace
|
2022-05-26 21:47:23 +00:00
|
|
|
'
|
|
|
|
|
2022-05-26 21:47:18 +00:00
|
|
|
# On a case-insensitive file system, confirm that the daemon
|
|
|
|
# notices when the .git directory is moved/renamed/deleted
|
2023-01-07 13:56:55 +00:00
|
|
|
# regardless of how it is spelled in the FS event.
|
2022-05-26 21:47:18 +00:00
|
|
|
# That is, does the FS event receive the spelling of the
|
|
|
|
# operation or does it receive the spelling preserved with
|
|
|
|
# the file/directory.
|
|
|
|
#
|
|
|
|
test_expect_success CASE_INSENSITIVE_FS 'case insensitive+preserving' '
|
2023-01-11 23:32:42 +00:00
|
|
|
test_when_finished "stop_daemon_delete_repo test_insensitive" &&
|
2022-05-26 21:47:18 +00:00
|
|
|
|
|
|
|
git init test_insensitive &&
|
|
|
|
|
|
|
|
start_daemon -C test_insensitive --tf "$PWD/insensitive.trace" &&
|
|
|
|
|
|
|
|
mkdir -p test_insensitive/abc/def &&
|
|
|
|
echo xyz >test_insensitive/ABC/DEF/xyz &&
|
|
|
|
|
|
|
|
test_path_is_dir test_insensitive/.git &&
|
|
|
|
test_path_is_dir test_insensitive/.GIT &&
|
|
|
|
|
2023-01-07 13:56:55 +00:00
|
|
|
# Rename .git using an alternate spelling to verify that
|
|
|
|
# the daemon detects it and automatically shuts down.
|
2022-05-26 21:47:18 +00:00
|
|
|
mv test_insensitive/.GIT test_insensitive/.FOO &&
|
2022-05-26 21:47:24 +00:00
|
|
|
|
|
|
|
# See [1] above.
|
2022-05-26 21:47:18 +00:00
|
|
|
mv test_insensitive/.FOO test_insensitive/.git &&
|
2022-05-26 21:47:24 +00:00
|
|
|
|
|
|
|
verify_implicit_shutdown test_insensitive &&
|
2022-05-26 21:47:18 +00:00
|
|
|
|
|
|
|
# Verify that events were reported using on-disk spellings of the
|
|
|
|
# directories and files that we touched. We may or may not get a
|
|
|
|
# trailing slash on modified directories.
|
|
|
|
#
|
2022-09-21 13:02:31 +00:00
|
|
|
grep -E "^event: abc/?$" ./insensitive.trace &&
|
|
|
|
grep -E "^event: abc/def/?$" ./insensitive.trace &&
|
|
|
|
grep -E "^event: abc/def/xyz$" ./insensitive.trace
|
2022-05-26 21:47:18 +00:00
|
|
|
'
|
|
|
|
|
2022-05-26 21:47:22 +00:00
|
|
|
# The variable "unicode_debug" is defined in the following library
|
|
|
|
# script to dump information about how the (OS, FS) handles Unicode
|
|
|
|
# composition. Uncomment the following line if you want to enable it.
|
|
|
|
#
|
|
|
|
# unicode_debug=true
|
|
|
|
|
|
|
|
. "$TEST_DIRECTORY/lib-unicode-nfc-nfd.sh"
|
|
|
|
|
|
|
|
# See if the OS or filesystem does NFC/NFD aliasing/munging.
|
|
|
|
#
|
|
|
|
# The daemon should err on the side of caution and send BOTH the
|
|
|
|
# NFC and NFD forms. It does not know the original spelling of
|
|
|
|
# the pathname (how the user thinks it should be spelled), so
|
|
|
|
# emit both and let the client decide (when necessary). This is
|
|
|
|
# similar to "core.precomposeUnicode".
|
|
|
|
#
|
|
|
|
test_expect_success !UNICODE_COMPOSITION_SENSITIVE 'Unicode nfc/nfd' '
|
|
|
|
test_when_finished "stop_daemon_delete_repo test_unicode" &&
|
|
|
|
|
|
|
|
git init test_unicode &&
|
|
|
|
|
|
|
|
start_daemon -C test_unicode --tf "$PWD/unicode.trace" &&
|
|
|
|
|
|
|
|
# Create a directory using an NFC spelling.
|
|
|
|
#
|
|
|
|
mkdir test_unicode/nfc &&
|
|
|
|
mkdir test_unicode/nfc/c_${utf8_nfc} &&
|
|
|
|
|
|
|
|
# Create a directory using an NFD spelling.
|
|
|
|
#
|
|
|
|
mkdir test_unicode/nfd &&
|
|
|
|
mkdir test_unicode/nfd/d_${utf8_nfd} &&
|
|
|
|
|
|
|
|
git -C test_unicode fsmonitor--daemon stop &&
|
|
|
|
|
|
|
|
if test_have_prereq UNICODE_NFC_PRESERVED
|
|
|
|
then
|
|
|
|
# We should have seen NFC event from OS.
|
|
|
|
# We should not have synthesized an NFD event.
|
2022-09-21 13:02:31 +00:00
|
|
|
grep -E "^event: nfc/c_${utf8_nfc}/?$" ./unicode.trace &&
|
|
|
|
grep -E -v "^event: nfc/c_${utf8_nfd}/?$" ./unicode.trace
|
2022-05-26 21:47:22 +00:00
|
|
|
else
|
|
|
|
# We should have seen NFD event from OS.
|
|
|
|
# We should have synthesized an NFC event.
|
2022-09-21 13:02:31 +00:00
|
|
|
grep -E "^event: nfc/c_${utf8_nfd}/?$" ./unicode.trace &&
|
|
|
|
grep -E "^event: nfc/c_${utf8_nfc}/?$" ./unicode.trace
|
2022-05-26 21:47:22 +00:00
|
|
|
fi &&
|
|
|
|
|
|
|
|
# We assume UNICODE_NFD_PRESERVED.
|
|
|
|
# We should have seen explicit NFD from OS.
|
|
|
|
# We should have synthesized an NFC event.
|
2022-09-21 13:02:31 +00:00
|
|
|
grep -E "^event: nfd/d_${utf8_nfd}/?$" ./unicode.trace &&
|
|
|
|
grep -E "^event: nfd/d_${utf8_nfc}/?$" ./unicode.trace
|
2022-05-26 21:47:22 +00:00
|
|
|
'
|
|
|
|
|
2023-03-26 22:45:41 +00:00
|
|
|
test_expect_success 'split-index and FSMonitor work well together' '
|
split-index & fsmonitor: demonstrate a bug
This commit adds a new test case that demonstrates a bug in the
split-index code that is triggered under certain circumstances when the
FSMonitor is enabled, and its symptom manifests in the form of one of
the following error messages:
BUG: fsmonitor.c:20: fsmonitor_dirty has more entries than the index (2 > 1)
BUG: unpack-trees.c:776: pos <n> doesn't point to the first entry of <dir>/ in index
error: invalid path ''
error: The following untracked working tree files would be overwritten by reset:
initial.t
Which of these error messages appears depends on timing-dependent
conditions.
Technically the root cause lies with a bug in the split-index code that
has nothing to do with FSMonitor, but for the sake of this new test case
it was the easiest way to trigger the bug.
The bug is this: Under specific conditions, Git needs to skip writing
the "link" extension (which is the index extension containing the
information pertaining to the split-index). To do that, the `base_oid`
attribute of the `split_index` structure in the in-memory index is
zeroed out, and `do_write_index()` specifically checks for a "null"
`base_oid` to understand that the "link" extension should not be
written. However, this violates the consistency of the in-memory index
structure, but that does not cause problems in most cases because the
process exits without using the in-memory index structure anymore,
anyway.
But: _When_ the in-memory index is still used (which is the case e.g. in
`git rebase`), subsequent writes of `the_index` are at risk of writing
out a bogus index file, one that _should_ have a "link" extension but
does not. In many cases, the `SPLIT_INDEX_ORDERED` flag _happens_ to be
set for subsequent writes, forcing the shared index to be written, which
re-initializes `base_oid` to a non-bogus state, and all is good.
When it is _not_ set, however, all kinds of mayhem ensue, resulting in
above-mentioned error messages, and often enough putting worktrees in a
totally broken state where the only recourse is to manually delete the
`index` and the `index.lock` files and then call `git reset` manually.
Not something to ask users to do.
The reason why it is comparatively easy to trigger the bug with
FSMonitor is that there is _another_ bug in the FSMonitor code:
`mark_fsmonitor_valid()` sets `cache_changed` to 1, i.e. treating that
variable as a Boolean. But it is a bit field, and 1 happens to be the
`SOMETHING_CHANGED` bit that forces the "link" extension to be skipped
when writing the index, among other things.
"Comparatively easy" is a relative term in this context, for sure. The
essence of how the new test case triggers the bug is as following:
1. The `git rebase` invocation will first reset the worktree to
a commit that contains only the `one.t` file, and then execute a
rebase script that starts with the following commands (commit hashes
skipped):
label onto
reset initial
pick two
label two
reset two
pick three
[...]
2. Before executing the `label` command, a split index is written, as
well as the shared index.
3. The `reset initial` command in the rebase script writes out a new
split index but skips writing the shared index, as intended.
4. The `pick two` command updates the worktree and refreshes the index,
marking the `two.t` entry as valid via the FSMonitor, which sets the
`SOMETHING_CHANGED` bit in `cache_changed`, which in turn causes the
`base_oid` attribute to be zeroed out and a full (non-split) index
to be written (making sure _not_ to write the "link" extension).
5. Now, the `reset two` command will leave the worktree alone, but
still write out a new split index, not writing the shared index
(because `base_oid` is still zeroed out, and there is no index entry
update requiring it to be written, either).
6. When it is turn to run `pick three`, the index is read, but it is
too short: It only contains a single entry when there should be two,
because the "link" extension is missing from the written-out index
file.
There are three bugs at play, actually, which will be fixed over the
course of the next commits:
- The `base_oid` attribute should not be zeroed out to indicate when
the "link" extension should not be written, as it puts the in-memory
index structure into an inconsistent state.
- The FSMonitor should not overwrite bits in `cache_changed`.
- The `unpack_trees()` function tries to reuse the `split_index`
structure from the source index, if any, but does not propagate the
`SPLIT_INDEX_ORDERED` flag.
While a fix for the second bug would let this test case pass, there are
other conditions where the `SOMETHING_CHANGED` bit is set. Therefore,
the bug that most crucially needs to be fixed is the first one.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-03-26 22:45:40 +00:00
|
|
|
git init split-index &&
|
|
|
|
test_when_finished "git -C \"$PWD/split-index\" \
|
|
|
|
fsmonitor--daemon stop" &&
|
|
|
|
(
|
|
|
|
cd split-index &&
|
|
|
|
git config core.splitIndex true &&
|
|
|
|
# force split-index in most cases
|
|
|
|
git config splitIndex.maxPercentChange 99 &&
|
|
|
|
git config core.fsmonitor true &&
|
|
|
|
|
|
|
|
# Create the following commit topology:
|
|
|
|
#
|
|
|
|
# * merge three
|
|
|
|
# |\
|
|
|
|
# | * three
|
|
|
|
# * | merge two
|
|
|
|
# |\|
|
|
|
|
# | * two
|
|
|
|
# * | one
|
|
|
|
# |/
|
|
|
|
# * 5a5efd7 initial
|
|
|
|
|
|
|
|
test_commit initial &&
|
|
|
|
test_commit two &&
|
|
|
|
test_commit three &&
|
|
|
|
git reset --hard initial &&
|
|
|
|
test_commit one &&
|
|
|
|
test_tick &&
|
|
|
|
git merge two &&
|
|
|
|
test_tick &&
|
|
|
|
git merge three &&
|
|
|
|
|
|
|
|
git rebase --force-rebase -r one
|
|
|
|
)
|
|
|
|
'
|
|
|
|
|
2022-03-25 18:03:04 +00:00
|
|
|
test_done
|