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#!perl -w
# Copyright (C) 2020-2021 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
#
# Ensure FakeInotify can pick up rename(2) and link(2) operations
# used by Maildir writing tools
use strict;
use PublicInbox::TestCommon;
use_ok 'PublicInbox::FakeInotify';
my $MIN_FS_TICK = 0.011; # for low-res CONFIG_HZ=100 systems
my ($tmpdir, $for_destroy) = tmpdir();
mkdir "$tmpdir/new" or BAIL_OUT "mkdir: $!";
mkdir "$tmpdir/new/rmd" or BAIL_OUT "mkdir: $!";
open my $fh, '>', "$tmpdir/tst" or BAIL_OUT "open: $!";
close $fh or BAIL_OUT "close: $!";
my $fi = PublicInbox::FakeInotify->new;
my $mask = PublicInbox::FakeInotify::MOVED_TO_OR_CREATE();
my $w = $fi->watch("$tmpdir/new", $mask);
tick $MIN_FS_TICK;
rename("$tmpdir/tst", "$tmpdir/new/tst") or BAIL_OUT "rename: $!";
my @events = map { $_->fullname } $fi->read;
is_deeply(\@events, ["$tmpdir/new/tst"], 'rename(2) detected');
tick $MIN_FS_TICK;
open $fh, '>', "$tmpdir/tst" or BAIL_OUT "open: $!";
close $fh or BAIL_OUT "close: $!";
link("$tmpdir/tst", "$tmpdir/new/link") or BAIL_OUT "link: $!";
@events = map { $_->fullname } $fi->read;
is_deeply(\@events, ["$tmpdir/new/link"], 'link(2) detected');
$w->cancel;
tick $MIN_FS_TICK;
link("$tmpdir/new/tst", "$tmpdir/new/link2") or BAIL_OUT "link: $!";
@events = map { $_->fullname } $fi->read;
is_deeply(\@events, [], 'link(2) not detected after cancel');
$fi->watch("$tmpdir/new", PublicInbox::FakeInotify::IN_DELETE());
tick $MIN_FS_TICK;
rmdir("$tmpdir/new/rmd") or xbail "rmdir: $!";
@events = $fi->read;
is_deeply([map{ $_->fullname }@events], ["$tmpdir/new/rmd"], 'rmdir detected');
ok($events[0]->IN_DELETE, 'IN_DELETE set on rmdir');
tick $MIN_FS_TICK;
unlink("$tmpdir/new/tst") or xbail "unlink: $!";
@events = grep { ref =~ /Gone/ } $fi->read;
is_deeply([map{ $_->fullname }@events], ["$tmpdir/new/tst"], 'unlink detected');
ok($events[0]->IN_DELETE, 'IN_DELETE set on unlink');
PublicInbox::DS->Reset;
done_testing;
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