+# Copyright (C) 2016 all contributors <meta@public-inbox.org>
+# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
+use strict;
+use warnings;
+use Test::More;
+use File::Temp qw/tempdir/;
+my $tmpdir = tempdir('emergency-XXXXXX', TMPDIR => 1, CLEANUP => 1);
+use_ok 'PublicInbox::Emergency';
+
+{
+ my $md = "$tmpdir/a";
+ my $em = PublicInbox::Emergency->new($md);
+ ok(-d $md, 'Maildir a auto-created');
+ my @tmp = <$md/tmp/*>;
+ is(scalar @tmp, 0, 'no temporary files exist, yet');
+ $em->prepare(\"BLAH");
+ @tmp = <$md/tmp/*>;
+ is(scalar @tmp, 1, 'globbed one temporary file');
+ open my $fh, '<', $tmp[0] or die "failed to open: $!";
+ is("BLAH", <$fh>, 'wrote contents to temporary location');
+ my @new = <$md/new/*>;
+ is(scalar @new, 0, 'no new files exist, yet');
+ $em = undef;
+ @tmp = <$md/tmp/*>;
+ is(scalar @tmp, 0, 'temporary file no longer exists');
+ @new = <$md/new/*>;
+ is(scalar @new, 1, 'globbed one new file');
+ open $fh, '<', $new[0] or die "failed to open: $!";
+ is("BLAH", <$fh>, 'wrote contents to new location');
+}
+{
+ my $md = "$tmpdir/b";
+ my $em = PublicInbox::Emergency->new($md);
+ ok(-d $md, 'Maildir b auto-created');
+ my @tmp = <$md/tmp/*>;
+ is(scalar @tmp, 0, 'no temporary files exist, yet');
+ $em->prepare(\"BLAH");
+ @tmp = <$md/tmp/*>;
+ is(scalar @tmp, 1, 'globbed one temporary file');
+ open my $fh, '<', $tmp[0] or die "failed to open: $!";
+ is("BLAH", <$fh>, 'wrote contents to temporary location');
+ my @new = <$md/new/*>;
+ is(scalar @new, 0, 'no new files exist, yet');
+ is(sysread($em->fh, my $buf, 9), 4, 'read file handle exposed');
+ is($buf, 'BLAH', 'got expected data');
+ $em->abort;
+ @tmp = <$md/tmp/*>;
+ is(scalar @tmp, 0, 'temporary file no longer exists');
+ @new = <$md/new/*>;
+ is(scalar @new , 0, 'new file no longer exists');
+}
+
+done_testing();