# ensure XDG_RUNTIME_DIR is not set
delete $ENV{XDG_RUNTIME_DIR};
+
+# See which files exist in /tmp before to not mistakenly check an already
+# existing tmpdir of another i3 instance.
+my @files_before = </tmp/i3-*>;
my $pid = launch_with_config($config, 1);
+my @files_after = </tmp/i3-*>;
+@files_after = grep { !($_ ~~ @files_before) } @files_after;
+
+is(@files_after, 1, 'one new temp directory');
my $folder = "/tmp/i3-" . getpwuid(getuid());
+like($files_after[0], qr/^$folder/, 'temp directory matches expected pattern');
+$folder = $files_after[0];
+
ok(-d $folder, "folder $folder exists");
my $socketpath = "$folder/ipc-socket." . $pid;
ok(-S $socketpath, "file $socketpath exists and is a socket");