1 files changed, 113 insertions, 0 deletions
diff --git a/tests/misc/tty-eof.pl b/tests/misc/tty-eof.pl
new file mode 100755
index 0000000..04bcb2e
--- /dev/null
+++ b/tests/misc/tty-eof.pl
@@ -0,0 +1,113 @@
+#!/usr/bin/perl
+# Test whether programs exit upon a single EOF from a tty.
+# Ensure that e.g., cat exits upon a single EOF (^D) from a tty.
+# Do the same for all programs that can read stdin,
+# require no arguments and that write to standard output.
+
+# Copyright (C) 2003-2020 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+use strict;
+(my $ME = $0) =~ s|.*/||;
+
+# Some older versions of Expect.pm (e.g. 1.07) lack the log_user method,
+# so check for that, too.
+eval { require Expect; Expect->require_version('1.11') };
+$@
+  and CuSkip::skip "$ME: this script requires Perl's Expect package >=1.11\n";
+
+{
+  my $fail = 0;
+  my @stdin_reading_commands = qw(
+    base32
+    base64
+    cat
+    cksum
+    dd
+    expand
+    fmt
+    fold
+    head
+    md5sum
+    nl
+    od
+    paste
+    pr
+    ptx
+    sha1sum
+    sha224sum
+    sha256sum
+    sha384sum
+    sha512sum
+    shuf
+    sort
+    sum
+    tac
+    tail
+    tee
+    tsort
+    unexpand
+    uniq
+    wc
+  );
+  my $stderr = 'tty-eof.err';
+  foreach my $cmd ((@stdin_reading_commands), 'cut -f2',
+                   'numfmt --invalid=ignore')
+    {
+      my $exp = new Expect;
+      $exp->log_user(0);
+      $ENV{built_programs} =~ /\b$cmd\b/ || next;
+      $exp->spawn("$cmd 2> $stderr")
+        or (warn "$ME: cannot run '$cmd': $!\n"), $fail=1, next;
+      # No input for cut -f2.
+      $cmd =~ /^cut/
+        or $exp->send("a b\n");
+      $exp->send("\cD");  # This is Control-D.  FIXME: what if that's not EOF?
+      $exp->expect (0, '-re', "^a b\\r?\$");
+      my $found = $exp->expect (1, '-re', "^.+\$");
+      $found and warn "F: $found: " . $exp->exp_match () . "\n";
+      $exp->expect(10, 'eof');
+      # Expect no output from cut, since we gave it no input.
+      defined $found || $cmd =~ /^cut/
+        or (warn "$ME: $cmd didn't produce expected output\n"),
+          $fail=1, next;
+      defined $exp->exitstatus
+        or (warn "$ME: $cmd didn't exit after ^D from standard input\n"),
+          $fail=1, next;
+      my $s = $exp->exitstatus;
+      $s == 0
+        or (warn "$ME: $cmd exited with status $s (expected 0)\n"),
+          $fail=1;
+      $exp->hard_close();
+
+      # dd normally writes to stderr.  If it exits successfully, we're done.
+      $cmd eq 'dd' && $s == 0
+        and next;
+
+      if (-s $stderr)
+        {
+          warn "$ME: $cmd wrote to stderr:\n";
+          system "cat $stderr";
+          $fail = 1;
+        }
+    }
+  continue
+    {
+      unlink $stderr
+        or warn "$ME: failed to remove stderr file from $cmd, $stderr: $!\n";
+    }
+
+  exit $fail
+}