mdw@git.distorted.org.uk Git - mLib/blob - sym-gtest

   1 #! /usr/bin/perl
   2 #
   3 # Generate a random test file for symbol table testing.
   4 #
   5 # Syntax reference:
   6 #
   7 #  set k v -- assign (textual) key k the (integer) value i
   8 #  get k -- display value at key k
   9 #  del k -- remove key k
  10 #  count -- show number of items
  11 #  show -- dump out the entire table, in alphabetical key order
  12
  13 sub random ($) {
  14   my $lim = shift;
  15   return int(rand($lim));
  16 }
  17
  18 open(DICT, "/usr/dict/words") or die("open(/usr/dict/words): $!");
  19 @w = <DICT>;
  20 chomp(@w);
  21 close(DICT);
  22
  23 %a = ();
  24
  25 $lines = shift || 100;
  26 $serial = 1;
  27 while ($lines) {
  28   $what = random(4);
  29   if ($what == 0) {
  30     my $k = $w[random(@w)];
  31     my $i = $serial++;
  32     print "set $k $i\n";
  33     $a{$k} = $i;
  34   } elsif ($what == 1) {
  35     my $k = $w[random(@w)];
  36     if (!exists($a{$w}) && random(8) != 0) { next; }
  37     print "get $k\n";
  38   } elsif ($what == 2) {
  39     my $k = $w[random(@w)];
  40     if (!exists($a{$w}) && random(8) != 0) { next; }
  41     print "del $k\n";
  42     delete($w{$k});
  43   } elsif (random(5) == 0) {
  44     print "count\n";
  45   } else { next; }
  46   $lines--;
  47 }
  48
  49 print "show\n";