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 $words = "/usr/dict/words";
  19 -r $words or $words = "/usr/share/dict/words";
  20 open(DICT, $words) or die("open($words): $!");
  21 @w = <DICT>;
  22 chomp(@w);
  23 close(DICT);
  24
  25 %a = ();
  26
  27 $lines = shift || 100;
  28 $serial = 1;
  29 while ($lines) {
  30   $what = random(4);
  31   if ($what == 0) {
  32     my $k = $w[random(@w)];
  33     my $i = $serial++;
  34     print "set $k $i\n";
  35     $a{$k} = $i;
  36   } elsif ($what == 1) {
  37     my $k = $w[random(@w)];
  38     if (!exists($a{$w}) && random(8) != 0) { next; }
  39     print "get $k\n";
  40   } elsif ($what == 2) {
  41     my $k = $w[random(@w)];
  42     if (!exists($a{$w}) && random(8) != 0) { next; }
  43     print "del $k\n";
  44     delete($w{$k});
  45   } elsif (random(5) == 0) {
  46     print "count\n";
  47   } else { next; }
  48   $lines--;
  49 }
  50
  51 print "show\n";