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1 | #! /usr/bin/perl |
2 | # |
3 | # Generate a random test file for dynamic array testing. |
4 | # |
5 | # Syntax reference: |
6 | # |
7 | # push n, pop, shift, unshift n -- normal stack ops (pop and shift print) |
8 | # insert x y z ... -- insert items at beginning |
9 | # append x y z ... -- append items at end |
10 | # delete n -- remove n items from beginning |
11 | # reduce n -- remove n items from end |
12 | # set i n -- assign item at index i to be n |
13 | # get i -- display item at index i |
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14 | # first, last -- show first or last item |
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15 | # show -- write entire array to stdout, space separated on one line |
16 | |
17 | sub random ($) { |
18 | my $lim = shift; |
19 | return int(rand($lim)); |
20 | } |
21 | |
22 | $lines = shift || 100; |
23 | $max = 0; # Estimate of size of array |
24 | $serial = 1; |
25 | while ($lines) { |
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26 | $what = random(21); |
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27 | if ($what < 8) { |
28 | my $op = (qw(push pop shift unshift))[$what % 4]; |
29 | if ($op eq "push" || $op eq "unshift") { |
30 | my $n = $serial++; |
31 | $max++; |
32 | print "$op $n\n"; |
33 | } elsif ($max > 0) { |
34 | $max--; |
35 | print "$op\n"; |
36 | } |
37 | } elsif ($what < 10) { |
38 | my @n = ($serial++); |
39 | my $op = (qw(insert append))[$what % 2]; |
40 | push(@n, $serial++) while random(4) < 3; |
41 | print "$op ", join(" ", @n), "\n"; |
42 | $max += @n; |
43 | } elsif ($what < 12) { |
44 | if ($max < 10000) { next; } |
45 | my $n = 1; |
46 | my $op = (qw(delete reduce))[$what % 2]; |
47 | $n++ while random(4) < 3; |
48 | print "$op $n\n"; |
49 | $max -= $n; |
50 | if ($max < 0) { |
51 | $max = 0; |
52 | } |
53 | } elsif ($what < 16) { |
54 | my $i = random($max); |
55 | $i++ while random(4) < 2; |
56 | if ($what % 2 == 0) { |
57 | my $n = $serial++; |
58 | print "set $i $n\n"; |
59 | if ($i >= $max) { |
60 | $max = $i + 1; |
61 | } |
62 | } else { |
63 | print "get $i\n"; |
64 | } |
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65 | } elsif ($what < 20) { |
66 | my $op = (qw(first last))[$what % 2]; |
67 | print "$op\n" if $max; |
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68 | } elsif (random(10) == 0) { |
69 | print "show\n"; |
70 | } else { next; } |
71 | $lines--; |
72 | } |
73 | |
74 | print "show\n"; |