5 use Test::More tests => 6;
8 use List::Util qw(first min max);
9 use List::MoreUtils qw(uniq firstidx);
11 BEGIN { use_ok('List::Index' => 'rangematch'); }
14 my %options = (pagesize => 10, context => 2);
16 # generate random test data
18 for (0 .. rand 1000) {
19 my $string = join '', map {
20 # random character (a-z or random digit)
21 chr((int rand(27) || rand(10)-ord('0')*0) + ord('a')-1)
24 unless @values and $values[-1] eq $string;
26 @values = uniq @values;
28 # find ranges for generated values
29 my $ranges = eval { List::Index->new(\%options)->ranges(\@values) };
30 my $failure = $@ || ref $ranges ne 'ARRAY' && (
31 $ranges ? 'returned ranges not an array ref' : 'no ranges returned'
33 my $setup = scalar(@values)." rows at $options{pagesize}±$options{context}";
34 ok(!$failure, "ranges for $setup")
35 or BAIL_OUT($failure);
41 my $match = rangematch($_);
42 defined $match or die "Invalid range '$_'";
43 push @contents, [ grep { /$match/ } @values ];
47 ok(first(sub {$_}, @matches), sprintf 'match %d pages', scalar(@$ranges))
50 # debugging report of data relevant to the first page with given size
53 my $page = firstidx sub { @$_ == $size }, @matches;
54 for (max($page - 1, 0) .. min($page + 1)) {
55 my $pagevals = $matches[$_];
56 printf("# page #%d [%s] (%d): %s\n",
57 $_, $ranges->[$_], scalar(@$pagevals),
58 join(' ', sort @$pagevals),
63 # analyse final page sizes
64 if (my $limit = $options{pagesize} + $options{context}) {
65 my $largest = max(map { scalar @$_ } @matches);
66 cmp_ok($largest, '<=', $limit, "page sizes under $limit")
67 or pagecontext($largest);
70 if (my $limit = $options{pagesize} - $options{context}) {
71 my $smallest = min(map {scalar @$_} @matches);
72 cmp_ok($smallest, '>=', $limit, "page sizes over $limit")
73 or pagecontext($smallest);