-{
-ok(my $index = List::Index->new([qw(
- baa1 baa2 baa3 baaa bbc cbc daaa ea eaaa zed
-)]), 'variable length values');
-is_deeply($index->ranges({pagesize => 2, context => 0}), [
- map { [split /-/, $_, 2] } qw(baa.-baa baa.-bbb bbc-daa. daaa-eaa. eaaa-)
-], 'no context');
-is_deeply($index->ranges({pagesize => 2}), [
- map { [split /-/, $_, 2] } qw(b-baa baa.-ba bb-c d-ea. eaa-)
-], 'default context'); # context should be 1
-is_deeply($index->ranges({pagesize => 2, context => 2}), [
- map { [split /-/, $_, 2] } qw(b-a b-ba bb-c d-d e-)
-], 'overlap'); # first item equals second due to large context
-is_deeply($index->ranges({pagesize => 2, length => 1}), [
- map { [split /-/, $_, 2] } qw(b-a b-a b-c d-d e-)
-], 'single char');
-
-#pp($index->ranges({pagesize => 2, context => 2, length => 1}));
+subtest 'context' => sub {
+ plan tests => 4;
+ my $index = List::Index->new([qw(
+ baa1 baa2 baa3 baaa bbc cbc daaa ea eaaa zed
+ )]) or return;
+ is_deeply($index->ranges({pagesize => 2, context => 0}), [
+ qw(-baa. baa.-bbb bbc-daa. daaa-eaa. eaaa-)
+ ], 'no context');
+ is_deeply($index->ranges({pagesize => 2}), [
+ qw(-a b c d e-)
+ ], 'default context'); # context should be 1
+ is_deeply($index->ranges({pagesize => 2, context => 2}), [
+ qw(-a b-c d e-)
+ ], 'overlap'); # first item equals second due to large context
+ is_deeply($index->ranges({pagesize => 2, context => 0, length => 1}), [
+ qw(-a b-c d e-)
+ ], 'single char');
+
+ #pp($index->ranges({pagesize => 2, context => 2, length => 1}));
+};
+
+subtest 'distribution' => sub {
+ plan tests => 2;
+ my $index = List::Index->new([qw(
+ kkeg kl km kmlu knsy koxb kpeo kuaa kuab kuac
+ kuap kuaq kuq kux kzb lc lg lgu lgua lguc
+ lguq lgur lgus lgx lka lkq lks lln llq llx
+ )]) or return;
+TODO: {
+ local $TODO = 'under development';
+ is_deeply(
+ $index->ranges({ pagesize=>10, context=>3 }),
+ # shorten 'kuap' to 'ku' because lookbehind is 'kp...'
+ # 'lguq' matches 'lg', but may only backtrack to 'lgu'
+ [qw(-kt ku-lgt lgu-)],
+ 'lookbehind'
+ );
+}
+ is_deeply(
+ $index->ranges({ pagesize=>10, context=>4 }),
+ [qw(-kt ku-lf lg-)],
+ 'maximal lookahead'
+ );