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uniq.t
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uniq.t
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use v6-alpha;
use Test;
plan 9;
=begin description
This test tests the C<uniq> builtin.
Reference:
L<"http://groups.google.com/groups?selm=420DB295.3000902%40conway.org">
See the thread "[S29] uniq" on p6l, too.
=end description
{
my @array = <a b b c d e b b b b f b>;
is ~@array, "a b b c d e b b b b f b", "basic sanity";
is ~@array.uniq, "a b c d e f", "method form of uniq works";
is ~uniq(@array), "a b c d e f", "subroutine form of uniq works";
ok @array .= uniq, "inplace form of uniq works (1)";
is ~@array, "a b c d e f", "inplace form of uniq works (2)";
}
# With a userspecified criterion
{
my @array = <a b A c b d>;
# Semantics w/o junctions
is ~@array.uniq:{ lc $^a eq lc $^b }, "a b c d", "method form of uniq with own comparator works";
is ~uniq({ lc $^a eq lc $^b }, @array), "a b c d", "subroutine form of uniq with own comparator works";
# Semantics w/ junctions
# is eval('~@array.uniq:{ lc $^a eq lc $^b }.values.sort'), "A b c d a b c d";
}
# Error cases
{
#?pugs todo 'bug'
dies_ok { 42.uniq }, ".uniq should not work on scalars";
is (42,).uniq, 42, ".uniq should work on one-elem arrays";
}