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|
#!/usr/bin/perl
use v5.18;
use warnings;
use Test2::V0 0.000148; # is_refcount
use Object::Pad 0.800;
use constant HAVE_DATA_DUMP => defined eval { require Data::Dump; };
class Counter {
field $count = 0;
method inc { $count++ }
method count { return $count; }
}
{
my $counter = Counter->new;
is( $counter->count, 0, 'Count initially 0' );
$counter->inc;
$counter->inc;
$counter->inc;
is( $counter->count, 3, 'Count is now 3 after ->inc x 3' );
}
{
use Data::Dumper;
class AllTheTypes {
field $scalar = 123;
field @array = ( 45, 67 );
field %hash = ( 89 => 10 );
method test {
::is( $scalar, 123, '$scalar field' );
::is( \@array, [ 45, 67 ], '@array field' );
::is( \%hash, { 89 => 10 }, '%hash field' );
}
}
my $instance = AllTheTypes->new;
$instance->test;
# The exact output of this test is fragile as it depends on the internal
# representation of the instance, which we do not document and is not part
# of the API guarantee. We're not really checking that it has exactly this
# output, just that Data::Dumper itself doesn't crash. If a later version
# changes the representation so that the output here differs, just change
# the test as long as it is something sensible.
is( Dumper($instance) =~ s/\s+//gr,
q($VAR1=bless([123,[45,67],{'89'=>10}],'AllTheTypes');),
'Dumper($instance) sees field data' );
HAVE_DATA_DUMP and is( Data::Dump::pp($instance),
q(bless([123, [45, 67], { 89 => 10 }], "AllTheTypes")),
'pp($instance) sees field data' );
}
{
use Object::Pad ':experimental(init_expr)';
my $class_in_fieldblock;
class AllTheTypesByBlock {
field $scalar { "one" }
field @array { "two", "three" }
field %hash { four => "five" }
field $__dummy { $class_in_fieldblock = __CLASS__ }
method test {
::is( $scalar, "one", '$scalar field' );
::is( \@array, [qw( two three )], '@array field' );
::is( \%hash, { four => "five" }, '%hash field' );
}
}
AllTheTypesByBlock->new->test;
is( $class_in_fieldblock, "AllTheTypesByBlock" );
}
# Variant of RT132228 about individual field lexicals
class Holder {
field $field;
method field :lvalue { $field }
}
{
my $datum = [];
is_oneref( $datum, '$datum initially' );
my $holder = Holder->new;
$holder->field = $datum;
is_refcount( $datum, 2, '$datum while held by Holder' );
undef $holder;
is_oneref( $datum, '$datum finally' );
}
# Fields are visible to string-eval()
{
class Evil {
field $field;
method test {
$field = "the value";
::is( eval '$field', "the value", 'fields are visible to string eval()' );
}
}
Evil->new->test;
}
{
class FieldWithListExpr {
field @array = ( 0 ) x 5;
}
pass( 'Code compiles with listexpr as field initialiser' );
}
ok( !eval <<'EOPERL',
class SelfInField {
field $x = $self + 1;
}
EOPERL
'field init expression cannot see $self' );
# TODO: Annoyingly, real parse error message has disappeared entirely from $@
# and all we get is "parse failed--compilation aborted at ..." so there's no
# point like()-testing $@ here
# RT154639 - fields should not be visible to :common methods
my $e = eval <<'EOPERL' ? undef : $@;
class FieldInCommonMethod {
field $x;
method m :common { $x }
}
EOPERL
like( $e, qr/^Global symbol "\$x" requires explicit package name /,
'fields are not visible to :common methods' );
done_testing;
|
