Implement recall() in terms of wrap()

[perl/modules/Sub-Prototype-Util.git] / t / 12-recall.t

diff --git a/t/12-recall.t b/t/12-recall.t
new file mode 100644 (file)
index 0000000..916e7c5
--- /dev/null
+++ b/t/12-recall.t
@@ -0,0 +1,64 @@
+#!perl -T
+
+use strict;
+use warnings;
+
+use Test::More tests => 7 + 20 + (($^V ge v5.10.0) ? 4 : 0);
+
+use Scalar::Util qw/set_prototype/;
+use Sub::Prototype::Util qw/recall/;
+
+eval { recall undef };
+like($@, qr/^No\s+subroutine/, 'recall undef croaks');
+eval { recall '' };
+like($@, qr/^No\s+subroutine/, 'recall "" croaks');
+eval { recall \1 };
+like($@, qr/^Unhandled\s+SCALAR/, 'recall scalarref croaks');
+eval { recall [ ] };
+like($@, qr/^Unhandled\s+ARRAY/, 'recall arrayref croaks');
+eval { recall sub { } };
+like($@, qr/^Unhandled\s+CODE/, 'recall coderef croaks');
+eval { recall { 'foo' => undef, 'bar' => undef } };
+like($@, qr!exactly\s+one\s+key/value\s+pair!, 'recall hashref with 2 pairs croaks');
+eval { recall 'hlagh' };
+like($@, qr/^Undefined\s+subroutine/, 'recall <unknown> croaks');
+
+sub noproto { $_[1], $_[0] }
+sub mytrunc ($;$) { $_[1], $_[0] }
+sub mygrep1 (&@) { grep { $_[0]->() } @_[1 .. $#_] }
+sub mygrep2 (\&@) { grep { $_[0]->() } @_[1 .. $#_] }
+sub modify ($) { my $old = $_[0]; $_[0] = 5; $old }
+
+my $t = [ 1, 2, 3, 4 ];
+my $m = [ sub { $_ + 10 }, 1 .. 5 ];
+my $g = [ sub { $_ > 2 }, 1 .. 5 ];
+
+my @tests = (
+ [ 'main::noproto', 'no prototype', $t, $t, [ 2, 1 ] ],
+ [ { 'main::noproto' => undef }, 'no prototype forced', $t, $t, [ 2, 1 ] ],
+ [ 'CORE::push', 'push', [ [ 1, 2 ], 3, 5 ], [ [ 1, 2, 3, 5 ], 3, 5 ], [ 4 ] ],
+ [ { 'CORE::push' => '\@$' }, 'push just one', [ [ 1, 2 ], 3, 5 ], [ [ 1, 2, 3 ], 3, 5 ], [ 3 ] ],
+ [ { 'CORE::map' => '\&@' }, 'map', $m, $m, [ 11 .. 15 ] ],
+ [ 'main::mytrunc', 'truncate 1', [ 1 ], [ 1 ], [ undef, 1 ] ],
+ [ 'main::mytrunc', 'truncate 2', $t, $t, [ 2, 1 ] ],
+ [ 'main::mygrep1', 'grep1', $g, $g, [ 3 .. 5 ] ],
+ [ 'main::mygrep2', 'grep2', $g, $g, [ 3 .. 5 ] ],
+ [ 'main::modify', 'modify arguments', [ 1 ], [ 5 ], [ 1 ] ],
+);
+
+sub myit { push @{$_[0]->[2]}, 3; return 4 };
+if ($^V ge v5.10.0) {
+ set_prototype \&myit, '_';
+ push @tests, [ 'main::myit', '_ with argument',
+                [ [ 1, 2, [ ] ], 5 ],
+                [ [ 1, 2, [ 3 ] ], 5 ],
+                [ 4 ]
+              ];
+ push @tests, [ 'main::myit', '_ with no argument', [ ], [ 3 ], [ 4 ] ];
+}
+
+for (@tests) {
+ my $r = [ recall $_->[0], @{$_->[2]} ];
+ is_deeply($r, $_->[4], $_->[1] . ' return value');
+ is_deeply($_->[2], $_->[3], $_->[1] . ' arguments modification');
+}