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use Hook::LexWrap;
print "1..54\n";
sub ok { print "ok $_[0]\n" }
sub fail(&) { print "not " if $_[0]->() }
sub actual { ok $_[0]; }
actual 1;
{
my $lexical = wrap actual,
pre => sub { ok 2 },
post => sub { ok 4 };
wrap actual, pre => sub { $_[0]++ };
my $x = 2;
actual $x;
1; # delay destruction
}
wrap *main::actual, post => sub { ok 6 };
actual my $x = 4;
no warnings qw/bareword reserved/;
eval { wrap other, pre => sub { print "not ok 7\n" } } or ok 7;
eval { wrap actual, pre => 1 } and print "not ";
ok 8;
eval { wrap actual, post => [] } and print "not ";
ok 9;
BEGIN { *{CORE::GLOBAL::sqrt} = sub { CORE::sqrt(shift) } }
wrap 'CORE::GLOBAL::sqrt', pre => sub { $_[0]++ };
$x = 99;
ok sqrt($x);
sub temp { ok $_[0] };
my $sub = wrap \&temp,
pre => sub { ok $_[0]-1 },
post => sub { ok $_[0]+1 };
$sub->(12);
temp(14);
{
local $SIG{__WARN__} = sub { ok 15 };
eval { wrap \&temp, pre => sub { ok $_[0]-1 }; 1 } and ok 16;
}
use Carp;
sub wrapped_callee {
return join '|', caller;
}
wrap wrapped_callee,
pre =>sub{
print "not " unless $_[0] eq join '|', caller;
ok 17
},
post=>sub{
print "not " unless $_[0] eq join '|', caller;
ok 18
};
sub raw_callee {
return join '|', caller;
}
print "not " unless wrapped_callee(scalar raw_callee); ok 19;
sub scalar_return { return 'string' }
wrap scalar_return, post => sub { $_[-1] .= 'ent' };
print "not " unless scalar_return eq 'stringent'; ok 20;
sub list_return { return (0..9) }
wrap list_return, post => sub { @{$_[-1]} = reverse @{$_[-1]} };
my @result = list_return;
for (0..9) {
print "not " and last unless $_ + $result[$_] == 9;
}
ok 21;
sub shorted_scalar { return 2 };
wrap shorted_scalar, pre => sub { $_[-1] = 1 };
fail { shorted_scalar != 1 }; ok 22;
sub shorted_list { return (2..9) };
{
my $lexical = wrap shorted_list, pre => sub { $_[-1] = [1..9] };
fail { (shorted_list)[0] != 1 }; ok 23;
}
{
my $lexical = wrap shorted_list, pre => sub { $_[-1] = 1 };
fail { (shorted_list)[0] != 1 }; ok 24;
}
{
my $lexical = wrap shorted_list, pre => sub { @{$_[-1]} = (1..9) };
fail { (shorted_list)[0] != 1 }; ok 25;
}
{
my $lexical = wrap shorted_list, pre => sub { @{$_[-1]} = [1..9] };
fail { (shorted_list)[0]->[0] != 1 }; ok 26;
}
{
my $lexical = wrap shorted_list, post => sub { $_[-1] = [1..9] };
fail { (shorted_list)[0] != 1 }; ok 27;
}
{
my $lexical = wrap shorted_list, post => sub { $_[-1] = 1 };
fail { (shorted_list)[0] != 1 }; ok 28;
}
{
my $lexical = wrap shorted_list, post => sub { @{$_[-1]} = (1..9) };
fail { (shorted_list)[0] != 1 }; ok 29;
}
{
my $lexical = wrap shorted_list, post => sub { @{$_[-1]} = [1..9] };
fail { (shorted_list)[0]->[0] != 1 }; ok 30;
}
sub howmany { ok 32 if @_ == 3 }
wrap howmany,
pre => sub { ok 31 if @_ == 4 },
post => sub { ok 33 if @_ == 4 };
howmany(1..3);
{
no warnings 'uninitialized';
sub wanted {
my $expected = $_[3];
print 'not ' unless defined wantarray == defined $expected
&& wantarray eq $expected;
ok $_[1]
}
wrap wanted,
pre => sub {
my $expected = $_[3];
print 'not ' unless defined wantarray == defined $expected
&& wantarray eq $expected;
ok $_[0]
},
post => sub {
my $expected = $_[3];
print 'not ' unless defined wantarray == defined $expected
&& wantarray eq $expected;
ok $_[2]
};
my @array = wanted(34..36, 1);
my $scalar = wanted(37..39, "");
wanted(40..42,undef);
}
sub caller_test {
print "not " unless (caller 0)[3] eq 'main::caller_test'; ok $_[0];
print "not " unless (caller 1)[3] eq 'main::caller_outer'; ok $_[0]+1;
print "not " unless (caller 2)[3] eq 'main::wrapped'; ok $_[0]+2;
print "not " unless (caller 3)[3] eq 'main::inner'; ok $_[0]+3;
print "not " unless (caller 4)[3] eq 'main::middle'; ok $_[0]+4;
print "not " unless (caller 5)[3] eq 'main::outer'; ok $_[0]+5;
}
sub caller_outer {
caller_test(@_);
}
sub wrapped {
caller_outer(@_);
}
sub outer { middle(@_) }
sub middle { inner(@_) }
sub inner { wrapped(@_) }
outer(43..48);
wrap wrapped,
pre => sub {},
post => sub {};
wrap wrapped,
pre => sub {},
post => sub {};
wrap wrapped,
pre => sub {},
post => sub {};
outer(49..54);
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