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|
#!/usr/bin/perl
use strict;
BEGIN { $^W = 1 }
use Test::More;
use Sub::Uplevel;
package Wrap;
use Sub::Uplevel;
sub wrap {
my ($n, $f, $depth, $up, @case) = @_;
if ($n > 1) {
$n--;
return wrap( $n, $f, $depth, $up, @case );
}
else {
return uplevel( $up , $f, $depth, $up, @case );
}
}
package Call;
sub recurse_call_check {
my ($depth, $up, @case) = @_;
if ( $depth ) {
$depth--;
my @result;
push @result, recurse_call_check($depth, $up, @case, 'Call' );
for my $n ( 1 .. $up ) {
push @result, Wrap::wrap( $n, \&recurse_call_check,
$depth, $n, @case,
$n == 1 ? "Wrap(Call)" : "Wrap(Call) x $n" ),
;
}
return @result;
}
else {
my (@uplevel_callstack, @real_callstack);
my $i = 0;
while ( defined( my $caller = caller($i++) ) ) {
push @uplevel_callstack, $caller;
}
$i = 0;
while ( defined( my $caller = CORE::caller($i++) ) ) {
push @real_callstack, $caller;
}
return [
join( q{, }, @case ),
join( q{, }, reverse @uplevel_callstack ),
join( q{, }, reverse @real_callstack ),
];
}
}
package main;
my $depth = 4;
my $up = 3;
my $cases = 104;
plan tests => $cases;
my @results = Call::recurse_call_check( $depth, $up, 'Call' );
is( scalar @results, $cases,
"Right number of cases"
);
my $expected = shift @results;
for my $got ( @results ) {
is( $got->[1], $expected->[1],
"Case: $got->[0]"
) or diag( "Real callers: $got->[2]" );
}
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