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#!./perl -w
# use strict;
print "1..26\n";
my $test = 1;
sub ok {
my ($pass, $wrong, $err) = @_;
if ($pass) {
print "ok $test\n";
$test = $test + 1; # Would be doubleplusbad to use ++ in the ++ test.
return 1;
} else {
if ($err) {
chomp $err;
print "not ok $test # $err\n";
} else {
if (defined $wrong) {
$wrong = ", got $wrong";
} else {
$wrong = '';
}
printf "not ok $test # line %d$wrong\n", (caller)[2];
}
}
$test = $test + 1;
return;
}
# Verify that addition/subtraction properly upgrade to doubles.
# These tests are only significant on machines with 32 bit longs,
# and two's complement negation, but shouldn't fail anywhere.
my $a = 2147483647;
my $c=$a++;
ok ($a == 2147483648, $a);
$a = 2147483647;
$c=++$a;
ok ($a == 2147483648, $a);
$a = 2147483647;
$a=$a+1;
ok ($a == 2147483648, $a);
$a = -2147483648;
$c=$a--;
ok ($a == -2147483649, $a);
$a = -2147483648;
$c=--$a;
ok ($a == -2147483649, $a);
$a = -2147483648;
$a=$a-1;
ok ($a == -2147483649, $a);
$a = 2147483648;
$a = -$a;
$c=$a--;
ok ($a == -2147483649, $a);
$a = 2147483648;
$a = -$a;
$c=--$a;
ok ($a == -2147483649, $a);
$a = 2147483648;
$a = -$a;
$a=$a-1;
ok ($a == -2147483649, $a);
$a = 2147483648;
$b = -$a;
$c=$b--;
ok ($b == -$a-1, $a);
$a = 2147483648;
$b = -$a;
$c=--$b;
ok ($b == -$a-1, $a);
$a = 2147483648;
$b = -$a;
$b=$b-1;
ok ($b == -(++$a), $a);
$a = undef;
ok ($a++ eq '0', do { $a=undef; $a++ }, "postinc undef returns '0'");
$a = undef;
ok (!defined($a--), do { $a=undef; $a-- }, "postdec undef returns undef");
# Verify that shared hash keys become unshared.
sub check_same {
my ($orig, $suspect) = @_;
my $fail;
while (my ($key, $value) = each %$suspect) {
if (exists $orig->{$key}) {
if ($orig->{$key} ne $value) {
print "# key '$key' was '$orig->{$key}' now '$value'\n";
$fail = 1;
}
} else {
print "# key '$key' is '$orig->{$key}', unexpect.\n";
$fail = 1;
}
}
foreach (keys %$orig) {
next if (exists $suspect->{$_});
print "# key '$_' was '$orig->{$_}' now missing\n";
$fail = 1;
}
ok (!$fail);
}
my (%orig) = my (%inc) = my (%dec) = my (%postinc) = my (%postdec)
= (1 => 1, ab => "ab");
my %up = (1=>2, ab => 'ac');
my %down = (1=>0, ab => -1);
foreach (keys %inc) {
my $ans = $up{$_};
my $up;
eval {$up = ++$_};
ok ((defined $up and $up eq $ans), $up, $@);
}
check_same (\%orig, \%inc);
foreach (keys %dec) {
my $ans = $down{$_};
my $down;
eval {$down = --$_};
ok ((defined $down and $down eq $ans), $down, $@);
}
check_same (\%orig, \%dec);
foreach (keys %postinc) {
my $ans = $postinc{$_};
my $up;
eval {$up = $_++};
ok ((defined $up and $up eq $ans), $up, $@);
}
check_same (\%orig, \%postinc);
foreach (keys %postdec) {
my $ans = $postdec{$_};
my $down;
eval {$down = $_--};
ok ((defined $down and $down eq $ans), $down, $@);
}
check_same (\%orig, \%postdec);
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