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|
# see https://github.com/PerlFFI/FFI-Platypus/issues/85
use if $^O ne 'MSWin32' || $] >= 5.018, 'open', ':std', ':encoding(utf8)';
use Test2::V0 -no_srand => 1;
use Encode qw( decode );
use FFI::Platypus::Buffer;
use FFI::Platypus::Buffer qw( scalar_to_pointer grow set_used_length window );
use utf8;
use B;
subtest simple => sub {
my $orig = 'me grimlock king';
my($ptr, $size) = scalar_to_buffer($orig);
ok $ptr, "ptr = $ptr";
my $ptr2 = scalar_to_pointer($orig);
is $ptr2, $ptr, "scalar to pointer matches";
is $size, 16, 'size = 16';
my $scalar = buffer_to_scalar($ptr, $size);
is $scalar, 'me grimlock king', "scalar = $scalar";
};
subtest unicode => sub {
my $orig = 'привет';
my($ptr, $size) = scalar_to_buffer($orig);
ok $ptr, "ptr = $ptr";
ok $size, "size = $size";
my $scalar = decode('UTF-8', buffer_to_scalar($ptr, $size));
is $scalar, 'привет', "scalar = $scalar";
};
subtest grow => sub {
my $orig = 'me grimlock king';
my($ptr, $size) = scalar_to_buffer($orig);
my $sv = B::svref_2object( \$orig );
is $sv->CUR, $size, "B::PV returns consistent string length";
my $required = 100;
ok $sv->LEN < $required, "initial buffer size is smaler than required";
subtest 'default options' => sub {
my $str = $orig;
grow( $str, $required );
my $sv = B::svref_2object( \$str );
ok $sv->LEN >= $required, "buffer grew as expected";
isnt substr( $str, 0, length($orig) ), $orig, "original contents cleared";
is $sv->CUR, $required, "string length == requested buffer length";
};
subtest clear => sub {
subtest 'on' => sub {
my $str = $orig;
grow( $str, $required, { clear => 1, set_length => 0 } );
my $sv = B::svref_2object( \$str );
ok $sv->LEN >= $required, "buffer grew as expected";
is $sv->CUR, 0, "buffer contents cleared";
};
subtest 'off' => sub {
my $str = $orig;
grow( $str, $required, { clear => 0, set_length => 0 } );
my $sv = B::svref_2object( \$str );
ok $sv->LEN >= $required, "buffer grew as expected";
is $str, $orig, "buffer contents not cleared";
};
};
subtest set_length => sub {
subtest 'on' => sub {
my $str = $orig;
grow( $str, $required, { set_length => 1 } );
my $sv = B::svref_2object( \$str );
ok $sv->LEN >= $required, "buffer grew as expected";
is $sv->CUR, $required, "buffer length set";
};
subtest 'off' => sub {
my $str = $orig;
grow( $str, $required, { set_length => 0, clear => 1 } );
my $sv = B::svref_2object( \$str );
ok $sv->LEN >= $required, "buffer grew as expected";
is $sv->CUR, 0, "buffer length not cleared";
};
};
subtest "bad option" => sub {
my $str;
eval{ grow( $str, 100, { 'bad option' => 1 } ) };
my $err = $@;
like ( $err, qr/bad option/, "croaked" );
};
subtest "fail on reference" => sub {
my $ref = \$orig;
eval { grow( $ref, 0 ); };
my $err = $@;
like ( $err, qr/must be a scalar/, "croaked" );
};
subtest '$str = undef' => sub {
my $str;
grow( $str, $required );
my $sv = B::svref_2object( \$str );
ok $sv->LEN >= $required, "buffer grew as expected";
};
subtest 'undef' => sub {
eval { grow( undef, $required ) };
my $err = $@;
like ( $err, qr/read-only/, "croaked" );
};
};
subtest set_used_length => sub {
my $orig = 'me grimlock king';
subtest 'length < max' => sub {
my $str = $orig;
my $len = set_used_length( $str, 3 );
is( $len, 3, "requested length" );
is( $str, "me ", "requested string" );
};
subtest 'length == max' => sub {
my $str = $orig;
my $sv = B::svref_2object( \$str );
my $len = set_used_length( $str, $sv->LEN );
is( $len, $sv->LEN, "requested length" );
};
subtest 'length > max' => sub {
my $str = $orig;
my $sv = B::svref_2object( \$str );
my $len = set_used_length( $str, $sv->LEN + 10);
is( $len, $sv->LEN, "maxed out length" );
};
subtest "fail on reference" => sub {
my $ref = \$orig;
eval { set_used_length( $ref, 0 ); };
my $err = $@;
like ( $err, qr/must be a scalar/, "croaked" );
};
{
my $todo = todo "is set_used_length undef behavior correct?";
subtest '$str = undef' => sub {
my $str;
my $len = set_used_length( $str, 100);
my $sv = B::svref_2object( \$str );
is ( $len, 0, "no added length" );
is( $len, $sv->LEN, "maxed out length" );
};
}
subtest 'undef' => sub {
eval { set_used_length( undef, 0 ) };
my $err = $@;
like ( $err, qr/read-only/, "croaked" );
};
};
subtest 'hardwire' => sub {
# hardwire is experimental, do not use outside
# of testing
subtest 'ascii' => sub {
my $stuff = "my stuff";
my($ptr, $len) = scalar_to_buffer $stuff;
my $ro;
window $ro, $ptr, $len;
is($ro, "my stuff");
is(length($ro), 8);
is([scalar_to_buffer $ro], [$ptr,$len]);
local $@ = '';
eval { $ro .= "foo" };
like "$@", qr/Modification of a read-only value attempted/;
is([scalar_to_buffer $ro], [$ptr,$len]);
};
subtest 'unicode' => sub {
my $stuff = "привет";
my($ptr, $len) = scalar_to_buffer $stuff;
my $ro;
window $ro, $ptr, $len, 1;
is($ro, "привет");
is(length($ro), 6);
is([scalar_to_buffer $ro], [$ptr,$len]);
local $@ = '';
eval { $ro .= "foo" };
like "$@", qr/Modification of a read-only value attempted/;
is([scalar_to_buffer $ro], [$ptr,$len]);
};
subtest 'strlen' => sub {
my $stuff = "foo\0bar";
my($ptr) = scalar_to_pointer $stuff;
my $ro;
window $ro, $ptr;
is($ro, "foo");
is(length($ro), 3);
is([scalar_to_pointer $ro], [$ptr]);
};
};
done_testing;
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