I've looked at DBD::mysql code and I cannot see anything that explains your "it's as if you actually passed".
Does it use SvPV(sv) without checking separate handling based on SvUTF8(sv)? It might do by using the default char* typemap (e.g. void xsfunc(char* s) { ... }).
As you can see, the following C function is equivalent to that code:
use strict;
use warnings;
use Test::More;
use Encode qw( is_utf8 encode_utf8 );
use Inline C => <<'__EOC__';
void candidate(SV* sv) {
dXSARGS;
STRLEN len;
char* buf = SvPV(sv, len);
SP[0] = sv_2mortal(newSVpvn(buf, len));
XSRETURN(1);
}
__EOC__
sub baseline { is_utf8($_[0]) ? encode_utf8($_[0]) : $_[0] }
sub _u { my ($s) = @_; utf8::upgrade($s); $s }
sub _d { my ($s) = @_; utf8::downgrade($s); $s }
sub printable { sprintf("%v04X", $_[0]) }
my @tests = (
[ '00-7F', "a" ],
[ '80-FF,UTF8=0', _d(chr(0xE9)) ],
[ '80-FF,UTF8=1', _u(chr(0xE9)) ],
[ '>FF', chr(0x2660) ],
);
plan tests => 0+@tests;
for (@tests) {
my ($test_name, $input) = @$_;
my $got = candidate($input);
my $expected = baseline($input);
#is($got, $expected, $test_name);
is(printable($got), printable($expected), $test_name);
}
1..4
ok 1 - 00-7F
ok 2 - 80-FF,UTF8=0
ok 3 - 80-FF,UTF8=1
ok 4 - >FF
I'm really interested in this from the point of another DBD maintainer.
Using the same configuration for all tests, can you roundtrip all of the strings mentioned earlier (as verified by is or eq)?
my @tests = (
[ '00-7F', "a" ],
[ '80-FF,UTF8=0', _d(chr(0xE9)) ],
[ '80-FF,UTF8=1', _u(chr(0xE9)) ],
[ '>FF', chr(0x2660) ],
);
plan tests => 0+@tests;
my $dbh = ... connect and setup as you wish ...
my $sth = $dbh->prepare('SELECT ?');
for (@tests) {
my ($test_name, $input) = @$_;
$sth->execute($input) or die;
my $row = $sth->fetch() or die;
$sth->finish() or die if $row;
my $got = $row->[0];
is(printable($got), printable($input), $test_name);
}
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.