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#!/usr/bin/perl
use strict;
use warnings;
use Test::More;
use Test::Fatal;
BEGIN {
use_ok('Web::Machine::Util::ContentNegotiation', 'choose_media_type');
}
ok(!defined( choose_media_type( [], '*/*' ) ), '... got nothing back');
ok(!defined( choose_media_type( [ "text/html" ], 'application/json' ) ), '... got nothing back');
# Examples from http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
=pod
The example
Accept: audio/*; q=0.2, audio/basic
SHOULD be interpreted as "I prefer audio/basic, but send me any
audio type if it is the best available after an 80% mark-down
in quality."
=cut
is(
choose_media_type(
["audio/basic", "audio/oog"],
"audio/*; q=0.2, audio/basic"
),
'audio/basic',
'... got the right media type back (prefer audio/basic)'
);
is(
choose_media_type(
["audio/mp3", "audio/oog"],
"audio/*; q=0.2, audio/basic"
),
'audio/mp3',
'... got the right media type back (prefer audio/* and choose audio/mp3)'
);
=pod
A more elaborate example is
Accept: text/plain; q=0.5, text/html,
text/x-dvi; q=0.8, text/x-c
Verbally, this would be interpreted as "text/html and text/x-c
are the preferred media types, but if they do not exist, then
send the text/x-dvi entity, and if that does not exist, send
the text/plain entity."
=cut
is(
choose_media_type(
["text/html", "text/plain"],
"text/plain; q=0.5, text/html, text/x-dvi; q=0.8, text/x-c"
),
'text/html',
'... got the right media type back (prefer text/html over lesser quality options)'
);
is(
choose_media_type(
["text/html", "text/x-dvi"],
"text/plain; q=0.5, text/html, text/x-dvi; q=0.8, text/x-c"
),
'text/html',
'... got the right media type back (prefer text/html over lesser quality options)'
);
is(
choose_media_type(
["text/x-c", "text/plain"],
"text/plain; q=0.5, text/html, text/x-dvi; q=0.8, text/x-c"
),
'text/x-c',
'... got the right media type back (prefer text/x-c over lesser quality options)'
);
is(
choose_media_type(
["text/x-c", "text/x-dvi"],
"text/plain; q=0.5, text/html, text/x-dvi; q=0.8, text/x-c"
),
'text/x-c',
'... got the right media type back (prefer text/x-c over lesser quality options)'
);
is(
choose_media_type(
["text/x-c", "text/html"],
"text/plain; q=0.5, text/html, text/x-dvi; q=0.8, text/x-c"
),
'text/html',
'... got the right media type back (prefer text/html over text/x-c)'
);
is(
choose_media_type(
["text/sgml", "text/x-dvi"],
"text/plain; q=0.5, text/html, text/x-dvi; q=0.8, text/x-c"
),
'text/x-dvi',
'... got the right media type back (accept text/x-dvi)'
);
is(
choose_media_type(
["text/sgml", "text/plain", "text/x-dvi"],
"text/plain; q=0.5, text/html, text/x-dvi; q=0.8, text/x-c"
),
'text/x-dvi',
'... got the right media type back (prefer text/x-dvi over text/plain)'
);
is(
choose_media_type(
["text/sgml", "text/plain", ],
"text/plain; q=0.5, text/html, text/x-dvi; q=0.8, text/x-c"
),
'text/plain',
'... got the right media type back (accept text/plain)'
);
=pod
Media ranges can be overridden by more specific media ranges
or specific media types. If more than one media range applies
to a given type, the most specific reference has precedence.
For example,
Accept: text/*, text/html, text/html;level=1, */*
have the following precedence:
1) text/html;level=1
2) text/html
3) text/*
4) */*
=cut
is(
choose_media_type(
["text/html", "text/html;level=1" ],
"text/*, text/html, text/html;level=1, */*"
),
'text/html; level="1"',
'... got the right media type back (prefer text/html;level=1 because it is more specific)'
);
is(
choose_media_type(
["text/plain", "text/html" ],
"text/*, text/html, text/html;level=1, */*"
),
'text/html',
'... got the right media type back (prefer text/html to other less specific options)'
);
# Examples from webmachine-ruby
is(
choose_media_type(
["text/html", "application/xml"],
"application/xml, text/html, */*"
),
'application/xml',
'... got the right media type back (choose application/xml because of header ordering)'
);
is(
choose_media_type(
["text/html", "text/html;charset=iso8859-1" ],
"text/html;charset=iso8859-1, application/xml"
),
'text/html; charset="iso8859-1"',
'... got the right media type back (choose the more specific text/html;charset=iso8859-1)'
);
is(
choose_media_type(
["application/json;v=3;foo=bar", "application/json;v=2"],
"text/html, application/json"
),
'application/json; v="3"; foo="bar"',
'... got the right media type back (choose application/json;v=3;foo=bar because of preference ordering)'
);
is(
choose_media_type(
["text/html", "application/xml"],
"application/xml;q=0.7, text/html, */*"
),
'text/html',
'... got the right media type back (choose text/html because of quality level and preference ordering)'
);
is(
choose_media_type(
["text/html", "application/xml"],
"bah"
),
undef,
'... got no media type back'
);
done_testing;
|
