New file |
0,0 → 1,54 |
if(!dojo._hasResource["dojox.encoding.tests.lzw"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. |
dojo._hasResource["dojox.encoding.tests.lzw"] = true; |
dojo.provide("dojox.encoding.tests.lzw"); |
dojo.require("dojox.encoding.lzw"); |
dojo.require("dojox.encoding.bits"); |
|
(function(){ |
var msg1 = "The rain in Spain falls mainly on the plain."; |
var msg2 = "The rain in Spain falls mainly on the plain.1"; |
var msg3 = "The rain in Spain falls mainly on the plain.ab"; |
var msg4 = "The rain in Spain falls mainly on the plain.!@#"; |
var dc = dojox.encoding, dcb = dc.bits, dcl = dc.lzw; |
|
var s2b = function(s){ |
var b = []; |
for(var i = 0; i < s.length; ++i){ |
b.push(s.charCodeAt(i)); |
} |
return b; |
}; |
|
var b2s = function(b){ |
var s = []; |
dojo.forEach(b, function(c){ s.push(String.fromCharCode(c)); }); |
return s.join(""); |
}; |
|
var encode = function(msg){ |
var x = new dcb.OutputStream(), encoder = new dcl.Encoder(128); |
dojo.forEach(s2b(msg), function(v){ encoder.encode(v, x); }); |
encoder.flush(x); |
console.debug("bits =", x.getWidth()); |
return x.getBuffer(); |
}; |
|
var decode = function(n, buf){ |
var x = new dcb.InputStream(buf, buf.length * 8), decoder = new dcl.Decoder(128), t = [], w = 0; |
while(w < n){ |
var v = decoder.decode(x); |
t.push(v); |
w += v.length; |
} |
return t.join(""); |
}; |
|
tests.register("dojox.encoding.tests.lzw", [ |
function testLzwMsg1(t){ t.assertEqual(msg1, decode(msg1.length, encode(msg1))); }, |
function testLzwMsg2(t){ t.assertEqual(msg2, decode(msg2.length, encode(msg2))); }, |
function testLzwMsg3(t){ t.assertEqual(msg3, decode(msg3.length, encode(msg3))); }, |
function testLzwMsg4(t){ t.assertEqual(msg4, decode(msg4.length, encode(msg4))); } |
]); |
})(); |
|
} |