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71 lines
2.0 KiB
71 lines
2.0 KiB
require('../common');
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var Utf8Decoder = require('utf8decoder').Utf8Decoder,
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Buffer = require('buffer').Buffer,
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decoder = new Utf8Decoder(),
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buffer,
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onStringCalled = 0;
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decoder.onString = function(str) {
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onStringCalled++;
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assert.deepEqual(str, buffer.toString());
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};
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buffer = new Buffer('$');
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decoder.write(buffer);
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assert.equal(onStringCalled, 1);
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buffer = new Buffer('¢');
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decoder.write(buffer.slice(0, 1));
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decoder.write(buffer.slice(1, 2));
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assert.equal(onStringCalled, 2);
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buffer = new Buffer('€');
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decoder.write(buffer.slice(0, 1));
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decoder.write(buffer.slice(1, 2));
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decoder.write(buffer.slice(2, 3));
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assert.equal(onStringCalled, 3);
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buffer = new Buffer([0xF0, 0xA4, 0xAD, 0xA2]);
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decoder.write(buffer.slice(0, 1));
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decoder.write(buffer.slice(1, 2));
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decoder.write(buffer.slice(2, 3));
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decoder.write(buffer.slice(3, 4));
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assert.equal(onStringCalled, 4);
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// A mixed ascii and non-ascii string
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// Test stolen from deps/v8/test/cctest/test-strings.cc
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// U+02E4 -> CB A4
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// U+0064 -> 64
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// U+12E4 -> E1 8B A4
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// U+0030 -> 30
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// U+3045 -> E3 81 85
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expected = "\u02e4\u0064\u12e4\u0030\u3045";
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buffer = new Buffer([0xCB, 0xA4, 0x64, 0xE1, 0x8B, 0xA4, 0x30, 0xE3, 0x81, 0x85]);
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charLengths = [0, 0, 1, 2, 2, 2, 3, 4, 4, 4, 5, 5];
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// Split the buffer into 3 segments
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// |----|------|-------|
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// 0 i j buffer.length
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// Scan through every possible 3 segment combination
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// and make sure that the string is always parsed.
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print('scanning ');
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for (var j = 2; j < buffer.length; j++) {
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for (var i = 1; i < j; i++) {
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var decoder = new Utf8Decoder();
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var sum = "";
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decoder.onString = function (s) { sum += s; };
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decoder.write(buffer.slice(0, i));
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// just check that we've received the right amount
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// after the first write
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assert.equal(charLengths[i], sum.length);
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decoder.write(buffer.slice(i, j));
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decoder.write(buffer.slice(j, buffer.length));
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assert.equal(expected, sum);
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print(".");
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}
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}
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puts(" crayon!");
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