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121 lines
2.7 KiB
121 lines
2.7 KiB
require("../common");
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assert = require("assert");
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var Buffer = require('buffer').Buffer;
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var b = new Buffer(1024);
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console.log("b.length == " + b.length);
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assert.equal(1024, b.length);
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for (var i = 0; i < 1024; i++) {
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assert.ok(b[i] >= 0);
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b[i] = i % 256;
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}
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for (var i = 0; i < 1024; i++) {
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assert.equal(i % 256, b[i]);
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}
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var c = new Buffer(512);
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var copied = b.copy(c, 0, 0, 512);
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assert.equal(512, copied);
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for (var i = 0; i < c.length; i++) {
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print('.');
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assert.equal(i % 256, c[i]);
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}
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var asciiString = "hello world";
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var offset = 100;
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for (var j = 0; j < 500; j++) {
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for (var i = 0; i < asciiString.length; i++) {
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b[i] = asciiString.charCodeAt(i);
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}
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var asciiSlice = b.toString('ascii', 0, asciiString.length);
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assert.equal(asciiString, asciiSlice);
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var written = b.asciiWrite(asciiString, offset);
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assert.equal(asciiString.length, written);
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var asciiSlice = b.toString('ascii', offset, offset+asciiString.length);
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assert.equal(asciiString, asciiSlice);
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var sliceA = b.slice(offset, offset+asciiString.length);
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var sliceB = b.slice(offset, offset+asciiString.length);
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for (var i = 0; i < asciiString.length; i++) {
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assert.equal(sliceA[i], sliceB[i]);
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}
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// TODO utf8 slice tests
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}
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for (var j = 0; j < 100; j++) {
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var slice = b.slice(100, 150);
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assert.equal(50, slice.length);
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for (var i = 0; i < 50; i++) {
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assert.equal(b[100+i], slice[i]);
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}
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}
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// unpack
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var b = new Buffer(10);
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b[0] = 0x00;
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b[1] = 0x01;
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b[2] = 0x03;
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b[3] = 0x00;
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assert.deepEqual([0x0001], b.unpack('n', 0));
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assert.deepEqual([0x0001, 0x0300], b.unpack('nn', 0));
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assert.deepEqual([0x0103], b.unpack('n', 1));
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assert.deepEqual([0x0300], b.unpack('n', 2));
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assert.deepEqual([0x00010300], b.unpack('N', 0));
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assert.throws(function () {
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b.unpack('N', 8);
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});
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b[4] = 0xDE;
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b[5] = 0xAD;
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b[6] = 0xBE;
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b[7] = 0xEF;
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assert.deepEqual([0xDEADBEEF], b.unpack('N', 4));
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// Bug regression test
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var testValue = '\u00F6\u65E5\u672C\u8A9E'; // ö日本語
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var buffer = new Buffer(32);
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var size = buffer.utf8Write(testValue, 0);
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console.log('bytes written to buffer: ' + size);
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var slice = buffer.toString('utf8', 0, size);
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assert.equal(slice, testValue);
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// Test triple slice
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var a = new Buffer(8);
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for (var i = 0; i < 8; i++) a[i] = i;
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var b = a.slice(4,8);
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assert.equal(4, b[0]);
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assert.equal(5, b[1]);
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assert.equal(6, b[2]);
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assert.equal(7, b[3]);
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var c = b.slice(2 , 4);
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assert.equal(6, c[0]);
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assert.equal(7, c[1]);
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var d = new Buffer([23, 42, 255]);
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assert.equal(d.length, 3);
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assert.equal(d[0], 23);
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assert.equal(d[1], 42);
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assert.equal(d[2], 255);
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var e = new Buffer('über');
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assert.deepEqual(e, new Buffer([195, 188, 98, 101, 114]));
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var f = new Buffer('über', 'ascii');
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assert.deepEqual(f, new Buffer([252, 98, 101, 114]));
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