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37ee43efd5
String concatenation in the assert messages has drastic impact on test
runtime. Removal of these messages is unlikely to affect debugging if
any breaking changes are made.
Previous time to run:
$ time ./iojs test/parallel/test-stringbytes-external.js
real 0m2.321s
user 0m2.256s
sys 0m0.092s
With fix:
$ time ./iojs test/parallel/test-stringbytes-external.js
real 0m0.518s
user 0m0.508s
sys 0m0.008s
PR-URL: https://github.com/nodejs/node/pull/2544
Reviewed-By: trevnorris - Trevor Norris <trev.norris@gmail.com>
Reviewed-By: thefourtheye - Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
110 lines
3.2 KiB
JavaScript
110 lines
3.2 KiB
JavaScript
'use strict';
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var common = require('../common');
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var assert = require('assert');
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// minimum string size to overflow into external string space
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var EXTERN_APEX = 0xFBEE9;
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// manually controlled string for checking binary output
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var ucs2_control = 'a\u0000';
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var write_str = 'a';
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// first do basic checks
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var b = new Buffer(write_str, 'ucs2');
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var c = b.toString('binary');
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assert.equal(b[0], 0x61);
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assert.equal(b[1], 0);
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assert.equal(ucs2_control, c);
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// now create big strings
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var size = 1 + (1 << 20);
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write_str = Array(size).join(write_str);
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ucs2_control = Array(size).join(ucs2_control);
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// check resultant buffer and output string
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var b = new Buffer(write_str, 'ucs2');
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// check fist Buffer created from write string
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for (var i = 0; i < b.length; i += 2) {
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assert.equal(b[i], 0x61);
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assert.equal(b[i + 1], 0);
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}
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// create another string to create an external string
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var b_bin = b.toString('binary');
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var b_ucs = b.toString('ucs2');
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// check control against external binary string
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assert.equal(ucs2_control, b_bin);
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// create buffer copy from external
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var c_bin = new Buffer(b_bin, 'binary');
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var c_ucs = new Buffer(b_ucs, 'ucs2');
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// make sure they're the same length
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assert.equal(c_bin.length, c_ucs.length);
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// make sure Buffers from externals are the same
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for (var i = 0; i < c_bin.length; i++) {
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assert.equal(c_bin[i], c_ucs[i]);
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}
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// check resultant strings
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assert.equal(c_bin.toString('ucs2'), c_ucs.toString('ucs2'));
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assert.equal(c_bin.toString('binary'), ucs2_control);
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assert.equal(c_ucs.toString('binary'), ucs2_control);
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// now let's test BASE64 and HEX ecoding/decoding
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var RADIOS = 2;
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var PRE_HALF_APEX = Math.ceil(EXTERN_APEX / 2) - RADIOS;
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var PRE_3OF4_APEX = Math.ceil((EXTERN_APEX / 4) * 3) - RADIOS;
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(function() {
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for (var j = 0; j < RADIOS * 2; j += 1) {
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var datum = b;
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var slice = datum.slice(0, PRE_HALF_APEX + j);
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var slice2 = datum.slice(0, PRE_HALF_APEX + j + 2);
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var pumped_string = slice.toString('hex');
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var pumped_string2 = slice2.toString('hex');
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var decoded = new Buffer(pumped_string, 'hex');
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// the string are the same?
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for (var k = 0; k < pumped_string.length; ++k) {
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assert.equal(pumped_string[k], pumped_string2[k]);
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}
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// the recoded buffer is the same?
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for (var i = 0; i < decoded.length; ++i) {
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assert.equal(datum[i], decoded[i]);
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}
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}
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})();
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(function() {
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for (var j = 0; j < RADIOS * 2; j += 1) {
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var datum = b;
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var slice = datum.slice(0, PRE_3OF4_APEX + j);
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var slice2 = datum.slice(0, PRE_3OF4_APEX + j + 2);
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var pumped_string = slice.toString('base64');
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var pumped_string2 = slice2.toString('base64');
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var decoded = new Buffer(pumped_string, 'base64');
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// the string are the same?
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for (var k = 0; k < pumped_string.length - 3; ++k) {
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assert.equal(pumped_string[k], pumped_string2[k]);
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}
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// the recoded buffer is the same?
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for (var i = 0; i < decoded.length; ++i) {
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assert.equal(datum[i], decoded[i]);
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}
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}
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})();
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// https://github.com/nodejs/node/issues/1024
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(function() {
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var a = Array(1 << 20).join('x');
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var b = Buffer(a, 'ucs2').toString('ucs2');
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var c = Buffer(b, 'utf8').toString('utf8');
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assert.equal(a.length, b.length);
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assert.equal(b.length, c.length);
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assert.equal(a, b);
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assert.equal(b, c);
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})();
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