d795301025
common.js needs to be loaded in all tests so that there is checking for variable leaks and possibly other things. However, it does not need to be assigned to a variable if nothing in common.js is referred to elsewhere in the test. The main tradeoff for this bit of code churn is that it gets the code base most of the way to being able to enable the no-unused-vars rule in eslint. (The non-tooling benefit is that it lessens cognitive load when reading tests as it is an immediate indication that none of the functions or properties in common.js will be used by the test.) PR-URL: https://github.com/nodejs/node/pull/4563 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
109 lines
3.2 KiB
JavaScript
109 lines
3.2 KiB
JavaScript
'use strict';
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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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