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>
53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
'use strict';
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require('../common');
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const assert = require('assert');
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const Buffer = require('buffer').Buffer;
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const LENGTH = 16;
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const ab = new ArrayBuffer(LENGTH);
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const dv = new DataView(ab);
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const ui = new Uint8Array(ab);
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const buf = new Buffer(ab);
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assert.ok(buf instanceof Buffer);
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// For backwards compatibility of old .parent property test that if buf is not
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// a slice then .parent should be undefined.
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assert.equal(buf.parent, undefined);
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assert.equal(buf.buffer, ab);
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assert.equal(buf.length, ab.byteLength);
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buf.fill(0xC);
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for (let i = 0; i < LENGTH; i++) {
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assert.equal(ui[i], 0xC);
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ui[i] = 0xF;
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assert.equal(buf[i], 0xF);
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}
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buf.writeUInt32LE(0xF00, 0);
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buf.writeUInt32BE(0xB47, 4);
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buf.writeDoubleLE(3.1415, 8);
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assert.equal(dv.getUint32(0, true), 0xF00);
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assert.equal(dv.getUint32(4), 0xB47);
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assert.equal(dv.getFloat64(8, true), 3.1415);
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// Now test protecting users from doing stupid things
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assert.throws(function() {
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function AB() { }
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AB.__proto__ = ArrayBuffer;
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AB.prototype.__proto__ = ArrayBuffer.prototype;
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new Buffer(new AB());
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}, TypeError);
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// write{Double,Float}{LE,BE} with noAssert should not crash, cf. #3766
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var b = new Buffer(1);
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b.writeFloatLE(11.11, 0, true);
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b.writeFloatBE(11.11, 0, true);
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b.writeDoubleLE(11.11, 0, true);
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b.writeDoubleBE(11.11, 0, true);
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