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e8bb1f35df
There are a lot of changes in this commit: 1) Remove the `noAssert` argument from all read and write functions. 2) Improve the performance of all read floating point functions significantly. This is done by switching to TypedArrays as the write floating point write functions. 3) No implicit type coercion for offset and byteLength anymore. 4) Adds a lot of tests. 5) Moves the read and write functions to the internal buffer file to split the files in smaller chunks. 6) Reworked a lot of existing tests. 7) Improve the performane of all all read write functions by using a faster input validation and by improving function logic. 8) Significantly improved the performance of all read int functions. This is done by using a implementation without a loop. 9) Improved error handling. 10) Rename test file to use the correct subsystem. PR-URL: https://github.com/nodejs/node/pull/18395 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Anatoli Papirovski <apapirovski@mac.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
139 lines
3.7 KiB
JavaScript
139 lines
3.7 KiB
JavaScript
'use strict';
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require('../common');
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const assert = require('assert');
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// Test (64 bit) double
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const buffer = Buffer.allocUnsafe(8);
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buffer[0] = 0x55;
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buffer[1] = 0x55;
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buffer[2] = 0x55;
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buffer[3] = 0x55;
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buffer[4] = 0x55;
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buffer[5] = 0x55;
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buffer[6] = 0xd5;
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buffer[7] = 0x3f;
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assert.strictEqual(buffer.readDoubleBE(0), 1.1945305291680097e+103);
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assert.strictEqual(buffer.readDoubleLE(0), 0.3333333333333333);
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buffer[0] = 1;
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buffer[1] = 0;
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buffer[2] = 0;
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buffer[3] = 0;
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buffer[4] = 0;
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buffer[5] = 0;
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buffer[6] = 0xf0;
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buffer[7] = 0x3f;
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assert.strictEqual(buffer.readDoubleBE(0), 7.291122019655968e-304);
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assert.strictEqual(buffer.readDoubleLE(0), 1.0000000000000002);
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buffer[0] = 2;
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assert.strictEqual(buffer.readDoubleBE(0), 4.778309726801735e-299);
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assert.strictEqual(buffer.readDoubleLE(0), 1.0000000000000004);
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buffer[0] = 1;
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buffer[6] = 0;
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buffer[7] = 0;
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assert.strictEqual(buffer.readDoubleBE(0), 7.291122019556398e-304);
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assert.strictEqual(buffer.readDoubleLE(0), 5e-324);
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buffer[0] = 0xff;
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buffer[1] = 0xff;
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buffer[2] = 0xff;
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buffer[3] = 0xff;
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buffer[4] = 0xff;
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buffer[5] = 0xff;
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buffer[6] = 0x0f;
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buffer[7] = 0x00;
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assert.ok(Number.isNaN(buffer.readDoubleBE(0)));
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assert.strictEqual(buffer.readDoubleLE(0), 2.225073858507201e-308);
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buffer[6] = 0xef;
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buffer[7] = 0x7f;
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assert.ok(Number.isNaN(buffer.readDoubleBE(0)));
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assert.strictEqual(buffer.readDoubleLE(0), 1.7976931348623157e+308);
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buffer[0] = 0;
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buffer[1] = 0;
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buffer[2] = 0;
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buffer[3] = 0;
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buffer[4] = 0;
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buffer[5] = 0;
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buffer[6] = 0xf0;
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buffer[7] = 0x3f;
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assert.strictEqual(buffer.readDoubleBE(0), 3.03865e-319);
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assert.strictEqual(buffer.readDoubleLE(0), 1);
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buffer[6] = 0;
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buffer[7] = 0x40;
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assert.strictEqual(buffer.readDoubleBE(0), 3.16e-322);
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assert.strictEqual(buffer.readDoubleLE(0), 2);
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buffer[7] = 0xc0;
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assert.strictEqual(buffer.readDoubleBE(0), 9.5e-322);
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assert.strictEqual(buffer.readDoubleLE(0), -2);
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buffer[6] = 0x10;
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buffer[7] = 0;
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assert.strictEqual(buffer.readDoubleBE(0), 2.0237e-320);
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assert.strictEqual(buffer.readDoubleLE(0), 2.2250738585072014e-308);
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buffer[6] = 0;
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assert.strictEqual(buffer.readDoubleBE(0), 0);
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assert.strictEqual(buffer.readDoubleLE(0), 0);
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assert.ok(1 / buffer.readDoubleLE(0) >= 0);
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buffer[7] = 0x80;
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assert.strictEqual(buffer.readDoubleBE(0), 6.3e-322);
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assert.strictEqual(buffer.readDoubleLE(0), -0);
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assert.ok(1 / buffer.readDoubleLE(0) < 0);
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buffer[6] = 0xf0;
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buffer[7] = 0x7f;
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assert.strictEqual(buffer.readDoubleBE(0), 3.0418e-319);
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assert.strictEqual(buffer.readDoubleLE(0), Infinity);
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buffer[7] = 0xff;
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assert.strictEqual(buffer.readDoubleBE(0), 3.04814e-319);
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assert.strictEqual(buffer.readDoubleLE(0), -Infinity);
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['readDoubleLE', 'readDoubleBE'].forEach((fn) => {
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['', '0', null, undefined, {}, [], () => {}, true, false].forEach((off) => {
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assert.throws(
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() => buffer[fn](off),
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{ code: 'ERR_INVALID_ARG_TYPE' }
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);
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});
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[Infinity, -1, 1].forEach((offset) => {
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assert.throws(
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() => buffer[fn](offset),
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{
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code: 'ERR_OUT_OF_RANGE',
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name: 'RangeError [ERR_OUT_OF_RANGE]',
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message: 'The value of "offset" is out of range. ' +
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`It must be >= 0 and <= 0. Received ${offset}`
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});
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});
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assert.throws(
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() => Buffer.alloc(1)[fn](1),
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{
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code: 'ERR_BUFFER_OUT_OF_BOUNDS',
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name: 'RangeError [ERR_BUFFER_OUT_OF_BOUNDS]',
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message: 'Attempt to write outside buffer bounds'
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});
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[NaN, 1.01].forEach((offset) => {
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assert.throws(
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() => buffer[fn](offset),
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{
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code: 'ERR_OUT_OF_RANGE',
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name: 'RangeError [ERR_OUT_OF_RANGE]',
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message: 'The value of "offset" is out of range. ' +
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`It must be an integer. Received ${offset}`
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});
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});
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});
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