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102 lines
4.4 KiB
102 lines
4.4 KiB
'use strict';
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require('../common');
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const assert = require('assert');
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// testing buffer write functions
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const outOfRange = /^RangeError\b.*\bIndex out of range$/;
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function write(funx, args, result, res) {
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{
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const buf = Buffer.alloc(9);
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assert.strictEqual(buf[funx](...args), result);
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assert.deepStrictEqual(buf, res);
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}
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writeInvalidOffset(-1);
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writeInvalidOffset(9);
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if (!/Int/.test(funx)) {
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assert.throws(
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() => Buffer.alloc(9)[funx].apply(new Map(), args),
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/^TypeError: argument should be a Buffer$/
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);
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}
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{
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const buf2 = Buffer.alloc(9);
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assert.strictEqual(buf2[funx](...args, true), result);
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assert.deepStrictEqual(buf2, res);
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}
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function writeInvalidOffset(offset) {
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const newArgs = Array.from(args);
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newArgs[1] = offset;
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assert.throws(() => Buffer.alloc(9)[funx](...newArgs), outOfRange);
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const buf = Buffer.alloc(9);
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buf[funx](...newArgs, true);
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assert.deepStrictEqual(buf, Buffer.alloc(9));
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}
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}
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write('writeInt8', [1, 0], 1, Buffer.from([1, 0, 0, 0, 0, 0, 0, 0, 0]));
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write('writeIntBE', [1, 1, 4], 5, Buffer.from([0, 0, 0, 0, 1, 0, 0, 0, 0]));
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write('writeIntLE', [1, 1, 4], 5, Buffer.from([0, 1, 0, 0, 0, 0, 0, 0, 0]));
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write('writeInt16LE', [1, 1], 3, Buffer.from([0, 1, 0, 0, 0, 0, 0, 0, 0]));
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write('writeInt16BE', [1, 1], 3, Buffer.from([0, 0, 1, 0, 0, 0, 0, 0, 0]));
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write('writeInt32LE', [1, 1], 5, Buffer.from([0, 1, 0, 0, 0, 0, 0, 0, 0]));
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write('writeInt32BE', [1, 1], 5, Buffer.from([0, 0, 0, 0, 1, 0, 0, 0, 0]));
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write('writeUInt8', [1, 0], 1, Buffer.from([1, 0, 0, 0, 0, 0, 0, 0, 0]));
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write('writeUIntLE', [1, 1, 4], 5, Buffer.from([0, 1, 0, 0, 0, 0, 0, 0, 0]));
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write('writeUIntBE', [1, 1, 4], 5, Buffer.from([0, 0, 0, 0, 1, 0, 0, 0, 0]));
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write('writeUInt16LE', [1, 1], 3, Buffer.from([0, 1, 0, 0, 0, 0, 0, 0, 0]));
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write('writeUInt16BE', [1, 1], 3, Buffer.from([0, 0, 1, 0, 0, 0, 0, 0, 0]));
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write('writeUInt32LE', [1, 1], 5, Buffer.from([0, 1, 0, 0, 0, 0, 0, 0, 0]));
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write('writeUInt32BE', [1, 1], 5, Buffer.from([0, 0, 0, 0, 1, 0, 0, 0, 0]));
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write('writeDoubleBE', [1, 1], 9, Buffer.from([0, 63, 240, 0, 0, 0, 0, 0, 0]));
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write('writeDoubleLE', [1, 1], 9, Buffer.from([0, 0, 0, 0, 0, 0, 0, 240, 63]));
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write('writeFloatBE', [1, 1], 5, Buffer.from([0, 63, 128, 0, 0, 0, 0, 0, 0]));
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write('writeFloatLE', [1, 1], 5, Buffer.from([0, 0, 0, 128, 63, 0, 0, 0, 0]));
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function writePartial(funx, args, result, res) {
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assert.throws(() => Buffer.alloc(9)[funx](...args), outOfRange);
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const buf = Buffer.alloc(9);
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assert.strictEqual(buf[funx](...args, true), result);
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assert.deepStrictEqual(buf, res);
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}
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// Test partial writes (cases where the buffer isn't large enough to hold the
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// entire value, but is large enough to hold parts of it).
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writePartial('writeIntBE', [0x0eadbeef, 6, 4], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0x0e, 0xad, 0xbe]));
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writePartial('writeIntLE', [0x0eadbeef, 6, 4], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0xef, 0xbe, 0xad]));
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writePartial('writeInt16BE', [0x1234, 8], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0, 0, 0x12]));
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writePartial('writeInt16LE', [0x1234, 8], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0, 0, 0x34]));
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writePartial('writeInt32BE', [0x0eadbeef, 6], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0x0e, 0xad, 0xbe]));
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writePartial('writeInt32LE', [0x0eadbeef, 6], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0xef, 0xbe, 0xad]));
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writePartial('writeUIntBE', [0xdeadbeef, 6, 4], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0xde, 0xad, 0xbe]));
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writePartial('writeUIntLE', [0xdeadbeef, 6, 4], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0xef, 0xbe, 0xad]));
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writePartial('writeUInt16BE', [0x1234, 8], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0, 0, 0x12]));
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writePartial('writeUInt16LE', [0x1234, 8], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0, 0, 0x34]));
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writePartial('writeUInt32BE', [0xdeadbeef, 6], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0xde, 0xad, 0xbe]));
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writePartial('writeUInt32LE', [0xdeadbeef, 6], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0xef, 0xbe, 0xad]));
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writePartial('writeDoubleBE', [1, 2], 10,
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Buffer.from([0, 0, 63, 240, 0, 0, 0, 0, 0]));
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writePartial('writeDoubleLE', [1, 2], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0, 0, 240]));
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writePartial('writeFloatBE', [1, 6], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 63, 128, 0]));
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writePartial('writeFloatLE', [1, 6], 10,
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Buffer.from([0, 0, 0, 0, 0, 0, 0, 0, 128]));
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