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90 lines
3.4 KiB
90 lines
3.4 KiB
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const zero = [];
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const one = [ Buffer.from('asdf') ];
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const long = [];
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for (let i = 0; i < 10; i++) long.push(Buffer.from('asdf'));
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const flatZero = Buffer.concat(zero);
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const flatOne = Buffer.concat(one);
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const flatLong = Buffer.concat(long);
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const flatLongLen = Buffer.concat(long, 40);
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assert.strictEqual(flatZero.length, 0);
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assert.strictEqual(flatOne.toString(), 'asdf');
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const check = 'asdf'.repeat(10);
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// A special case where concat used to return the first item,
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// if the length is one. This check is to make sure that we don't do that.
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assert.notStrictEqual(flatOne, one[0]);
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assert.strictEqual(flatLong.toString(), check);
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assert.strictEqual(flatLongLen.toString(), check);
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assertWrongList();
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assertWrongList(null);
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assertWrongList(Buffer.from('hello'));
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assertWrongList([42]);
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assertWrongList(['hello', 'world']);
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assertWrongList(['hello', Buffer.from('world')]);
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function assertWrongList(value) {
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assert.throws(() => {
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Buffer.concat(value);
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}, common.expectsError({
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code: 'ERR_INVALID_ARG_TYPE',
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type: TypeError,
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message: 'The "list" argument must be one of type ' +
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'array, buffer, or uint8Array'
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}));
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}
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// eslint-disable-next-line crypto-check
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const random10 = common.hasCrypto ?
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require('crypto').randomBytes(10) :
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Buffer.alloc(10, 1);
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const empty = Buffer.alloc(0);
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assert.notDeepStrictEqual(random10, empty);
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assert.notDeepStrictEqual(random10, Buffer.alloc(10));
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assert.deepStrictEqual(Buffer.concat([], 100), empty);
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assert.deepStrictEqual(Buffer.concat([random10], 0), empty);
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assert.deepStrictEqual(Buffer.concat([random10], 10), random10);
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assert.deepStrictEqual(Buffer.concat([random10, random10], 10), random10);
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assert.deepStrictEqual(Buffer.concat([empty, random10]), random10);
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assert.deepStrictEqual(Buffer.concat([random10, empty, empty]), random10);
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// The tail should be zero-filled
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assert.deepStrictEqual(Buffer.concat([empty], 100), Buffer.alloc(100));
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assert.deepStrictEqual(Buffer.concat([empty], 4096), Buffer.alloc(4096));
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assert.deepStrictEqual(
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Buffer.concat([random10], 40),
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Buffer.concat([random10, Buffer.alloc(30)]));
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assert.deepStrictEqual(Buffer.concat([new Uint8Array([0x41, 0x42]),
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new Uint8Array([0x43, 0x44])]),
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Buffer.from('ABCD'));
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