deno.land / std@0.166.0 / node / _tools / test / parallel / test-stream2-set-encoding.js
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 18.12.0// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
// Copyright Joyent, Inc. and other Node contributors.//// Permission is hereby granted, free of charge, to any person obtaining a// copy of this software and associated documentation files (the// "Software"), to deal in the Software without restriction, including// without limitation the rights to use, copy, modify, merge, publish,// distribute, sublicense, and/or sell copies of the Software, and to permit// persons to whom the Software is furnished to do so, subject to the// following conditions://// The above copyright notice and this permission notice shall be included// in all copies or substantial portions of the Software.//// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';const common = require('../common');const assert = require('assert');const { Readable: R } = require('stream');
class TestReader extends R { constructor(n, opts) { super(opts); this.pos = 0; this.len = n || 100; }
_read(n) { setTimeout(() => { if (this.pos >= this.len) { // Double push(null) to test eos handling this.push(null); return this.push(null); }
n = Math.min(n, this.len - this.pos); if (n <= 0) { // Double push(null) to test eos handling this.push(null); return this.push(null); }
this.pos += n; const ret = Buffer.alloc(n, 'a');
return this.push(ret); }, 1); }}
{ // Verify utf8 encoding const tr = new TestReader(100); tr.setEncoding('utf8'); const out = []; const expect = [ 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa' ];
tr.on('readable', function flow() { let chunk; while (null !== (chunk = tr.read(10))) out.push(chunk); });
tr.on('end', common.mustCall(function() { assert.deepStrictEqual(out, expect); }));}
{ // Verify hex encoding const tr = new TestReader(100); tr.setEncoding('hex'); const out = []; const expect = [ '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161' ];
tr.on('readable', function flow() { let chunk; while (null !== (chunk = tr.read(10))) out.push(chunk); });
tr.on('end', common.mustCall(function() { assert.deepStrictEqual(out, expect); }));}
{ // Verify hex encoding with read(13) const tr = new TestReader(100); tr.setEncoding('hex'); const out = []; const expect = [ '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '16161' ];
tr.on('readable', function flow() { let chunk; while (null !== (chunk = tr.read(13))) out.push(chunk); });
tr.on('end', common.mustCall(function() { assert.deepStrictEqual(out, expect); }));}
{ // Verify base64 encoding const tr = new TestReader(100); tr.setEncoding('base64'); const out = []; const expect = [ 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYQ==' ];
tr.on('readable', function flow() { let chunk; while (null !== (chunk = tr.read(10))) out.push(chunk); });
tr.on('end', common.mustCall(function() { assert.deepStrictEqual(out, expect); }));}
{ // Verify utf8 encoding const tr = new TestReader(100, { encoding: 'utf8' }); const out = []; const expect = [ 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa', 'aaaaaaaaaa' ];
tr.on('readable', function flow() { let chunk; while (null !== (chunk = tr.read(10))) out.push(chunk); });
tr.on('end', common.mustCall(function() { assert.deepStrictEqual(out, expect); }));}
{ // Verify hex encoding const tr = new TestReader(100, { encoding: 'hex' }); const out = []; const expect = [ '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161', '6161616161' ];
tr.on('readable', function flow() { let chunk; while (null !== (chunk = tr.read(10))) out.push(chunk); });
tr.on('end', common.mustCall(function() { assert.deepStrictEqual(out, expect); }));}
{ // Verify hex encoding with read(13) const tr = new TestReader(100, { encoding: 'hex' }); const out = []; const expect = [ '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '1616161616161', '6161616161616', '16161' ];
tr.on('readable', function flow() { let chunk; while (null !== (chunk = tr.read(13))) out.push(chunk); });
tr.on('end', common.mustCall(function() { assert.deepStrictEqual(out, expect); }));}
{ // Verify base64 encoding const tr = new TestReader(100, { encoding: 'base64' }); const out = []; const expect = [ 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYWFhYWFh', 'YWFhYWFhYW', 'FhYQ==' ];
tr.on('readable', function flow() { let chunk; while (null !== (chunk = tr.read(10))) out.push(chunk); });
tr.on('end', common.mustCall(function() { assert.deepStrictEqual(out, expect); }));}
{ // Verify chaining behavior const tr = new TestReader(100); assert.deepStrictEqual(tr.setEncoding('utf8'), tr);}
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