deno.land / std@0.166.0 / node / _tools / test / parallel / test-console-instance.js
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 16.13.0// 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 Stream = require('stream');const requiredConsole = require('console');const Console = requiredConsole.Console;
const out = new Stream();const err = new Stream();
// Ensure the Console instance doesn't write to the// process' "stdout" or "stderr" streams.process.stdout.write = process.stderr.write = common.mustNotCall();
// Make sure that the "Console" function exists.assert.strictEqual(typeof Console, 'function');
// Note: We don't replace global console with node.js console// assert.strictEqual(requiredConsole, global.console);// Make sure the custom instanceof of Console worksassert.ok(global.console instanceof Console);assert.ok(!({} instanceof Console));
// Make sure that the Console constructor throws// when not given a writable stream instance.assert.throws( () => { new Console(); }, { code: 'ERR_CONSOLE_WRITABLE_STREAM', name: 'TypeError', message: /stdout/ });
// Console constructor should throw if stderr exists but is not writable.assert.throws( () => { out.write = () => {}; err.write = undefined; new Console(out, err); }, { code: 'ERR_CONSOLE_WRITABLE_STREAM', name: 'TypeError', message: /stderr/ });
out.write = err.write = (d) => {};
{ const c = new Console(out, err); assert.ok(c instanceof Console);
out.write = err.write = common.mustCall((d) => { assert.strictEqual(d, 'test\n'); }, 2);
c.log('test'); c.error('test');
out.write = common.mustCall((d) => { assert.strictEqual(d, '{ foo: 1 }\n'); });
c.dir({ foo: 1 });
// Ensure that the console functions are bound to the console instance. let called = 0; out.write = common.mustCall((d) => { called++; assert.strictEqual(d, `${called} ${called - 1} [ 1, 2, 3 ]\n`); }, 3);
[1, 2, 3].forEach(c.log);}
// Test calling Console without the `new` keyword.{ const withoutNew = Console(out, err); assert.ok(withoutNew instanceof Console);}
// Test extending Console{ class MyConsole extends Console { hello() {} // See if the methods on Console.prototype are overridable. log() { return 'overridden'; } } const myConsole = new MyConsole(process.stdout); assert.strictEqual(typeof myConsole.hello, 'function'); assert.ok(myConsole instanceof Console); assert.strictEqual(myConsole.log(), 'overridden');
const log = myConsole.log; assert.strictEqual(log(), 'overridden');}
// Instance that does not ignore the stream errors.{ const c2 = new Console(out, err, false);
out.write = () => { throw new Error('out'); }; err.write = () => { throw new Error('err'); };
assert.throws(() => c2.log('foo'), /^Error: out$/); assert.throws(() => c2.warn('foo'), /^Error: err$/); assert.throws(() => c2.dir('foo'), /^Error: out$/);}
// Console constructor throws if inspectOptions is not an object.[null, true, false, 'foo', 5, Symbol()].forEach((inspectOptions) => { assert.throws( () => { new Console({ stdout: out, stderr: err, inspectOptions }); }, { message: 'The "options.inspectOptions" property must be of type object.' + common.invalidArgTypeHelper(inspectOptions), code: 'ERR_INVALID_ARG_TYPE' } );});
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