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e270ae9f01
We mainly use <> to visualize special information that is not directly visible as property. PR-URL: https://github.com/nodejs/node/pull/20792 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com> Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Gus Caplan <me@gus.host>
1370 lines
42 KiB
JavaScript
1370 lines
42 KiB
JavaScript
// 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 JSStream = process.binding('js_stream').JSStream;
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const util = require('util');
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const vm = require('vm');
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const { previewEntries } = process.binding('util');
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assert.strictEqual(util.inspect(1), '1');
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assert.strictEqual(util.inspect(false), 'false');
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assert.strictEqual(util.inspect(''), "''");
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assert.strictEqual(util.inspect('hello'), "'hello'");
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assert.strictEqual(util.inspect(function() {}), '[Function]');
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assert.strictEqual(util.inspect(() => {}), '[Function]');
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assert.strictEqual(util.inspect(async function() {}), '[AsyncFunction]');
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assert.strictEqual(util.inspect(async () => {}), '[AsyncFunction]');
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assert.strictEqual(util.inspect(function*() {}), '[GeneratorFunction]');
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assert.strictEqual(util.inspect(undefined), 'undefined');
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assert.strictEqual(util.inspect(null), 'null');
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assert.strictEqual(util.inspect(/foo(bar\n)?/gi), '/foo(bar\\n)?/gi');
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assert.strictEqual(
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util.inspect(new Date('Sun, 14 Feb 2010 11:48:40 GMT')),
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new Date('2010-02-14T12:48:40+01:00').toISOString()
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);
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assert.strictEqual(util.inspect(new Date('')), (new Date('')).toString());
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assert.strictEqual(util.inspect('\n\u0001'), "'\\n\\u0001'");
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assert.strictEqual(
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util.inspect(`${Array(75).fill(1)}'\n\u001d\n\u0003`),
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`'${Array(75).fill(1)}\\'\\n\\u001d\\n\\u0003'`
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);
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assert.strictEqual(util.inspect([]), '[]');
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assert.strictEqual(util.inspect(Object.create([])), 'Array {}');
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assert.strictEqual(util.inspect([1, 2]), '[ 1, 2 ]');
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assert.strictEqual(util.inspect([1, [2, 3]]), '[ 1, [ 2, 3 ] ]');
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assert.strictEqual(util.inspect({}), '{}');
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assert.strictEqual(util.inspect({ a: 1 }), '{ a: 1 }');
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assert.strictEqual(util.inspect({ a: function() {} }), '{ a: [Function: a] }');
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assert.strictEqual(util.inspect({ a: () => {} }), '{ a: [Function: a] }');
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assert.strictEqual(util.inspect({ a: async function() {} }),
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'{ a: [AsyncFunction: a] }');
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assert.strictEqual(util.inspect({ a: async () => {} }),
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'{ a: [AsyncFunction: a] }');
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assert.strictEqual(util.inspect({ a: function*() {} }),
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'{ a: [GeneratorFunction: a] }');
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assert.strictEqual(util.inspect({ a: 1, b: 2 }), '{ a: 1, b: 2 }');
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assert.strictEqual(util.inspect({ 'a': {} }), '{ a: {} }');
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assert.strictEqual(util.inspect({ 'a': { 'b': 2 } }), '{ a: { b: 2 } }');
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assert.strictEqual(util.inspect({ 'a': { 'b': { 'c': { 'd': 2 } } } }),
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'{ a: { b: { c: [Object] } } }');
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assert.strictEqual(
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util.inspect({ 'a': { 'b': { 'c': { 'd': 2 } } } }, false, null),
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'{ a: { b: { c: { d: 2 } } } }');
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assert.strictEqual(util.inspect([1, 2, 3], true), '[ 1, 2, 3, [length]: 3 ]');
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assert.strictEqual(util.inspect({ 'a': { 'b': { 'c': 2 } } }, false, 0),
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'{ a: [Object] }');
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assert.strictEqual(util.inspect({ 'a': { 'b': { 'c': 2 } } }, false, 1),
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'{ a: { b: [Object] } }');
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assert.strictEqual(util.inspect({ 'a': { 'b': ['c'] } }, false, 1),
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'{ a: { b: [Array] } }');
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assert.strictEqual(util.inspect(new Uint8Array(0)), 'Uint8Array [ ]');
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assert.strictEqual(
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util.inspect(
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Object.create(
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{},
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{ visible: { value: 1, enumerable: true }, hidden: { value: 2 } }
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)
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),
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'{ visible: 1 }'
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);
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assert.strictEqual(
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util.inspect(
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Object.assign(new String('hello'), { [Symbol('foo')]: 123 }),
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{ showHidden: true }
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),
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'{ [String: \'hello\'] [length]: 5, [Symbol(foo)]: 123 }'
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);
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assert.strictEqual(util.inspect((new JSStream())._externalStream),
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'[External]');
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{
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const regexp = /regexp/;
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regexp.aprop = 42;
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assert.strictEqual(util.inspect({ a: regexp }, false, 0), '{ a: /regexp/ }');
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}
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assert(/Object/.test(
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util.inspect({ a: { a: { a: { a: {} } } } }, undefined, undefined, true)
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));
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assert(!/Object/.test(
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util.inspect({ a: { a: { a: { a: {} } } } }, undefined, null, true)
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));
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for (const showHidden of [true, false]) {
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const ab = new ArrayBuffer(4);
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const dv = new DataView(ab, 1, 2);
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assert.strictEqual(
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util.inspect(ab, showHidden),
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'ArrayBuffer { byteLength: 4 }'
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);
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assert.strictEqual(util.inspect(new DataView(ab, 1, 2), showHidden),
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'DataView {\n' +
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' byteLength: 2,\n' +
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' byteOffset: 1,\n' +
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' buffer: ArrayBuffer { byteLength: 4 } }');
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assert.strictEqual(
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util.inspect(ab, showHidden),
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'ArrayBuffer { byteLength: 4 }'
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);
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assert.strictEqual(util.inspect(dv, showHidden),
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'DataView {\n' +
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' byteLength: 2,\n' +
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' byteOffset: 1,\n' +
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' buffer: ArrayBuffer { byteLength: 4 } }');
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ab.x = 42;
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dv.y = 1337;
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assert.strictEqual(util.inspect(ab, showHidden),
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'ArrayBuffer { byteLength: 4, x: 42 }');
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assert.strictEqual(util.inspect(dv, showHidden),
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'DataView {\n' +
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' byteLength: 2,\n' +
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' byteOffset: 1,\n' +
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' buffer: ArrayBuffer { byteLength: 4, x: 42 },\n' +
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' y: 1337 }');
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}
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// Now do the same checks but from a different context.
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for (const showHidden of [true, false]) {
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const ab = vm.runInNewContext('new ArrayBuffer(4)');
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const dv = vm.runInNewContext('new DataView(ab, 1, 2)', { ab });
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assert.strictEqual(
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util.inspect(ab, showHidden),
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'ArrayBuffer { byteLength: 4 }'
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);
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assert.strictEqual(util.inspect(new DataView(ab, 1, 2), showHidden),
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'DataView {\n' +
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' byteLength: 2,\n' +
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' byteOffset: 1,\n' +
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' buffer: ArrayBuffer { byteLength: 4 } }');
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assert.strictEqual(
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util.inspect(ab, showHidden),
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'ArrayBuffer { byteLength: 4 }'
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);
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assert.strictEqual(util.inspect(dv, showHidden),
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'DataView {\n' +
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' byteLength: 2,\n' +
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' byteOffset: 1,\n' +
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' buffer: ArrayBuffer { byteLength: 4 } }');
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ab.x = 42;
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dv.y = 1337;
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assert.strictEqual(util.inspect(ab, showHidden),
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'ArrayBuffer { byteLength: 4, x: 42 }');
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assert.strictEqual(util.inspect(dv, showHidden),
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'DataView {\n' +
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' byteLength: 2,\n' +
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' byteOffset: 1,\n' +
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' buffer: ArrayBuffer { byteLength: 4, x: 42 },\n' +
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' y: 1337 }');
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}
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[ Float32Array,
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Float64Array,
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Int16Array,
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Int32Array,
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Int8Array,
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Uint16Array,
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Uint32Array,
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Uint8Array,
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Uint8ClampedArray ].forEach((constructor) => {
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const length = 2;
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const byteLength = length * constructor.BYTES_PER_ELEMENT;
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const array = new constructor(new ArrayBuffer(byteLength), 0, length);
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array[0] = 65;
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array[1] = 97;
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assert.strictEqual(
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util.inspect(array, true),
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`${constructor.name} [\n` +
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' 65,\n' +
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' 97,\n' +
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` [BYTES_PER_ELEMENT]: ${constructor.BYTES_PER_ELEMENT},\n` +
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` [length]: ${length},\n` +
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` [byteLength]: ${byteLength},\n` +
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' [byteOffset]: 0,\n' +
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` [buffer]: ArrayBuffer { byteLength: ${byteLength} } ]`);
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assert.strictEqual(
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util.inspect(array, false),
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`${constructor.name} [ 65, 97 ]`
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);
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});
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// Now check that declaring a TypedArray in a different context works the same.
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[ Float32Array,
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Float64Array,
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Int16Array,
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Int32Array,
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Int8Array,
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Uint16Array,
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Uint32Array,
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Uint8Array,
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Uint8ClampedArray ].forEach((constructor) => {
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const length = 2;
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const byteLength = length * constructor.BYTES_PER_ELEMENT;
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const array = vm.runInNewContext(
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'new constructor(new ArrayBuffer(byteLength), 0, length)',
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{ constructor, byteLength, length }
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);
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array[0] = 65;
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array[1] = 97;
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assert.strictEqual(
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util.inspect(array, true),
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`${constructor.name} [\n` +
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' 65,\n' +
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' 97,\n' +
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` [BYTES_PER_ELEMENT]: ${constructor.BYTES_PER_ELEMENT},\n` +
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` [length]: ${length},\n` +
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` [byteLength]: ${byteLength},\n` +
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' [byteOffset]: 0,\n' +
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` [buffer]: ArrayBuffer { byteLength: ${byteLength} } ]`);
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assert.strictEqual(
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util.inspect(array, false),
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`${constructor.name} [ 65, 97 ]`
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);
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});
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assert.strictEqual(
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util.inspect(Object.create({}, {
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visible: { value: 1, enumerable: true },
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hidden: { value: 2 }
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}), { showHidden: true }),
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'{ visible: 1, [hidden]: 2 }'
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);
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// Objects without prototype.
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assert.strictEqual(
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util.inspect(Object.create(null, {
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name: { value: 'Tim', enumerable: true },
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hidden: { value: 'secret' }
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}), { showHidden: true }),
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"{ name: 'Tim', [hidden]: 'secret' }"
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);
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assert.strictEqual(
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util.inspect(Object.create(null, {
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name: { value: 'Tim', enumerable: true },
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hidden: { value: 'secret' }
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})),
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'{ name: \'Tim\' }'
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);
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// Dynamic properties.
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{
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assert.strictEqual(
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util.inspect({ get readonly() {} }),
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'{ readonly: [Getter] }');
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assert.strictEqual(
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util.inspect({ get readwrite() {}, set readwrite(val) {} }),
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'{ readwrite: [Getter/Setter] }');
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assert.strictEqual(
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// eslint-disable-next-line accessor-pairs
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util.inspect({ set writeonly(val) {} }),
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'{ writeonly: [Setter] }');
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const value = {};
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value.a = value;
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assert.strictEqual(util.inspect(value), '{ a: [Circular] }');
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}
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// Array with dynamic properties.
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{
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const value = [1, 2, 3];
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Object.defineProperty(
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value,
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'growingLength',
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{
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enumerable: true,
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get: function() { this.push(true); return this.length; }
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}
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);
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Object.defineProperty(
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value,
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'-1',
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{
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enumerable: true,
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value: -1
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}
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);
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assert.strictEqual(util.inspect(value),
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'[ 1, 2, 3, growingLength: [Getter], \'-1\': -1 ]');
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}
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// Array with inherited number properties.
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{
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class CustomArray extends Array {}
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CustomArray.prototype[5] = 'foo';
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const arr = new CustomArray(50);
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assert.strictEqual(util.inspect(arr), 'CustomArray [ <50 empty items> ]');
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}
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// Array with extra properties.
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{
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const arr = [1, 2, 3, , ];
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arr.foo = 'bar';
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assert.strictEqual(util.inspect(arr),
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"[ 1, 2, 3, <1 empty item>, foo: 'bar' ]");
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const arr2 = [];
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assert.strictEqual(util.inspect([], { showHidden: true }), '[ [length]: 0 ]');
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arr2['00'] = 1;
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assert.strictEqual(util.inspect(arr2), "[ '00': 1 ]");
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assert.strictEqual(util.inspect(arr2, { showHidden: true }),
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"[ [length]: 0, '00': 1 ]");
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arr2[1] = 0;
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assert.strictEqual(util.inspect(arr2), "[ <1 empty item>, 0, '00': 1 ]");
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assert.strictEqual(util.inspect(arr2, { showHidden: true }),
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"[ <1 empty item>, 0, [length]: 2, '00': 1 ]");
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delete arr2[1];
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assert.strictEqual(util.inspect(arr2), "[ <2 empty items>, '00': 1 ]");
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assert.strictEqual(util.inspect(arr2, { showHidden: true }),
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"[ <2 empty items>, [length]: 2, '00': 1 ]");
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arr2['01'] = 2;
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assert.strictEqual(util.inspect(arr2),
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"[ <2 empty items>, '00': 1, '01': 2 ]");
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assert.strictEqual(util.inspect(arr2, { showHidden: true }),
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"[ <2 empty items>, [length]: 2, '00': 1, '01': 2 ]");
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const arr3 = [];
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arr3[-1] = -1;
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assert.strictEqual(util.inspect(arr3), "[ '-1': -1 ]");
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}
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// Indices out of bounds.
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{
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const arr = [];
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arr[2 ** 32] = true; // Not a valid array index.
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assert.strictEqual(util.inspect(arr), "[ '4294967296': true ]");
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arr[0] = true;
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arr[10] = true;
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assert.strictEqual(util.inspect(arr),
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"[ true, <9 empty items>, true, '4294967296': true ]");
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arr[2 ** 32 - 2] = true;
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arr[2 ** 32 - 1] = true;
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arr[2 ** 32 + 1] = true;
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delete arr[0];
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delete arr[10];
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assert.strictEqual(util.inspect(arr),
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['[ <4294967294 empty items>,',
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'true,',
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"'4294967296': true,",
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"'4294967295': true,",
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||
"'4294967297': true ]"
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||
].join('\n '));
|
||
}
|
||
|
||
// Function with properties.
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||
{
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||
const value = () => {};
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value.aprop = 42;
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assert.strictEqual(util.inspect(value), '{ [Function: value] aprop: 42 }');
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||
}
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||
|
||
// Anonymous function with properties.
|
||
{
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const value = (() => function() {})();
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value.aprop = 42;
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assert.strictEqual(util.inspect(value), '{ [Function] aprop: 42 }');
|
||
}
|
||
|
||
// Regular expressions with properties.
|
||
{
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const value = /123/ig;
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||
value.aprop = 42;
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assert.strictEqual(util.inspect(value), '{ /123/gi aprop: 42 }');
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||
}
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||
|
||
// Dates with properties.
|
||
{
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||
const value = new Date('Sun, 14 Feb 2010 11:48:40 GMT');
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||
value.aprop = 42;
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assert.strictEqual(util.inspect(value),
|
||
'{ 2010-02-14T11:48:40.000Z aprop: 42 }');
|
||
}
|
||
|
||
// Test the internal isDate implementation.
|
||
{
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||
const Date2 = vm.runInNewContext('Date');
|
||
const d = new Date2();
|
||
const orig = util.inspect(d);
|
||
Date2.prototype.foo = 'bar';
|
||
const after = util.inspect(d);
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||
assert.strictEqual(orig, after);
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||
}
|
||
|
||
// Test positive/negative zero.
|
||
assert.strictEqual(util.inspect(0), '0');
|
||
assert.strictEqual(util.inspect(-0), '-0');
|
||
// Edge case from check.
|
||
assert.strictEqual(util.inspect(-5e-324), '-5e-324');
|
||
|
||
// Test for sparse array.
|
||
{
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||
const a = ['foo', 'bar', 'baz'];
|
||
assert.strictEqual(util.inspect(a), '[ \'foo\', \'bar\', \'baz\' ]');
|
||
delete a[1];
|
||
assert.strictEqual(util.inspect(a), '[ \'foo\', <1 empty item>, \'baz\' ]');
|
||
assert.strictEqual(
|
||
util.inspect(a, true),
|
||
'[ \'foo\', <1 empty item>, \'baz\', [length]: 3 ]'
|
||
);
|
||
assert.strictEqual(util.inspect(new Array(5)), '[ <5 empty items> ]');
|
||
a[3] = 'bar';
|
||
a[100] = 'qux';
|
||
assert.strictEqual(
|
||
util.inspect(a, { breakLength: Infinity }),
|
||
'[ \'foo\', <1 empty item>, \'baz\', \'bar\', <96 empty items>, \'qux\' ]'
|
||
);
|
||
delete a[3];
|
||
assert.strictEqual(
|
||
util.inspect(a, { maxArrayLength: 4 }),
|
||
'[ \'foo\', <1 empty item>, \'baz\', <97 empty items>, ... 1 more item ]'
|
||
);
|
||
}
|
||
|
||
// Test for Array constructor in different context.
|
||
{
|
||
const map = new Map();
|
||
map.set(1, 2);
|
||
const vals = previewEntries(map.entries());
|
||
const valsOutput = [];
|
||
for (const o of vals) {
|
||
valsOutput.push(o);
|
||
}
|
||
|
||
assert.strictEqual(util.inspect(valsOutput), '[ [ 1, 2 ] ]');
|
||
}
|
||
|
||
// Test for other constructors in different context.
|
||
{
|
||
let obj = vm.runInNewContext('(function(){return {}})()', {});
|
||
assert.strictEqual(util.inspect(obj), '{}');
|
||
obj = vm.runInNewContext('var m=new Map();m.set(1,2);m', {});
|
||
assert.strictEqual(util.inspect(obj), 'Map { 1 => 2 }');
|
||
obj = vm.runInNewContext('var s=new Set();s.add(1);s.add(2);s', {});
|
||
assert.strictEqual(util.inspect(obj), 'Set { 1, 2 }');
|
||
obj = vm.runInNewContext('fn=function(){};new Promise(fn,fn)', {});
|
||
assert.strictEqual(util.inspect(obj), 'Promise { <pending> }');
|
||
}
|
||
|
||
// Test for property descriptors.
|
||
{
|
||
const getter = Object.create(null, {
|
||
a: {
|
||
get: function() { return 'aaa'; }
|
||
}
|
||
});
|
||
const setter = Object.create(null, {
|
||
b: { // eslint-disable-line accessor-pairs
|
||
set: function() {}
|
||
}
|
||
});
|
||
const getterAndSetter = Object.create(null, {
|
||
c: {
|
||
get: function() { return 'ccc'; },
|
||
set: function() {}
|
||
}
|
||
});
|
||
assert.strictEqual(util.inspect(getter, true), '{ [a]: [Getter] }');
|
||
assert.strictEqual(util.inspect(setter, true), '{ [b]: [Setter] }');
|
||
assert.strictEqual(
|
||
util.inspect(getterAndSetter, true),
|
||
'{ [c]: [Getter/Setter] }'
|
||
);
|
||
}
|
||
|
||
// Exceptions should print the error message, not '{}'.
|
||
{
|
||
const errors = [];
|
||
errors.push(new Error());
|
||
errors.push(new Error('FAIL'));
|
||
errors.push(new TypeError('FAIL'));
|
||
errors.push(new SyntaxError('FAIL'));
|
||
errors.forEach((err) => {
|
||
assert.strictEqual(util.inspect(err), err.stack);
|
||
});
|
||
try {
|
||
undef(); // eslint-disable-line no-undef
|
||
} catch (e) {
|
||
assert.strictEqual(util.inspect(e), e.stack);
|
||
}
|
||
const ex = util.inspect(new Error('FAIL'), true);
|
||
assert(ex.includes('Error: FAIL'));
|
||
assert(ex.includes('[stack]'));
|
||
assert(ex.includes('[message]'));
|
||
}
|
||
|
||
// Doesn't capture stack trace.
|
||
{
|
||
function BadCustomError(msg) {
|
||
Error.call(this);
|
||
Object.defineProperty(this, 'message',
|
||
{ value: msg, enumerable: false });
|
||
Object.defineProperty(this, 'name',
|
||
{ value: 'BadCustomError', enumerable: false });
|
||
}
|
||
util.inherits(BadCustomError, Error);
|
||
assert.strictEqual(
|
||
util.inspect(new BadCustomError('foo')),
|
||
'[BadCustomError: foo]'
|
||
);
|
||
}
|
||
|
||
// https://github.com/nodejs/node-v0.x-archive/issues/1941
|
||
assert.strictEqual(util.inspect(Object.create(Date.prototype)), 'Date {}');
|
||
|
||
// https://github.com/nodejs/node-v0.x-archive/issues/1944
|
||
{
|
||
const d = new Date();
|
||
d.toUTCString = null;
|
||
util.inspect(d);
|
||
}
|
||
|
||
// Should not throw.
|
||
{
|
||
const d = new Date();
|
||
d.toISOString = null;
|
||
util.inspect(d);
|
||
}
|
||
|
||
// Should not throw.
|
||
{
|
||
const r = /regexp/;
|
||
r.toString = null;
|
||
util.inspect(r);
|
||
}
|
||
|
||
// See https://github.com/nodejs/node-v0.x-archive/issues/2225
|
||
{
|
||
const x = { [util.inspect.custom]: util.inspect };
|
||
assert(util.inspect(x).includes(
|
||
'[Symbol(util.inspect.custom)]: \n { [Function: inspect]'));
|
||
}
|
||
|
||
// `util.inspect` should display the escaped value of a key.
|
||
{
|
||
const w = {
|
||
'\\': 1,
|
||
'\\\\': 2,
|
||
'\\\\\\': 3,
|
||
'\\\\\\\\': 4,
|
||
'\n': 5,
|
||
'\r': 6
|
||
};
|
||
|
||
const y = ['a', 'b', 'c'];
|
||
y['\\\\'] = 'd';
|
||
y['\n'] = 'e';
|
||
y['\r'] = 'f';
|
||
|
||
assert.strictEqual(
|
||
util.inspect(w),
|
||
'{ \'\\\\\': 1, \'\\\\\\\\\': 2, \'\\\\\\\\\\\\\': 3, ' +
|
||
'\'\\\\\\\\\\\\\\\\\': 4, \'\\n\': 5, \'\\r\': 6 }'
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(y),
|
||
'[ \'a\', \'b\', \'c\', \'\\\\\\\\\': \'d\', ' +
|
||
'\'\\n\': \'e\', \'\\r\': \'f\' ]'
|
||
);
|
||
}
|
||
|
||
// Test util.inspect.styles and util.inspect.colors.
|
||
{
|
||
function testColorStyle(style, input, implicit) {
|
||
const colorName = util.inspect.styles[style];
|
||
let color = ['', ''];
|
||
if (util.inspect.colors[colorName])
|
||
color = util.inspect.colors[colorName];
|
||
|
||
const withoutColor = util.inspect(input, false, 0, false);
|
||
const withColor = util.inspect(input, false, 0, true);
|
||
const expect = `\u001b[${color[0]}m${withoutColor}\u001b[${color[1]}m`;
|
||
assert.strictEqual(
|
||
withColor,
|
||
expect,
|
||
`util.inspect color for style ${style}`);
|
||
}
|
||
|
||
testColorStyle('special', function() {});
|
||
testColorStyle('number', 123.456);
|
||
testColorStyle('boolean', true);
|
||
testColorStyle('undefined', undefined);
|
||
testColorStyle('null', null);
|
||
testColorStyle('string', 'test string');
|
||
testColorStyle('date', new Date());
|
||
testColorStyle('regexp', /regexp/);
|
||
}
|
||
|
||
// An object with "hasOwnProperty" overwritten should not throw.
|
||
util.inspect({ hasOwnProperty: null });
|
||
|
||
// New API, accepts an "options" object.
|
||
{
|
||
const subject = { foo: 'bar', hello: 31, a: { b: { c: { d: 0 } } } };
|
||
Object.defineProperty(subject, 'hidden', { enumerable: false, value: null });
|
||
|
||
assert.strictEqual(
|
||
util.inspect(subject, { showHidden: false }).includes('hidden'),
|
||
false
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(subject, { showHidden: true }).includes('hidden'),
|
||
true
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(subject, { colors: false }).includes('\u001b[32m'),
|
||
false
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(subject, { colors: true }).includes('\u001b[32m'),
|
||
true
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(subject, { depth: 2 }).includes('c: [Object]'),
|
||
true
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(subject, { depth: 0 }).includes('a: [Object]'),
|
||
true
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(subject, { depth: null }).includes('{ d: 0 }'),
|
||
true
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(subject, { depth: undefined }).includes('{ d: 0 }'),
|
||
true
|
||
);
|
||
}
|
||
|
||
{
|
||
// "customInspect" option can enable/disable calling [util.inspect.custom]().
|
||
const subject = { [util.inspect.custom]: () => 123 };
|
||
|
||
assert.strictEqual(
|
||
util.inspect(subject, { customInspect: true }).includes('123'),
|
||
true
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(subject, { customInspect: true }).includes('inspect'),
|
||
false
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(subject, { customInspect: false }).includes('123'),
|
||
false
|
||
);
|
||
assert.strictEqual(
|
||
util.inspect(subject, { customInspect: false }).includes('inspect'),
|
||
true
|
||
);
|
||
|
||
// A custom [util.inspect.custom]() should be able to return other Objects.
|
||
subject[util.inspect.custom] = () => ({ foo: 'bar' });
|
||
|
||
assert.strictEqual(util.inspect(subject), '{ foo: \'bar\' }');
|
||
|
||
subject[util.inspect.custom] = (depth, opts) => {
|
||
assert.strictEqual(opts.customInspectOptions, true);
|
||
};
|
||
|
||
util.inspect(subject, { customInspectOptions: true });
|
||
}
|
||
|
||
{
|
||
// Returning `this` from a custom inspection function works.
|
||
const subject = { a: 123, [util.inspect.custom]() { return this; } };
|
||
const UIC = 'util.inspect.custom';
|
||
assert.strictEqual(util.inspect(subject),
|
||
`{ a: 123,\n [Symbol(${UIC})]: [Function: [${UIC}]] }`);
|
||
}
|
||
|
||
// Using `util.inspect` with "colors" option should produce as many lines as
|
||
// without it.
|
||
{
|
||
function testLines(input) {
|
||
const countLines = (str) => (str.match(/\n/g) || []).length;
|
||
const withoutColor = util.inspect(input);
|
||
const withColor = util.inspect(input, { colors: true });
|
||
assert.strictEqual(countLines(withoutColor), countLines(withColor));
|
||
}
|
||
|
||
const bigArray = new Array(100).fill().map((value, index) => index);
|
||
|
||
testLines([1, 2, 3, 4, 5, 6, 7]);
|
||
testLines(bigArray);
|
||
testLines({ foo: 'bar', baz: 35, b: { a: 35 } });
|
||
testLines({ a: { a: 3, b: 1, c: 1, d: 1, e: 1, f: 1, g: 1, h: 1 }, b: 1 });
|
||
testLines({
|
||
foo: 'bar',
|
||
baz: 35,
|
||
b: { a: 35 },
|
||
veryLongKey: 'very long value',
|
||
evenLongerKey: ['with even longer value in array']
|
||
});
|
||
}
|
||
|
||
// Test boxed primitives output the correct values.
|
||
assert.strictEqual(util.inspect(new String('test')), '[String: \'test\']');
|
||
assert.strictEqual(
|
||
util.inspect(Object(Symbol('test'))),
|
||
'[Symbol: Symbol(test)]'
|
||
);
|
||
assert.strictEqual(util.inspect(new Boolean(false)), '[Boolean: false]');
|
||
assert.strictEqual(util.inspect(new Boolean(true)), '[Boolean: true]');
|
||
assert.strictEqual(util.inspect(new Number(0)), '[Number: 0]');
|
||
assert.strictEqual(util.inspect(new Number(-0)), '[Number: -0]');
|
||
assert.strictEqual(util.inspect(new Number(-1.1)), '[Number: -1.1]');
|
||
assert.strictEqual(util.inspect(new Number(13.37)), '[Number: 13.37]');
|
||
|
||
// Test boxed primitives with own properties.
|
||
{
|
||
const str = new String('baz');
|
||
str.foo = 'bar';
|
||
assert.strictEqual(util.inspect(str), '{ [String: \'baz\'] foo: \'bar\' }');
|
||
|
||
const bool = new Boolean(true);
|
||
bool.foo = 'bar';
|
||
assert.strictEqual(util.inspect(bool), '{ [Boolean: true] foo: \'bar\' }');
|
||
|
||
const num = new Number(13.37);
|
||
num.foo = 'bar';
|
||
assert.strictEqual(util.inspect(num), '{ [Number: 13.37] foo: \'bar\' }');
|
||
}
|
||
|
||
// Test es6 Symbol.
|
||
if (typeof Symbol !== 'undefined') {
|
||
assert.strictEqual(util.inspect(Symbol()), 'Symbol()');
|
||
assert.strictEqual(util.inspect(Symbol(123)), 'Symbol(123)');
|
||
assert.strictEqual(util.inspect(Symbol('hi')), 'Symbol(hi)');
|
||
assert.strictEqual(util.inspect([Symbol()]), '[ Symbol() ]');
|
||
assert.strictEqual(util.inspect({ foo: Symbol() }), '{ foo: Symbol() }');
|
||
|
||
const options = { showHidden: true };
|
||
let subject = {};
|
||
|
||
subject[Symbol('symbol')] = 42;
|
||
|
||
assert.strictEqual(util.inspect(subject), '{ [Symbol(symbol)]: 42 }');
|
||
assert.strictEqual(
|
||
util.inspect(subject, options),
|
||
'{ [Symbol(symbol)]: 42 }'
|
||
);
|
||
|
||
Object.defineProperty(
|
||
subject,
|
||
Symbol(),
|
||
{ enumerable: false, value: 'non-enum' });
|
||
assert.strictEqual(util.inspect(subject), '{ [Symbol(symbol)]: 42 }');
|
||
assert.strictEqual(
|
||
util.inspect(subject, options),
|
||
'{ [Symbol(symbol)]: 42, [Symbol()]: \'non-enum\' }'
|
||
);
|
||
|
||
subject = [1, 2, 3];
|
||
subject[Symbol('symbol')] = 42;
|
||
|
||
assert.strictEqual(util.inspect(subject),
|
||
'[ 1, 2, 3, [Symbol(symbol)]: 42 ]');
|
||
}
|
||
|
||
// Test Set.
|
||
{
|
||
assert.strictEqual(util.inspect(new Set()), 'Set {}');
|
||
assert.strictEqual(util.inspect(new Set([1, 2, 3])), 'Set { 1, 2, 3 }');
|
||
const set = new Set(['foo']);
|
||
set.bar = 42;
|
||
assert.strictEqual(
|
||
util.inspect(set, true),
|
||
'Set { \'foo\', [size]: 1, bar: 42 }'
|
||
);
|
||
}
|
||
|
||
// Test circular Set.
|
||
{
|
||
const set = new Set();
|
||
set.add(set);
|
||
assert.strictEqual(util.inspect(set), 'Set { [Circular] }');
|
||
}
|
||
|
||
// Test Map.
|
||
{
|
||
assert.strictEqual(util.inspect(new Map()), 'Map {}');
|
||
assert.strictEqual(util.inspect(new Map([[1, 'a'], [2, 'b'], [3, 'c']])),
|
||
'Map { 1 => \'a\', 2 => \'b\', 3 => \'c\' }');
|
||
const map = new Map([['foo', null]]);
|
||
map.bar = 42;
|
||
assert.strictEqual(util.inspect(map, true),
|
||
'Map { \'foo\' => null, [size]: 1, bar: 42 }');
|
||
}
|
||
|
||
// Test circular Map.
|
||
{
|
||
const map = new Map();
|
||
map.set(map, 'map');
|
||
assert.strictEqual(util.inspect(map), "Map { [Circular] => 'map' }");
|
||
map.set(map, map);
|
||
assert.strictEqual(util.inspect(map), 'Map { [Circular] => [Circular] }');
|
||
map.delete(map);
|
||
map.set('map', map);
|
||
assert.strictEqual(util.inspect(map), "Map { 'map' => [Circular] }");
|
||
}
|
||
|
||
// Test Promise.
|
||
{
|
||
const resolved = Promise.resolve(3);
|
||
assert.strictEqual(util.inspect(resolved), 'Promise { 3 }');
|
||
|
||
const rejected = Promise.reject(3);
|
||
assert.strictEqual(util.inspect(rejected), 'Promise { <rejected> 3 }');
|
||
// Squelch UnhandledPromiseRejection.
|
||
rejected.catch(() => {});
|
||
|
||
const pending = new Promise(() => {});
|
||
assert.strictEqual(util.inspect(pending), 'Promise { <pending> }');
|
||
|
||
const promiseWithProperty = Promise.resolve('foo');
|
||
promiseWithProperty.bar = 42;
|
||
assert.strictEqual(util.inspect(promiseWithProperty),
|
||
'Promise { \'foo\', bar: 42 }');
|
||
}
|
||
|
||
// Make sure it doesn't choke on polyfills. Unlike Set/Map, there is no standard
|
||
// interface to synchronously inspect a Promise, so our techniques only work on
|
||
// a bonafide native Promise.
|
||
{
|
||
const oldPromise = Promise;
|
||
global.Promise = function() { this.bar = 42; };
|
||
assert.strictEqual(util.inspect(new Promise()), '{ bar: 42 }');
|
||
global.Promise = oldPromise;
|
||
}
|
||
|
||
// Test Map iterators.
|
||
{
|
||
const map = new Map([['foo', 'bar']]);
|
||
assert.strictEqual(util.inspect(map.keys()), '[Map Iterator] { \'foo\' }');
|
||
assert.strictEqual(util.inspect(map.values()), '[Map Iterator] { \'bar\' }');
|
||
assert.strictEqual(util.inspect(map.entries()),
|
||
'[Map Iterator] { [ \'foo\', \'bar\' ] }');
|
||
// Make sure the iterator doesn't get consumed.
|
||
const keys = map.keys();
|
||
assert.strictEqual(util.inspect(keys), '[Map Iterator] { \'foo\' }');
|
||
assert.strictEqual(util.inspect(keys), '[Map Iterator] { \'foo\' }');
|
||
keys.extra = true;
|
||
assert.strictEqual(
|
||
util.inspect(keys, { maxArrayLength: 0 }),
|
||
'[Map Iterator] { ... more items, extra: true }');
|
||
}
|
||
|
||
// Test Set iterators.
|
||
{
|
||
const aSet = new Set([1, 3]);
|
||
assert.strictEqual(util.inspect(aSet.keys()), '[Set Iterator] { 1, 3 }');
|
||
assert.strictEqual(util.inspect(aSet.values()), '[Set Iterator] { 1, 3 }');
|
||
assert.strictEqual(util.inspect(aSet.entries()), '[Set Iterator] { 1, 3 }');
|
||
// Make sure the iterator doesn't get consumed.
|
||
const keys = aSet.keys();
|
||
assert.strictEqual(util.inspect(keys), '[Set Iterator] { 1, 3 }');
|
||
assert.strictEqual(util.inspect(keys), '[Set Iterator] { 1, 3 }');
|
||
keys.extra = true;
|
||
assert.strictEqual(
|
||
util.inspect(keys, { maxArrayLength: 1 }),
|
||
'[Set Iterator] { 1, ... more items, extra: true }');
|
||
}
|
||
|
||
// Test alignment of items in container.
|
||
// Assumes that the first numeric character is the start of an item.
|
||
{
|
||
function checkAlignment(container) {
|
||
const lines = util.inspect(container).split('\n');
|
||
const numRE = /\d/;
|
||
let pos;
|
||
lines.forEach((line) => {
|
||
const npos = line.search(numRE);
|
||
if (npos !== -1) {
|
||
if (pos !== undefined) {
|
||
assert.strictEqual(pos, npos, 'container items not aligned');
|
||
}
|
||
pos = npos;
|
||
}
|
||
});
|
||
}
|
||
|
||
const bigArray = [];
|
||
for (let i = 0; i < 100; i++) {
|
||
bigArray.push(i);
|
||
}
|
||
|
||
const obj = {};
|
||
bigArray.forEach((prop) => {
|
||
obj[prop] = null;
|
||
});
|
||
|
||
checkAlignment(bigArray);
|
||
checkAlignment(obj);
|
||
checkAlignment(new Set(bigArray));
|
||
checkAlignment(new Map(bigArray.map((number) => [number, null])));
|
||
}
|
||
|
||
|
||
// Test display of constructors.
|
||
{
|
||
class ObjectSubclass {}
|
||
class ArraySubclass extends Array {}
|
||
class SetSubclass extends Set {}
|
||
class MapSubclass extends Map {}
|
||
class PromiseSubclass extends Promise {}
|
||
|
||
const x = new ObjectSubclass();
|
||
x.foo = 42;
|
||
assert.strictEqual(util.inspect(x),
|
||
'ObjectSubclass { foo: 42 }');
|
||
assert.strictEqual(util.inspect(new ArraySubclass(1, 2, 3)),
|
||
'ArraySubclass [ 1, 2, 3 ]');
|
||
assert.strictEqual(util.inspect(new SetSubclass([1, 2, 3])),
|
||
'SetSubclass [Set] { 1, 2, 3 }');
|
||
assert.strictEqual(util.inspect(new MapSubclass([['foo', 42]])),
|
||
'MapSubclass [Map] { \'foo\' => 42 }');
|
||
assert.strictEqual(util.inspect(new PromiseSubclass(() => {})),
|
||
'PromiseSubclass [Promise] { <pending> }');
|
||
assert.strictEqual(
|
||
util.inspect({ a: { b: new ArraySubclass([1, [2], 3]) } }, { depth: 1 }),
|
||
'{ a: { b: [ArraySubclass] } }'
|
||
);
|
||
}
|
||
|
||
// Empty and circular before depth.
|
||
{
|
||
const arr = [[[[]]]];
|
||
assert.strictEqual(util.inspect(arr), '[ [ [ [] ] ] ]');
|
||
arr[0][0][0][0] = [];
|
||
assert.strictEqual(util.inspect(arr), '[ [ [ [Array] ] ] ]');
|
||
arr[0][0][0] = {};
|
||
assert.strictEqual(util.inspect(arr), '[ [ [ {} ] ] ]');
|
||
arr[0][0][0] = { a: 2 };
|
||
assert.strictEqual(util.inspect(arr), '[ [ [ [Object] ] ] ]');
|
||
arr[0][0][0] = arr;
|
||
assert.strictEqual(util.inspect(arr), '[ [ [ [Circular] ] ] ]');
|
||
}
|
||
|
||
// Corner cases.
|
||
{
|
||
const x = { constructor: 42 };
|
||
assert.strictEqual(util.inspect(x), '{ constructor: 42 }');
|
||
}
|
||
|
||
{
|
||
const x = {};
|
||
Object.defineProperty(x, 'constructor', {
|
||
get: function() {
|
||
throw new Error('should not access constructor');
|
||
},
|
||
enumerable: true
|
||
});
|
||
assert.strictEqual(util.inspect(x), '{ constructor: [Getter] }');
|
||
}
|
||
|
||
{
|
||
const x = new function() {}; // eslint-disable-line new-parens
|
||
assert.strictEqual(util.inspect(x), '{}');
|
||
}
|
||
|
||
{
|
||
const x = Object.create(null);
|
||
assert.strictEqual(util.inspect(x), '{}');
|
||
}
|
||
|
||
{
|
||
const x = [];
|
||
x[''] = 1;
|
||
assert.strictEqual(util.inspect(x), '[ \'\': 1 ]');
|
||
}
|
||
|
||
// The following maxArrayLength tests were introduced after v6.0.0 was released.
|
||
// Do not backport to v5/v4 unless all of
|
||
// https://github.com/nodejs/node/pull/6334 is backported.
|
||
{
|
||
const x = new Array(101).fill();
|
||
assert(util.inspect(x).endsWith('1 more item ]'));
|
||
assert(!util.inspect(x, { maxArrayLength: 101 }).endsWith('1 more item ]'));
|
||
assert.strictEqual(
|
||
util.inspect(x, { maxArrayLength: -1 }),
|
||
'[ ... 101 more items ]'
|
||
);
|
||
assert.strictEqual(util.inspect(x, { maxArrayLength: 0 }),
|
||
'[ ... 101 more items ]');
|
||
}
|
||
|
||
{
|
||
const x = Array(101);
|
||
assert.strictEqual(util.inspect(x, { maxArrayLength: 0 }),
|
||
'[ ... 101 more items ]');
|
||
assert(!util.inspect(x, { maxArrayLength: null }).endsWith('1 more item ]'));
|
||
assert(!util.inspect(
|
||
x, { maxArrayLength: Infinity }
|
||
).endsWith('1 more item ]'));
|
||
}
|
||
|
||
{
|
||
const x = new Uint8Array(101);
|
||
assert(util.inspect(x).endsWith('1 more item ]'));
|
||
assert(!util.inspect(x, { maxArrayLength: 101 }).endsWith('1 more item ]'));
|
||
assert.strictEqual(util.inspect(x, { maxArrayLength: 0 }),
|
||
'Uint8Array [ ... 101 more items ]');
|
||
assert(!util.inspect(x, { maxArrayLength: null }).endsWith('1 more item ]'));
|
||
assert(util.inspect(x, { maxArrayLength: Infinity }).endsWith(' 0 ]'));
|
||
}
|
||
|
||
{
|
||
const obj = { foo: 'abc', bar: 'xyz' };
|
||
const oneLine = util.inspect(obj, { breakLength: Infinity });
|
||
// Subtract four for the object's two curly braces and two spaces of padding.
|
||
// Add one more to satisfy the strictly greater than condition in the code.
|
||
const breakpoint = oneLine.length - 5;
|
||
const twoLines = util.inspect(obj, { breakLength: breakpoint });
|
||
|
||
assert.strictEqual(oneLine, '{ foo: \'abc\', bar: \'xyz\' }');
|
||
assert.strictEqual(oneLine,
|
||
util.inspect(obj, { breakLength: breakpoint + 1 }));
|
||
assert.strictEqual(twoLines, '{ foo: \'abc\',\n bar: \'xyz\' }');
|
||
}
|
||
|
||
// util.inspect.defaultOptions tests.
|
||
{
|
||
const arr = new Array(101).fill();
|
||
const obj = { a: { a: { a: { a: 1 } } } };
|
||
|
||
const oldOptions = Object.assign({}, util.inspect.defaultOptions);
|
||
|
||
// Set single option through property assignment.
|
||
util.inspect.defaultOptions.maxArrayLength = null;
|
||
assert(!/1 more item/.test(util.inspect(arr)));
|
||
util.inspect.defaultOptions.maxArrayLength = oldOptions.maxArrayLength;
|
||
assert(/1 more item/.test(util.inspect(arr)));
|
||
util.inspect.defaultOptions.depth = null;
|
||
assert(!/Object/.test(util.inspect(obj)));
|
||
util.inspect.defaultOptions.depth = oldOptions.depth;
|
||
assert(/Object/.test(util.inspect(obj)));
|
||
assert.strictEqual(
|
||
JSON.stringify(util.inspect.defaultOptions),
|
||
JSON.stringify(oldOptions)
|
||
);
|
||
|
||
// Set multiple options through object assignment.
|
||
util.inspect.defaultOptions = { maxArrayLength: null, depth: 2 };
|
||
assert(!/1 more item/.test(util.inspect(arr)));
|
||
assert(/Object/.test(util.inspect(obj)));
|
||
util.inspect.defaultOptions = oldOptions;
|
||
assert(/1 more item/.test(util.inspect(arr)));
|
||
assert(/Object/.test(util.inspect(obj)));
|
||
assert.strictEqual(
|
||
JSON.stringify(util.inspect.defaultOptions),
|
||
JSON.stringify(oldOptions)
|
||
);
|
||
|
||
common.expectsError(() => {
|
||
util.inspect.defaultOptions = null;
|
||
}, {
|
||
code: 'ERR_INVALID_ARG_TYPE',
|
||
type: TypeError,
|
||
message: 'The "options" argument must be of type Object. ' +
|
||
'Received type object'
|
||
}
|
||
);
|
||
|
||
common.expectsError(() => {
|
||
util.inspect.defaultOptions = 'bad';
|
||
}, {
|
||
code: 'ERR_INVALID_ARG_TYPE',
|
||
type: TypeError,
|
||
message: 'The "options" argument must be of type Object. ' +
|
||
'Received type string'
|
||
}
|
||
);
|
||
}
|
||
|
||
util.inspect(process);
|
||
|
||
// Setting custom inspect property to a non-function should do nothing.
|
||
{
|
||
const obj = { [util.inspect.custom]: 'fhqwhgads' };
|
||
assert.strictEqual(
|
||
util.inspect(obj),
|
||
"{ [Symbol(util.inspect.custom)]: 'fhqwhgads' }"
|
||
);
|
||
}
|
||
|
||
{
|
||
// @@toStringTag
|
||
assert.strictEqual(util.inspect({ [Symbol.toStringTag]: 'a' }),
|
||
'Object [a] { [Symbol(Symbol.toStringTag)]: \'a\' }');
|
||
|
||
class Foo {
|
||
constructor() {
|
||
this.foo = 'bar';
|
||
}
|
||
|
||
get [Symbol.toStringTag]() {
|
||
return this.foo;
|
||
}
|
||
}
|
||
|
||
assert.strictEqual(util.inspect(
|
||
Object.create(null, { [Symbol.toStringTag]: { value: 'foo' } })),
|
||
'[foo] {}');
|
||
|
||
assert.strictEqual(util.inspect(new Foo()), 'Foo [bar] { foo: \'bar\' }');
|
||
|
||
assert.strictEqual(
|
||
util.inspect(new (class extends Foo {})()),
|
||
'Foo [bar] { foo: \'bar\' }');
|
||
|
||
assert.strictEqual(
|
||
util.inspect(Object.create(Object.create(Foo.prototype), {
|
||
foo: { value: 'bar', enumerable: true }
|
||
})),
|
||
'Foo [bar] { foo: \'bar\' }');
|
||
|
||
class ThrowingClass {
|
||
get [Symbol.toStringTag]() {
|
||
throw new Error('toStringTag error');
|
||
}
|
||
}
|
||
|
||
assert.throws(() => util.inspect(new ThrowingClass()), /toStringTag error/);
|
||
|
||
class NotStringClass {
|
||
get [Symbol.toStringTag]() {
|
||
return null;
|
||
}
|
||
}
|
||
|
||
assert.strictEqual(util.inspect(new NotStringClass()),
|
||
'NotStringClass {}');
|
||
}
|
||
|
||
{
|
||
const o = {
|
||
a: [1, 2, [[
|
||
'Lorem ipsum dolor\nsit amet,\tconsectetur adipiscing elit, sed do ' +
|
||
'eiusmod tempor incididunt ut labore et dolore magna aliqua.',
|
||
'test',
|
||
'foo']], 4],
|
||
b: new Map([['za', 1], ['zb', 'test']])
|
||
};
|
||
|
||
let out = util.inspect(o, { compact: true, depth: 5, breakLength: 80 });
|
||
let expect = [
|
||
'{ a: ',
|
||
' [ 1,',
|
||
' 2,',
|
||
" [ [ 'Lorem ipsum dolor\\nsit amet,\\tconsectetur adipiscing elit, " +
|
||
"sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.',",
|
||
" 'test',",
|
||
" 'foo' ] ],",
|
||
' 4 ],',
|
||
" b: Map { 'za' => 1, 'zb' => 'test' } }",
|
||
].join('\n');
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(o, { compact: false, depth: 5, breakLength: 60 });
|
||
expect = [
|
||
'{',
|
||
' a: [',
|
||
' 1,',
|
||
' 2,',
|
||
' [',
|
||
' [',
|
||
' \'Lorem ipsum dolor\\nsit amet,\\tconsectetur \' +',
|
||
' \'adipiscing elit, sed do eiusmod tempor \' +',
|
||
' \'incididunt ut labore et dolore magna \' +',
|
||
' \'aliqua.\',',
|
||
' \'test\',',
|
||
' \'foo\'',
|
||
' ]',
|
||
' ],',
|
||
' 4',
|
||
' ],',
|
||
' b: Map {',
|
||
' \'za\' => 1,',
|
||
' \'zb\' => \'test\'',
|
||
' }',
|
||
'}'
|
||
].join('\n');
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(o.a[2][0][0], { compact: false, breakLength: 30 });
|
||
expect = [
|
||
'\'Lorem ipsum dolor\\nsit \' +',
|
||
' \'amet,\\tconsectetur \' +',
|
||
' \'adipiscing elit, sed do \' +',
|
||
' \'eiusmod tempor incididunt \' +',
|
||
' \'ut labore et dolore magna \' +',
|
||
' \'aliqua.\''
|
||
].join('\n');
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(
|
||
'12345678901234567890123456789012345678901234567890',
|
||
{ compact: false, breakLength: 3 });
|
||
expect = '\'12345678901234567890123456789012345678901234567890\'';
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(
|
||
'12 45 78 01 34 67 90 23 56 89 123456789012345678901234567890',
|
||
{ compact: false, breakLength: 3 });
|
||
expect = [
|
||
'\'12 45 78 01 34 \' +',
|
||
' \'67 90 23 56 89 \' +',
|
||
' \'123456789012345678901234567890\''
|
||
].join('\n');
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(
|
||
'12 45 78 01 34 67 90 23 56 89 1234567890123 0',
|
||
{ compact: false, breakLength: 3 });
|
||
expect = [
|
||
'\'12 45 78 01 34 \' +',
|
||
' \'67 90 23 56 89 \' +',
|
||
' \'1234567890123 0\''
|
||
].join('\n');
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(
|
||
'12 45 78 01 34 67 90 23 56 89 12345678901234567 0',
|
||
{ compact: false, breakLength: 3 });
|
||
expect = [
|
||
'\'12 45 78 01 34 \' +',
|
||
' \'67 90 23 56 89 \' +',
|
||
' \'12345678901234567 \' +',
|
||
' \'0\''
|
||
].join('\n');
|
||
assert.strictEqual(out, expect);
|
||
|
||
o.a = () => {};
|
||
o.b = new Number(3);
|
||
out = util.inspect(o, { compact: false, breakLength: 3 });
|
||
expect = [
|
||
'{',
|
||
' a: [Function],',
|
||
' b: [Number: 3]',
|
||
'}'
|
||
].join('\n');
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(o, { compact: false, breakLength: 3, showHidden: true });
|
||
expect = [
|
||
'{',
|
||
' a: [Function] {',
|
||
' [length]: 0,',
|
||
" [name]: ''",
|
||
' },',
|
||
' b: [Number: 3]',
|
||
'}'
|
||
].join('\n');
|
||
assert.strictEqual(out, expect);
|
||
|
||
o[util.inspect.custom] = () => 42;
|
||
out = util.inspect(o, { compact: false, breakLength: 3 });
|
||
expect = '42';
|
||
assert.strictEqual(out, expect);
|
||
|
||
o[util.inspect.custom] = () => '12 45 78 01 34 67 90 23';
|
||
out = util.inspect(o, { compact: false, breakLength: 3 });
|
||
expect = '12 45 78 01 34 67 90 23';
|
||
assert.strictEqual(out, expect);
|
||
|
||
o[util.inspect.custom] = () => ({ a: '12 45 78 01 34 67 90 23' });
|
||
out = util.inspect(o, { compact: false, breakLength: 3 });
|
||
expect = '{\n a: \'12 45 78 01 34 \' +\n \'67 90 23\'\n}';
|
||
assert.strictEqual(out, expect);
|
||
}
|
||
|
||
{ // Test WeakMap
|
||
const obj = {};
|
||
const arr = [];
|
||
const weakMap = new WeakMap([[obj, arr], [arr, obj]]);
|
||
let out = util.inspect(weakMap, { showHidden: true });
|
||
let expect = 'WeakMap { [ [length]: 0 ] => {}, {} => [ [length]: 0 ] }';
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(weakMap);
|
||
expect = 'WeakMap { <items unknown> }';
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(weakMap, { maxArrayLength: 0, showHidden: true });
|
||
expect = 'WeakMap { ... more items }';
|
||
assert.strictEqual(out, expect);
|
||
|
||
weakMap.extra = true;
|
||
out = util.inspect(weakMap, { maxArrayLength: 1, showHidden: true });
|
||
// It is not possible to determine the output reliable.
|
||
expect = 'WeakMap { [ [length]: 0 ] => {}, ... more items, extra: true }';
|
||
const expectAlt = 'WeakMap { {} => [ [length]: 0 ], ... more items, ' +
|
||
'extra: true }';
|
||
assert(out === expect || out === expectAlt,
|
||
`Found "${out}" rather than "${expect}" or "${expectAlt}"`);
|
||
}
|
||
|
||
{ // Test WeakSet
|
||
const weakSet = new WeakSet([{}, [1]]);
|
||
let out = util.inspect(weakSet, { showHidden: true });
|
||
let expect = 'WeakSet { [ 1, [length]: 1 ], {} }';
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(weakSet);
|
||
expect = 'WeakSet { <items unknown> }';
|
||
assert.strictEqual(out, expect);
|
||
|
||
out = util.inspect(weakSet, { maxArrayLength: -2, showHidden: true });
|
||
expect = 'WeakSet { ... more items }';
|
||
assert.strictEqual(out, expect);
|
||
|
||
weakSet.extra = true;
|
||
out = util.inspect(weakSet, { maxArrayLength: 1, showHidden: true });
|
||
// It is not possible to determine the output reliable.
|
||
expect = 'WeakSet { {}, ... more items, extra: true }';
|
||
const expectAlt = 'WeakSet { [ 1, [length]: 1 ], ... more items, ' +
|
||
'extra: true }';
|
||
assert(out === expect || out === expectAlt,
|
||
`Found "${out}" rather than "${expect}" or "${expectAlt}"`);
|
||
}
|
||
|
||
{ // Test argument objects.
|
||
const args = (function() { return arguments; })('a');
|
||
assert.strictEqual(util.inspect(args), "[Arguments] { '0': 'a' }");
|
||
}
|
||
|
||
{
|
||
// Test that a long linked list can be inspected without throwing an error.
|
||
const list = {};
|
||
let head = list;
|
||
// The real cutoff value is closer to 1400 stack frames as of May 2018,
|
||
// but let's be generous here – even a linked listed of length 100k should be
|
||
// inspectable in some way.
|
||
for (let i = 0; i < 100000; i++)
|
||
head = head.next = {};
|
||
util.inspect(list);
|
||
}
|