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487 lines
16 KiB
487 lines
16 KiB
'use strict';
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var common = require('../common');
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var assert = require('assert');
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var util = require('util');
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assert.equal(util.inspect(1), '1');
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assert.equal(util.inspect(false), 'false');
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assert.equal(util.inspect(''), "''");
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assert.equal(util.inspect('hello'), "'hello'");
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assert.equal(util.inspect(function() {}), '[Function]');
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assert.equal(util.inspect(undefined), 'undefined');
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assert.equal(util.inspect(null), 'null');
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assert.equal(util.inspect(/foo(bar\n)?/gi), '/foo(bar\\n)?/gi');
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assert.equal(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').toString());
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assert.equal(util.inspect('\n\u0001'), "'\\n\\u0001'");
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assert.equal(util.inspect([]), '[]');
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assert.equal(util.inspect(Object.create([])), 'Array {}');
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assert.equal(util.inspect([1, 2]), '[ 1, 2 ]');
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assert.equal(util.inspect([1, [2, 3]]), '[ 1, [ 2, 3 ] ]');
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assert.equal(util.inspect({}), '{}');
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assert.equal(util.inspect({a: 1}), '{ a: 1 }');
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assert.equal(util.inspect({a: function() {}}), '{ a: [Function] }');
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assert.equal(util.inspect({a: 1, b: 2}), '{ a: 1, b: 2 }');
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assert.equal(util.inspect({'a': {}}), '{ a: {} }');
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assert.equal(util.inspect({'a': {'b': 2}}), '{ a: { b: 2 } }');
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assert.equal(util.inspect({'a': {'b': { 'c': { 'd': 2 }}}}),
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'{ a: { b: { c: [Object] } } }');
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assert.equal(util.inspect({'a': {'b': { 'c': { 'd': 2 }}}}, false, null),
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'{ a: { b: { c: { d: 2 } } } }');
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assert.equal(util.inspect([1, 2, 3], true), '[ 1, 2, 3, [length]: 3 ]');
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assert.equal(util.inspect({'a': {'b': { 'c': 2}}}, false, 0),
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'{ a: [Object] }');
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assert.equal(util.inspect({'a': {'b': { 'c': 2}}}, false, 1),
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'{ a: { b: [Object] } }');
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assert.equal(util.inspect(Object.create({},
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{visible: {value: 1, enumerable: true}, hidden: {value: 2}})),
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'{ visible: 1 }'
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);
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// Due to the hash seed randomization it's not deterministic the order that
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// the following ways this hash is displayed.
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// See http://codereview.chromium.org/9124004/
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var out = util.inspect(Object.create({},
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{visible: {value: 1, enumerable: true}, hidden: {value: 2}}), true);
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if (out !== '{ [hidden]: 2, visible: 1 }' &&
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out !== '{ visible: 1, [hidden]: 2 }') {
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assert.ok(false);
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}
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// Objects without prototype
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var out = util.inspect(Object.create(null,
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{ name: {value: 'Tim', enumerable: true},
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hidden: {value: 'secret'}}), true);
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if (out !== "{ [hidden]: 'secret', name: 'Tim' }" &&
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out !== "{ name: 'Tim', [hidden]: 'secret' }") {
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assert(false);
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}
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assert.equal(
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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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'{ name: \'Tim\' }'
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);
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// Dynamic properties
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assert.equal(util.inspect({get readonly() {}}),
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'{ readonly: [Getter] }');
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assert.equal(util.inspect({get readwrite() {}, set readwrite(val) {}}),
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'{ readwrite: [Getter/Setter] }');
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assert.equal(util.inspect({set writeonly(val) {}}),
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'{ writeonly: [Setter] }');
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var value = {};
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value['a'] = value;
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assert.equal(util.inspect(value), '{ a: [Circular] }');
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// Array with dynamic properties
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value = [1, 2, 3];
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value.__defineGetter__('growingLength', function() {
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this.push(true); return this.length;
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});
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assert.equal(util.inspect(value), '[ 1, 2, 3, growingLength: [Getter] ]');
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// Function with properties
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value = function() {};
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value.aprop = 42;
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assert.equal(util.inspect(value), '{ [Function] aprop: 42 }');
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// Regular expressions with properties
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value = /123/ig;
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value.aprop = 42;
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assert.equal(util.inspect(value), '{ /123/gi aprop: 42 }');
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// Dates with properties
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value = new Date('Sun, 14 Feb 2010 11:48:40 GMT');
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value.aprop = 42;
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assert.equal(util.inspect(value), '{ Sun, 14 Feb 2010 11:48:40 GMT aprop: 42 }'
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);
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// test the internal isDate implementation
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var Date2 = require('vm').runInNewContext('Date');
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var d = new Date2();
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var orig = util.inspect(d);
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Date2.prototype.foo = 'bar';
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var after = util.inspect(d);
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assert.equal(orig, after);
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// test positive/negative zero
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assert.equal(util.inspect(0), '0');
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assert.equal(util.inspect(-0), '-0');
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// test for sparse array
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var a = ['foo', 'bar', 'baz'];
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assert.equal(util.inspect(a), '[ \'foo\', \'bar\', \'baz\' ]');
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delete a[1];
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assert.equal(util.inspect(a), '[ \'foo\', , \'baz\' ]');
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assert.equal(util.inspect(a, true), '[ \'foo\', , \'baz\', [length]: 3 ]');
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assert.equal(util.inspect(new Array(5)), '[ , , , , ]');
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// test for Array constructor in different context
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const Debug = require('vm').runInDebugContext('Debug');
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var map = new Map();
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map.set(1, 2);
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var mirror = Debug.MakeMirror(map.entries(), true);
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var vals = mirror.preview();
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var valsOutput = [];
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for (const o of vals) {
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valsOutput.push(o);
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}
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assert.strictEqual(util.inspect(valsOutput), '[ [ 1, 2 ] ]');
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// test for property descriptors
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var getter = Object.create(null, {
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a: {
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get: function() { return 'aaa'; }
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}
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});
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var setter = Object.create(null, {
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b: {
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set: function() {}
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}
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});
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var getterAndSetter = Object.create(null, {
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c: {
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get: function() { return 'ccc'; },
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set: function() {}
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}
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});
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assert.equal(util.inspect(getter, true), '{ [a]: [Getter] }');
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assert.equal(util.inspect(setter, true), '{ [b]: [Setter] }');
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assert.equal(util.inspect(getterAndSetter, true), '{ [c]: [Getter/Setter] }');
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// exceptions should print the error message, not '{}'
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assert.equal(util.inspect(new Error()), '[Error]');
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assert.equal(util.inspect(new Error('FAIL')), '[Error: FAIL]');
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assert.equal(util.inspect(new TypeError('FAIL')), '[TypeError: FAIL]');
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assert.equal(util.inspect(new SyntaxError('FAIL')), '[SyntaxError: FAIL]');
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try {
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undef();
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} catch (e) {
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assert.equal(util.inspect(e), '[ReferenceError: undef is not defined]');
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}
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var ex = util.inspect(new Error('FAIL'), true);
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assert.ok(ex.indexOf('[Error: FAIL]') != -1);
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assert.ok(ex.indexOf('[stack]') != -1);
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assert.ok(ex.indexOf('[message]') != -1);
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// GH-1941
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// should not throw:
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assert.equal(util.inspect(Object.create(Date.prototype)), 'Date {}');
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// GH-1944
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assert.doesNotThrow(function() {
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var d = new Date();
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d.toUTCString = null;
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util.inspect(d);
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});
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assert.doesNotThrow(function() {
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var r = /regexp/;
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r.toString = null;
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util.inspect(r);
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});
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// bug with user-supplied inspect function returns non-string
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assert.doesNotThrow(function() {
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util.inspect([{
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inspect: function() { return 123; }
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}]);
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});
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// GH-2225
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var x = { inspect: util.inspect };
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assert.ok(util.inspect(x).indexOf('inspect') != -1);
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// util.inspect should not display the escaped value of a key.
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var w = {
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'\\': 1,
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'\\\\': 2,
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'\\\\\\': 3,
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'\\\\\\\\': 4,
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};
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var y = ['a', 'b', 'c'];
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y['\\\\\\'] = 'd';
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assert.ok(util.inspect(w),
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'{ \'\\\': 1, \'\\\\\': 2, \'\\\\\\\': 3, \'\\\\\\\\\': 4 }');
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assert.ok(util.inspect(y), '[ \'a\', \'b\', \'c\', \'\\\\\\\': \'d\' ]');
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// util.inspect.styles and util.inspect.colors
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function test_color_style(style, input, implicit) {
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var color_name = util.inspect.styles[style];
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var color = ['', ''];
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if (util.inspect.colors[color_name])
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color = util.inspect.colors[color_name];
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var without_color = util.inspect(input, false, 0, false);
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var with_color = util.inspect(input, false, 0, true);
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var expect = '\u001b[' + color[0] + 'm' + without_color +
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'\u001b[' + color[1] + 'm';
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assert.equal(with_color, expect, 'util.inspect color for style ' + style);
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}
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test_color_style('special', function() {});
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test_color_style('number', 123.456);
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test_color_style('boolean', true);
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test_color_style('undefined', undefined);
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test_color_style('null', null);
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test_color_style('string', 'test string');
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test_color_style('date', new Date());
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test_color_style('regexp', /regexp/);
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// an object with "hasOwnProperty" overwritten should not throw
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assert.doesNotThrow(function() {
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util.inspect({
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hasOwnProperty: null
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});
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});
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// new API, accepts an "options" object
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var subject = { foo: 'bar', hello: 31, a: { b: { c: { d: 0 } } } };
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Object.defineProperty(subject, 'hidden', { enumerable: false, value: null });
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assert(util.inspect(subject, { showHidden: false }).indexOf('hidden') === -1);
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assert(util.inspect(subject, { showHidden: true }).indexOf('hidden') !== -1);
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assert(util.inspect(subject, { colors: false }).indexOf('\u001b[32m') === -1);
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assert(util.inspect(subject, { colors: true }).indexOf('\u001b[32m') !== -1);
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assert(util.inspect(subject, { depth: 2 }).indexOf('c: [Object]') !== -1);
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assert(util.inspect(subject, { depth: 0 }).indexOf('a: [Object]') !== -1);
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assert(util.inspect(subject, { depth: null }).indexOf('{ d: 0 }') !== -1);
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// "customInspect" option can enable/disable calling inspect() on objects
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subject = { inspect: function() { return 123; } };
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assert(util.inspect(subject,
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{ customInspect: true }).indexOf('123') !== -1);
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assert(util.inspect(subject,
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{ customInspect: true }).indexOf('inspect') === -1);
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assert(util.inspect(subject,
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{ customInspect: false }).indexOf('123') === -1);
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assert(util.inspect(subject,
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{ customInspect: false }).indexOf('inspect') !== -1);
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// custom inspect() functions should be able to return other Objects
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subject.inspect = function() { return { foo: 'bar' }; };
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assert.equal(util.inspect(subject), '{ foo: \'bar\' }');
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subject.inspect = function(depth, opts) {
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assert.strictEqual(opts.customInspectOptions, true);
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};
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util.inspect(subject, { customInspectOptions: true });
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// util.inspect with "colors" option should produce as many lines as without it
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function test_lines(input) {
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var count_lines = function(str) {
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return (str.match(/\n/g) || []).length;
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};
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var without_color = util.inspect(input);
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var with_color = util.inspect(input, {colors: true});
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assert.equal(count_lines(without_color), count_lines(with_color));
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}
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test_lines([1, 2, 3, 4, 5, 6, 7]);
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test_lines(function() {
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var big_array = [];
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for (var i = 0; i < 100; i++) {
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big_array.push(i);
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}
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return big_array;
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}());
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test_lines({foo: 'bar', baz: 35, b: {a: 35}});
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test_lines({
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foo: 'bar',
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baz: 35,
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b: {a: 35},
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very_long_key: 'very_long_value',
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even_longer_key: ['with even longer value in array']
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});
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// test boxed primitives output the correct values
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assert.equal(util.inspect(new String('test')), '[String: \'test\']');
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assert.equal(util.inspect(new Boolean(false)), '[Boolean: false]');
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assert.equal(util.inspect(new Boolean(true)), '[Boolean: true]');
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assert.equal(util.inspect(new Number(0)), '[Number: 0]');
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assert.equal(util.inspect(new Number(-0)), '[Number: -0]');
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assert.equal(util.inspect(new Number(-1.1)), '[Number: -1.1]');
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assert.equal(util.inspect(new Number(13.37)), '[Number: 13.37]');
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// test boxed primitives with own properties
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var str = new String('baz');
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str.foo = 'bar';
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assert.equal(util.inspect(str), '{ [String: \'baz\'] foo: \'bar\' }');
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var bool = new Boolean(true);
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bool.foo = 'bar';
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assert.equal(util.inspect(bool), '{ [Boolean: true] foo: \'bar\' }');
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var num = new Number(13.37);
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num.foo = 'bar';
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assert.equal(util.inspect(num), '{ [Number: 13.37] foo: \'bar\' }');
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// test es6 Symbol
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if (typeof Symbol !== 'undefined') {
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assert.equal(util.inspect(Symbol()), 'Symbol()');
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assert.equal(util.inspect(Symbol(123)), 'Symbol(123)');
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assert.equal(util.inspect(Symbol('hi')), 'Symbol(hi)');
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assert.equal(util.inspect([Symbol()]), '[ Symbol() ]');
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assert.equal(util.inspect({ foo: Symbol() }), '{ foo: Symbol() }');
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var options = { showHidden: true };
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var subject = {};
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subject[Symbol('symbol')] = 42;
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assert.equal(util.inspect(subject), '{}');
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assert.equal(util.inspect(subject, options), '{ [Symbol(symbol)]: 42 }');
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subject = [1, 2, 3];
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subject[Symbol('symbol')] = 42;
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assert.equal(util.inspect(subject), '[ 1, 2, 3 ]');
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assert.equal(util.inspect(subject, options),
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'[ 1, 2, 3, [length]: 3, [Symbol(symbol)]: 42 ]');
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}
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// test Set
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assert.equal(util.inspect(new Set()), 'Set {}');
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assert.equal(util.inspect(new Set([1, 2, 3])), 'Set { 1, 2, 3 }');
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var set = new Set(['foo']);
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set.bar = 42;
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assert.equal(util.inspect(set, true), 'Set { \'foo\', [size]: 1, bar: 42 }');
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// test Map
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assert.equal(util.inspect(new Map()), 'Map {}');
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assert.equal(util.inspect(new Map([[1, 'a'], [2, 'b'], [3, 'c']])),
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'Map { 1 => \'a\', 2 => \'b\', 3 => \'c\' }');
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var map = new Map([['foo', null]]);
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map.bar = 42;
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assert.equal(util.inspect(map, true),
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'Map { \'foo\' => null, [size]: 1, bar: 42 }');
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// test Promise
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assert.equal(util.inspect(Promise.resolve(3)), 'Promise { 3 }');
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assert.equal(util.inspect(Promise.reject(3)), 'Promise { <rejected> 3 }');
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assert.equal(util.inspect(new Promise(function() {})), 'Promise { <pending> }');
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var promise = Promise.resolve('foo');
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promise.bar = 42;
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assert.equal(util.inspect(promise), 'Promise { \'foo\', bar: 42 }');
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// Make sure it doesn't choke on polyfills. Unlike Set/Map, there is no standard
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// interface to synchronously inspect a Promise, so our techniques only work on
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// a bonafide native Promise.
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var oldPromise = Promise;
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global.Promise = function() { this.bar = 42; };
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assert.equal(util.inspect(new Promise()), '{ bar: 42 }');
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global.Promise = oldPromise;
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// Map/Set Iterators
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var m = new Map([['foo', 'bar']]);
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assert.strictEqual(util.inspect(m.keys()), 'MapIterator { \'foo\' }');
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assert.strictEqual(util.inspect(m.values()), 'MapIterator { \'bar\' }');
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assert.strictEqual(util.inspect(m.entries()),
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'MapIterator { [ \'foo\', \'bar\' ] }');
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// make sure the iterator doesn't get consumed
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var keys = m.keys();
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assert.strictEqual(util.inspect(keys), 'MapIterator { \'foo\' }');
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assert.strictEqual(util.inspect(keys), 'MapIterator { \'foo\' }');
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var s = new Set([1, 3]);
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assert.strictEqual(util.inspect(s.keys()), 'SetIterator { 1, 3 }');
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assert.strictEqual(util.inspect(s.values()), 'SetIterator { 1, 3 }');
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assert.strictEqual(util.inspect(s.entries()),
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'SetIterator { [ 1, 1 ], [ 3, 3 ] }');
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// make sure the iterator doesn't get consumed
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keys = s.keys();
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assert.strictEqual(util.inspect(keys), 'SetIterator { 1, 3 }');
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assert.strictEqual(util.inspect(keys), 'SetIterator { 1, 3 }');
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// Test alignment of items in container
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// Assumes that the first numeric character is the start of an item.
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function checkAlignment(container) {
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var lines = util.inspect(container).split('\n');
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var pos;
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lines.forEach(function(line) {
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var npos = line.search(/\d/);
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if (npos !== -1) {
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if (pos !== undefined)
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assert.equal(pos, npos, 'container items not aligned');
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pos = npos;
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}
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});
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}
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var big_array = [];
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for (var i = 0; i < 100; i++) {
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big_array.push(i);
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}
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checkAlignment(big_array);
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checkAlignment(function() {
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var obj = {};
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big_array.forEach(function(v) {
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obj[v] = null;
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});
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return obj;
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}());
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checkAlignment(new Set(big_array));
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checkAlignment(new Map(big_array.map(function(y) { return [y, null]; })));
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// Test display of constructors
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class ObjectSubclass {}
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class ArraySubclass extends Array {}
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class SetSubclass extends Set {}
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class MapSubclass extends Map {}
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class PromiseSubclass extends Promise {}
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var x = new ObjectSubclass();
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x.foo = 42;
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assert.equal(util.inspect(x),
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'ObjectSubclass { foo: 42 }');
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assert.equal(util.inspect(new ArraySubclass(1, 2, 3)),
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'ArraySubclass [ 1, 2, 3 ]');
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assert.equal(util.inspect(new SetSubclass([1, 2, 3])),
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'SetSubclass { 1, 2, 3 }');
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assert.equal(util.inspect(new MapSubclass([['foo', 42]])),
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'MapSubclass { \'foo\' => 42 }');
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assert.equal(util.inspect(new PromiseSubclass(function() {})),
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'PromiseSubclass { <pending> }');
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// Corner cases.
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var x = { constructor: 42 };
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assert.equal(util.inspect(x), '{ constructor: 42 }');
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var x = {};
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Object.defineProperty(x, 'constructor', {
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get: function() {
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throw new Error('should not access constructor');
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},
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enumerable: true
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});
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assert.equal(util.inspect(x), '{ constructor: [Getter] }');
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var x = new (function() {});
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assert.equal(util.inspect(x), '{}');
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var x = Object.create(null);
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assert.equal(util.inspect(x), '{}');
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