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Diffstat (limited to 'node_modules/util/test/node/inspect.js')
-rw-r--r-- | node_modules/util/test/node/inspect.js | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/node_modules/util/test/node/inspect.js b/node_modules/util/test/node/inspect.js new file mode 100644 index 000000000..f766d1170 --- /dev/null +++ b/node_modules/util/test/node/inspect.js @@ -0,0 +1,195 @@ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + + + + +var assert = require('assert'); +var util = require('../../'); + +// test the internal isDate implementation +var Date2 = require('vm').runInNewContext('Date'); +var d = new Date2(); +var orig = util.inspect(d); +Date2.prototype.foo = 'bar'; +var after = util.inspect(d); +assert.equal(orig, after); + +// test for sparse array +var a = ['foo', 'bar', 'baz']; +assert.equal(util.inspect(a), '[ \'foo\', \'bar\', \'baz\' ]'); +delete a[1]; +assert.equal(util.inspect(a), '[ \'foo\', , \'baz\' ]'); +assert.equal(util.inspect(a, true), '[ \'foo\', , \'baz\', [length]: 3 ]'); +assert.equal(util.inspect(new Array(5)), '[ , , , , ]'); + +// test for property descriptors +var getter = Object.create(null, { + a: { + get: function() { return 'aaa'; } + } +}); +var setter = Object.create(null, { + b: { + set: function() {} + } +}); +var getterAndSetter = Object.create(null, { + c: { + get: function() { return 'ccc'; }, + set: function() {} + } +}); +assert.equal(util.inspect(getter, true), '{ [a]: [Getter] }'); +assert.equal(util.inspect(setter, true), '{ [b]: [Setter] }'); +assert.equal(util.inspect(getterAndSetter, true), '{ [c]: [Getter/Setter] }'); + +// exceptions should print the error message, not '{}' +assert.equal(util.inspect(new Error()), '[Error]'); +assert.equal(util.inspect(new Error('FAIL')), '[Error: FAIL]'); +assert.equal(util.inspect(new TypeError('FAIL')), '[TypeError: FAIL]'); +assert.equal(util.inspect(new SyntaxError('FAIL')), '[SyntaxError: FAIL]'); +try { + undef(); +} catch (e) { + assert.equal(util.inspect(e), '[ReferenceError: undef is not defined]'); +} +var ex = util.inspect(new Error('FAIL'), true); +assert.ok(ex.indexOf('[Error: FAIL]') != -1); +assert.ok(ex.indexOf('[stack]') != -1); +assert.ok(ex.indexOf('[message]') != -1); + +// GH-1941 +// should not throw: +assert.equal(util.inspect(Object.create(Date.prototype)), '{}'); + +// GH-1944 +assert.doesNotThrow(function() { + var d = new Date(); + d.toUTCString = null; + util.inspect(d); +}); + +assert.doesNotThrow(function() { + var r = /regexp/; + r.toString = null; + util.inspect(r); +}); + +// bug with user-supplied inspect function returns non-string +assert.doesNotThrow(function() { + util.inspect([{ + inspect: function() { return 123; } + }]); +}); + +// GH-2225 +var x = { inspect: util.inspect }; +assert.ok(util.inspect(x).indexOf('inspect') != -1); + +// util.inspect.styles and util.inspect.colors +function test_color_style(style, input, implicit) { + var color_name = util.inspect.styles[style]; + var color = ['', '']; + if(util.inspect.colors[color_name]) + color = util.inspect.colors[color_name]; + + var without_color = util.inspect(input, false, 0, false); + var with_color = util.inspect(input, false, 0, true); + var expect = '\u001b[' + color[0] + 'm' + without_color + + '\u001b[' + color[1] + 'm'; + assert.equal(with_color, expect, 'util.inspect color for style '+style); +} + +test_color_style('special', function(){}); +test_color_style('number', 123.456); +test_color_style('boolean', true); +test_color_style('undefined', undefined); +test_color_style('null', null); +test_color_style('string', 'test string'); +test_color_style('date', new Date); +test_color_style('regexp', /regexp/); + +// an object with "hasOwnProperty" overwritten should not throw +assert.doesNotThrow(function() { + util.inspect({ + hasOwnProperty: null + }); +}); + +// new API, accepts an "options" object +var subject = { foo: 'bar', hello: 31, a: { b: { c: { d: 0 } } } }; +Object.defineProperty(subject, 'hidden', { enumerable: false, value: null }); + +assert(util.inspect(subject, { showHidden: false }).indexOf('hidden') === -1); +assert(util.inspect(subject, { showHidden: true }).indexOf('hidden') !== -1); +assert(util.inspect(subject, { colors: false }).indexOf('\u001b[32m') === -1); +assert(util.inspect(subject, { colors: true }).indexOf('\u001b[32m') !== -1); +assert(util.inspect(subject, { depth: 2 }).indexOf('c: [Object]') !== -1); +assert(util.inspect(subject, { depth: 0 }).indexOf('a: [Object]') !== -1); +assert(util.inspect(subject, { depth: null }).indexOf('{ d: 0 }') !== -1); + +// "customInspect" option can enable/disable calling inspect() on objects +subject = { inspect: function() { return 123; } }; + +assert(util.inspect(subject, { customInspect: true }).indexOf('123') !== -1); +assert(util.inspect(subject, { customInspect: true }).indexOf('inspect') === -1); +assert(util.inspect(subject, { customInspect: false }).indexOf('123') === -1); +assert(util.inspect(subject, { customInspect: false }).indexOf('inspect') !== -1); + +// custom inspect() functions should be able to return other Objects +subject.inspect = function() { return { foo: 'bar' }; }; + +assert.equal(util.inspect(subject), '{ foo: \'bar\' }'); + +subject.inspect = function(depth, opts) { + assert.strictEqual(opts.customInspectOptions, true); +}; + +util.inspect(subject, { customInspectOptions: true }); + +// util.inspect with "colors" option should produce as many lines as without it +function test_lines(input) { + var count_lines = function(str) { + return (str.match(/\n/g) || []).length; + } + + var without_color = util.inspect(input); + var with_color = util.inspect(input, {colors: true}); + assert.equal(count_lines(without_color), count_lines(with_color)); +} + +test_lines([1, 2, 3, 4, 5, 6, 7]); +test_lines(function() { + var big_array = []; + for (var i = 0; i < 100; i++) { + big_array.push(i); + } + return big_array; +}()); +test_lines({foo: 'bar', baz: 35, b: {a: 35}}); +test_lines({ + foo: 'bar', + baz: 35, + b: {a: 35}, + very_long_key: 'very_long_value', + even_longer_key: ['with even longer value in array'] +}); |