deno.land / x / lodash@4.17.19 / vendor / underscore / test / utility.js
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QUnit.module('Utility', {
beforeEach: function() { templateSettings = _.clone(_.templateSettings); },
afterEach: function() { _.templateSettings = templateSettings; }
});
if (typeof this == 'object') { QUnit.test('noConflict', function(assert) { var underscore = _.noConflict(); assert.equal(underscore.identity(1), 1); if (typeof require != 'function') { assert.equal(this._, void 0, 'global underscore is removed'); this._ = underscore; } else if (typeof global !== 'undefined') { delete global._; } }); }
if (typeof require == 'function') { QUnit.test('noConflict (node vm)', function(assert) { assert.expect(2); var done = assert.async(); var fs = require('fs'); var vm = require('vm'); var filename = __dirname + '/../underscore.js'; fs.readFile(filename, function(err, content){ var sandbox = vm.createScript( content + 'this.underscore = this._.noConflict();', filename ); var context = {_: 'oldvalue'}; sandbox.runInNewContext(context); assert.equal(context._, 'oldvalue'); assert.equal(context.underscore.VERSION, _.VERSION);
done(); }); }); }
QUnit.test('#750 - Return _ instance.', function(assert) { assert.expect(2); var instance = _([]); assert.strictEqual(_(instance), instance); assert.strictEqual(new _(instance), instance); });
QUnit.test('identity', function(assert) { var stooge = {name: 'moe'}; assert.equal(_.identity(stooge), stooge, 'stooge is the same as his identity'); });
QUnit.test('constant', function(assert) { var stooge = {name: 'moe'}; assert.equal(_.constant(stooge)(), stooge, 'should create a function that returns stooge'); });
QUnit.test('noop', function(assert) { assert.strictEqual(_.noop('curly', 'larry', 'moe'), void 0, 'should always return undefined'); });
QUnit.test('property', function(assert) { var stooge = {name: 'moe'}; assert.equal(_.property('name')(stooge), 'moe', 'should return the property with the given name'); assert.equal(_.property('name')(null), void 0, 'should return undefined for null values'); assert.equal(_.property('name')(void 0), void 0, 'should return undefined for undefined values'); });
QUnit.test('propertyOf', function(assert) { var stoogeRanks = _.propertyOf({curly: 2, moe: 1, larry: 3}); assert.equal(stoogeRanks('curly'), 2, 'should return the property with the given name'); assert.equal(stoogeRanks(null), void 0, 'should return undefined for null values'); assert.equal(stoogeRanks(void 0), void 0, 'should return undefined for undefined values');
function MoreStooges() { this.shemp = 87; } MoreStooges.prototype = {curly: 2, moe: 1, larry: 3}; var moreStoogeRanks = _.propertyOf(new MoreStooges()); assert.equal(moreStoogeRanks('curly'), 2, 'should return properties from further up the prototype chain');
var nullPropertyOf = _.propertyOf(null); assert.equal(nullPropertyOf('curly'), void 0, 'should return undefined when obj is null');
var undefPropertyOf = _.propertyOf(void 0); assert.equal(undefPropertyOf('curly'), void 0, 'should return undefined when obj is undefined'); });
QUnit.test('random', function(assert) { var array = _.range(1000); var min = Math.pow(2, 31); var max = Math.pow(2, 62);
assert.ok(_.every(array, function() { return _.random(min, max) >= min; }), 'should produce a random number greater than or equal to the minimum number');
assert.ok(_.some(array, function() { return _.random(Number.MAX_VALUE) > 0; }), 'should produce a random number when passed `Number.MAX_VALUE`'); });
QUnit.test('now', function(assert) { var diff = _.now() - new Date().getTime(); assert.ok(diff <= 0 && diff > -5, 'Produces the correct time in milliseconds');//within 5ms });
QUnit.test('uniqueId', function(assert) { var ids = [], i = 0; while (i++ < 100) ids.push(_.uniqueId()); assert.equal(_.uniq(ids).length, ids.length, 'can generate a globally-unique stream of ids'); });
QUnit.test('times', function(assert) { var vals = []; _.times(3, function(i) { vals.push(i); }); assert.deepEqual(vals, [0, 1, 2], 'is 0 indexed'); // vals = []; _(3).times(function(i) { vals.push(i); }); assert.deepEqual(vals, [0, 1, 2], 'works as a wrapper'); // collects return values assert.deepEqual([0, 1, 2], _.times(3, function(i) { return i; }), 'collects return values');
assert.deepEqual(_.times(0, _.identity), []); assert.deepEqual(_.times(-1, _.identity), []); assert.deepEqual(_.times(parseFloat('-Infinity'), _.identity), []); });
QUnit.test('mixin', function(assert) { var ret = _.mixin({ myReverse: function(string) { return string.split('').reverse().join(''); } }); assert.equal(ret, _, 'returns the _ object to facilitate chaining'); assert.equal(_.myReverse('panacea'), 'aecanap', 'mixed in a function to _'); assert.equal(_('champ').myReverse(), 'pmahc', 'mixed in a function to the OOP wrapper'); });
QUnit.test('_.escape', function(assert) { assert.equal(_.escape(null), ''); });
QUnit.test('_.unescape', function(assert) { var string = 'Curly & Moe'; assert.equal(_.unescape(null), ''); assert.equal(_.unescape(_.escape(string)), string); assert.equal(_.unescape(string), string, 'don\'t unescape unnecessarily'); });
// Don't care what they escape them to just that they're escaped and can be unescaped QUnit.test('_.escape & unescape', function(assert) { // test & (&) seperately obviously var escapeCharacters = ['<', '>', '"', '\'', '`'];
_.each(escapeCharacters, function(escapeChar) { var s = 'a ' + escapeChar + ' string escaped'; var e = _.escape(s); assert.notEqual(s, e, escapeChar + ' is escaped'); assert.equal(s, _.unescape(e), escapeChar + ' can be unescaped');
s = 'a ' + escapeChar + escapeChar + escapeChar + 'some more string' + escapeChar; e = _.escape(s);
assert.equal(e.indexOf(escapeChar), -1, 'can escape multiple occurances of ' + escapeChar); assert.equal(_.unescape(e), s, 'multiple occurrences of ' + escapeChar + ' can be unescaped'); });
// handles multiple escape characters at once var joiner = ' other stuff '; var allEscaped = escapeCharacters.join(joiner); allEscaped += allEscaped; assert.ok(_.every(escapeCharacters, function(escapeChar) { return allEscaped.indexOf(escapeChar) !== -1; }), 'handles multiple characters'); assert.ok(allEscaped.indexOf(joiner) >= 0, 'can escape multiple escape characters at the same time');
// test & -> & var str = 'some string & another string & yet another'; var escaped = _.escape(str);
assert.notStrictEqual(escaped.indexOf('&'), -1, 'handles & aka &'); assert.equal(_.unescape(str), str, 'can unescape &'); });
QUnit.test('template', function(assert) { var basicTemplate = _.template("<%= thing %> is gettin' on my noives!"); var result = basicTemplate({thing: 'This'}); assert.equal(result, "This is gettin' on my noives!", 'can do basic attribute interpolation');
var sansSemicolonTemplate = _.template('A <% this %> B'); assert.equal(sansSemicolonTemplate(), 'A B');
var backslashTemplate = _.template('<%= thing %> is \\ridanculous'); assert.equal(backslashTemplate({thing: 'This'}), 'This is \\ridanculous');
var escapeTemplate = _.template('<%= a ? "checked=\\"checked\\"" : "" %>'); assert.equal(escapeTemplate({a: true}), 'checked="checked"', 'can handle slash escapes in interpolations.');
var fancyTemplate = _.template('<ul><% ' + ' for (var key in people) { ' + '%><li><%= people[key] %></li><% } %></ul>'); result = fancyTemplate({people: {moe: 'Moe', larry: 'Larry', curly: 'Curly'}}); assert.equal(result, '<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>', 'can run arbitrary javascript in templates');
var escapedCharsInJavascriptTemplate = _.template('<ul><% _.each(numbers.split("\\n"), function(item) { %><li><%= item %></li><% }) %></ul>'); result = escapedCharsInJavascriptTemplate({numbers: 'one\ntwo\nthree\nfour'}); assert.equal(result, '<ul><li>one</li><li>two</li><li>three</li><li>four</li></ul>', 'Can use escaped characters (e.g. \\n) in JavaScript');
var namespaceCollisionTemplate = _.template('<%= pageCount %> <%= thumbnails[pageCount] %> <% _.each(thumbnails, function(p) { %><div class="thumbnail" rel="<%= p %>"></div><% }); %>'); result = namespaceCollisionTemplate({ pageCount: 3, thumbnails: { 1: 'p1-thumbnail.gif', 2: 'p2-thumbnail.gif', 3: 'p3-thumbnail.gif' } }); assert.equal(result, '3 p3-thumbnail.gif <div class="thumbnail" rel="p1-thumbnail.gif"></div><div class="thumbnail" rel="p2-thumbnail.gif"></div><div class="thumbnail" rel="p3-thumbnail.gif"></div>');
var noInterpolateTemplate = _.template('<div><p>Just some text. Hey, I know this is silly but it aids consistency.</p></div>'); result = noInterpolateTemplate(); assert.equal(result, '<div><p>Just some text. Hey, I know this is silly but it aids consistency.</p></div>');
var quoteTemplate = _.template("It's its, not it's"); assert.equal(quoteTemplate({}), "It's its, not it's");
var quoteInStatementAndBody = _.template('<% ' + " if(foo == 'bar'){ " + "%>Statement quotes and 'quotes'.<% } %>"); assert.equal(quoteInStatementAndBody({foo: 'bar'}), "Statement quotes and 'quotes'.");
var withNewlinesAndTabs = _.template('This\n\t\tis: <%= x %>.\n\tok.\nend.'); assert.equal(withNewlinesAndTabs({x: 'that'}), 'This\n\t\tis: that.\n\tok.\nend.');
var template = _.template('<i><%- value %></i>'); result = template({value: '<script>'}); assert.equal(result, '<i><script></i>');
var stooge = { name: 'Moe', template: _.template("I'm <%= this.name %>") }; assert.equal(stooge.template(), "I'm Moe");
template = _.template('\n ' + ' <%\n ' + ' // a comment\n ' + ' if (data) { data += 12345; }; %>\n ' + ' <li><%= data %></li>\n ' ); assert.equal(template({data: 12345}).replace(/\s/g, ''), '<li>24690</li>');
_.templateSettings = { evaluate: /\{\{([\s\S]+?)\}\}/g, interpolate: /\{\{=([\s\S]+?)\}\}/g };
var custom = _.template('<ul>{{ for (var key in people) { }}<li>{{= people[key] }}</li>{{ } }}</ul>'); result = custom({people: {moe: 'Moe', larry: 'Larry', curly: 'Curly'}}); assert.equal(result, '<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>', 'can run arbitrary javascript in templates');
var customQuote = _.template("It's its, not it's"); assert.equal(customQuote({}), "It's its, not it's");
quoteInStatementAndBody = _.template("{{ if(foo == 'bar'){ }}Statement quotes and 'quotes'.{{ } }}"); assert.equal(quoteInStatementAndBody({foo: 'bar'}), "Statement quotes and 'quotes'.");
_.templateSettings = { evaluate: /<\?([\s\S]+?)\?>/g, interpolate: /<\?=([\s\S]+?)\?>/g };
var customWithSpecialChars = _.template('<ul><? for (var key in people) { ?><li><?= people[key] ?></li><? } ?></ul>'); result = customWithSpecialChars({people: {moe: 'Moe', larry: 'Larry', curly: 'Curly'}}); assert.equal(result, '<ul><li>Moe</li><li>Larry</li><li>Curly</li></ul>', 'can run arbitrary javascript in templates');
var customWithSpecialCharsQuote = _.template("It's its, not it's"); assert.equal(customWithSpecialCharsQuote({}), "It's its, not it's");
quoteInStatementAndBody = _.template("<? if(foo == 'bar'){ ?>Statement quotes and 'quotes'.<? } ?>"); assert.equal(quoteInStatementAndBody({foo: 'bar'}), "Statement quotes and 'quotes'.");
_.templateSettings = { interpolate: /\{\{(.+?)\}\}/g };
var mustache = _.template('Hello {{planet}}!'); assert.equal(mustache({planet: 'World'}), 'Hello World!', 'can mimic mustache.js');
var templateWithNull = _.template('a null undefined {{planet}}'); assert.equal(templateWithNull({planet: 'world'}), 'a null undefined world', 'can handle missing escape and evaluate settings'); });
QUnit.test('_.template provides the generated function source, when a SyntaxError occurs', function(assert) { var source; try { _.template('<b><%= if x %></b>'); } catch (ex) { source = ex.source; } assert.ok(/__p/.test(source)); });
QUnit.test('_.template handles \\u2028 & \\u2029', function(assert) { var tmpl = _.template('<p>\u2028<%= "\\u2028\\u2029" %>\u2029</p>'); assert.strictEqual(tmpl(), '<p>\u2028\u2028\u2029\u2029</p>'); });
QUnit.test('result calls functions and returns primitives', function(assert) { var obj = {w: '', x: 'x', y: function(){ return this.x; }}; assert.strictEqual(_.result(obj, 'w'), ''); assert.strictEqual(_.result(obj, 'x'), 'x'); assert.strictEqual(_.result(obj, 'y'), 'x'); assert.strictEqual(_.result(obj, 'z'), void 0); assert.strictEqual(_.result(null, 'x'), void 0); });
QUnit.test('result returns a default value if object is null or undefined', function(assert) { assert.strictEqual(_.result(null, 'b', 'default'), 'default'); assert.strictEqual(_.result(void 0, 'c', 'default'), 'default'); assert.strictEqual(_.result(''.match('missing'), 1, 'default'), 'default'); });
QUnit.test('result returns a default value if property of object is missing', function(assert) { assert.strictEqual(_.result({d: null}, 'd', 'default'), null); assert.strictEqual(_.result({e: false}, 'e', 'default'), false); });
QUnit.test('result only returns the default value if the object does not have the property or is undefined', function(assert) { assert.strictEqual(_.result({}, 'b', 'default'), 'default'); assert.strictEqual(_.result({d: void 0}, 'd', 'default'), 'default'); });
QUnit.test('result does not return the default if the property of an object is found in the prototype', function(assert) { var Foo = function(){}; Foo.prototype.bar = 1; assert.strictEqual(_.result(new Foo, 'bar', 2), 1); });
QUnit.test('result does use the fallback when the result of invoking the property is undefined', function(assert) { var obj = {a: function() {}}; assert.strictEqual(_.result(obj, 'a', 'failed'), void 0); });
QUnit.test('result fallback can use a function', function(assert) { var obj = {a: [1, 2, 3]}; assert.strictEqual(_.result(obj, 'b', _.constant(5)), 5); assert.strictEqual(_.result(obj, 'b', function() { return this.a; }), obj.a, 'called with context'); });
QUnit.test('_.templateSettings.variable', function(assert) { var s = '<%=data.x%>'; var data = {x: 'x'}; var tmp = _.template(s, {variable: 'data'}); assert.strictEqual(tmp(data), 'x'); _.templateSettings.variable = 'data'; assert.strictEqual(_.template(s)(data), 'x'); });
QUnit.test('#547 - _.templateSettings is unchanged by custom settings.', function(assert) { assert.notOk(_.templateSettings.variable); _.template('', {}, {variable: 'x'}); assert.notOk(_.templateSettings.variable); });
QUnit.test('#556 - undefined template variables.', function(assert) { var template = _.template('<%=x%>'); assert.strictEqual(template({x: null}), ''); assert.strictEqual(template({x: void 0}), '');
var templateEscaped = _.template('<%-x%>'); assert.strictEqual(templateEscaped({x: null}), ''); assert.strictEqual(templateEscaped({x: void 0}), '');
var templateWithProperty = _.template('<%=x.foo%>'); assert.strictEqual(templateWithProperty({x: {}}), ''); assert.strictEqual(templateWithProperty({x: {}}), '');
var templateWithPropertyEscaped = _.template('<%-x.foo%>'); assert.strictEqual(templateWithPropertyEscaped({x: {}}), ''); assert.strictEqual(templateWithPropertyEscaped({x: {}}), ''); });
QUnit.test('interpolate evaluates code only once.', function(assert) { assert.expect(2); var count = 0; var template = _.template('<%= f() %>'); template({f: function(){ assert.notOk(count++); }});
var countEscaped = 0; var templateEscaped = _.template('<%- f() %>'); templateEscaped({f: function(){ assert.notOk(countEscaped++); }}); });
QUnit.test('#746 - _.template settings are not modified.', function(assert) { assert.expect(1); var settings = {}; _.template('', null, settings); assert.deepEqual(settings, {}); });
QUnit.test('#779 - delimeters are applied to unescaped text.', function(assert) { assert.expect(1); var template = _.template('<<\nx\n>>', null, {evaluate: /<<(.*?)>>/g}); assert.strictEqual(template(), '<<\nx\n>>'); });
}());
lodash
Version Info
5 years ago
External Dependencies
No external dependencies 🎉
