1 <!doctype html> 2 <!-- 3 @license 4 Copyright (c) 2015 The Polymer Project Authors. All rights reserved. 5 This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt 6 The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt 7 The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt 8 Code distributed by Google as part of the polymer project is also 9 subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt 10 --> 11 12 <html> 13 <head> 14 15 <title>iron-meta</title> 16 <meta charset="utf-8"> 17 <meta name="viewport" content="width=device-width, initial-scale=1.0"> 18 19 <script src="../../webcomponentsjs/webcomponents-lite.js"></script> 20 <script src="../../web-component-tester/browser.js"></script> 21 <script src="../../test-fixture/test-fixture-mocha.js"></script> 22 23 <link rel="import" href="../iron-meta.html"> 24 <link rel="import" href="../../test-fixture/test-fixture.html"> 25 26 </head> 27 <body> 28 29 <test-fixture id="TrivialMeta"> 30 <template> 31 <iron-meta self key="info"></iron-meta> 32 </template> 33 </test-fixture> 34 35 <test-fixture id="ManyMetas"> 36 <template> 37 <iron-meta self key="default1"></iron-meta> 38 <iron-meta self key="default2"></iron-meta> 39 <iron-meta self key="default3"></iron-meta> 40 </template> 41 </test-fixture> 42 43 <test-fixture id="DifferentTypedMetas"> 44 <template> 45 <iron-meta self type="foo" key="foobarKey"></iron-meta> 46 <iron-meta self type="bar" key="foobarKey"></iron-meta> 47 <iron-meta self key="defaultKey"></iron-meta> 48 </template> 49 </test-fixture> 50 51 <test-fixture id="ClashingMetas"> 52 <template> 53 <iron-meta self key="baz"></iron-meta> 54 <iron-meta self key="baz"></iron-meta> 55 </template> 56 </test-fixture> 57 58 <script> 59 suite('<iron-meta>', function () { 60 suite('basic behavior', function () { 61 var meta; 62 63 setup(function () { 64 meta = fixture('TrivialMeta'); 65 }); 66 67 teardown(function () { 68 meta.key = null; 69 }); 70 71 test('uses itself as the default value', function () { 72 expect(meta.value).to.be.equal(meta); 73 }); 74 75 test('can be assigned alternative values', function () { 76 meta.value = 'foobar'; 77 78 expect(meta.list[0]).to.be.equal('foobar'); 79 }); 80 81 test('can access same-type meta values by key', function () { 82 expect(meta.byKey(meta.key)).to.be.equal(meta.value); 83 }); 84 85 test('yields a list of same-type meta data', function () { 86 expect(meta.list).to.be.ok; 87 expect(meta.list.length).to.be.equal(1); 88 expect(meta.list[0]).to.be.equal(meta); 89 }); 90 }); 91 92 suite('many same-typed metas', function () { 93 var metas; 94 95 setup(function () { 96 metas = fixture('ManyMetas'); 97 }); 98 99 teardown(function () { 100 metas.forEach(function (meta) { 101 meta.key = null; 102 }); 103 }); 104 105 test('all cache all meta values', function () { 106 metas.forEach(function (meta, index) { 107 expect(meta.list.length).to.be.equal(metas.length); 108 expect(meta.list[index].value).to.be.equal(meta.value); 109 }); 110 }); 111 112 test('can be unregistered individually', function () { 113 metas[0].key = null; 114 115 expect(metas[0].list.length).to.be.equal(2); 116 expect(metas[0].list).to.be.deep.equal([metas[1], metas[2]]) 117 }); 118 119 test('can access each others value by key', function () { 120 expect(metas[0].byKey('default2')).to.be.equal(metas[1].value); 121 }); 122 }); 123 124 suite('different-typed metas', function () { 125 var metas; 126 127 setup(function () { 128 metas = fixture('DifferentTypedMetas'); 129 }); 130 131 teardown(function () { 132 metas.forEach(function (meta) { 133 meta.key = null; 134 }); 135 }); 136 137 test('cache their values separately', function () { 138 var fooMeta = metas[0]; 139 var barMeta = metas[1]; 140 141 expect(fooMeta.value).to.not.be.equal(barMeta.value); 142 expect(fooMeta.byKey('foobarKey')).to.be.equal(fooMeta.value); 143 expect(barMeta.byKey('foobarKey')).to.be.equal(barMeta.value); 144 }); 145 146 test('cannot access values of other types', function () { 147 var defaultMeta = metas[2]; 148 149 expect(defaultMeta.byKey('foobarKey')).to.be.equal(undefined); 150 }); 151 152 test('only list values of their type', function () { 153 metas.forEach(function (meta) { 154 expect(meta.list.length).to.be.equal(1); 155 expect(meta.list[0]).to.be.equal(meta.value); 156 }) 157 }); 158 }); 159 160 suite('metas with clashing keys', function () { 161 var metaPair; 162 163 setup(function () { 164 metaPair = fixture('ClashingMetas'); 165 }); 166 167 teardown(function () { 168 metaPair.forEach(function (meta) { 169 meta.key = null; 170 }); 171 }); 172 173 test('let the last value win registration against the key', function () { 174 var registeredValue = metaPair[0].byKey(metaPair[0].key); 175 var firstValue = metaPair[0].value; 176 var secondValue = metaPair[1].value; 177 178 expect(registeredValue).to.not.be.equal(firstValue); 179 expect(registeredValue).to.be.equal(secondValue); 180 }); 181 }); 182 183 suite('singleton', function () { 184 185 test('only one ironmeta created', function () { 186 var first = Polymer.IronMeta.getIronMeta(); 187 var second = Polymer.IronMeta.getIronMeta(); 188 expect(first).to.be.equal(second); 189 }); 190 }); 191 }); 192 </script> 193 194 </body> 195 </html> 196
