65 lines
2.2 KiB
JavaScript
65 lines
2.2 KiB
JavaScript
import { blank, present } from 'helpers/qunit-helpers';
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import Singleton from 'discourse/mixins/singleton';
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module("mixin:singleton");
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test("current", function() {
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var DummyModel = Ember.Object.extend({});
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DummyModel.reopenClass(Singleton);
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var current = DummyModel.current();
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present(current, 'current returns the current instance');
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equal(current, DummyModel.current(), 'calling it again returns the same instance');
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notEqual(current, DummyModel.create({}), 'we can create other instances that are not the same as current');
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});
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test("currentProp reading", function() {
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var DummyModel = Ember.Object.extend({});
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DummyModel.reopenClass(Singleton);
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var current = DummyModel.current();
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blank(DummyModel.currentProp('evil'), 'by default attributes are blank');
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current.set('evil', 'trout');
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equal(DummyModel.currentProp('evil'), 'trout', 'after changing the instance, the value is set');
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});
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test("currentProp writing", function() {
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var DummyModel = Ember.Object.extend({});
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DummyModel.reopenClass(Singleton);
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blank(DummyModel.currentProp('adventure'), 'by default attributes are blank');
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var result = DummyModel.currentProp('adventure', 'time');
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equal(result, 'time', 'it returns the new value');
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equal(DummyModel.currentProp('adventure'), 'time', 'after calling currentProp the value is set');
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DummyModel.currentProp('count', 0);
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equal(DummyModel.currentProp('count'), 0, 'we can set the value to 0');
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DummyModel.currentProp('adventure', null);
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equal(DummyModel.currentProp('adventure'), null, 'we can set the value to null');
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});
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test("createCurrent", function() {
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var Shoe = Ember.Object.extend({});
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Shoe.reopenClass(Singleton, {
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createCurrent: function() {
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return Shoe.create({toes: 5});
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}
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});
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equal(Shoe.currentProp('toes'), 5, 'it created the class using `createCurrent`');
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});
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test("createCurrent that returns null", function() {
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var Missing = Ember.Object.extend({});
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Missing.reopenClass(Singleton, {
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createCurrent: function() {
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return null;
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}
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});
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blank(Missing.current(), "it doesn't return an instance");
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blank(Missing.currentProp('madeup'), "it won't raise an error asking for a property. Will just return null.");
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});
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