2021-01-06 01:26:56 -06:00
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import {expect} from 'chai';
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import Trait from '../src/trait';
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class TestTrait extends Trait {
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static defaultParams() {
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return {
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asd: 'hello',
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sdf: 311,
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};
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}
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static defaultState() {
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return {
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foo: 69,
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bar: '420',
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};
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}
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}
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it('can set and override default params and state', () => {
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const testTrait = new TestTrait({
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params: {
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asd: 'boo',
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},
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state: {
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bar: 'yee',
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},
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});
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expect(testTrait.toJSON()).to.deep.equal({
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params: {
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asd: 'boo',
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sdf: 311,
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},
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state: {
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bar: 'yee',
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foo: 69,
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},
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});
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});
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it('tracks state differences', () => {
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const testTrait = new TestTrait();
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testTrait.state.foo = 420;
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expect(testTrait.stateDifferences()).to.deep.equal({
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foo: {
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old: 69,
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value: 420,
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},
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});
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testTrait.markAsClean();
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expect(testTrait.stateDifferences()).to.deep.equal({});
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});
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2021-01-12 22:36:44 -06:00
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it('can memoize listeners', () => {
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class ListenerTrait extends Trait {
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listeners() {
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return {
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heard: () => {},
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};
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}
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}
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const testTrait = new ListenerTrait();
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const memoized = testTrait.memoizedListeners();
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expect(Object.keys(testTrait.listeners())).to.deep.equal(Object.keys(memoized));
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expect(testTrait.memoizedListeners()).to.equal(testTrait.memoizedListeners());
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});
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