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98 lines
3.4 KiB
98 lines
3.4 KiB
import koArray from 'app/client/lib/koArray';
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import {createObsArray} from 'app/client/lib/koArrayWrap';
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import {assert} from 'chai';
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import {Holder} from 'grainjs';
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import * as sinon from 'sinon';
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function assertResetSingleCall(spy: sinon.SinonSpy, ...args: any[]): void {
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sinon.assert.calledOnce(spy);
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sinon.assert.calledOn(spy, undefined);
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sinon.assert.calledWithExactly(spy, ...args);
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spy.resetHistory();
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}
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describe('koArrayWrap', function() {
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it('should map splice changes correctly', function() {
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const kArr = koArray([1, 2, 3]);
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const holder = Holder.create(null);
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const gArr = createObsArray(holder, kArr);
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assert.deepEqual(gArr.get(), [1, 2, 3]);
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const spy = sinon.spy();
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gArr.addListener(spy);
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// Push to array.
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kArr.push(4, 5);
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assert.deepEqual(kArr.peek(), [1, 2, 3, 4, 5]);
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assert.deepEqual(gArr.get(), [1, 2, 3, 4, 5]);
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assertResetSingleCall(spy, gArr.get(), gArr.get(), {deleted: [], start: 3, numAdded: 2});
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// Splice to remove and add.
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kArr.splice(1, 1, 11, 12);
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assert.deepEqual(kArr.peek(), [1, 11, 12, 3, 4, 5]);
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assert.deepEqual(gArr.get(), [1, 11, 12, 3, 4, 5]);
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assertResetSingleCall(spy, gArr.get(), gArr.get(), {start: 1, numAdded: 2, deleted: [2]});
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// Splice to just remove.
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kArr.splice(2, 2);
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assert.deepEqual(kArr.peek(), [1, 11, 4, 5]);
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assert.deepEqual(gArr.get(), [1, 11, 4, 5]);
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assertResetSingleCall(spy, gArr.get(), gArr.get(), {start: 2, numAdded: 0, deleted: [12, 3]});
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// Splice to just add.
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kArr.splice(3, 0, 21, 22);
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assert.deepEqual(kArr.peek(), [1, 11, 4, 21, 22, 5]);
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assert.deepEqual(gArr.get(), [1, 11, 4, 21, 22, 5]);
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assertResetSingleCall(spy, gArr.get(), gArr.get(), {start: 3, numAdded: 2, deleted: []});
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// Splice to make empty.
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kArr.splice(0);
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assert.deepEqual(kArr.peek(), []);
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assert.deepEqual(gArr.get(), []);
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assertResetSingleCall(spy, gArr.get(), gArr.get(), {start: 0, numAdded: 0, deleted: [1, 11, 4, 21, 22, 5]});
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// Unshift an empty array.
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kArr.unshift(6, 7);
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assert.deepEqual(kArr.peek(), [6, 7]);
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assert.deepEqual(gArr.get(), [6, 7]);
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assertResetSingleCall(spy, gArr.get(), gArr.get(), {start: 0, numAdded: 2, deleted: []});
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});
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it('should handle array assignment', function() {
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const kArr = koArray([1, 2, 3]);
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const holder = Holder.create(null);
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const gArr = createObsArray(holder, kArr);
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assert.deepEqual(gArr.get(), [1, 2, 3]);
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const spy = sinon.spy();
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gArr.addListener(spy);
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// Set a new array.
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kArr.assign([-1, -2]);
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assert.deepEqual(kArr.peek(), [-1, -2]);
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assert.deepEqual(gArr.get(), [-1, -2]);
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assertResetSingleCall(spy, gArr.get(), gArr.get(), {start: 0, numAdded: 2, deleted: [1, 2, 3]});
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});
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it('should unsubscribe when disposed', function() {
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const kArr = koArray([1, 2, 3]);
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const holder = Holder.create(null);
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const gArr = createObsArray(holder, kArr);
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assert.deepEqual(gArr.get(), [1, 2, 3]);
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const spy = sinon.spy();
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gArr.addListener(spy);
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kArr.push(4);
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assertResetSingleCall(spy, gArr.get(), gArr.get(), {deleted: [], start: 3, numAdded: 1});
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const countSubs = kArr.getObservable().getSubscriptionsCount();
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holder.dispose();
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assert.equal(gArr.isDisposed(), true);
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assert.equal(kArr.getObservable().getSubscriptionsCount(), countSubs - 1);
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kArr.push(5);
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sinon.assert.notCalled(spy);
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});
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});
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