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chrome-devtools-frontend

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// Copyright 2019 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import * as UI from './legacy.js'; describe('ListModel', () => { it('can be instantiated correctly without a list of items', () => { const model = new UI.ListModel.ListModel(); assert.deepEqual([...model], []); }); it('can be instantiated correctly with a list of items', () => { const model = new UI.ListModel.ListModel([4, 5, 6]); assert.deepEqual([...model], [4, 5, 6]); }); it('supports replacing all list elements', () => { const model = new UI.ListModel.ListModel(); model.replaceAll([0, 1, 2]); assert.deepEqual([...model], [0, 1, 2]); }); it('supports replacing a range of list elements', () => { const model = new UI.ListModel.ListModel([0, 1, 2]); model.replaceRange(0, 1, [5, 6, 7]); assert.deepEqual([...model], [5, 6, 7, 1, 2]); }); it('supports inserting new list elements', () => { const model = new UI.ListModel.ListModel([5, 6, 7, 1, 2]); model.insert(model.length, 10); assert.deepEqual([...model], [5, 6, 7, 1, 2, 10]); }); it('supports removing list elements', () => { const model = new UI.ListModel.ListModel([5, 6, 7, 1, 2, 10]); model.remove(model.length - 1); assert.deepEqual([...model], [5, 6, 7, 1, 2]); }); it('supports removing list elements', () => { const model = new UI.ListModel.ListModel([5, 6, 7, 1, 2]); model.remove(4); assert.deepEqual([...model], [5, 6, 7, 1]); }); it('supports replacing list elements in place', () => { const model = new UI.ListModel.ListModel([5, 6, 7, 1]); model.insert(1, 8); assert.deepEqual([...model], [5, 8, 6, 7, 1]); }); it('supports replacing list elements in place', () => { const model = new UI.ListModel.ListModel([ 0, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 4, 5, 6, 27, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 28, 29, ]); model.replaceRange(0, 29, []); assert.deepEqual([...model], [29]); }); it('fires an event when elements are replaced', () => { const model = new UI.ListModel.ListModel([0, 1, 2]); let eventData!: {index: number, removed: number[], inserted: number, keepSelectedIndex?: boolean|undefined}; model.addEventListener( UI.ListModel.Events.ITEMS_REPLACED, (event: {data: UI.ListModel.ItemsReplacedEvent<number>}) => { eventData = event.data; }); model.replaceRange(0, 1, [5, 6, 7]); assert.deepEqual([...model], [5, 6, 7, 1, 2]); assert.deepEqual(eventData, { index: 0, removed: [0], inserted: 3, keepSelectedIndex: undefined, }); }); });