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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| import React from 'react'; | ||
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| import _ from 'react-virtualized-auto-sizer'; | ||
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| import {setupIntersectionObserverMock} from '../../../../test-utils/setupIntersectionObserverMock'; | ||
| import {cleanup, render, screen} from '../../../../test-utils/utils'; | ||
| import {List} from '../List'; | ||
| import type {ListProps} from '../types'; | ||
|
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| function setup(props: Partial<ListProps<string>> = {}) { | ||
| const baseProps: ListProps<string> = { | ||
| items: ['one', 'two', 'three', 'four', 'five', 'six', 'seven', 'eight'], | ||
| itemsHeight: 150, | ||
| itemHeight: 28, | ||
| filterable: false, | ||
| }; | ||
|
|
||
| return render( | ||
| <div> | ||
| <List<string> {...baseProps} {...props} /> | ||
| </div>, | ||
| ); | ||
| } | ||
|
|
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| const mockOnLoadMorFn = jest.fn(); | ||
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| beforeAll(() => { | ||
| setupIntersectionObserverMock(); | ||
| }); | ||
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| afterEach(() => { | ||
| cleanup(); | ||
| jest.clearAllMocks(); | ||
| }); | ||
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| describe('base List', () => { | ||
| it('should render loading indicator', () => { | ||
| setup({virtualized: false, onLoadMore: mockOnLoadMorFn, loading: true}); | ||
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| const loader = screen.getByTestId('list-loader'); | ||
| expect(loader).toBeInTheDocument(); | ||
| }); | ||
| it('should call onLoadMore callback when loading indicator is visible', () => { | ||
| setup({virtualized: false, onLoadMore: mockOnLoadMorFn, loading: true}); | ||
|
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| const loader = screen.getByTestId('list-loader'); | ||
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| expect(loader).toBeVisible(); | ||
| expect(mockOnLoadMorFn).toHaveBeenCalled(); | ||
| }); | ||
| }); | ||
|
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| describe('virtualized List', () => { | ||
| it('should render loading indicator', () => { | ||
| setup({virtualized: true, onLoadMore: mockOnLoadMorFn, loading: true}); | ||
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| const loader = screen.getByTestId('list-loader'); | ||
| expect(loader).toBeInTheDocument(); | ||
| }); | ||
|
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| it('should call onLoadMore callback when loading indicator is visible', () => { | ||
| setup({virtualized: true, onLoadMore: mockOnLoadMorFn, loading: true}); | ||
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| const loader = screen.getByTestId('list-loader'); | ||
| expect(loader).toBeVisible(); | ||
| expect(mockOnLoadMorFn).toHaveBeenCalled(); | ||
| }); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| export function setupIntersectionObserverMock({ | ||
| root = null, | ||
| rootMargin = '', | ||
| thresholds = [], | ||
| disconnect = () => null, | ||
| observe = () => null, | ||
| takeRecords = () => [ | ||
| { | ||
| boundingClientRect: {} as DOMRectReadOnly, | ||
| intersectionRatio: 1, | ||
| intersectionRect: {} as DOMRectReadOnly, | ||
| isIntersecting: true, | ||
| rootBounds: null, | ||
| target: {} as Element, | ||
| time: 1, | ||
| }, | ||
| ], | ||
| unobserve = () => null, | ||
| } = {}): void { | ||
| class MockIntersectionObserver implements IntersectionObserver { | ||
| readonly root: Element | null = root; | ||
| readonly rootMargin: string = rootMargin; | ||
| readonly thresholds: ReadonlyArray<number> = thresholds; | ||
| disconnect: () => void = disconnect; | ||
| observe: (target: Element) => void = observe; | ||
| takeRecords: () => IntersectionObserverEntry[] = takeRecords; | ||
| unobserve: (target: Element) => void = unobserve; | ||
|
|
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| constructor( | ||
| callback: ( | ||
| entries: IntersectionObserverEntry[], | ||
| observer: IntersectionObserver, | ||
| ) => void, | ||
| ) { | ||
| callback(takeRecords(), this); | ||
| } | ||
| } | ||
|
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| Object.defineProperty(window, 'IntersectionObserver', { | ||
| writable: true, | ||
| configurable: true, | ||
| value: MockIntersectionObserver, | ||
| }); | ||
|
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| Object.defineProperty(global, 'IntersectionObserver', { | ||
| writable: true, | ||
| configurable: true, | ||
| value: MockIntersectionObserver, | ||
| }); | ||
| } |