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File Content: `index.test.tsx`

// Copyright (c) 2017 Uber Technologies, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import { render, screen } from '@testing-library/react';
import React from 'react';

import ListView, { TListViewProps } from './index';

const DATA_LENGTH = 10;

function getHeight(index: number) {
  return index * 2 + 2;
}

function Item(props: React.HTMLProps<HTMLDivElement>) {
  const { children, ...rest } = props;
  return <div {...rest}>{children}</div>;
}

const renderItem: TListViewProps['itemRenderer'] = (itemKey, styles, itemIndex, attrs) => {
  return (
    <Item key={itemKey} style={styles} {...attrs} data-testid="item">
      {itemIndex}
    </Item>
  );
};

const props = {
  dataLength: DATA_LENGTH,
  getIndexFromKey: Number,
  getKeyFromIndex: String,
  initialDraw: 5,
  itemHeightGetter: getHeight,
  itemRenderer: renderItem,
  itemsWrapperClassName: 'SomeClassName',
  viewBuffer: 10,
  viewBufferMin: 5,
  windowScroller: true,
  redraw: {},
};

describe('<ListView />', () => {
  beforeEach(() => {
    render(<ListView {...props} />);
  });

  it('renders without exploding', () => {
    expect(screen.getByTestId('ListView')).toBeInTheDocument();
  });

  it('renders the correct number of items', () => {
    expect(screen.getAllByTestId('item').length).toBe(DATA_LENGTH);
  });
});

Name	Size	Permission
Positions.test.ts	8043 bytes	0644
Positions.tsx	5812 bytes	0644
index.test.tsx	1816 bytes	0644
index.tsx	17341 bytes	0644

File Content: index.test.tsx

File Content: `index.test.tsx`