62 lines
1.8 KiB
JavaScript
62 lines
1.8 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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*
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* @format
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* @emails oncall+react_native
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*/
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'use strict';
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const React = require('React');
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const ReactTestRenderer = require('react-test-renderer');
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const FlatList = require('FlatList');
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describe('FlatList', () => {
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it('renders simple list', () => {
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const component = ReactTestRenderer.create(
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<FlatList
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data={[{key: 'i1'}, {key: 'i2'}, {key: 'i3'}]}
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renderItem={({item}) => <item value={item.key} />}
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/>,
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);
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expect(component).toMatchSnapshot();
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});
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it('renders empty list', () => {
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const component = ReactTestRenderer.create(
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<FlatList data={[]} renderItem={({item}) => <item value={item.key} />} />,
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);
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expect(component).toMatchSnapshot();
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});
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it('renders null list', () => {
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const component = ReactTestRenderer.create(
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<FlatList
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data={undefined}
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renderItem={({item}) => <item value={item.key} />}
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/>,
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);
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expect(component).toMatchSnapshot();
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});
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it('renders all the bells and whistles', () => {
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const component = ReactTestRenderer.create(
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<FlatList
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ItemSeparatorComponent={() => <separator />}
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ListEmptyComponent={() => <empty />}
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ListFooterComponent={() => <footer />}
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ListHeaderComponent={() => <header />}
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data={new Array(5).fill().map((_, ii) => ({id: String(ii)}))}
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keyExtractor={(item, index) => item.id}
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getItemLayout={({index}) => ({length: 50, offset: index * 50})}
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numColumns={2}
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refreshing={false}
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onRefresh={jest.fn()}
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renderItem={({item}) => <item value={item.id} />}
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/>,
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);
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expect(component).toMatchSnapshot();
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});
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});
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