react-native/Libraries/Utilities/__mocks__/PixelRatio.js

25 lines
643 B
JavaScript

/**
* Copyright 2004-present Facebook. All Rights Reserved.
*/
'use strict';
const PixelRatio = {
get: jest.genMockFunction().mockReturnValue(2),
getFontScale: jest.genMockFunction().mockImplementation(
() => PixelRatio.get()
),
getPixelSizeForLayoutSize: jest.genMockFunction().mockImplementation(
layoutSize => Math.round(layoutSize * PixelRatio.get())
),
roundToNearestPixel: jest.genMockFunction().mockImplementation(
layoutSize => {
const ratio = PixelRatio.get();
return Math.round(layoutSize * ratio) / ratio;
}
),
startDetecting: jest.genMockFunction(),
};
module.exports = PixelRatio;