mirror of
https://github.com/facebook/react-native.git
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Rujin Cao
bc1bc36a0c
Differential Revision: D39905970 fbshipit-source-id: 020901c455628bfbb7163adf0a7b7672fc39123a
51 lines
1.6 KiB
JavaScript
51 lines
1.6 KiB
JavaScript
/**
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* Copyright (c) Meta Platforms, Inc. and 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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* @format
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* @oncall react_native
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*/
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'use strict';
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const processAspectRatio = require('../processAspectRatio');
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describe('processAspectRatio', () => {
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it('should accept numbers', () => {
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expect(processAspectRatio(1)).toBe(1);
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expect(processAspectRatio(0)).toBe(0);
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expect(processAspectRatio(1.5)).toBe(1.5);
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});
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it('should accept string numbers', () => {
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expect(processAspectRatio('1')).toBe(1);
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expect(processAspectRatio('0')).toBe(0);
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expect(processAspectRatio('1.5')).toBe(1.5);
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expect(processAspectRatio('+1.5')).toBe(1.5);
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expect(processAspectRatio(' 1')).toBe(1);
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expect(processAspectRatio(' 0 ')).toBe(0);
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});
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it('should accept `auto`', () => {
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expect(processAspectRatio('auto')).toBe(undefined);
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expect(processAspectRatio(' auto')).toBe(undefined);
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expect(processAspectRatio(' auto ')).toBe(undefined);
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});
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it('should accept ratios', () => {
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expect(processAspectRatio('+1/1')).toBe(1);
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expect(processAspectRatio('0 / 10')).toBe(0);
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expect(processAspectRatio('117/ 13')).toBe(9);
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expect(processAspectRatio('1.5 /1.2')).toBe(1.25);
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expect(processAspectRatio('1/0')).toBe(Infinity);
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});
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it('should not accept invalid formats', () => {
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expect(() => processAspectRatio('0a')).toThrowErrorMatchingSnapshot();
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expect(() => processAspectRatio('1 / 1 1')).toThrowErrorMatchingSnapshot();
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expect(() => processAspectRatio('auto 1/1')).toThrowErrorMatchingSnapshot();
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});
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});
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