react-native/Libraries/StyleSheet/__tests__/processTransform-test.js

/**
 * Copyright (c) 2015-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @emails oncall+react_native
 */
'use strict';

const processTransform = require('processTransform');

describe('processTransform', () => {
  describe('validation', () => {
    it('should accept an empty array', () => {
      processTransform([]);
    });

    it('should accept a simple valid transform', () => {
      processTransform([
        {scale: 0.5},
        {translateX: 10},
        {translateY: 20},
        {rotate: '10deg'},
      ]);
    });

    it('should throw on object with multiple properties', () => {
      expect(() => processTransform([{scale: 0.5, translateY: 10}])).toThrowErrorMatchingSnapshot();
    });

    it('should throw on invalid transform property', () => {
      expect(() => processTransform([{translateW: 10}])).toThrowErrorMatchingSnapshot();
    });

    it('should throw when not passing an array to an array prop', () => {
      expect(() => processTransform([{matrix: 'not-a-matrix'}])).toThrowErrorMatchingSnapshot();
      expect(() => processTransform([{translate: 10}])).toThrowErrorMatchingSnapshot();
    });

    it('should accept a valid matrix', () => {
      processTransform([{matrix: [1, 1, 1, 1, 1, 1, 1, 1, 1]}]);
      processTransform([{matrix: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]}]);
    });

    it('should throw when passing a matrix of the wrong size', () => {
      expect(() => processTransform([{matrix: [1, 1, 1, 1]}])).toThrowErrorMatchingSnapshot();
    });

    it('should accept a valid translate', () => {
      processTransform([{translate: [1, 1]}]);
      processTransform([{translate: [1, 1, 1]}]);
    });

    it('should throw when passing a translate of the wrong size', () => {
      expect(() => processTransform([{translate: [1]}])).toThrowErrorMatchingSnapshot();
      expect(() => processTransform([{translate: [1, 1, 1, 1]}])).toThrowErrorMatchingSnapshot();
    });

    it('should throw when passing an invalid value to a number prop', () => {
      expect(() => processTransform([{translateY: '20deg'}])).toThrowErrorMatchingSnapshot();
      expect(() => processTransform([{scale: {x: 10, y: 10}}])).toThrowErrorMatchingSnapshot();
      expect(() => processTransform([{perspective: []}])).toThrowErrorMatchingSnapshot();
    });

    it('should throw when passing a perspective of 0', () => {
      expect(() => processTransform([{perspective: 0}])).toThrowErrorMatchingSnapshot();
    });

    it('should accept an angle in degrees or radians', () => {
      processTransform([{skewY: '10deg'}]);
      processTransform([{rotateX: '1.16rad'}]);
    });

    it('should throw when passing an invalid angle prop', () => {
      expect(() => processTransform([{rotate: 10}])).toThrowErrorMatchingSnapshot();
      expect(() => processTransform([{skewX: '10drg'}])).toThrowErrorMatchingSnapshot();
    });

    it('should throw when passing an Animated.Value', () => {
      expect(() => processTransform([{rotate: {getValue: () => {}}}])).toThrowErrorMatchingSnapshot();
    });
  });
});