text: /* eslint-env jasmine, jest */
  
  import StyleSheet from '..';
  
  const isPlainObject = x => {
    const toString = Object.prototype.toString;
    let proto;
    /* eslint-disable */
    return (
      toString.call(x) === '[object Object]' &&
      ((proto = Object.getPrototypeOf(x)), proto === null || proto === Object.getPrototypeOf({}))
    );
    /* eslint-enable */
  };
  
  describe('StyleSheet', () => {
    test('absoluteFill', () => {
      expect(Number.isInteger(StyleSheet.absoluteFill) === true).toBeTruthy();
    });
  
    test('absoluteFillObject', () => {
      expect(isPlainObject(StyleSheet.absoluteFillObject) === true).toBeTruthy();
    });
  
    describe('compose', () => {
      test('returns array when neither style is falsey', () => {
        expect(StyleSheet.compose(1, 2)).toEqual([1, 2]);
      });
      test('returns style1 when style2 is falsey', () => {
        expect(StyleSheet.compose(1, null)).toBe(1);
      });
      test('returns style2 when style1 is falsey', () => {
        expect(StyleSheet.compose(null, 2)).toBe(2);
      });
    });
  
    describe('create', () => {
      test('replaces styles with numbers', () => {
        const style = StyleSheet.create({ root: { position: 'absolute' } });
        expect(Number.isInteger(style.root) === true).toBeTruthy();
      });
    });
  
    test('flatten', () => {
      expect(typeof StyleSheet.flatten === 'function').toBeTruthy();
    });
  
    test('hairlineWidth', () => {
      expect(Number.isInteger(StyleSheet.hairlineWidth) === true).toBeTruthy();
    });
  });
  