FAIL  __tests__/components/Login.spec.js
  ● Test suite failed to run

    TypeError: Cannot read property 'number' of undefined
      
      at Object.<anonymous> (node_modules/react-native-mock/build/propTypes/LayoutPropTypes.js:21:37)
      at Object.<anonymous> (node_modules/react-native-mock/build/propTypes/ViewStylePropTypes.js:6:22)
      at Object.<anonymous> (node_modules/react-native-mock/build/components/View.js:6:25)

"dependencies": {
    "react": "^16.0.0-alpha.13",
    "react-native": "^0.45.1",
    "react-native-image-picker": "0.26.3",
    "react-native-linear-gradient": "2.0.0",
    "react-native-material-textfield": "0.6.0",
    "react-native-mock": "^0.3.1",
    "react-native-scrollable-tab-view": "0.6.6",
    "react-native-snackbar": "0.3.6",
    "react-native-vector-icons": "4.2.0",
    "react-navigation": "1.0.0-beta.11",
    "react-redux": "5.0.5",
    "redux-saga": "0.15.3",
    "styled-components": "^2.1.0"
  },
  "devDependencies": {
    "babel-jest": "20.0.0",
    "babel-preset-react-native": "1.9.2",
    "chai": "4.0.2",
    "chai-as-promised": "7.0.0",
    "colors": "1.1.2",
    "cors": "2.8.3",
    "cucumber": "2.0.0-rc.9",
    "debug": "2.6.8",
    "express": "4.15.3",
    "jest": "20.0.0",
    "lodash": "4.17.4",
    "react-test-renderer": "16.0.0-alpha.6",
    "redux": "3.6.0",
    "standard": "10.0.2",
    "wd": "1.2.0"
  },