【发布时间】：2019-10-18 13:01:19
【问题描述】：
我正在尝试为我的 React Native 项目设置酶测试。我在各种情况下都遇到了各种错误。
场景 1
当我尝试为我的一个组件设置测试时，我收到此错误：
/Users/TuzMacbookPro2017/Development/QMG-local/APPS/ELECTRO/node_modules/@expo/vector-icons/Zocial.js:1
({"Object.<anonymous>":function(module,exports,require,__dirname,__filename,global,jest){import glyphMap from './vendor/react-native-vector-icons/glyphmaps/Zocial.json';
^^^^^^^^
SyntaxError: Unexpected identifier
一些相关文件
测试文件
import React from "react";
import renderer from "react-test-renderer";
import { mount, ReactWrapper } from "enzyme";
import LoginView from "../src/screens/LoginView";
describe("LoginView", () => {
const wrapper = mount(<LoginView />);
it("can get through the damn test file", () => {
expect(true).toBe(true);
});
});
jest.config.js
module.exports = {
setupFilesAfterEnv: ["<rootDir>setup-tests.js"],
transformIgnorePatterns: [
"node_modules/(?!(jest-)?react-native|@react-native-community|react-native-elements)"
],
preset: "react-native"
};
babel.config.js
module.exports = function(api) {
api.cache(true);
return {
presets: ["babel-preset-expo"]
};
};
package.json
{
"main": "node_modules/expo/AppEntry.js",
"scripts": {
"start": "expo start",
"android": "expo start --android",
"ios": "expo start --ios",
"eject": "expo eject",
"test": "node ./node_modules/jest/bin/jest.js --watchAll --bail",
"testff": "node ./node_modules/jest/bin/jest.js --watchAll --bail"
},
"jest": {
"preset": "jest-expo",
"testEnvironment": "node",
"globals": {
"__DEV__": true
}
},
"dependencies": {
"@expo/samples": "2.1.1",
"@react-native-community/async-storage": "^1.3.4",
"axios": "^0.18.0",
"expo": "^32.0.0",
"flow-bin": "^0.98.1",
"native-base": "^2.12.1",
"pluralize": "^7.0.0",
"react": "16.5.0",
"react-dom": "^16.8.6",
"react-native": "0.57",
"react-native-elements": "^1.1.0",
"react-native-geocoding": "^0.3.0",
"react-native-global-font": "^1.0.2",
"react-native-indicators": "^0.13.0",
"react-native-keyboard-aware-scrollview": "^2.0.0",
"react-native-material-dropdown": "^0.11.1",
"react-native-render-html": "^4.1.2",
"react-native-uuid": "^1.4.9",
"react-navigation": "^3.9.1",
"react-redux": "^6.0.1",
"redux": "^4.0.1",
"redux-saga": "^1.0.2",
"redux-test-utils": "^0.3.0",
"redux-thunk": "^2.3.0",
"sugar": "^2.0.6"
},
"devDependencies": {
"@babel/core": "^7.4.5",
"@babel/polyfill": "^7.4.4",
"@babel/preset-env": "^7.4.5",
"@babel/preset-react": "^7.0.0",
"axios-mock-adapter": "^1.16.0",
"babel-core": "^6.26.3",
"babel-eslint": "^10.0.1",
"babel-jest": "^24.8.0",
"babel-preset-expo": "^5.0.0",
"babel-preset-react-native": "^4.0.1",
"enzyme": "^3.9.0",
"enzyme-adapter-react-16": "^1.12.1",
"fetch-mock": "^7.3.3",
"jest": "^24.8.0",
"jest-enzyme": "^7.0.2",
"jest-expo": "^32.0.0",
"jsdom": "^14.1.0",
"mock-async-storage": "^2.1.0",
"prettier-eslint": "^8.8.2",
"react-test-renderer": "^16.8.6",
"redux-mock-store": "^1.5.3",
"redux-saga-tester": "^1.0.460"
},
"private": true,
"rnpm": {
"assets": [
"./assets/fonts"
]
}
}
setup.tests.js
import Adapter from "enzyme-adapter-react-16";
import { configure } from "enzyme";
import jsdom from "jsdom";
import "react-native";
import "jest-enzyme";
function setUpDomEnvironment() {
const { JSDOM } = jsdom;
const dom = new JSDOM("<!doctype html><html><body></body></html>", {
url: "http://localhost/"
});
const { window } = dom;
global.window = window;
global.document = window.document;
global.navigator = {
userAgent: "node.js"
};
copyProps(window, global);
}
function copyProps(src, target) {
const props = Object.getOwnPropertyNames(src)
.filter(prop => typeof target[prop] === "undefined")
.map(prop => Object.getOwnPropertyDescriptor(src, prop));
Object.defineProperties(target, props);
}
setUpDomEnvironment();
configure({ adapter: new Adapter() });
从被测组件导入
import React, { Component } from "react";
import {
Image,
Input,
Button,
ThemeProvider,
Overlay
} from "react-native-elements";
import { View, Text, Picker } from "react-native";
import { DotIndicator } from "react-native-indicators";
import { connect } from "react-redux";
import { login, assignUser } from "../redux/actions/authActions";
import F8StyleSheet from "../components/F8StyleSheet";
import { Dropdown } from "react-native-material-dropdown";
import { KeyboardAwareScrollView } from "react-native-keyboard-aware-scrollview";
import User from "../models/User";
import uuid from "react-native-uuid";
场景 2
所以这是一个问题，但随后发生了其他有趣的事情。当我将我的LoginView 换成一个超级简单的组件时，测试运行，但出现了一些新错误，这些错误使我对我的渲染设置产生了怀疑。
SimpleView.js
import React from "react";
import { Text, View } from "react-native";
export default (SimpleView = ({ params }) => (
<View>
<Text>SimpleView</Text>
</View>
));
测试
import React from "react";
import renderer from "react-test-renderer";
import { mount, ReactWrapper } from "enzyme";
import SimpleView from "./__mocks__/SimpleView";
describe("LoginView", () => {
const wrapper = mount(<SimpleView />);
it("can get through the damn test file", () => {
expect(true).toBe(true);
});
});
错误
PASS tests/LoginView.test.js (6.058s)
LoginView
✓ can get through the damn test file (4ms)
console.error node_modules/react-dom/cjs/react-dom.development.js:506
Warning: <Text /> is using incorrect casing. Use PascalCase for React components, or lowercase for HTML elements.
in Text (created by Component)
in Component (created by SimpleView)
in View (created by Component)
in Component (created by SimpleView)
in SimpleView (created by WrapperComponent)
in WrapperComponent
console.error node_modules/react-dom/cjs/react-dom.development.js:506
Warning: The tag <Text> is unrecognized in this browser. If you meant to render a React component, start its name with an uppercase letter.
in Text (created by Component)
in Component (created by SimpleView)
in View (created by Component)
in Component (created by SimpleView)
in SimpleView (created by WrapperComponent)
in WrapperComponent
console.error node_modules/react-dom/cjs/react-dom.development.js:506
Warning: <View /> is using incorrect casing. Use PascalCase for React components, or lowercase for HTML elements.
in View (created by Component)
in Component (created by SimpleView)
in SimpleView (created by WrapperComponent)
in WrapperComponent
console.error node_modules/react-dom/cjs/react-dom.development.js:506
Warning: The tag <View> is unrecognized in this browser. If you meant to render a React component, start its name with an uppercase letter.
in View (created by Component)
in Component (created by SimpleView)
in SimpleView (created by WrapperComponent)
in WrapperComponent
【问题讨论】：
标签： react-native jestjs enzyme