当在Android上运行测试失败时，继续获取错误

说明

免责声明：这也是作为回购协议的一个问题发布在github上，因此您可以更好地查看那里的图像

在Android模拟器上运行测试时，如果其中一个测试失败，测试报告末尾会显示如下错误消息：

detox[8530] ERROR: [cli.js] Error: Command failed: node_modules/.bin/jest --config e2e/config.json '--testNamePattern=^((?!:ios:).)*$' --maxWorkers 1 "e2e"

如果所有测试都通过，则不会显示此消息，如屏幕截图的以下链接所示：

在下面，您可以检查测试失败时终端中显示的内容的最后一部分：

Check device logs for full details!

      13 | 
      14 |   it("should have welcome screen", async () => {
    > 15 |     await expect(element(by.id("WelcomeScreen"))).toBeVisible()
         |                                                   ^
      16 |   })
      17 | 
      18 |   // it("should go to next screen after tap", async () => {

      at Client.execute (../node_modules/detox/src/client/Client.js:92:28)
      at InvocationManager.execute (../node_modules/detox/src/invoke.js:11:39)
      at MatcherAssertionInteraction.execute (../node_modules/detox/src/android/expect.js:128:35)
      at ExpectElement.toBeVisible (../node_modules/detox/src/android/expect.js:275:112)
      at _callee3$ (firstTest.spec.js:15:51)
      at tryCatch (../node_modules/regenerator-runtime/runtime.js:45:40)
      at Generator.invoke [as _invoke] (../node_modules/regenerator-runtime/runtime.js:271:22)
      at Generator.prototype.<computed> [as next] (../node_modules/regenerator-runtime/runtime.js:97:21)
      at tryCatch (../node_modules/regenerator-runtime/runtime.js:45:40)
      at invoke (../node_modules/regenerator-runtime/runtime.js:135:20)
      at ../node_modules/regenerator-runtime/runtime.js:170:11
      at callInvokeWithMethodAndArg (../node_modules/regenerator-runtime/runtime.js:169:16)
      at AsyncIterator.enqueue (../node_modules/regenerator-runtime/runtime.js:192:13)
      at AsyncIterator.prototype.<computed> [as next] (../node_modules/regenerator-runtime/runtime.js:97:21)
      at Object.exports.async (../node_modules/regenerator-runtime/runtime.js:216:14)

detox[9947] INFO:  at e2e/login-screen-tests/login-screen.spec.js:99:9 
detox[9947] INFO:  at e2e/login-screen-tests/login-screen.spec.js:100:9 
detox[9947] INFO:  [DetoxServer.js] server listening on localhost:36337...
 PASS  e2e/login-screen-tests/login-screen.spec.js (18.825s)

Test Suites: 1 failed, 1 passed, 2 total
Tests:       1 failed, 2 passed, 3 total
Snapshots:   0 total
Time:        36.553s
Ran all test suites matching /e2e/i with tests matching "^((?!:ios:).)*$".
detox[9939] ERROR: [cli.js] Error: Command failed: node_modules/.bin/jest --config e2e/config.json '--testNamePattern=^((?!:ios:).)*$' --maxWorkers 1 "e2e"

• e2e文件夹如下：

• 1）

  init.js

持续解毒=需要（“解毒”） const config=require（“../package.json”）.detox const adapter=require（“排毒/跑步者/玩笑/适配器”） jest.setTimeout（120000） jasmine.getEnv（）.addReporter（适配器） 之前（异步（）=>{ wait detox.init（配置） }) beforeach（异步（）=>{ 等待适配器。beforeach（）之前 }) 毕竟（异步（）=>{ 等待适配器。毕竟（） 等待排毒 })

• 2）

  config.json

• 3）

  firstTest.spec.js

  测试失败的测试套件

{
描述（“示例”，（）=>{
beforeach（异步（）=>{
等待设备。重新加载reactnative（）
})
它（'应该可以看到帐号'，async（）=>{
const usernameInput=await元素（by.id（“loginScreen accountNumber”））
wait expect（usernameInput）.tobevicible（）
})
//失败的测试如下所示
它（“应该有欢迎屏幕”，异步（）=>{
wait expect（元素（by.id（“WelcomeScreen”））.tobevicible（）
})
})
}

预期行为

我相信，预期的行为是测试报告结束时不显示错误

设备日志

环境：

• 排毒：16.0.1

• 反应本机：0.61.5

• 节点：12.16.1

• 设备：AVD Android Studio Nexus 4 API 28

• 操作系统：Ubuntu 18.04.4 LTS

• 测试运行程序（选择一个）：Jest（如上面的

  package.json

  所示）

---

这个错误是完全合法的，指出

解毒

的工作原理与预期相符

当涉及到测试编排和执行时，

Detox

实际上只是实际测试运行者的包装--

Jest

在您的情况下（更好的选择是IMO:）。这一事实在本节中提到，并在更具体的章节中详细解释：

---

反过来，这也会影响

Detox

CLI的功能，即使用适当的参数执行测试运行程序。因此，总而言之，当所有测试都通过时，玩笑就成功地、无声地结束了。当某件事情失败时，Jest会记录一个错误，给出导致错误的线索，告诉每个人它失败了，并返回一个非0值。这与您所描述的内容完全一致。

感谢您的澄清！我原以为当所有测试都通过时它会完成，不会在最后抛出错误，但现在我明白了排毒的工作原理。再次感谢！

{
  "name": "rmb-rn",
  "version": "0.5.0",
  "private": true,
  "scripts": {
    "android": "react-native run-android",
    "ios": "react-native run-ios",
    "start": "react-native start",
    "test": "jest",
    "lint": "eslint index.js app --fix --ext .js,.ts,.tsx",
    "test:e2e": "detox test -c ios.sim.debug",
    "build:e2e": "detox build -c ios.sim.debug",
    "ci:test:e2e": "detox test -c ios.sim.release -l verbose --cleanup",
    "ci:build:e2e": "detox build -c ios.sim.release",
    "compile": "tsc --noEmit -p . --pretty",
    "format": "npm-run-all format:*",
    "format:js": "prettier --write {.,**}/*.js",
    "format:json": "prettier --write {.,**}/*.json",
    "format:md": "prettier --write {.,**}/*.md",
    "format:ts": "prettier --write {.,**}/*.{ts,tsx}",
    "hack:types-react-navigation": "rimraf node_modules/@types/react-navigation/node_modules/@types",
    "hack:types-react-native": "rimraf node_modules/@types/react-native/node_modules/@types",
    "hack:types-react-test-renderer": "rimraf node_modules/@types/react-test-renderer/node_modules/@types",
    "patch": "patch-package",
    "postinstall": "node ./bin/postInstall",
    "prepare": "npm-run-all patch hack:*",
    "storybook": "(adb reverse tcp:7007 tcp:7007 || true) && start-storybook -p 7007",
    "build-storybook": "build-storybook -c .storybook -o .out",
    "adb": "adb reverse tcp:9090 tcp:9090 && adb reverse tcp:3000 tcp:3000 && adb reverse tcp:9001 tcp:9001 && adb reverse tcp:8081 tcp:8081"
  },
  "dependencies": {
    "@react-native-community/async-storage": "^1.5.1",
    "@react-native-community/datetimepicker": "^2.2.2",
    "@react-native-community/masked-view": "^0.1.7",
    "@storybook/addon-actions": "^6.0.0-alpha.2",
    "@storybook/addon-links": "^6.0.0-alpha.2",
    "@storybook/addons": "^6.0.0-alpha.2",
    "@storybook/react": "^6.0.0-alpha.2",
    "@types/node": "^13.5.3",
    "animated": "^0.2.2",
    "apisauce": "1.1.1",
    "babel-loader": "^8.0.6",
    "i18n-js": "^3.0.11",
    "lodash.throttle": "4.1.1",
    "mobx": "5.15.0",
    "mobx-react-lite": "^1.4.1",
    "mobx-state-tree": "^3.14.1",
    "moment": "^2.24.0",
    "native-base": "^2.13.8",
    "ramda": "0.26.1",
    "react": "16.12.0",
    "react-dom": "^16.12.0",
    "react-native": "0.61.5",
    "react-native-action-sheet": "^2.2.0",
    "react-native-camera": "^3.19.1",
    "react-native-contacts": "^5.0.7",
    "react-native-device-info": "^5.5.3",
    "react-native-gesture-handler": "^1.5.0",
    "react-native-keyboard-listener": "^1.1.0",
    "react-native-keychain": "4.0.1",
    "react-native-localize": "^1.0.0",
    "react-native-reanimated": "^1.4.0",
    "react-native-safe-area-context": "^0.7.3",
    "react-native-screens": "^2.0.0-alpha.6",
    "react-native-snap-carousel": "^3.8.4",
    "react-native-splash-screen": "3.2.0",
    "react-native-uuid": "^1.4.9",
    "react-native-vector-icons": "^6.6.0",
    "react-navigation": "4.2.2",
    "react-navigation-drawer": "^2.3.3",
    "react-navigation-stack": "2.2.3",
    "react-navigation-tabs": "^2.6.0",
    "reactotron-mst": "^3.1.1",
    "reactotron-react-native": "^4.0.0-beta.1",
    "validate.js": "0.13.1"
  },
  "devDependencies": {
    "@babel/core": "^7.7.4",
    "@babel/plugin-proposal-decorators": "^7.0.0",
    "@babel/plugin-proposal-optional-catch-binding": "^7.0.0",
    "@babel/runtime": "^7.7.4",
    "@emotion/core": "^10.0.15",
    "@storybook/addon-storyshots": "6.0.0-alpha.2",
    "@storybook/react-native": "^5.3.9",
    "@storybook/react-native-server": "^5.3.9",
    "@types/jest": "25.1.4",
    "@types/ramda": "0.26.36",
    "@types/react": "16.9.13",
    "@types/react-native": "0.60.23",
    "@types/react-navigation": "3.4.0",
    "@types/react-test-renderer": "16.9.1",
    "@typescript-eslint/eslint-plugin": "2.9.0",
    "@typescript-eslint/parser": "2.9.0",
    "babel-jest": "^25.2.3",
    "detox": "^16.0.1",
    "emotion-theming": "^10.0.14",
    "eslint": "^6.6.0",
    "eslint-config-prettier": "^6.0.0",
    "eslint-config-standard": "14.1.0",
    "eslint-plugin-import": "^2.15.0",
    "eslint-plugin-node": "10.0.0",
    "eslint-plugin-promise": "^4.0.1",
    "eslint-plugin-react": "^7.12.4",
    "eslint-plugin-react-native": "^3.6.0",
    "eslint-plugin-standard": "^4.0.0",
    "ignite-bowser": "^4.11.3",
    "jest": "^25.2.3",
    "jetifier": "^1.6.1",
    "metro-react-native-babel-preset": "^0.57.0",
    "npm-run-all": "4.1.5",
    "patch-package": "6.2.0",
    "postinstall-prepare": "1.0.1",
    "prettier": "1.19.1",
    "react-devtools-core": "4.2.1",
    "react-native-dotenv": "^0.2.0",
    "react-powerplug": "1.0.0",
    "react-test-renderer": "16.12.0",
    "rimraf": "3.0.0",
    "solidarity": "2.3.1",
    "typescript": "3.7.2"
  },
  "jest": {
    "preset": "react-native",
    "setupFiles": [
      "<rootDir>/node_modules/react-native/jest/setup.js",
      "<rootDir>/test/setup.ts"
    ],
    "testPathIgnorePatterns": [
      "/node_modules/",
      "/e2e"
    ],
    "transformIgnorePatterns": [
      "node_modules/(?!(jest-)?react-native|react-native|react-navigation|@react-navigation|@storybook|@react-native-community)"
    ]
  },
  "detox": {
    "test-runner": "jest",
    "configurations": {
      "ios.sim.debug": {
        "binaryPath": "ios/build/Build/Products/Debug-iphonesimulator/rmbRn.app",
        "build": "xcodebuild -workspace ios/rmbRn.xcworkspace -scheme rmbRn -configuration Debug -sdk iphonesimulator -derivedDataPath ios/build -UseModernBuildSystem=NO",
        "type": "ios.simulator",
        "name": "iPhone 8"
      },
      "ios.sim.release": {
        "binaryPath": "ios/build/Build/Products/Release-iphonesimulator/rmbRn.app",
        "build": "xcodebuild -workspace ios/rmbRn.xcworkspace -scheme rmbRn -configuration Release -sdk iphonesimulator -derivedDataPath ios/build -UseModernBuildSystem=NO",
        "type": "ios.simulator",
        "name": "iPhone 8"
      },
      "android.emu.debug": {
        "binaryPath": "android/app/build/outputs/apk/debug/app-debug.apk",
        "build": "cd android && ./gradlew assembleDebug assembleAndroidTest -DtestBuildType=debug && cd ..",
        "type": "android.emulator",
        "device": {
          "avdName": "Nexus_4_API_28"
        }
      },
      "android.emu.debug-real-device": {
        "binaryPath": "android/app/build/outputs/apk/debug/app-debug.apk",
        "build": "cd android && ./gradlew assembleDebug assembleAndroidTest -DtestBuildType=debug && cd ..",
        "type": "android.attached",
        "name": "ce50806d386d"
      },
      "android.emu.release": {
        "binaryPath": "android/app/build/outputs/apk/release/app-release.apk",
        "build": "cd android && ./gradlew assembleRelease assembleAndroidTest -DtestBuildType=release && cd ..",
        "type": "android.emulator",
        "device": {
          "avdName": "Nexus_4_API_28"
        }
      }
    }
  }
}

{
  "setupFilesAfterEnv": ["./init.js"],
  "testEnvironment": "node"
}

As already mentioned in the Getting Started guide, Detox itself does not effectively run tests logic, but rather delegates that responsibility onto a test runner. 
Jest is the recommended runner for projects with test suites that have become large enough so as to require parallel execution.