自从升级到 Jest 26 和 Angular 10 以来,单元测试错误行号被错误地报告。我从 Angular 4 开始就一直在使用 Jest,并且在每个新版本中都进行了升级。
我已经通读了关于此的所有现有文章,并尝试了我能找到的所有建议。它们似乎都不适用于我的情况。
我已经能够创建一个最小的存储库,您可以在其中看到这种情况( https://github.com/russcarver/angular-jest-test/tree/jest-line-errors )。确保您在 jest-line-errors
上分支。我在 app.component.spec.ts 文件( https://github.com/russcarver/angular-jest-test/blob/jest-line-errors/src/app/app.component.spec.ts )中添加了注释以显示问题。
奇怪的是,第一个是我必须在每个规范文件的顶部添加一个“虚拟”测试。否则,每个文件中的第一个测试总是失败:
it('Should init the Test Suite', noop); // ****** The first test fails unless I add this ******
当其他方法都不起作用时,我绝望地创建了这个解决方案。我有一种预感它是相关的。这个特殊的 Angular 升级还建议将 tsconfig.json 文件拆分为 tsconfig.base.json、tsconfig.app.json 和 tsconfig.spec.json。
当我更改 tsconfig.spec.json 中的各种选项时,错误行号会发生变化(特别是
lib
、 module
和 target
选项)。我已将此文件配对到我的(大型)项目所需的最低限度,并在 repo 中对其进行了修改以不扩展 tsconfig.base.json。我还研究并设置了我认为最适合我的项目的选项(针对最新的 2 个版本的 Chrome、Edge Safari 和 FireFox,并使用所有最新的 JavaScript 和 TypeScript 功能)。我知道这不是 Angular 问题,因为我已经能够用 Angular 9、10 和 11 重现这个问题。在所有 tsconfig 更改之前,它曾经在 Angular 9 和 Jest 25 中工作。
我也知道(已经测试过)它与规范文件中的空行或注释无关。
我也尝试了 Babel 配置无济于事。
我以前用过
jest-preset-angular
(现在已弃用)但添加/删除没有任何区别。无论是否启用/运行覆盖率,都会错误地报告行号。
自去年七月(2020 年)以来,我们一直在受苦。任何帮助将不胜感激!
最佳答案
这似乎在我之后解决了:
我不确定哪些部分负责修复,但这是我的 package.json 文件。我很乐意应要求提供其他文件。
{
"scripts": {
"build": "npm run lint && npm run test-build && ng build --configuration=development",
"build:dynamic": "npm run lint && npm run test-build && ng build --configuration=dynamic && npm run obfuscate",
"lint": "ng lint",
"ng": "ng",
"obfuscate": "ng run resolver:obfuscate --configuration=production",
"postinstall": "ngcc --tsconfig './tsconfig.app.json'",
"refresh-project": "rimraf coverage/* && rimraf dist/* && rimraf node_modules/* && npm install",
"start": "ng serve --host=0.0.0.0 --port 4200 --configuration=development",
"start-dynamic": "ng serve --host=0.0.0.0 --port 4200 --configuration=dynamic",
"test": "ng test -- --coverage --coverage-reporters=text-summary --coverage-reporters=lcov",
"test-build": "ng test -- --coverage --coverage-reporters=text-summary --coverage-reporters=cobertura",
"test-watch": "ng test -- --watch"
},
"private": true,
"dependencies": {
"@agm/core": "1.1.0",
"@angular/animations": "12.0.5",
"@angular/cdk": "12.0.5",
"@angular/common": "12.0.5",
"@angular/compiler": "12.0.5",
"@angular/core": "12.0.5",
"@angular/forms": "12.0.5",
"@angular/material": "12.0.5",
"@angular/platform-browser": "12.0.5",
"@angular/platform-browser-dynamic": "12.0.5",
"@angular/router": "12.0.5",
"@auth0/angular-jwt": "5.0.2",
"@google/markerclusterer": "2.0.9",
"@material-extended/mde": "3.0.3",
"@microsoft/applicationinsights-web": "2.6.3",
"@microsoft/signalr": "5.0.7",
"@okta/okta-angular": "3.1.0",
"@srag/ngx-source-obfuscation": "2.0.0",
"@types/file-saver": "2.0.2",
"@types/googlemaps": "3.43.3",
"@types/jest": "26.0.23",
"@types/node": "14.17.3",
"@types/sjcl": "1.0.29",
"angular-user-idle": "2.2.6",
"angulartics2": "10.0.0",
"broadcast-channel": "3.7.0",
"browser-globals": "0.0.2",
"core-js": "3.10.0",
"cross-env": "7.0.3",
"date-fns": "2.22.1",
"date-fns-tz": "1.1.4",
"file-saver": "2.0.5",
"gsap": "3.7.0",
"hammerjs": "2.0.8",
"kaop-ts": "4.3.0",
"launchdarkly-js-client-sdk": "2.19.2",
"ng2-file-upload": "1.4.0",
"ngx-currency": "2.5.2",
"ngx-mask": "12.0.0",
"npm": "7.17.0",
"rxjs": "6.6.7",
"sass": "1.35.1",
"save": "2.4.0",
"sjcl": "1.0.8",
"time-input-polyfill": "1.0.10",
"web-animations-js": "2.3.2",
"zone.js": "0.11.4"
},
"devDependencies": {
"@angular-builders/jest": "12.0.0",
"@angular-devkit/build-angular": "12.0.5",
"@angular/cli": "12.0.5",
"@angular/compiler-cli": "12.0.5",
"@angular/language-service": "12.0.5",
"@types/jasmine": "3.7.7",
"@types/jasminewd2": "2.0.9",
"codelyzer": "6.0.2",
"crypto-browserify": "3.12.0",
"jasmine-core": "3.7.1",
"jasmine-spec-reporter": "7.0.0",
"jest": "26.6.3",
"jest-date-mock": "1.0.8",
"jest-trx-results-processor": "2.2.0",
"jest-zone-patch": "0.0.10",
"rimraf": "3.0.2",
"stream-browserify": "3.0.0",
"ts-jest": "26.5.6",
"ts-node": "10.0.0",
"tslint": "6.1.3",
"tslint-eslint-rules": "5.4.0",
"typescript": "4.2.4",
"webpack-bundle-analyzer": "4.4.2"
},
"engineStrict": true,
"engines": {
"node": "14.17.0",
"npm": "7.17.0"
}
}
关于angular - Jest 26 & Angular - 错误地报告了错误行号,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/66550875/