我将项目从Angular7升级到Angular8。 （目前，我还没有升级Nx，当前使用的版本是“ @ nrwl / nx”：“ 7.8.7”，）
升级后，我的应用程序成功运行（在构建或部署中没有任何问题）。
当我通过将"codeCoverage": true放在angular.json文件中运行测试用例时，它失败并抛出错误。
使用的脚本
"test:appone": "ng test --project=app-one --no-watch",
日志
0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli 'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli 'run',
1 verbose cli 'test:one' ]
2 info using npm@6.4.1
3 info using node@v10.15.3
4 verbose run-script [ 'pretest:one', 'test:one', 'posttest:one' ]
5 info lifecycle proj-micro-apps@1.1.0~pretest:one: proj-micro-apps@1.1.0
6 info lifecycle proj-micro-apps@1.1.0~test:one: proj-micro-apps@1.1.0
7 verbose lifecycle proj-micro-apps@1.1.0~test:one: unsafe-perm in lifecycle true
8 verbose lifecycle proj-micro-apps@1.1.0~test:one: PATH: C:\Users\KBharambe\AppData\Roaming\nvm\v10.15.3\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin;D:\NX8New\proj-micro-apps\node_modules\.bin;C:\ProgramData\DockerDesktop\version-bin;C:\Program Files\Docker\Docker\Resources\bin;C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Program Files\1E\NomadBranch\;C:\Program Files\Git\cmd;C:\Program Files\Git\mingw64\bin;C:\Program Files\Git\usr\bin;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\WINDOWS\System32\OpenSSH\;C:\Users\KBharambe\AppData\Roaming\nvm;C:\Program Files\nodejs;C:\Users\KBharambe\scoop\apps\maven\current\bin;C:\Users\KBharambe\scoop\shims;C:\Users\KBharambe\.windows-build-tools\python27\;C:\Users\KBharambe\AppData\Local\Continuum\anaconda3;C:\Users\KBharambe\AppData\Local\Continuum\anaconda3\Library\mingw-w64\bin;C:\Users\KBharambe\AppData\Local\Continuum\anaconda3\Library\usr\bin;C:\Users\KBharambe\AppData\Local\Continuum\anaconda3\Library\bin;C:\Users\KBharambe\AppData\Local\Continuum\anaconda3\Scripts;C:\Users\KBharambe\AppData\Local\Microsoft\WindowsApps;C:\Program Files\Microsoft VS Code\bin;C:\Users\KBharambe\AppData\Local\Programs\Microsoft VS Code\bin;C:\Users\KBharambe\AppData\Roaming\npm;C:\Users\KBharambe\AppData\Roaming\nvm;C:\Program Files\nodejs
9 verbose lifecycle proj-micro-apps@1.1.0~test:one: CWD: D:\NX8New\proj-micro-apps
10 silly lifecycle proj-micro-apps@1.1.0~test:one: Args: [ '/d /s /c',
10 silly lifecycle 'ng test --project=app-one --no-watch' ]
11 silly lifecycle proj-micro-apps@1.1.0~test:one: Returned: code: 1 signal: null
12 info lifecycle proj-micro-apps@1.1.0~test:one: Failed to exec test:one script
13 verbose stack Error: proj-micro-apps@1.1.0 test:one: `ng test --project=app-one --no-watch`
13 verbose stack Exit status 1
13 verbose stack at EventEmitter.<anonymous> (C:\Users\KBharambe\AppData\Roaming\nvm\v10.15.3\node_modules\npm\node_modules\npm-lifecycle\index.js:301:16)
13 verbose stack at EventEmitter.emit (events.js:189:13)
13 verbose stack at ChildProcess.<anonymous> (C:\Users\KBharambe\AppData\Roaming\nvm\v10.15.3\node_modules\npm\node_modules\npm-lifecycle\lib\spawn.js:55:14)
13 verbose stack at ChildProcess.emit (events.js:189:13)
13 verbose stack at maybeClose (internal/child_process.js:970:16)
13 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)
14 verbose pkgid proj-micro-apps@1.1.0
15 verbose cwd D:\NX8New\proj-micro-apps
16 verbose Windows_NT 10.0.17134
17 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "run" "test:one"
18 verbose node v10.15.3
19 verbose npm v6.4.1
20 error code ELIFECYCLE
21 error errno 1
22 error proj-micro-apps@1.1.0 test:one: `ng test --project=app-one --no-watch`
22 error Exit status 1
23 error Failed at the proj-micro-apps@1.1.0 test:one script.
23 error This is probably not a problem with npm. There is likely additional logging output above.
24 verbose exit [ 1, true ]
如果我删除了"codeCoverage"标志，则测试用例将执行而没有任何错误，但是我不会得到任何覆盖。
=============================== Coverage summary ===============================
Statements : Unknown% ( 0/0 )
Branches : Unknown% ( 0/0 )
Functions : Unknown% ( 0/0 )
Lines : Unknown% ( 0/0 )
================================================================================
我正在使用因果茉莉花
"karma": "4.4.1",
"@types/jasmine": "3.5.0",
"@types/jasminewd2": "2.0.8",
"karma-jasmine": "2.0.1",
"karma-jasmine-html-reporter": "1.4.2",
"jasmine-core": "3.5.0",
"jasmine-marbles": "0.6.0",
"jasmine-reporters": "2.3.2",
"jasmine-spec-reporter": "4.2.1",
"karma-chrome-launcher": "3.1.0",
"karma-cli": "2.0.0",
"karma-coverage": "2.0.1",
"karma-coverage-istanbul-reporter": "2.1.1",
"karma-jasmine": "2.0.1",
"karma-jasmine-html-reporter": "1.4.2",
"karma-junit-reporter": "2.0.1",
ng --version
Angular CLI: 8.3.20
Node: 10.15.3
OS: win32 x64
Angular: 8.2.14
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Package Version
------------------------------------------------------------
@angular-devkit/architect 0.803.20
@angular-devkit/build-angular 0.803.21
@angular-devkit/build-ng-packagr 0.803.20
@angular-devkit/build-optimizer 0.803.21
@angular-devkit/build-webpack 0.803.21
@angular-devkit/core 8.3.20
@angular-devkit/schematics 8.3.20
@angular/cdk 8.2.3
@angular/cli 8.3.20
@angular/flex-layout 8.0.0-beta.27
@angular/material 8.2.3
@angular/material-moment-adapter 8.2.3
@ngtools/json-schema 1.1.0
@ngtools/webpack 8.3.21
@schematics/angular 8.3.20
@schematics/update 0.803.20
ng-packagr 5.0.0
rxjs 6.5.3
typescript 3.4.5
webpack 4.39.2
我尝试了多个节点版本，但仍然相同。
能否让我知道可能是什么问题？
谢谢。