angular cli exclude files/directory for `ng test --code-coverage`

Question

I am running the following command to unit test and generate code code coverage report.

ng test --code-coverage

It is working fine and writing code coverage report in coverage folder.

In this I got all files and directory coverage report

But I want to exclude specific files/directory let say src/app/quote/services/generated. How to do that?

Solution 1

Updated September 2019

With Angular CLI 6, angular-cli.json has been renamed to angular.json which contains the configuration. In angular.json, codeCoverage expects a boolean value, which sets whether code-coverage should be done with every test run or not. To exclude files from code coverage, there is a property codeCoverageExclude which accepts an array of files to be excluded from code coverage.

angular.json

"test": {
  "codeCoverageExclude": ["src/assets/vendor/**"],,
  ...
}

Updated answer

rc.0 has been released. You should be able to add the code snippet below to ignore files.

Original answer

Currently, you aren't able to do so in beta.32.3. A change is coming to allow this to happen. In the next release (probably rc.0), you will be able to do the following:

.angular-cli.json

"test": {
  "codeCoverage": {
    "exclude": [
      "src/app/quote/services/generated/**/*"
    ]
  },
  ...
}

Solution 2

With the latest CLI, inside angular.json

  "test": {
          "builder": "@angular-devkit/build-angular:karma",
          "options": {
            "main": "src/test.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.spec.json",
            "karmaConfig": "./karma.conf.js",
            "codeCoverageExclude": ["src/testing/**/*"],

Comments

[Partha Sarathi Ghosh]

Thanks a lot for the information. How do you came to know that? Is there any release plan. Please post the link here.

[delasteve]

I proposed the solution that Filipe Silva ultimately implemented. The changeset is already in master. It will be in the next CLI release, whether it's called beta.33 or RC.0. The next CLI release will happen after Angular itself reaches RC.0.

[delasteve]

@ParthaSarathiGhosh RC.0 has been released. If you upgrade your project, you should be able to use my answer.

[Partha Sarathi Ghosh]

Here is a similar type of question for ng lint. Please have a look if you can help me. stackoverflow.com/questions/42507838/…

[FiniteLooper]

For newer versions of Angular (6 and up I think) see the other answer in this question. it is now codeCoverageExclude instead!

[rosiejaneenomar]

@delasteve do you know how to exclude all files ending with .action.ts, because your answer is specific by folder? correct me if im wrong. thanks in advace

[atwright147]

codeCoverageExclude should actually be inside test.options as stated by @Greg in another answer

[coppereyecat]

In case anyone else is having trouble with this in a library inside a monorepo, it is worth noting that the directory is specified from the root, ie "projects/lib-something/lib/foldertoexclude/*".

[Álister Lopes Ferreira]

I'm using Angular 14 and codeCoverageExclude stopped working