feat(@angular/cli): allow code coverage excludes

[filipesilva]

A new CLI config entry under test allows you to list exclude globs for code coverage:

  "test": {
    "codeCoverage": {
      "exclude": [
        "src/polyfills.ts",
        "**/test.ts"
      ]
    },
    "karma": {
      "config": "./karma.conf.js"
    }
  },

/cc @delasteve

[hansl]

fromProject() can return null, and test and codeCoverage might be missing from the config. Use get() to allow for defaults.

[pete-otaqui]

Am I correct in thinking that this is no longer possible with the latest version 6.0.0 of angular-cli?

I've tried adding a codeCoverage block to angular.json, and get an error about that being invalid according to the schema.

Is something like this available with 6.0.0, and if so how should it be used?

[filipesilva]

@pete-otaqui this should work on 6.0:

"test": {
  "builder": "@angular-devkit/build-angular:karma",
  "options": {
    "main": "src/test.ts",
    // ...
    "codeCoverageExclude": [
      "src/polyfills.ts",
      "**/test.ts"
    ]
  }
},

[pete-otaqui]

Thanks for that - I actually managed to work that out by searching the repo for "codeCoverageExclude", working out where from the angular.json schema that key was allowed and went form there.

Thanks again for the example

[takato1314]

It would be nice too if the documentation can be updated to align with the changes that @filipesilva mentioned.

Currently it only mentioned that it expects the name of the test entry-point file.

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