[Feature Request] Support for `ng test` in Angular CLI v6 via angular.json `test` `builder`

In the new Angular CLI angular.json file you get this config which backs the ng test command:

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  ...
  "projects": {
    "my-app-name-here": {
      ...
      "architect": {
        ...
        "test": {
          "builder": "@angular-devkit/build-angular:karma",
          "options": {
            "main": "src/test.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.spec.json",
            "karmaConfig": "src/karma.conf.js",
            "styles": [
              "src/styles.css"
            ],
            "scripts": [],
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ]
          }
        },
        ...
      }
    },
    ...
    }
  },
  ...
}

Is it possible create a package similar to @angular-devkit/build-angular:karma (not sure about everything it does), and make it available for as a replacement for above?

Thanks for awesome project.

[Itrulia]

@ahnpnl this is different. the linked issue is about doing the boilerplate stuff, not overriding the angular cli test command 😃

[Itrulia]

Hey! I have done something like this here: https://github.com/Itrulia/jest-schematic (as I wrote on 3rd of July I would, I am sorry, it took me a while).

I hope this helps you out!