Cannot run tests of empty project with plain karma -> integration with JetBrains's IntelliJ is broken

[alexeagle]

From @rcomblen on May 4, 2018 12:18

Bug Report or Feature Request (mark with an x)

- [ x] bug report -> please search issues before submitting
- [ ] feature request

Area

- [ x] devkit
- [ ] schematics

Versions

~$ node --version
v8.11.1
~$ npm --version
5.6.0
~$

Repro steps

• Create an empty project using ng new myproject
• Open the project in Intellij (2018.1.2 Ultimate)
• Launch the unit tests using Karma plugin (181.4668.7)

The log given by the failure

/usr/bin/node /home/user/.IntelliJIdea2018.1/config/plugins/js-karma/js_reporter/karma-intellij/lib/intellijServer.js --karmaPackageDir=/home/user/sandbox/angular/myproject/node_modules/karma --configFile=/home/user/sandbox/angular/myproject/src/karma.conf.js

/home/user/sandbox/angular/myproject/node_modules/@angular-devkit/build-angular/src/angular-cli-files/plugins/packages/angular_devkit/build_angular/src/angular-cli-files/plugins/karma.ts:53
throw new Error(The '@angular-devkit/build-angular/plugins/karma' karma plugin is meant to +
^
Error: The '@angular-devkit/build-angular/plugins/karma' karma plugin is meant to be used from within Angular CLI and will not work correctly outside of it.
at init (/home/user/sandbox/angular/myproject/node_modules/@angular-devkit/build-angular/src/angular-cli-files/plugins/packages/angular_devkit/build_angular/src/angular-cli-files/plugins/karma.ts:53:11)

Desired functionality

karma start --config=karma.conf.js should just work.

Mention any other details that might be useful

Copied from original issue: angular/devkit#846

[alexeagle]

From @UnitedPE on May 24, 2018 11:44

see #10703

@AlexGS74 presents a working solution

It works if you create a new run configuration. It will detect Cli and use it as Karma engine. If you run an old configuration still pointing to a global/local karma instance, it fails.

[filipesilva]

This is intended behavior has indicated by the error message:

Error: The '@angular-devkit/build-angular/plugins/karma' karma plugin is meant to be used from within Angular CLI and will not work correctly outside of it.

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