Angular-cli: ng test 404 for .js.map since angular 7.0

[maximedupre]

Bug Report or Feature Request (mark with an x)

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

Command (mark with an x)

- [ ] new
- [ ] build
- [ ] serve
- [ x ] test
- [ ] e2e
- [ ] generate
- [ ] add
- [ ] update
- [ ] lint
- [ ] xi18n
- [ ] run
- [ ] config
- [ ] help
- [ ] version
- [ ] doc

Versions

npm v6.4.1
Angular CLI: 7.0.2
Node: 9.5.0
OS: darwin x64
Angular: 7.0.0
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

@angular-devkit/architect 0.10.2
@angular-devkit/build-angular 0.10.2
@angular-devkit/build-optimizer 0.10.2
@angular-devkit/build-webpack 0.10.2
@angular-devkit/core 7.0.2
@angular-devkit/schematics 7.0.2
@angular/cli 7.0.2
@ngtools/webpack 7.0.2
@schematics/angular 7.0.2
@schematics/update 0.10.2
rxjs 6.3.3
typescript 3.1.3
webpack 4.19.1

The log given by the failure

22 10 2018 17:10:07.402:WARN [web-server]: 404: /node_modules/@angular/core/fesm5/testing.js.map
22 10 2018 17:10:07.404:WARN [web-server]: 404: /node_modules/@angular/core/fesm5/core.js.map
22 10 2018 17:10:07.406:WARN [web-server]: 404: /node_modules/rxjs/_esm5/index.js.map
22 10 2018 17:10:07.407:WARN [web-server]: 404: /node_modules/rxjs/_esm5/internal/Observable.js.map
22 10 2018 17:10:07.409:WARN [web-server]: 404: /node_modules/rxjs/_esm5/internal/util/canReportError.js.map
22 10 2018 17:10:07.411:WARN [web-server]: 404: /node_modules/rxjs/_esm5/internal/Subscriber.js.map
22 10 2018 17:10:07.423:WARN [web-server]: 404: /node_modules/rxjs/_esm5/internal/util/isFunction.js.map
22 10 2018 17:10:07.426:WARN [web-server]: 404: /node_modules/rxjs/_esm5/internal/Observer.js.map
[...]

Mention any other details that might be useful

Occurs since updating to angular 7.0

[alan-agius4]

Hi, I tried to look into this but I cannot reproduce

Can you setup a minimal repro please?

You can read here why this is needed. A good way to make a minimal repro is to create a new app via ng new repro-app and adding the minimum possible code to show the problem. Then you can push this repository to github and link it here.

This might be related to your directory structure so its really important to get an accurate repro to diagnose this.

[maximedupre]

@alan-agius4 Thanks for the response. In my attempt to create a minimal repro I deleted 'node_modules' and reinstalled everything and now everything works.

[britvik]

I'm having the same issue after upgrading to angular 7. It doesn't show the warnings at first, but after few reruns (by rerun I mean automatic test execution after any change made to test or sourcecode files).
I'm using same versions as OP + "jasmine-core": "2.6.4", "karma": "1.7.1",

[werthdavid]

That only happens if you open developer tools in the Test-Chrome (at least for me)

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