ng test does not use styles

[Dumpen]

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

Windows 10

node --version
v8.12.0

npm --version
6.4.1

     _                      _                 ____ _     ___
    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                |___/


Angular CLI: 6.2.3
Node: 8.12.0
OS: win32 x64
Angular: 6.1.8
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.8.3
@angular-devkit/build-angular     0.8.3
@angular-devkit/build-optimizer   0.8.3
@angular-devkit/build-webpack     0.8.3
@angular-devkit/core              0.8.3
@angular-devkit/schematics        0.8.3
@angular/cli                      6.2.3
@ngtools/webpack                  6.2.3
@schematics/angular               0.8.3
@schematics/update                0.8.3
rxjs                              6.2.2
typescript                        2.9.2
webpack                           4.20.2

Repro steps

ng new karma-test --style scss

Add some styling to styles.scss:

body {
    background-color: red;
}

Run ng test

The log given by the failure

Desired functionality

I would expect the styles.scss to be loaded in the karma test window. It is not.

Mention any other details that might be useful

[alan-agius4]

Duplicate of #11072

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