fix(@angular/cli): fix ng test report sourcemaps

[filipesilva]

#6160 broke ng test sourcemaps in Chrome, this PR fixes it.

Before:

kamik@T460p MINGW64 D:/sandbox/master-project (master)
$ ng test --sr
 10% building modules 1/1 modules 0 active13 07 2017 16:38:43.942:INFO [karma]: Karma v1.7.0 server started at http://0.0.0.0:9876/
13 07 2017 16:38:43.945:INFO [launcher]: Launching browser Chrome with unlimited concurrency
13 07 2017 16:38:43.953:INFO [launcher]: Starting browser Chrome                                                    13 07 2017 16:38:54.099:INFO [Chrome 59.0.
3071 (Windows 10 0.0.0)]: Connected on socket Xdep72ofT_Q7MWBHAAAA with id 76010950
Chrome 59.0.3071 (Windows 10 0.0.0) AppComponent should have as title 'app' FAILED
        Expected 'app' to equal 'forced bug'.
            at Object.<anonymous> (http://localhost:9876/_karma_webpack_/main.bundle.js:89:27)
            at ZoneDelegate.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (http://localhost:9
876/_karma_webpack_/polyfills.bundle.js:2704:26)
            at AsyncTestZoneSpec.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/async-test.js.AsyncTestZoneSpec.onInvoke (
http://localhost:9876/_karma_webpack_/vendor.bundle.js:55972:39)
            at ProxyZoneSpec.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/proxy.js.ProxyZoneSpec.onInvoke (http://localh
ost:9876/_karma_webpack_/vendor.bundle.js:56735:39)
Chrome 59.0.3071 (Windows 10 0.0.0): Executed 2 of 3 (1 FAILED) (0 secs / 0.162 secs)
Chrome 59.0.3071 (Windows 10 0.0.0) AppComponent should have as title 'app' FAILED
        Expected 'app' to equal 'forced bug'.
            at Object.<anonymous> (http://localhost:9876/_karma_webpack_/main.bundle.js:89:27)
            at ZoneDelegate.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke (http://localhost:9
876/_karma_webpack_/polyfills.bundle.js:2704:26)
            at AsyncTestZoneSpec.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/async-test.js.AsyncTestZoneSpec.onInvoke (
http://localhost:9876/_karma_webpack_/vendor.bundle.js:55972:39)
            at ProxyZoneSpec.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/proxy.js.ProxyZoneSpec.onInvoke (http://localh
Chrome 59.0.3071 (Windows 10 0.0.0): Executed 3 of 3 (1 FAILED) (0.225 secs / 0.204 secs)

After:

kamik@T460p MINGW64 D:/sandbox/master-project (master)
$ ng test --sr
 10% building modules 1/1 modules 0 active13 07 2017 16:37:59.478:INFO [karma]: Karma v1.7.0 server started at http://0.0.0.0:9876/
13 07 2017 16:37:59.481:INFO [launcher]: Launching browser Chrome with unlimited concurrency
13 07 2017 16:37:59.487:INFO [launcher]: Starting browser Chrome                                                    13 07 2017 16:38:08.559:INFO [Chrome 59.0.
3071 (Windows 10 0.0.0)]: Connected on socket ixHN4NzVFTEW1iYiAAAA with id 92819713
Chrome 59.0.3071 (Windows 10 0.0.0) AppComponent should have as title 'app' FAILED
        Expected 'app' to equal 'forced bug'.
            at Object.<anonymous> D:/sandbox/master-project/src/app/app.component.spec.ts:23:23)
            at ZoneDelegate.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke D:/sandbox/master-p
roject/node_modules/zone.js/dist/zone.js:391:1)
            at AsyncTestZoneSpec.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/async-test.js.AsyncTestZoneSpec.onInvoke D
:/sandbox/master-project/node_modules/zone.js/dist/async-test.js:49:1)
            at ProxyZoneSpec.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/proxy.js.ProxyZoneSpec.onInvoke D:/sandbox/mas
ter-project/node_modules/zone.js/dist/proxy.js:76:1)
Chrome 59.0.3071 (Windows 10 0.0.0): Executed 2 of 3 (1 FAILED) (0 secs / 0.367 secs)
Chrome 59.0.3071 (Windows 10 0.0.0) AppComponent should have as title 'app' FAILED
        Expected 'app' to equal 'forced bug'.
            at Object.<anonymous> D:/sandbox/master-project/src/app/app.component.spec.ts:23:23)
            at ZoneDelegate.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/zone.js.ZoneDelegate.invoke D:/sandbox/master-p
roject/node_modules/zone.js/dist/zone.js:391:1)
            at AsyncTestZoneSpec.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/async-test.js.AsyncTestZoneSpec.onInvoke D
:/sandbox/master-project/node_modules/zone.js/dist/async-test.js:49:1)
            at ProxyZoneSpec.webpackJsonp.../../../../../../../sandbox/master-project/node_modules/zone.js/dist/proxy.js.ProxyZoneSpec.onInvoke D:/sandbox/mas
Chrome 59.0.3071 (Windows 10 0.0.0): Executed 3 of 3 (1 FAILED) (0.421 secs / 0.4 secs)

Fix #6583

[Brocco]

Is this comment block necessary?

[filipesilva]

Yes, otherwise the dependency validator thinks this dependency is not used. It's needed but it's required via require.resolve() instead of require(), so the automatic detection does not work. The same workaround is used in webpack-configs/common.ts for loaders.

[Meligy]

For the record, I think it's not completely fixed.

See #7117

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}