The current integration test for language service involves piping the
results of one process to another using Unix pipes.
This makes the test hard to debug, and hard to configure.
This commit refactors the integration test to use regular Jasmine
scaffolding.
More importantly, it tests the way the language service will actually
be installed by end users. Users would not have to add
`@angular/language-service` to the plugins section in tsconfig.json
Instead, all they need to do is install the *extension* from
the VS Code Marketplace and Angular Language Service will be loaded
as a global plugin.
PR Close#28168
The CLI app is now checked in, rather than generated dynamically with
`ng new`. This loses some assertion power, but gains hermeticity.
It also checks in lock files for all integration tests, avoiding
floating version numbers.
We'll need another place to integration test between changes in
the various repositories - but the angular/angular PR-blocking status
is not the right place to do this.
PR Close#21555
Keen Yee Liau
Igor Minar
Alex Eagle