angular-cn/integration/language_service_plugin/README.md

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# Angular Language Service Test
This directory is an integration test for `@angular/language-service` to ensure
that various versions of the server can be loaded in the supported versions of
TypeScript's language service.
## New supported version of TypeScript
To add a new supported version of TypeScript:
1) Create directory in `typescripts` to hold the new version following the pattern
of the other versions.
2) Add the directory name to the end of the `TYPESCRIPTS` variable in the
`scripts/env.sh` file.
3) Run `scripts/update_golden.sh` to generate the expected files.
4) Verify the expected output is reasonable by comparing to a known good output
from a previous version.
## Update golden files
If the expected output needs to be updated run `scripts/update_golden.sh` to
update the expected output of the server.
## Adding a new fixture
Currently there is no automated way to produce a new fixture. The way the
current fixtures were created was to hack a version of tsserver.js to write the
commands from `VSCode` to a file while performing the operation to be tested.
I also hand modified the input to remove superfluous request.
Once a new fixture is created:
1) Add the fixture base name (without the .json) to `FIXTURES` in
`scripts/env.sh`.
2) Run `scripts/udpate_golden.sh` to produce the expected output files.
3) Hand validate the expected output is reasonable.