test(vscode): add grammar test

[so1ve]

resolves #3840

I'll create a new library later and use vitest for snapshot.

[johnsoncodehk]

Could we also have a test for #3891?

[so1ve]

Sure, I'll add it later. I need to handle newlines first :(

[so1ve]

The tests are failing but I don't know why.

Could we also have a test for #3891?

I tried to, but it seemed to only occur when using language-tools and angular language service together.

[pkg-pr-new]

commit: 7ea9f09

vue-component-meta

pnpm add https://pkg.pr.new/vuejs/language-tools/vue-component-meta@3861

vue-component-type-helpers

pnpm add https://pkg.pr.new/vuejs/language-tools/vue-component-type-helpers@3861

@vue/language-core

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-core@3861

@vue/language-plugin-pug

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-plugin-pug@3861

@vue/language-server

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-server@3861

@vue/language-service

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/language-service@3861

vue-tsc

pnpm add https://pkg.pr.new/vuejs/language-tools/vue-tsc@3861

@vue/typescript-plugin

pnpm add https://pkg.pr.new/vuejs/language-tools/@vue/typescript-plugin@3861

Open in Stackblitz