add coc-test integration tests and CI

- add integration tests for extension activation, buffer filetype
  handling and snippet expansion, run through coc-test on nvim/vim
- add npm test scripts and GitHub Actions workflow with nvim/vim matrix
- add CI status badge to readme and ignore test dir in npm package
- export checkBufferVariable and enableSnippetsFiletype for tests
- fix TS6 type errors in catch clauses and nvim.call return types

Author: chemzqm

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: CI
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+
+jobs:
+  test:
+    name: coc-test (${{ matrix.editor }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        editor: [nvim, vim]
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Install editors
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y neovim vim
+
+      - name: Typecheck
+        run: npm run lint
+
+      - name: Integration tests (${{ matrix.editor }})
+        run: npm run test:integration:${{ matrix.editor }}

.npmignore

@@ -1,7 +1,7 @@
 src
 *.map
 tsconfig.json
-tests
+test
 .ignore
 yarn.lock
 esbuild.js

Readme.md

@@ -2,6 +2,8 @@
 
 Snippets solution for [coc.nvim](https://github.com/neoclide/coc.nvim)
 
+[![CI](https://github.com/neoclide/coc-snippets/actions/workflows/ci.yml/badge.svg)](https://github.com/neoclide/coc-snippets/actions/workflows/ci.yml)
+
 ![2019-03-23 00_09_39](https://user-images.githubusercontent.com/251450/54837017-62891300-4d00-11e9-9e53-49742a1a33f2.gif)
 
 _Snippet preview requires [neovim 0.4 or latest vim8](https://github.com/neoclide/coc.nvim/wiki/F.A.Q#how-to-make-preview-window-shown-aside-with-pum)_