doc/test: document the FULL_ICU_PREFER_NPM

- also, test with FULL_ICU_PREFER_NPM=1

Author: srl295

.github/workflows/test.yml renamed to .github/workflows/test-gh.yml

@@ -1,4 +1,4 @@
-name: Integration Test
+name: Integration Test GitHub
 
 on: [push, pull_request]
 
@@ -28,4 +28,4 @@ jobs:
     - name: Install full-icu
       run: docker run --rm  -v $(pwd):/usr/src/app -w /usr/src/app  ${{ matrix.container }} npm i --no-package-lock --unsafe-perm
     - name: Test full-icu
-      run: docker run --rm  -v $(pwd):/usr/src/app -w /usr/src/app  ${{ matrix.container }} --icu-data-dir=. ./full-icu-test/test.js
+      run: docker run --rm -e NODE_ICU_DATA=. -v $(pwd):/usr/src/app -w /usr/src/app  ${{ matrix.container }} node ./full-icu-test/test.js

.github/workflows/test-npm.yml

@@ -0,0 +1,24 @@
+name: Integration Test npm
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        container:
+        - node:12
+        - node:12-slim
+        # Will fail on versions that aren't in icu4c-data
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/checkout@v2
+      with:
+        repository: nodejs/full-icu-test
+        path: full-icu-test
+    - name: Install full-icu
+      run: docker run --rm  -v $(pwd):/usr/src/app -w /usr/src/app  ${{ matrix.container }} env FULL_ICU_PREFER_NPM=1 npm i --no-package-lock --unsafe-perm
+    - name: Test full-icu
+      run: docker run --rm -e NODE_ICU_DATA=. -v $(pwd):/usr/src/app -w /usr/src/app  ${{ matrix.container }} node ./full-icu-test/test.js

README.md

@@ -1,11 +1,14 @@
 # full-icu-npm
 
-Install full ICU data
+Install full ICU data from GitHub or npm
 
 ### To use
 
 `npm install full-icu`
 
+Note: Set env var `FULL_ICU_PREFER_NPM=true` to prefer using the `icu4c-data` npm module,
+otherwise the default is now to load from ICU4C’s GitHub release.
+
 ### To install globally
 
 `npm install -g full-icu`