Add per-platform CI jobs to enable Windows tests, multiple Node.js ve…

…rsions

Summary:
Enables Windows test runs in CircleCI. Partially resolves this discussion: facebook#876 (comment).

- Adds `test-windows` job via the `circleci/windows` orb (inspired by the main react-native repo CircleCI config: https://fburl.com/hxyx4han).
    - `test-linux` job continues to use fast `cimg/node` images.
- Parametarises `node-version` on the `test-linux` and `test-windows` jobs, and assigns as a matrix of versions (remains a single run against `14.17.0` for now).
- Drops the `yarn_run` command in favour of YAML anchor to explicitly mix in `&secure_unset_publish_token` behaviour using CircleCI's `environment` option, which is cross platform (see test plan).

NOTE: Since Windows tests are failing en masse, the branch filter `only: /windows\/.*/` is added, effectively disabling this job except on `windows/`-prefixed branches (which will provide a hook for fixing these in future).

```
Test Suites: 18 failed, 92 passed, 110 total
Tests:       232 failed, 1 skipped, 1286 passed, 1519 total
Snapshots:   20 failed, 403 passed, 423 total
Time:        87.927 s
Ran all test suites.
```

Changelog: [Internal]

Differential Revision: D40805193

fbshipit-source-id: a86689f6fc864483c12677e573df5c287aa63181

.circleci/config.yml

@@ -1,5 +1,15 @@
+# CircleCI configuration
+# https://circleci.com/docs/configuration-reference/
+
 version: 2.1
 
+orbs:
+  win: circleci/windows@2.4.0
+
+secure_unset_publish_token: &secure_unset_publish_token
+  environment:
+    NPM_TOKEN: ''
+
 commands:
   yarn_install:
     description: "A wrapper to yarn install with caching"
@@ -11,52 +21,62 @@ commands:
       - restore_cache:
           keys:
             - dependencies-{{ .Branch }}-{{ checksum "yarn.lock" }}
-            # Fallback in case checksum fails
             - dependencies-{{ .Branch }}-
       - run:
           name: Installing dependencies
-          command: NPM_TOKEN= yarn --frozen-lockfile --non-interactive
+          command: yarn --frozen-lockfile --non-interactive
           working_directory: << parameters.working_directory >>
       - save_cache:
           paths:
             - node_modules
           key: dependencies-{{ .Branch }}-{{ checksum "yarn.lock" }}
 
-  yarn_run:
-    description: "A wrapper to execute yarn commands in a safe way"
-    parameters:
-      working_directory:
-        type: string
-        default: ""
-      command:
-        type: string
+  install_and_run_tests:
+    description: |
+      Install dependencies and run tests (common steps for test-<platform> jobs)
     steps:
-      - run:
-          command: NPM_TOKEN= yarn run << parameters.command >>
-          working_directory: << parameters.working_directory >>
+      - yarn_install
+      - run: yarn jest --ci --maxWorkers 4 --reporters=default --reporters=jest-junit
+      - store_test_results:
+          path: ./reports/
 
 jobs:
   run-js-checks:
+    <<: *secure_unset_publish_token
     docker:
       - image: cimg/node:14.17
     steps:
       - checkout
       - yarn_install
-      - yarn_run:
-          command: test-ci
-      - yarn_run:
-          command: test-smoke
+      - run: yarn test-ci
+      - run: yarn test-smoke
 
-  test-node-14:
+  test-linux:
+    <<: *secure_unset_publish_token
+    parameters:
+      node-version:
+        type: string
     docker:
-      - image: cimg/node:14.17
+      - image: cimg/node:<< parameters.node-version >>
     steps:
       - checkout
-      - yarn_install
-      - yarn_run:
-          command: jest --ci --maxWorkers 4 --reporters=default --reporters=jest-junit
-      - store_test_results:
-          path: ./reports/
+      - install_and_run_tests
+
+  test-windows:
+    <<: *secure_unset_publish_token
+    parameters:
+      node-version:
+        type: string
+    executor:
+      name: win/default
+    steps:
+      - checkout
+      - run:
+          name: Install Node.js and Yarn
+          command: |
+            choco install -y nodejs --version << parameters.node-version >>
+            choco install -y yarn
+      - install_and_run_tests
 
   publish-to-npm:
     docker:
@@ -68,12 +88,21 @@ jobs:
       - run: npm run publish
       - run: rm ~/.npmrc
 
-# Workflows enables us to run multiple jobs in parallel
 workflows:
   build-and-deploy:
     jobs:
       - run-js-checks
-      - test-node-14
+      - test-linux:
+          matrix:
+            parameters:
+              node-version: ["14.17.0"]
+      - test-windows:
+          matrix:
+            parameters:
+              node-version: ["14.17.0"]
+          filters:
+            branches:
+              only: /windows\/.*/
       - publish-to-npm:
           filters:
             branches: