chore: adding CI test on Windows (#359)

Author: bahmutov

.circleci/config.yml

@@ -1,8 +1,10 @@
 # https://circleci.com/docs/2.0/configuration-reference/
 version: 2.1
 orbs:
-  cypress: cypress-io/cypress@1.19.2 # used to run e2e tests
+  # https://github.com/cypress-io/circleci-orb
+  cypress: cypress-io/cypress@1.26.0 # used to run e2e tests
   node: circleci/node@1.1.6 # used to publish new NPM version
+  win: circleci/windows@2 # run a test job on Windows
 
 jobs:
   unit:
@@ -484,6 +486,42 @@ workflows:
                   ../../node_modules/.bin/only-covered main.js
                 working_directory: examples/one-spec
 
+      - cypress/run:
+          name: Windows test
+          executor:
+            # executor comes from the "windows" orb
+            name: win/default
+            shell: bash.exe
+          no-workspace: true
+          start: npm run start:windows --prefix examples/all-files
+          wait-on: 'http://localhost:1234'
+          command: npx cypress run --project examples/all-files
+          # store screenshots and videos
+          store_artifacts: true
+          post-steps:
+            - run: cat examples/all-files/.nyc_output/out.json
+            - run: cat examples/all-files/coverage/coverage-final.json
+            # store the created coverage report folder
+            # you can click on it in the CircleCI UI
+            # to see live static HTML site
+            - store_artifacts:
+                path: examples/all-files/coverage
+            # make sure the examples captures 100% of code
+            - run:
+                command: npx nyc report --check-coverage true --lines 100
+                working_directory: examples/all-files
+            - run:
+                name: Check code coverage 📈
+                # we will check the final coverage report
+                # to make sure it only has files we are interested in
+                # because there are files covered at 0 in the report
+                command: |
+                  ../../node_modules/.bin/check-coverage main.js
+                  ../../node_modules/.bin/check-coverage second.js
+                  ../../node_modules/.bin/check-coverage not-covered.js
+                  ../../node_modules/.bin/only-covered --from coverage/coverage-final.json main.js second.js not-covered.js
+                working_directory: examples/all-files
+
       - publish:
           filters:
             branches:
@@ -506,3 +544,4 @@ workflows:
             - example-docker-paths
             - example-use-webpack
             - example-all-files
+            - Windows test

examples/all-files/package.json

@@ -3,6 +3,7 @@
   "description": "Report all files",
   "scripts": {
     "start": "../../node_modules/.bin/parcel serve index.html",
+    "start:windows": "npx bin-up parcel serve index.html",
     "cy:open": "../../node_modules/.bin/cypress open",
     "cy:run": "../../node_modules/.bin/cypress run",
     "dev": "../../node_modules/.bin/start-test 1234 cy:open",