Run tests on Windows

Author: vhenzl

.github/workflows/run-tests.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        os: [ubuntu-latest]
+        os: [ubuntu-latest, windows-latest]
         php: [7.4]
         dependency-version: [prefer-lowest, prefer-stable]
 

composer.json

@@ -42,7 +42,7 @@
         }
     },
     "scripts": {
-        "test": "vendor/bin/phpunit"
+        "test": "phpunit"
     },
     "config": {
         "sort-packages": true