Add unit testing

.github/workflows/ci.yml

@@ -0,0 +1,11 @@
+name: CI
+on: [push]
+jobs:
+  build-test:
+  runs-on: ubuntu-latest
+  steps:
+    - uses: actions/checkout@v3
+    - run: echo "The ${{ github.repository }} repository has been cloned to the runner."
+    - uses: php-action/composer@v6
+    - run: echo "Composer dependancies have been installed"
+    - run: vendor/bin/phpunit

composer.json

@@ -2,14 +2,15 @@
     "name": "donutsnl/ticketfilter",
     "description": "Searches for foreign identifiers and merge tickets using these identifiers",
     "license": "GPL-3.0-or-later",
-    "require": {
-    },
     "authors": [
         {
             "name": "Chris Gralike",
             "email": "[email protected]",
             "homepage": "https://github.com/DonutsNL/",
             "role": "Developer"
         }
-    ]
+    ],
+    "require-dev": {
+        "symfony/test-pack": "^1.1"
+    }
 }