add: bootstrap file

Author: Matthias Leutenegger

.github/workflows/tests.yml

@@ -81,7 +81,7 @@ jobs:
       - name: run phpunit
         run: vendor/bin/phpunit -d memory_limit=1G -c "tests/phpunit.xml" tests/
       - name: generate coverage
-        run: phpdbg -qrr vendor/bin/phpunit -d memory_limit=4G --coverage-clover=coverage.xml -c "tests/phpunit.xml" tests/
+        run: phpdbg -qrr vendor/bin/phpunit -d memory_limit=4G --process-isolation --coverage-clover=coverage.xml -c "tests/phpunit.xml" tests/
         if: ${{ matrix.php == '7.4' && matrix.recipe == '4.x-dev' }}
       - name: submit coverage
         uses: codecov/codecov-action@v2

phpstan.neon

@@ -1,4 +1,6 @@
 parameters:
+    bootstrapFiles:
+        - bootstrap.php
     earlyTerminatingMethodCalls:
         SilverStripe\Control\Controller:
             - redirect