Set directive for asserts (#682)

Author: kubawerlos

.github/workflows/ci.yaml

@@ -46,7 +46,7 @@ jobs:
  - uses: shivammathur/setup-php@v2
  with:
  php-version: ${{ matrix.php-version }}
- ini-values: pcov.directory=$GITHUB_WORKSPACE
+ ini-values: pcov.directory=$GITHUB_WORKSPACE, zend.assertions=1
  coverage: ${{ steps.coverage-driver.outputs.result }}
  - id: composer-cache
  run: echo "::set-output name=dir::$(composer config cache-files-dir)"