Continue on error when running tests using unstable PHP version

Author: sebastianbergmann

.github/workflows/ci.yaml

@@ -11,6 +11,7 @@ name: CI
 env:
   COMPOSER_ROOT_VERSION: "8.5.x-dev"
   PHP_VERSION: 8.4
+  UNSTABLE_PHP_VERSION: 8.5
 
 permissions:
   contents: read
@@ -141,7 +142,13 @@ jobs:
       - name: Install dependencies with Composer
         run: php ./tools/composer install --no-ansi --no-interaction --no-progress
 
-      - name: Run tests with PHPUnit
+      - name: Run tests with PHPUnit using stable PHP version
+        if: matrix.php-version != ${{ env.UNSTABLE_PHP_VERSION }}
+        run: php ./phpunit --testsuite unit
+
+      - name: Run tests with PHPUnit using unstable PHP version
+        if: matrix.php-version == ${{ env.UNSTABLE_PHP_VERSION }}
+        continue-on-error: true
         run: php ./phpunit --testsuite unit
 
   end-to-end-tests:
@@ -193,7 +200,13 @@ jobs:
       - name: Install dependencies with Composer
         run: php ./tools/composer install --no-ansi --no-interaction --no-progress
 
-      - name: Run tests with PHPUnit
+      - name: Run tests with PHPUnit using stable PHP version
+        if: matrix.php-version != ${{ env.UNSTABLE_PHP_VERSION }}
+        run: php ./phpunit --testsuite end-to-end
+
+      - name: Run tests with PHPUnit using unstable PHP version
+        if: matrix.php-version == ${{ env.UNSTABLE_PHP_VERSION }}
+        continue-on-error: true
         run: php ./phpunit --testsuite end-to-end
 
   code-coverage: