tests: enable closures again

Author: TorstenDittmann

tests/src/integration/_utils.php

@@ -7,7 +7,8 @@ function assert_exception_thrown(callable $callback): void
 {
     try {
         call_user_func($callback);
-        exit(1);
     } catch (\Throwable $th) {
+        return;
     }
+    throw new Exception("Excption was not thrown", 255);
 }

tests/src/integration/closure.php

@@ -6,7 +6,7 @@
 assert(test_closure()('works') === 'works');
 
 // Closure once
-// $closure = test_closure_once('test');
+$closure = test_closure_once('test');
 
-// assert($closure() === 'test');
-// assert_exception_thrown(fn () => $closure());
+assert(call_user_func($closure) === 'test');
+assert_exception_thrown($closure);