fixed test with null Persistence-Manager and wrapped RuntimeExceptions

aspectj/src/main/java/com/example/support/DomaenenAspekt.aj

@@ -7,7 +7,7 @@ import org.aspectj.lang.reflect.MethodSignature;
 
 public privileged aspect DomaenenAspekt {
 
-	private PersistenceManager pm;
+	private PersistenceManager pm = new PersistenceManager();
 	public interface DomaenenObjekt {}
 	pointcut domainObject() : within(com.example.domain.*);
 
@@ -29,9 +29,12 @@ public privileged aspect DomaenenAspekt {
 			Object result=proceed();
 			pm.commit();
 			return result;
+		} catch(RuntimeException e) {
+			pm.rollback();
+			throw e;
 		} catch(Exception e) {
 			pm.rollback();
-			throw new RuntimeException("Fehler beim transaktionalem AusfŸhren",e);
+			throw new RuntimeException(e);
 		}
 	}
 

aspectj/src/main/java/com/example/support/PersistenceManager.java

@@ -1,11 +1,18 @@
 package com.example.support;
 
-public interface PersistenceManager {
-	void begin();
-	void commit();
-	void rollback();
+public class PersistenceManager {
+	void begin() {}
+	void commit() {}
+	void rollback() {}
 
-	<T> T persist(T entity);
-	void delete(Object entity);
-	<T> T load(Class<T> type, long id);
+	<T> T persist(T entity) { return entity; }
+	void delete(Object entity) {}
+
+	<T> T load(Class<T> type, long id) {
+		try {
+			return type.newInstance();
+		} catch (Exception e) {
+			throw new RuntimeException(e);
+		}
+	}
 }

aspectj/src/test/java/com/example/domain/KontoTest.java

@@ -25,7 +25,7 @@ public void kontoShouldNotAllowNegativeValue() {
 
     @Test(expected = IllegalStateException.class)
     public void kontoShouldNotAllowValueToBecomeNegative() {
-    	new Konto(1,"test").buche(-2);
+    	new Konto(11,"test").buche(-20);
     }
 
     @Test(expected = IllegalStateException.class)