src/test/java/net/hostsharing/hsadminng/hs/office/usecases/HsOfficeUseCasesTest.java

@@ -25,6 +25,7 @@ class HsOfficeUseCasesTest extends UseCaseTest {
 
     @Test
     @Order(1010)
+    @Produces("Partner: Test AG")
     void shouldCreatePartner() {
         new CreatePartner(this, "Partner: Test AG")
                 .given("partnerNumber", 30001)
@@ -46,6 +47,7 @@ class HsOfficeUseCasesTest extends UseCaseTest {
 
     @Test
     @Order(2010)
+    @Requires("Partner: Test AG")
     void shouldCreateSelfDebitorForPartner() {
         new CreateSelfDebitorForPartner(this, "Debitor: Test AG - main debitor")
                 .given("partnerPersonUuid", "%{Person: Test AG}")

src/test/java/net/hostsharing/hsadminng/hs/office/usecases/MethodReferenceExample.java

@@ -0,0 +1,34 @@
+package net.hostsharing.hsadminng.hs.office.usecases;
+
+import java.lang.invoke.SerializedLambda;
+import java.lang.reflect.Method;
+import java.util.function.Consumer;
+
+public class MethodReferenceExample {
+
+    public static void myMethod(String input) {
+        System.out.println("Hello from myMethod, input: " + input);
+    }
+
+    public static void main(String[] args) {
+        // Create a method reference
+        Consumer<String> methodRef = MethodReferenceExample::myMethod;
+
+        // Use reflection to retrieve method reference info
+        try {
+            // Step 1: Get the method 'writeReplace' via reflection
+            Method writeReplace = methodRef.getClass().getDeclaredMethod("writeReplace");
+            writeReplace.setAccessible(true);
+
+            // Step 2: Invoke 'writeReplace' to get a SerializedLambda
+            SerializedLambda serializedLambda = (SerializedLambda) writeReplace.invoke(methodRef);
+
+            // Step 3: Get the method name using the SerializedLambda
+            String methodName = serializedLambda.getImplMethodName();
+
+            System.out.println("Original method name: " + methodName);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+}

src/test/java/net/hostsharing/hsadminng/hs/office/usecases/Produces.java

@@ -0,0 +1,14 @@
+package net.hostsharing.hsadminng.hs.office.usecases;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+import static java.lang.annotation.ElementType.METHOD;
+import static java.lang.annotation.RetentionPolicy.CLASS;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+@Target(METHOD)
+@Retention(RUNTIME)
+public @interface Produces {
+    String value();
+}

src/test/java/net/hostsharing/hsadminng/hs/office/usecases/Requires.java

@@ -0,0 +1,13 @@
+package net.hostsharing.hsadminng.hs.office.usecases;
+
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+import static java.lang.annotation.ElementType.METHOD;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+@Target(METHOD)
+@Retention(RUNTIME)
+public @interface Requires {
+    String value();
+}

src/test/java/net/hostsharing/hsadminng/hs/office/usecases/UseCase.java

@@ -60,6 +60,8 @@ public abstract class UseCase<T extends UseCase<?>> {
         givenProperties.forEach((key, value) -> log("| " + key + " | " + value + " |"));
         log("");
         requirements.forEach((alias, factory) -> factory.apply(alias).run().keep());
+
+        // final var testMethodProduct =  testInfo.getTestMethod().map(m -> m.getAnnotation(Produces.class).value()).orElseThrow();
         return run();
     }
 

src/test/java/net/hostsharing/hsadminng/hs/office/usecases/UseCaseTest.java

@@ -16,13 +16,16 @@ import org.springframework.boot.test.web.server.LocalServerPort;
 
 import java.io.FileWriter;
 import java.io.PrintWriter;
+import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.Map;
 import java.util.UUID;
 import java.util.stream.Collectors;
 
+import static java.util.Arrays.stream;
 import static org.assertj.core.api.Assertions.assertThat;
 
 public abstract class UseCaseTest extends ContextBasedTest {
@@ -67,13 +70,30 @@ public abstract class UseCaseTest extends ContextBasedTest {
                 }
         );
 
+        callPrerequisites(testInfo);
+
         final var testMethodName = testInfo.getTestMethod().map(Method::getName).orElseThrow();
         final var testMethodOrder =  testInfo.getTestMethod().map(m -> m.getAnnotation(Order.class).value()).orElseThrow();
         markdownFile = new PrintWriter(new FileWriter( testMethodOrder + "-" + testMethodName + ".md"));
         log("## Testcase " + testMethodName.replaceAll("([a-z])([A-Z]+)", "$1 $2"));
+
         currentTestInfo = testInfo; // FIXME: remove?
     }
 
+    private void callPrerequisites(final TestInfo testInfo) throws IllegalAccessException, InvocationTargetException {
+        final var testMethodRequired =  testInfo.getTestMethod().map(m -> m.getAnnotation(Requires.class).value()).orElse(null);
+        if (testMethodRequired != null) {
+            for (Method testMethod : getClass().getDeclaredMethods()) {
+                final var producesAnnot = testMethod.getAnnotation(Produces.class);
+                if (producesAnnot != null) {
+                    final var testMethodProduct = producesAnnot.value();
+                    if (testMethodProduct.equals(testMethodRequired))
+                       testMethod.invoke(this);
+                }
+            }
+        }
+    }
+
     @AfterEach
     void cleanup() {
         properties.clear();
@@ -82,7 +102,9 @@ public abstract class UseCaseTest extends ContextBasedTest {
 
     @SneakyThrows
     void log(final String output) {
-        markdownFile.println(output);
+        if (markdownFile != null) {
+            markdownFile.println(output);
+        }
     }
 
     static boolean containsAlias(final String alias) {