harden test code

Author: hansva

engine/src/test/java/org/apache/hop/workflow/WorkflowTest.java

@@ -23,9 +23,11 @@
 import java.util.concurrent.CountDownLatch;
 import org.apache.hop.core.HopEnvironment;
 import org.apache.hop.core.exception.HopException;
+import org.apache.hop.core.logging.HopLogStore;
 import org.apache.hop.workflow.engine.IWorkflowEngine;
 import org.apache.hop.workflow.engines.local.LocalWorkflowEngine;
 import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
 class WorkflowTest {
@@ -90,6 +92,13 @@ static void beforeClass() throws HopException {
     HopEnvironment.init();
   }
 
+  @BeforeEach
+  void before() {
+    if (!HopLogStore.isInitialized()) {
+      HopLogStore.init();
+    }
+  }
+
   /**
    * When a workflow is scheduled twice, it gets the same log channel Id and both logs get merged
    */