added OperationResultTestMixin providing createOperationResult methods

infra/test-util/src/main/java/com/evolveum/midpoint/test/util/OperationResultTestMixin.java

@@ -0,0 +1,25 @@
+package com.evolveum.midpoint.test.util;
+
+import com.evolveum.midpoint.schema.result.OperationResult;
+import com.evolveum.midpoint.tools.testng.MidpointTestMixin;
+
+/**
+ * Mixin interface adding methods for {@link OperationResult} creation with context in its name.
+ * It is based on {@link MidpointTestMixin} and provides all its operations too.
+ */
+public interface OperationResultTestMixin extends MidpointTestMixin {
+
+    /**
+     * Creates new {@link OperationResult} with name equal to {@link #contextName()}.
+     */
+    default OperationResult createOperationResult() {
+        return new OperationResult(contextName());
+    }
+
+    /**
+     * Creates new {@link OperationResult} with name prefixed by {@link #contextName()}.
+     */
+    default OperationResult createOperationResult(String nameSuffix) {
+        return new OperationResult(contextName() + "." + nameSuffix);
+    }
+}