added test checking DiscriminatorMapping for EntityExportData

common/data/src/test/java/org/thingsboard/server/common/data/sync/ie/EntityExportDataTest.java

@@ -0,0 +1,52 @@
+/**
+ * Copyright © 2016-2026 The Thingsboard Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.thingsboard.server.common.data.sync.ie;
+
+import com.fasterxml.jackson.annotation.JsonSubTypes;
+import org.junit.jupiter.api.Test;
+import org.thingsboard.server.common.data.EntityType;
+
+import java.util.Arrays;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class EntityExportDataTest {
+
+    @Test
+    public void newInstance_shouldSupportAllJsonSubTypes() {
+        JsonSubTypes subTypes = EntityExportData.class.getAnnotation(JsonSubTypes.class);
+        assertThat(subTypes).as("EntityExportData must have @JsonSubTypes annotation").isNotNull();
+
+        Set<String> jsonSubTypeNames = Arrays.stream(subTypes.value())
+                .map(JsonSubTypes.Type::name)
+                .collect(Collectors.toSet());
+
+        for (String typeName : jsonSubTypeNames) {
+            EntityType entityType = EntityType.valueOf(typeName);
+            EntityExportData<?> instance = EntityExportData.newInstance(entityType);
+
+            assertThat(instance)
+                    .as("newInstance(%s) should not return null", typeName)
+                    .isNotNull();
+            assertThat(instance.getEntityType())
+                    .as("newInstance(%s).getEntityType() should return %s", typeName, entityType)
+                    .isEqualTo(entityType);
+        }
+    }
+
+}