test(normalize-class): add tests and schema for abstract type and empty child normalization

Author: rawvoid

plugins/src/test/java/io/github/rawvoid/jaxb/plugin/NormalizeClassPluginTest.java

@@ -20,6 +20,7 @@
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
+import java.lang.reflect.Modifier;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -42,13 +43,19 @@ void testNormalizeDuplicateClasses() throws Exception {
             .collect(Collectors.groupingBy(Class::getSimpleName));
 
         assertThat(classBySimpleName).containsKeys("NormalizeRoot", "Group", "AnotherGroup", "Entry");
+        assertThat(classBySimpleName).containsKey("BaseType");
+        assertThat(classBySimpleName).doesNotContainKey("EmptyChild");
         assertThat(classBySimpleName.get("Entry")).hasSize(1);
 
         var groupClass = classBySimpleName.get("Group").getFirst();
         var anotherGroupClass = classBySimpleName.get("AnotherGroup").getFirst();
         var entryClass = classBySimpleName.get("Entry").getFirst();
+        var baseTypeClass = classBySimpleName.get("BaseType").getFirst();
+        var normalizeRootClass = classBySimpleName.get("NormalizeRoot").getFirst();
 
         assertThat(groupClass.getDeclaredField("entry").getType()).isEqualTo(entryClass);
         assertThat(anotherGroupClass.getDeclaredField("entry").getType()).isEqualTo(entryClass);
+        assertThat(normalizeRootClass.getDeclaredField("emptyChild").getType()).isEqualTo(baseTypeClass);
+        assertThat(Modifier.isAbstract(baseTypeClass.getModifiers())).isFalse();
     }
 }

plugins/src/test/resources/schema/normalize-class.xsd

@@ -48,8 +48,17 @@
                     </xs:sequence>
                 </xs:complexType>
             </xs:element>
+            <xs:element name="emptyChild" type="tns:EmptyChild"/>
         </xs:sequence>
     </xs:complexType>
 
+    <xs:complexType name="BaseType" abstract="true"/>
+
+    <xs:complexType name="EmptyChild">
+        <xs:complexContent>
+            <xs:extension base="tns:BaseType"/>
+        </xs:complexContent>
+    </xs:complexType>
+
     <xs:element name="normalizeRoot" type="tns:NormalizeRoot"/>
 </xs:schema>