Added a test case ensures nested ParameterizedType equality

Author: harawata

src/test/java/org/apache/ibatis/reflection/TypeParameterResolverTest.java

@@ -28,6 +28,7 @@
 import java.util.Date;
 import java.util.List;
 import java.util.Map;
+import java.util.Map.Entry;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.Future;
@@ -588,4 +589,21 @@ public List<Integer> m() {
     }
   }
 
+  @Test
+  void shouldParameterizedTypesWithOwnerTypeBeEqual() throws Exception {
+    class Clazz {
+      @SuppressWarnings("unused")
+      public Entry<String, Integer> entry() {
+        return null;
+      }
+    }
+
+    Type typeJdk = Clazz.class.getMethod("entry").getGenericReturnType();
+
+    Class<?> clazz = Level2Mapper.class;
+    Method method = clazz.getMethod("selectEntry");
+    Type typeMybatis = TypeParameterResolver.resolveReturnType(method, clazz);
+
+    assertEquals(typeMybatis, typeJdk);
+  }
 }

src/test/java/org/apache/ibatis/reflection/typeparam/Level0Mapper.java

@@ -1,5 +1,5 @@
 /*
- *    Copyright 2009-2022 the original author or authors.
+ *    Copyright 2009-2025 the original author or authors.
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
@@ -17,6 +17,7 @@
 
 import java.util.List;
 import java.util.Map;
+import java.util.Map.Entry;
 
 public interface Level0Mapper<L, M, N> {
 
@@ -46,6 +47,8 @@ public interface Level0Mapper<L, M, N> {
 
   Map<N, M> selectMap();
 
+  Entry<N, M> selectEntry();
+
   N[] selectArray(List<N>[] param);
 
   N[][] selectArrayOfArray();