From 652fe88bdf31fcf5792bbbaf1dbb38dfb1c7ddc5 Mon Sep 17 00:00:00 2001
From: francis-n440 <ndungufrancis440@gmail.com>
Date: Mon, 27 Oct 2025 22:38:46 +0300
Subject: [PATCH] BAEL-9352: Mocking Object Properties With Mockito

---
 .../MockingObjectProperties.java              | 15 +++++++
 .../MockingObjectPropertiesUnitTest.java      | 43 +++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 testing-modules/mockito-4/src/main/java/com/baeldung/mockingobjectproperties/MockingObjectProperties.java
 create mode 100644 testing-modules/mockito-4/src/test/java/com/baeldung/mockingobjectproperties/MockingObjectPropertiesUnitTest.java

diff --git a/testing-modules/mockito-4/src/main/java/com/baeldung/mockingobjectproperties/MockingObjectProperties.java b/testing-modules/mockito-4/src/main/java/com/baeldung/mockingobjectproperties/MockingObjectProperties.java
new file mode 100644
index 000000000000..0a77dbc0c6b8
--- /dev/null
+++ b/testing-modules/mockito-4/src/main/java/com/baeldung/mockingobjectproperties/MockingObjectProperties.java
@@ -0,0 +1,15 @@
+package com.baeldung.mockingobjectproperties;
+
+import javax.servlet.http.HttpServletRequest;
+
+public class MockingObjectProperties {
+
+    public Object getSearchAttribute(HttpServletRequest request) {
+        return request.getAttribute("search");
+    }
+
+    public void printSearchAttribute(HttpServletRequest request) {
+        Object value = getSearchAttribute(request);
+        System.out.println("Search attribute: " + value);
+    }
+}
diff --git a/testing-modules/mockito-4/src/test/java/com/baeldung/mockingobjectproperties/MockingObjectPropertiesUnitTest.java b/testing-modules/mockito-4/src/test/java/com/baeldung/mockingobjectproperties/MockingObjectPropertiesUnitTest.java
new file mode 100644
index 000000000000..f39233ade0f3
--- /dev/null
+++ b/testing-modules/mockito-4/src/test/java/com/baeldung/mockingobjectproperties/MockingObjectPropertiesUnitTest.java
@@ -0,0 +1,43 @@
+package com.baeldung.mockingobjectproperties;
+
+import static org.mockito.Mockito.*;
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.util.HashMap;
+import java.util.Map;
+import javax.servlet.http.HttpServletRequest;
+import org.junit.jupiter.api.Test;
+
+public class MockingObjectPropertiesUnitTest {
+
+    @Test
+    void givenMockRequest_whenSimulatingDynamicAttributes_thenBehavesLikeRealObject() {
+        HttpServletRequest mockRequest = mock(HttpServletRequest.class);
+        Map<String, Object> attributes = new HashMap<>();
+
+        // Simulate internal state for getAttribute()
+        when(mockRequest.getAttribute(anyString()))
+                .thenAnswer(invocation -> attributes.get(invocation.getArgument(0)));
+
+        // Intercept setAttribute() calls to store values
+        doAnswer(invocation -> {
+            attributes.put(invocation.getArgument(0), invocation.getArgument(1));
+            return null;
+        }).when(mockRequest).setAttribute(anyString(), any());
+
+        // Use the main class
+        MockingObjectProperties helper = new MockingObjectProperties();
+
+        // Set and get attribute
+        mockRequest.setAttribute("search", "Mockito Example");
+        Object value = helper.getSearchAttribute(mockRequest);
+
+        // Assert the value is correctly retrieved
+        assertEquals("Mockito Example", value);
+
+        // Verify interactions
+        verify(mockRequest).setAttribute("search", "Mockito Example");
+        verify(mockRequest).getAttribute("search");
+        verify(mockRequest, never()).getAttribute("nonexistent");
+    }
+}