BAEL-1182 - mocking final classes and methods with Mockito (#3083)

testing-modules/mockito/src/test/java/org/baeldung/mockito/FinalList.java

@@ -0,0 +1,10 @@
+package org.baeldung.mockito;
+
+public class FinalList extends MyList {
+
+  @Override
+  public int size() {
+    return 1;
+  }
+
+}

testing-modules/mockito/src/test/java/org/baeldung/mockito/MockFinals.java

@@ -0,0 +1,35 @@
+package org.baeldung.mockito;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertNotEquals;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class MockFinals {
+
+      @Test
+      public void whenMockFinalClassMockWorks() {
+
+        FinalList finalList = new FinalList();
+
+        FinalList mock = mock(FinalList.class);
+        when(mock.size()).thenReturn(2);
+
+        assertNotEquals(mock.size(), finalList.size());
+
+      }
+
+    @Test
+    public void whenMockFinalMethodMockWorks() {
+
+      MyList myList = new MyList();
+
+      MyList mock = mock(MyList.class);
+      when(mock.finalMethod()).thenReturn(1);
+
+      assertNotEquals(mock.finalMethod(), myList.finalMethod());
+    }
+
+
+  }

testing-modules/mockito/src/test/java/org/baeldung/mockito/MyList.java

@@ -19,4 +19,7 @@ class MyList extends AbstractList<String> {
         // no-op
     }
 
+    final public int finalMethod() {
+        return 0;
+    }
 }

testing-modules/mockito/src/test/resources/mockito-extensions/org.mockito.plugins.MockMaker

@@ -0,0 +1 @@
+mock-maker-inline