BAEL-2891 Add a new section in the Mockito Annotations article

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

@@ -0,0 +1,38 @@
+package org.baeldung.mockito;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.*;
+import org.mockito.junit.MockitoJUnitRunner;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import static org.junit.Assert.assertEquals;
+
+@RunWith(MockitoJUnitRunner.class)
+public class MockitoInjectIntoSpyUnitTest {
+
+    @Before
+    public void init() {
+        MockitoAnnotations.initMocks(this);
+        spyDic = Mockito.spy(new MyDictionary(wordMap));
+    }
+
+    @Mock
+    private Map<String, String> wordMap;
+
+    @InjectMocks
+    private MyDictionary dic = new MyDictionary();
+
+    private MyDictionary spyDic;
+
+    @Test
+    public void whenUseInjectMocksAnnotation_thenCorrect2() {
+        Mockito.when(wordMap.get("aWord")).thenReturn("aMeaning");
+
+        assertEquals("aMeaning", spyDic.getMeaning("aWord"));
+    }
+}

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

@@ -11,6 +11,10 @@ class MyDictionary {
         wordMap = new HashMap<>();
     }
 
+    MyDictionary(Map<String, String> wordMap) {
+        this.wordMap = wordMap;
+    }
+
     public void add(final String word, final String meaning) {
         wordMap.put(word, meaning);
     }