Added test classes for BAEL-1907

spring-boot/src/test/java/org/baeldung/MockAnnotationTest.java

@@ -0,0 +1,33 @@
+package org.baeldung;
+
+import org.baeldung.repository.UserRepository;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.junit.MockitoJUnitRunner;
+
+@RunWith(MockitoJUnitRunner.class)
+public class MockAnnotationTest {
+    
+    @Mock
+    UserRepository mockRepository;
+
+    @Test
+    public void testMockAnnotation() {
+        Mockito.when(mockRepository.count()).thenReturn(123L);
+        long userCount = mockRepository.count();
+        Assert.assertEquals(123L, userCount);
+        Mockito.verify(mockRepository).count();
+    }
+    
+    @Test
+    public void testMockitoMockMethod() {
+        UserRepository localMockRepository = Mockito.mock(UserRepository.class);
+        Mockito.when(localMockRepository.count()).thenReturn(111L);
+        long userCount = localMockRepository.count();
+        Assert.assertEquals(111L, userCount);
+        Mockito.verify(localMockRepository).count();  
+    }
+}

spring-boot/src/test/java/org/baeldung/MockBeanAnnotationIntegrationTest.java

@@ -0,0 +1,31 @@
+package org.baeldung;
+
+import org.baeldung.repository.UserRepository;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mockito;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.context.ApplicationContext;
+import org.springframework.test.context.junit4.SpringRunner;
+
+
+@RunWith(SpringRunner.class)
+public class MockBeanAnnotationIntegrationTest {
+    
+    @MockBean
+    UserRepository mockRepository;
+    
+    @Autowired
+    ApplicationContext context;
+    
+    @Test
+    public void testMockBean() {
+        Mockito.when(mockRepository.count()).thenReturn(123L);
+        UserRepository userRepoFromContext = context.getBean(UserRepository.class);
+        long userCount = userRepoFromContext.count();
+        Assert.assertEquals(123L, userCount);
+        Mockito.verify(mockRepository).count();
+    }
+}