BAEL-4756 - Mockito MockSettings (#10423)

* BAEL-4706 - Spring Boot with Spring Batch

* BAEL-3948 - Fix test(s) in spring-batch which leaves repository.sqlite
changed

* BAEL-4736 - Convert JSONArray to List of Object using camel-jackson

* BAEL-4756 - Mockito MockSettings

Co-authored-by: Jonathan Cook <jcook@sciops.esa.int>

testing-modules/mockito-2/src/main/java/com/baeldung/mockito/mocksettings/AbstractCoffee.java

@@ -0,0 +1,15 @@
+package com.baeldung.mockito.mocksettings;
+
+public abstract class AbstractCoffee {
+
+    protected String name;
+
+    protected AbstractCoffee(String name) {
+        this.name = name;
+    }
+
+    protected String getName() {
+        return name;
+    }
+
+}

testing-modules/mockito-2/src/main/java/com/baeldung/mockito/mocksettings/SimpleService.java

@@ -0,0 +1,10 @@
+package com.baeldung.mockito.mocksettings;
+
+public class SimpleService {
+
+    public SimpleService(SpecialInterface special) {
+        Runnable runnable = (Runnable) special;
+        runnable.run();
+    }
+
+}

testing-modules/mockito-2/src/main/java/com/baeldung/mockito/mocksettings/SpecialInterface.java

@@ -0,0 +1,5 @@
+package com.baeldung.mockito.mocksettings;
+
+public interface SpecialInterface {
+
+}

testing-modules/mockito-2/src/test/java/com/baeldung/mockito/mocksettings/MockSettingsUnitTest.java

@@ -0,0 +1,56 @@
+package com.baeldung.mockito.mocksettings;
+
+import static org.mockito.Answers.RETURNS_SMART_NULLS;
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Answers.CALLS_REAL_METHODS;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+import static org.mockito.Mockito.withSettings;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.exceptions.verification.SmartNullPointerException;
+import org.mockito.junit.MockitoJUnitRunner;
+
+import com.baeldung.mockito.fluentapi.Pizza;
+import com.baeldung.mockito.fluentapi.PizzaService;
+
+@RunWith(MockitoJUnitRunner.class)
+public class MockSettingsUnitTest {
+
+    @Test(expected = SmartNullPointerException.class)
+    public void whenServiceMockedWithSmartNulls_thenExceptionHasExtraInfo() {
+        PizzaService service = mock(PizzaService.class, withSettings().defaultAnswer(RETURNS_SMART_NULLS));
+        Pizza pizza = service.orderHouseSpecial();
+        pizza.getSize();
+    }
+
+    @Test
+    public void whenServiceMockedWithNameAndVerboseLogging_thenLogsMethodInvocations() {
+        PizzaService service = mock(PizzaService.class, withSettings().name("pizzaServiceMock")
+            .verboseLogging());
+
+        Pizza pizza = mock(Pizza.class);
+        when(service.orderHouseSpecial()).thenReturn(pizza);
+
+        service.orderHouseSpecial();
+
+        verify(service).orderHouseSpecial();
+    }
+
+    @Test
+    public void whenServiceMockedWithExtraInterfaces_thenConstructorSuccess() {
+        SpecialInterface specialMock = mock(SpecialInterface.class, withSettings().extraInterfaces(Runnable.class));
+        new SimpleService(specialMock);
+    }
+
+    @Test
+    public void whenMockSetupWithConstructor_thenConstructorIsInvoked() {
+        AbstractCoffee coffeeSpy = mock(AbstractCoffee.class, withSettings().useConstructor("expresso")
+            .defaultAnswer(CALLS_REAL_METHODS));
+
+        assertEquals("Coffee name: ", "expresso", coffeeSpy.getName());
+    }
+
+}