private Set<Object> getOriTargetSet(){
    Set<Object> oriTargetSet = new HashSet<>();
    Set<Field> mockFields = new HashSet<Field>();
    new InjectAnnotationScanner(ownerClazz, Spy.class).addTo(mockFields);
    new InjectAnnotationScanner(ownerClazz, Mock.class).addTo(mockFields);
    if(mockFields.size() == 0){
        return new HashSet<>();
    }
    if(!isSpringContainer()){
        return new HashSet<>();
    }
    for(Field field : mockFields){
        Object oriTarget = getBean(field);
        if(oriTarget == null){
            continue;
        }
        oriTargetSet.add(oriTarget);
    }
    return oriTargetSet;
}
 

private Set<Object> instanceMocksIn(Object instance, Class<?> clazz) {
    Set<Object> instanceMocks = new HashSet<Object>();
    Field[] declaredFields = clazz.getDeclaredFields();
    for (Field declaredField : declaredFields) {
        if (declaredField.isAnnotationPresent(Mock.class) || declaredField.isAnnotationPresent(Spy.class)) {
            declaredField.setAccessible(true);
            try {
                Object fieldValue = declaredField.get(instance);
                if (fieldValue != null) {
                    instanceMocks.add(fieldValue);
                }
            } catch (IllegalAccessException e) {
                throw new MockitoException("Could not access field " + declaredField.getName());
            }
        }
    }
    return instanceMocks;
}
 

private Set<Object> instanceMocksIn(Object instance, Class<?> clazz) {
    Set<Object> instanceMocks = new HashSet<Object>();
    Field[] declaredFields = clazz.getDeclaredFields();
    for (Field declaredField : declaredFields) {
        if (declaredField.isAnnotationPresent(Mock.class) || declaredField.isAnnotationPresent(Spy.class)) {
            declaredField.setAccessible(true);
            try {
                Object fieldValue = declaredField.get(instance);
                if (fieldValue != null) {
                    instanceMocks.add(fieldValue);
                }
            } catch (IllegalAccessException e) {
                throw new MockitoException("Could not access field " + declaredField.getName());
            }
        }
    }
    return instanceMocks;
}
 

@SuppressWarnings({"deprecation", "unchecked"})
private Collection<Object> instanceMocksOf(Object instance) {
    return Fields.allDeclaredFieldsOf(instance)
                                        .filter(annotatedBy(Mock.class,
                                                            Spy.class,
                                                            MockitoAnnotations.Mock.class))
                                        .notNull()
                                        .assignedValues();
}
 

@Test
  public void shouldFailIfTypeIsAnInterface() throws Exception {
class FailingSpy {
	@Spy private List spyTypeIsInterface;
}

      try {
          MockitoAnnotations.initMocks(new FailingSpy());
          fail();
      } catch (Exception e) {
          Assertions.assertThat(e.getMessage()).contains("an interface");
      }
  }
 

@Test
  public void shouldReportWhenNoArgConstructor() throws Exception {
class FailingSpy {
       @Spy
          NoValidConstructor noValidConstructor;
}

      try {
          MockitoAnnotations.initMocks(new FailingSpy());
          fail();
      } catch (Exception e) {
          Assertions.assertThat(e.getMessage()).contains("default constructor");
      }
  }
 

@Test
  public void shouldReportWhenConstructorThrows() throws Exception {
class FailingSpy {
       @Spy
          ThrowingConstructor throwingConstructor;
}

      try {
          MockitoAnnotations.initMocks(new FailingSpy());
          fail();
      } catch (Exception e) {
          Assertions.assertThat(e.getMessage()).contains("raised an exception");
      }
  }
 

@Test
  public void shouldFailIfTypeIsAbstract() throws Exception {
class FailingSpy {
	@Spy private AbstractList spyTypeIsAbstract;
}

      try {
          MockitoAnnotations.initMocks(new FailingSpy());
          fail();
      } catch (Exception e) {
          Assertions.assertThat(e.getMessage()).contains("abstract class");
      }
  }
 

@Test
  public void shouldFailIfTypeIsInnerClass() throws Exception {
class FailingSpy {
	@Spy private TheInnerClass spyTypeIsInner;
          class TheInnerClass { }
}

      try {
          MockitoAnnotations.initMocks(new FailingSpy());
          fail();
      } catch (MockitoException e) {
          Assertions.assertThat(e.getMessage()).contains("inner class");
      }
  }
 

@SuppressWarnings({"deprecation", "unchecked"})
private Collection<Object> instanceMocksOf(Object instance) {
    return Fields.allDeclaredFieldsOf(instance)
                                        .filter(annotatedBy(Mock.class,
                                                            Spy.class,
                                                            MockitoAnnotations.Mock.class))
                                        .notNull()
                                        .assignedValues();
}
 

@Override
protected boolean processInjection(Field field, Object fieldOwner, Set<Object> mockCandidates) {
    FieldReader fieldReader = new FieldReader(fieldOwner, field);

    // TODO refoctor : code duplicated in SpyAnnotationEngine
    if(!fieldReader.isNull() && field.isAnnotationPresent(Spy.class)) {
        try {
            Object instance = fieldReader.read();
            if (new MockUtil().isMock(instance)) {
                // A. instance has been spied earlier
                // B. protect against multiple use of MockitoAnnotations.initMocks()
                Mockito.reset(instance);
            } else {
                new FieldSetter(fieldOwner, field).set(
                    Mockito.mock(instance.getClass(), withSettings()
                        .spiedInstance(instance)
                        .defaultAnswer(Mockito.CALLS_REAL_METHODS)
                        .name(field.getName()))
                );
            }
        } catch (Exception e) {
            throw new MockitoException("Problems initiating spied field " + field.getName(), e);
        }
    }

    return false;
}
 

@Test
  public void shouldFailIfTypeIsAnInterface() throws Exception {
class FailingSpy {
	@Spy private List spyTypeIsInterface;
}

      try {
          MockitoAnnotations.initMocks(new FailingSpy());
          fail();
      } catch (Exception e) {
          Assertions.assertThat(e.getMessage()).contains("an interface");
      }
  }
 

@Test
  public void shouldReportWhenNoArgConstructor() throws Exception {
class FailingSpy {
       @Spy
          NoValidConstructor noValidConstructor;
}

      try {
          MockitoAnnotations.initMocks(new FailingSpy());
          fail();
      } catch (Exception e) {
          Assertions.assertThat(e.getMessage()).contains("default constructor");
      }
  }
 

@Test
  public void shouldReportWhenConstructorThrows() throws Exception {
class FailingSpy {
       @Spy
          ThrowingConstructor throwingConstructor;
}

      try {
          MockitoAnnotations.initMocks(new FailingSpy());
          fail();
      } catch (Exception e) {
          Assertions.assertThat(e.getMessage()).contains("raised an exception");
      }
  }
 

@Test
  public void shouldFailIfTypeIsAbstract() throws Exception {
class FailingSpy {
	@Spy private AbstractList spyTypeIsAbstract;
}

      try {
          MockitoAnnotations.initMocks(new FailingSpy());
          fail();
      } catch (Exception e) {
          Assertions.assertThat(e.getMessage()).contains("abstract class");
      }
  }
 

@Test
  public void shouldFailIfTypeIsInnerClass() throws Exception {
class FailingSpy {
	@Spy private TheInnerClass spyTypeIsInner;
          class TheInnerClass { }
}

      try {
          MockitoAnnotations.initMocks(new FailingSpy());
          fail();
      } catch (MockitoException e) {
          Assertions.assertThat(e.getMessage()).contains("inner class");
      }
  }
 

@Test(expected=MockitoException.class)
public void shouldNotAllowMockAndSpy() throws Exception {
    MockitoAnnotations.initMocks(new Object() {
        @Mock @Spy List mock;
    });
}
 

@Test(expected=MockitoException.class)
public void shouldNotAllowSpyAndInjectMock() throws Exception {
    MockitoAnnotations.initMocks(new Object() {
        @InjectMocks @Spy List mock;
    });
}
 

@Test(expected=MockitoException.class)
public void shouldNotAllowCaptorAndSpy() throws Exception {
    MockitoAnnotations.initMocks(new Object() {
        @Spy @Captor ArgumentCaptor captor;
    });
}
 

private boolean isAnnotatedByMockOrSpy(Field field) {
    return null != field.getAnnotation(Spy.class)
            || null != field.getAnnotation(Mock.class)
            || null != field.getAnnotation(MockitoAnnotations.Mock.class);
}
 

@Test(expected=MockitoException.class)
public void shouldNotAllowMockAndSpy() throws Exception {
    MockitoAnnotations.initMocks(new Object() {
        @Mock @Spy List mock;
    });
}
 

@Test(expected=MockitoException.class)
public void shouldNotAllowSpyAndInjectMock() throws Exception {
    MockitoAnnotations.initMocks(new Object() {
        @InjectMocks @Spy List mock;
    });
}
 

@Test(expected=MockitoException.class)
public void shouldNotAllowCaptorAndSpy() throws Exception {
    MockitoAnnotations.initMocks(new Object() {
        @Spy @Captor ArgumentCaptor captor;
    });
}