<dependency>
    <groupId>org.mockito</groupId>
    <artifactId>mockito-core</artifactId>
    <version>${mockito.version}</version>
    <scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mockito/mockito-inline -->
<dependency>
    <groupId>org.mockito</groupId>
    <artifactId>mockito-inline</artifactId>
    <version>${mockito.version}</version>
    <scope>test</scope>
</dependency>

import static org.junit.jupiter.api.TestInstance.Lifecycle.PER_CLASS;
import static org.mockito.Mockito.*;

 //You can mock concrete classes, not just interfaces
 LinkedList mockedList = mock(LinkedList.class);
 //插樁
 when(mockedList.get(0)).thenReturn("first");
 when(mockedList.get(1)).thenThrow(new RuntimeException());
 //following prints "first"
 System.out.println(mockedList.get(0));
 //following throws runtime exception
 System.out.println(mockedList.get(1));
 //following prints "null" because get(999) was not stubbed
 System.out.println(mockedList.get(999));
 //Although it is possible to verify a stubbed invocation, usually it's just redundant
 //If your code cares what get(0) returns, then something else breaks (often even before verify() gets executed).
 //If your code doesn't care what get(0) returns, then it should not be stubbed.
 verify(mockedList).get(0);

 //Let's import Mockito statically so that the code looks clearer
 import static org.mockito.Mockito.*;
 //mock creation
 List mockedList = mock(List.class);
 //using mock object
 mockedList.add("one");
 mockedList.clear();
 //verification
 verify(mockedList).add("one");
 verify(mockedList).clear();

@Test
void testOnEntry2() throws NodeExecuteTimeoutException {
    PDStateMachineNode mock = spy(PDStateMachineNode.class);
    mock.onEntry(any());
    // 默認(rèn)第二個(gè)參數(shù)就是times(1),因此這里可以不寫(xiě)
    verify(mock,times(1)).runAviatorScript(any(),any(),anyString());
}

//stubbing using built-in anyInt() argument matcher
 when(mockedList.get(anyInt())).thenReturn("element");
 //stubbing using custom matcher (let's say isValid() returns your own matcher implementation):
 when(mockedList.contains(argThat(isValid()))).thenReturn(true);
 //following prints "element"
 System.out.println(mockedList.get(999));
 //you can also verify using an argument matcher
 verify(mockedList).get(anyInt());
 //argument matchers can also be written as Java 8 Lambdas
 verify(mockedList).add(argThat(someString -> someString.length() > 5));

//正確   
verify(mock).someMethod(anyInt(), anyString(), eq("third argument"));
//錯(cuò)誤
verify(mock).someMethod(anyInt(), anyString(), "third argument");

 //using mock
 mockedList.add("once");
 mockedList.add("twice");
 mockedList.add("twice");
 mockedList.add("three times");
 mockedList.add("three times");
 mockedList.add("three times");
 //following two verifications work exactly the same - times(1) is used by default
 verify(mockedList).add("once");
 verify(mockedList, times(1)).add("once");
 //exact number of invocations verification
 verify(mockedList, times(2)).add("twice");
 verify(mockedList, times(3)).add("three times");
 //verification using never(). never() is an alias to times(0)
 verify(mockedList, never()).add("never happened");
 //verification using atLeast()/atMost()
 verify(mockedList, atMostOnce()).add("once");
 verify(mockedList, atLeastOnce()).add("three times");
 verify(mockedList, atLeast(2)).add("three times");
 verify(mockedList, atMost(5)).add("three times");

@Test
void testDELETE() {
    Assertions.assertTimeout(Duration.ofSeconds(10), () -> {
        mockStatic.when(() -> HttpRequest.delete("test").execute().body()).thenReturn("success");
        String execute = (String) AviatorEvaluator.execute("return DELETE("test");");
        Assertions.assertTrue(execute.contains("success"));
        //在這里
        mockStatic.verify(() -> HttpRequest.delete(anyString()), times(2));
    });
}

@Test
void onExit() throws NodeExecuteTimeoutException {
    StateMachineInterpreter interpreter = new StateMachineInterpreter();
    StateMachineNode spy = spy(new StateMachineNode());
    //啥也不干
    doNothing().when(spy).onExit(any());
}

PDStateMachineNode mock = spy(new PDStateMachineNode());
doReturn(true).when(mock).onCheck(any());
mock.verify(any());
InOrder inOrder = inOrder(mock);
inOrder.verify(mock).onEntry(any());
inOrder.verify(mock).onCheck(any());
inOrder.verify(mock).onMatch(any());
inOrder.verify(mock).onExit(any());
doReturn(false).when(mock).onCheck(any());
mock.verify(any());
InOrder inOrder2 = inOrder(mock);
inOrder2.verify(mock).onEntry(any());
inOrder2.verify(mock).onCheck(any());
inOrder2.verify(mock).onFail(any());
inOrder2.verify(mock).onExit(any());

List list = new LinkedList();
List spy = spy(list);
//Impossible: real method is called so spy.get(0) throws IndexOutOfBoundsException (the list is yet empty)
when(spy.get(0)).thenReturn("foo", "bar", "qix");
//You have to use doReturn() for stubbing:
doReturn("foo", "bar", "qix").when(spy).get(0);

   List list = new LinkedList();
   List spy = spy(list);
   //Impossible: real method is called so spy.get(0) throws IndexOutOfBoundsException (the list is yet empty)
   when(spy.get(0)).thenReturn("foo", "bar", "qix");
   //You have to use doReturn() for stubbing:
   doReturn("foo", "bar", "qix").when(spy).get(0);

doThrow(new RuntimeException()).when(mock).someVoidMethod();
doThrow(RuntimeException.class).when(mock).someVoidMethod();

doAnswer(new Answer() {
    public Object answer(InvocationOnMock invocation) {
        Object[] args = invocation.getArguments();
        Mock mock = invocation.getMock();
        return null;
    }})
    .when(mock).someMethod();

doNothing().
    doThrow(new RuntimeException())
    .when(mock).someVoidMethod();
//does nothing the first time:
mock.someVoidMethod();
//throws RuntimeException the next time:
mock.someVoidMethod();

Foo mock = mock(Foo.class);
doCallRealMethod().when(mock).someVoidMethod();
// this will call the real implementation of Foo.someVoidMethod()
mock.someVoidMethod();

@Test
void step() throws NodeExecuteTimeoutException, NextNodesNotExistException {
    PDStateMachineNode spy = spy(new PDStateMachineNode());
    PDStateMachineNode node = new PDStateMachineNode();
    PDStateMachineNode subSpy = spy(node);
    doReturn(true).when(subSpy).verify(any());
    doReturn(List.of(subSpy)).when(spy).getNextNodes();
    PDStateMachineNode step = spy.step(any(PointData.class));
    Assertions.assertEquals(subSpy, step);
    when(spy.getNextNodes()).thenReturn(new ArrayList<>());
    doReturn(true).when(spy).isTerminalNode();
    Assertions.assertThrows(NextNodesNotExistException.class, () -> spy.step(any(PointData.class)));
    doReturn(new ArrayList<>()).when(spy).getNextNodes();
    doReturn(false).when(spy).isTerminalNode();
    Assertions.assertEquals(spy, spy.step(any(PointData.class)));
}

@BeforeAll
void init() {
    mockStatic = mockStatic(HttpRequest.class, RETURNS_DEEP_STUBS);
}
@Test
void testGET() {
    Assertions.assertTimeout(Duration.ofSeconds(10), () -> {
        mockStatic.when(() -> HttpRequest.get("test").execute().body()).thenReturn("success");
        String execute = (String) AviatorEvaluator.execute("return GET("test");");
        Assertions.assertTrue(execute.contains("success"));
        mockStatic.verify(() -> HttpRequest.get(anyString()), times(2));
    });
}

someMock.when(() -> Files.delete(fileToDelete)).thenAnswer((Answer<Void>) invocation -> null);
// 也可以是下面這個(gè)
// someMock.when(() -> Files.delete(fileToDelete)).thenAnswer(Answers.RETURNS_DEFAULTS);

PDStateMachineNode mock = mock(PDStateMachineNode.class);
mock.onEntry(any());
verify(mock, times(1)).runAviatorScript(any(), any(), anyString());

Wanted but not invoked:
pDStateMachineNode.runAviatorScript(
    <any>,
    <any>,
    <any string>
);
-> at core.state.GenericStateMachineNode.runAviatorScript(GenericStateMachineNode.java:78)

@Test
void testOnEntry2() throws NodeExecuteTimeoutException {
    PDStateMachineNode mock = spy(PDStateMachineNode.class);
    mock.onEntry(any());
    verify(mock, times(1)).runAviatorScript(any(), any(), anyString());
}

@Override
public void onEntry(T event) throws NodeExecuteTimeoutException {
    System.out.println("hello");
    this.runAviatorScript(this.onEntry, event, "onEntry");
}

    @Test
    void testOnEntry2() throws NodeExecuteTimeoutException {
        PDStateMachineNode mock = spy(PDStateMachineNode.class);
        when(mock.onCheck(any())).thenReturn(true);
        mock.onEntry(any());
        verify(mock, times(1)).runAviatorScript(any(), any(), anyString());
    }

@Test
void testOnEntry2() throws NodeExecuteTimeoutException {
    PDStateMachineNode mock = spy(PDStateMachineNode.class);
    doNothing().when(mock).onEntry(any());
    mock.onEntry(any());
    verify(mock, times(1)).runAviatorScript(any(), any(), anyString());
}

 import static org.mockito.BDDMockito.*;
 Seller seller = mock(Seller.class);
 Shop shop = new Shop(seller);
 public void shouldBuyBread() throws Exception {
   //given
   given(seller.askForBread()).willReturn(new Bread());
   //when
   Goods goods = shop.buyBread();
   //then
   assertThat(goods, containBread());
 }

   //given
   willThrow(new RuntimeException("boo")).given(mock).foo();
   //when
   Result result = systemUnderTest.perform();
   //then
   assertEquals(failure, result);

person.ride(bike);
person.ride(bike);
then(person).should(times(2)).ride(bike);
then(person).shouldHaveNoMoreInteractions();
then(police).shouldHaveZeroInteractions();

   InOrder inOrder = inOrder(person);
   person.drive(car);
   person.ride(bike);
   person.ride(bike);
   then(person).should(inOrder).drive(car);
   then(person).should(inOrder, times(2)).ride(bike);

@Test
void shouldNotListRoles() throws Exception {
    given(roleService.findAll()).willReturn(new ArrayList<>());
    ResultActions actions = this.mvc.perform(get("/api/role/getRoles"));
    actions.andExpect(status().isOk()).andReturn().getResponse().setCharacterEncoding("UTF-8");
    actions.andDo(print()).andExpect(jsonPath("$.data.length()").value(Matchers.is(0)));
}
@Test
void shouldCreateRole() throws Exception {
    objectMapper.registerModule(new JavaTimeModule());
    objectMapper.disable(SerializationFeature.WRITE_DATE_KEYS_AS_TIMESTAMPS);
    Role role = new Role(null, "mfine",
                         LocalDateTime.now(), "", 0, null, "admin");
    // 這里 也使用了參數(shù)匹配器
    given(roleService.insertSelective(BDDMockito.any())).willReturn(1);
    ResultActions actions = this.mvc.perform(post("/api/role/createRole").content(objectMapper.writeValueAsString(role))
                                             .accept(MediaType.APPLICATION_JSON).contentType(MediaType.APPLICATION_JSON));
    actions.andExpect(status().isOk()).andReturn().getResponse().setCharacterEncoding("UTF-8");
    actions.andExpect(ResultMatcher.matchAll(result -> {
        Assert.assertTrue(result.getResponse().getContentAsString().contains("success"));
    }));
}