java - 无法正确应用其余 Controller junit测试

我正在尝试为我的其余控制器应用junit测试。
我尝试应用junit 4，但出现404错误而不是200。
看起来有些东西尚未初始化，但找不到。

这是我尝试申请的教程。
https://www.youtube.com/watch?v=8S8o46avgAw

我也尝试过使用junit 5进行一些不同的教程，但是结果是相同的。

在这里您可以找到整个项目。
https://github.com/WojciechWeg/tiny-bank/tree/tests

在发布这篇文章之前，我已经应用了以下内容：

    @Before
    public void setUp() throws Exception {
        mockMvc = MockMvcBuilders.standaloneSetup(customerController)
                .build();

        customer = new Customer("Jan","Kowalski",new Date(),"Marszalkowska",new ArrayList<>());

        customerService.createNewCustomer(customer);

        System.out.println("Customers from service: "+ customerService.getAllCustomers());
    }

但结果是：

Customers from service: []

因此它什么也不返回。以上代码段不在回购链接中。

休息控制器类：

package com.tinybank.tinybankapi.controllers;

import com.tinybank.tinybankapi.model.Account;
import com.tinybank.tinybankapi.model.Customer;
import com.tinybank.tinybankapi.model.CustomerResource;
import com.tinybank.tinybankapi.services.CustomerService;

import org.springframework.hateoas.Link;
import org.springframework.hateoas.Resources;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.mvc.method.annotation.MvcUriComponentsBuilder;
import org.springframework.web.servlet.support.ServletUriComponentsBuilder;

import javax.validation.Valid;
import java.net.URI;
import java.util.List;

@RestController
@RequestMapping(CustomerController.BASE_URL)
public class CustomerController {

    public static final String BASE_URL = "api/customers";

    private final CustomerService customerService;

    public CustomerController(CustomerService customerService) {
        this.customerService = customerService;
    }

    @GetMapping
    @ResponseStatus(HttpStatus.OK)
    public ResponseEntity<Resources<List<Customer>>> getListOfCustomers() {
        Resources<List<Customer>> resources = new Resources(customerService.getAllCustomers());
        String uri = ServletUriComponentsBuilder.fromCurrentRequest().build().toUriString();
        resources.add(new Link(uri,"self"));
        return ResponseEntity.ok(resources);
    }

    @GetMapping({"/{id}"})
    @ResponseStatus(HttpStatus.OK)
    public Customer getCustomer(@PathVariable Long id) {
        return customerService.getCustomerById(id);
    }

    @DeleteMapping({"/{id}"})
    @ResponseStatus(HttpStatus.OK)
    public void deleteCustomer(@PathVariable Long id) {
        customerService.deleteCustomerById(id);
    }

    @PostMapping
    @ResponseStatus(HttpStatus.CREATED)
    public ResponseEntity<CustomerResource> createNewCustomer(@RequestBody @Valid Customer Customer) {

        Customer customer = customerService.createNewCustomer(Customer);
        URI uri = MvcUriComponentsBuilder.fromController(getClass())
                .path("/{id}")
                .buildAndExpand(customer.getId())
                .toUri();

        return ResponseEntity.created(uri).body(new CustomerResource(customer));
    }

    @PutMapping({"/{id}/open_account"})
    @ResponseStatus(HttpStatus.OK)
    public void openAccount(@PathVariable Long id, @RequestBody Account account) {
        customerService.openAccount(id, account);
    }

}

测试类别：

package com.tinybank.tinybankapi.controllers;

import com.tinybank.tinybankapi.model.Customer;
import com.tinybank.tinybankapi.services.CustomerService;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.setup.MockMvcBuilders;

import java.util.ArrayList;
import java.util.Date;

import static org.junit.Assert.*;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.when;
import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;

@RunWith(SpringJUnit4ClassRunner.class)
public class CustomerControllerTest {

    private MockMvc mockMvc;

    @Mock
    private CustomerService customerService;

    @InjectMocks
    private CustomerController customerController;

    Customer customer;

    @Before
    public void setUp() throws Exception {
        mockMvc = MockMvcBuilders.standaloneSetup(customerController)
                .build();

        customer = new Customer("Jan","Kowalski",new Date(),"Marszalkowska",new ArrayList<>());

        customerService.createNewCustomer(customer);

        System.out.println("Customers from service: "+ customerService.getAllCustomers());

    }

    @Test
    public void getCustomer() throws  Exception {
        when(customerService.getCustomerById(any())).thenReturn(customer);

        mockMvc.perform(get("api/customers/1"))
                .andExpect(status().isOk());

    }

}

这是堆栈跟踪的样子：

java.lang.AssertionError: Status
Expected :200
Actual   :404
<Click to see difference>


    at org.springframework.test.util.AssertionErrors.fail(AssertionErrors.java:55)
    at org.springframework.test.util.AssertionErrors.assertEquals(AssertionErrors.java:82)
    at org.springframework.test.web.servlet.result.StatusResultMatchers.lambda$matcher$9(StatusResultMatchers.java:619)
    at org.springframework.test.web.servlet.MockMvc$1.andExpect(MockMvc.java:195)
    at com.tinybank.tinybankapi.controllers.CustomerControllerTest.getCustomer(CustomerControllerTest.java:53)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
    at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
    at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
    at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

最佳答案

您是否尝试了以下方法而不注入模拟？

MockMvcBuilders.standaloneSetup(new CustomerController())
            .build();

编辑：

我已经在本地运行了您的代码。
做这个：

mockMvc = MockMvcBuilders.standaloneSetup(new CustomerController(customerService))
            .build();

并在URL的开头添加斜杠

mockMvc.perform(get("/api/customers/1"))
            .andExpect(status().isOk());