模拟对象在服务调用中变为 null。 它们在测试 class 中作为模拟 object 可用，但是当到达服务 class 时，所有模拟都是 Z37A6259CC0C49DAE299A786

Question

这是我的 class。 在这个 class 中，我完成了 mocking 并在我的服务（SearchServiceImpl）中注入了模拟对象。 但问题是模拟没有被注入，当我调试时，我看到当执行到达服务 class 时，所有模拟对象都会得到 null。 模拟对象在测试类中可用（通过@Mock 注释模拟它们），但是当执行到达@spy 服务（SearchServiceImpl）时，模拟对象为空，因此它会在服务内引发 null 指针异常。

package com.sams.clubops.service.impl;

import com.sams.clubops.bo.InstantSavingsBO;
import com.sams.clubops.config.ElasticSearchProperties;
import com.sams.clubops.service.InstantSavingsService;
import com.sams.clubops.service.InventoryCacheService;
import com.sams.clubops.service.InventoryService;
import com.sams.clubops.utils.SearchClient;
import com.sams.clubops.vo.CustomerBasketOfferVO;
import com.sams.clubops.vo.CustomerBasketVO;
import com.sams.clubops.vo.ItemBaseVO;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;
import lombok.extern.slf4j.Slf4j;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.*;
import org.mockito.junit.jupiter.MockitoExtension;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;

/** @Author: vn0x42k @Date: 2/16/2019 10:55 AM */
@Slf4j
public class SearchApplicationTest {

  @Spy @InjectMocks private SearchServiceImpl searchServiceImpl;
  @Mock private InstantSavingsService instantSavingsService;
  @Mock private SearchClient searchClient;
  @Mock private ElasticSearchProperties elasticSearchProperties;
  @Mock private InventoryCacheService inventoryCacheService;
  @Mock private InventoryService inventoryService;

  @BeforeEach
  public void setup() throws Exception {
    MockitoAnnotations.openMocks(this);
    List<CustomerBasketOfferVO> customerBasketOfferVOList = new ArrayList<>();
    CustomerBasketOfferVO customerBasketOfferVO1 =
        CustomerBasketOfferVO.builder()
            .id(70001)
            .description("$80 OFF")
            .type("ITEM")
            .gs1Code("0040980059971")
            .featuredText("INST SV")
            .serialNumber(null)
            .settlementId(null)
            .gtin("980059971")
            .discount("2000")
            .productId("441016")
            .quantity("4")
            .build();

    CustomerBasketOfferVO customerBasketOfferVO2 =
        CustomerBasketOfferVO.builder()
            .id(null)
            .description("FREE INSTAL")
            .type("null")
            .gs1Code("null")
            .featuredText("null")
            .serialNumber(null)
            .settlementId(null)
            .gtin("980059971")
            .discount("1500")
            .productId("5")
            .quantity("4")
            .build();
    customerBasketOfferVOList.add(customerBasketOfferVO1);
    customerBasketOfferVOList.add(customerBasketOfferVO2);
    CustomerBasketVO customerBasketVO =
        CustomerBasketVO.builder()
            .offerSize(2)
            .basketID(2051)
            .offers(customerBasketOfferVOList)
            .build();
    Mockito.when(
            instantSavingsService.getInstantSavingsFromApiV2(
                Mockito.any(), Mockito.any(), Mockito.any(), Mockito.any()))
        .thenReturn(customerBasketVO);
    List<InstantSavingsBO> instantSavingsBOList = new ArrayList<>();
    InstantSavingsBO instantSavingsBO =
        InstantSavingsBO.builder().itemNumber(980059971L).description("$80 OFF Pipi").build();
    instantSavingsBOList.add(instantSavingsBO);
    Mockito.when(instantSavingsService.getInstantSavingsDescFromDB(Mockito.anyList()))
        .thenReturn(instantSavingsBOList);
  }

  @Test
  public void getInstantSavingsTest1() throws Exception {
    List<ItemBaseVO> list = new ArrayList<>();
    ItemBaseVO itemBaseVO =
        ItemBaseVO.builder().itemId(441016).priceWithoutTax(new BigDecimal(13699)).build();
    list.add(itemBaseVO);
    List<ItemBaseVO> result =
        searchServiceImpl.getInstantSavings(
            list, "10192100917188856", 4969, "2019-12-23 09:31:00.000Z");
    assertEquals("$80 OFF Pipi", result.get(0).getInstantSavings().get("summaryDesc"));
  }

  @Test
  public void getInstantSavingsTest2() throws Exception {
    List<ItemBaseVO> list = new ArrayList<>();
    ItemBaseVO itemBaseVO = ItemBaseVO.builder().itemId(441016).build();
    list.add(itemBaseVO);
    assertEquals(
        list, searchServiceImpl.getInstantSavings(list, null, 4969, "2019-12-23 09:31:00.000Z"));
  }

  @Test
  public void getInstantSavingsTest3() throws Exception {
    List<ItemBaseVO> list = new ArrayList<>();
    ItemBaseVO itemBaseVO = ItemBaseVO.builder().itemId(441016).build();
    list.add(itemBaseVO);
    assertEquals(
        list, searchServiceImpl.getInstantSavings(list, null, 4969, "2019-12-23 09:31:00.000Z"));
  }

  @Test
  public void getInstantSavingsTest4() throws Exception {
    List<ItemBaseVO> list = new ArrayList<>();
    ItemBaseVO itemBaseVO = ItemBaseVO.builder().itemId(441016).build();
    list.add(itemBaseVO);
    assertEquals(
        list, searchServiceImpl.getInstantSavings(list, null, 4969, "2019-12-23 09:31:00.000Z"));
  }

  @Test
  public void getInstantSavingsTest5() throws Exception {
    List<ItemBaseVO> list = new ArrayList<>();
    ItemBaseVO itemBaseVO = ItemBaseVO.builder().itemId(441016).build();
    list.add(itemBaseVO);
    // mock getInstantSavingsFromApi
    List<CustomerBasketOfferVO> customerBasketOfferVOList = new ArrayList<>();
    CustomerBasketOfferVO customerBasketOfferVO2 =
        CustomerBasketOfferVO.builder()
            .id(null)
            .description("FREE INSTAL")
            .type("null")
            .gs1Code("null")
            .featuredText("null")
            .serialNumber(null)
            .settlementId(null)
            .discount("1500")
            .productId("5")
            .quantity("4")
            .build();
    customerBasketOfferVOList.add(customerBasketOfferVO2);
    CustomerBasketVO customerBasketVO =
        CustomerBasketVO.builder()
            .offerSize(2)
            .basketID(2051)
            .offers(customerBasketOfferVOList)
            .build();
    Mockito.when(
            instantSavingsService.getInstantSavingsFromApiV2(
                Mockito.any(), Mockito.any(), Mockito.any(), Mockito.any()))
        .thenReturn(customerBasketVO);
    List<ItemBaseVO> result =
        searchServiceImpl.getInstantSavings(
            list, "10192100917188856", 4969, "2019-12-23 09:31:00.000Z");
    assertNull(result.get(0).getInstantSavings());
  }

  @Test
  public void getInstantSavingsTest6() throws Exception {
    List<ItemBaseVO> list = new ArrayList<>();
    ItemBaseVO itemBaseVO = ItemBaseVO.builder().itemId(441016).build();
    list.add(itemBaseVO);
    Mockito.when(instantSavingsService.getInstantSavingsDescFromDB(Mockito.anyList()))
        .thenReturn(null);
    List<ItemBaseVO> result =
        searchServiceImpl.getInstantSavings(
            list, "10192100917188856", 4969, "2019-12-23 09:31:00.000Z");
    assertNull(result.get(0).getInstantSavings());
  }
}

Answer 1

是什么让您认为这是调用原始 function？ 哪个测试失败了？ 他们全部？

您是否尝试调试您的代码以查看 SearchServiceImpl 的字段是否被模拟？

我不确定，但 Mockito 可能不支持在同一字段上使用@Spy和@InjectMocks 。 请参阅此帖子： 是否不鼓励在同一字段上使用 @Spy 和 @InjectMocks？

我还建议您使用@ExtendWith(MockitoExtension.class)来处理您的模拟，而不是手动调用MockitoAnnotations.openMocks(this)