模擬對象在服務調用中變為 null。 它們在測試 class 中作為模擬 object 可用，但是當到達服務 class 時，所有模擬都是 Z37A6259CC0C49DAE299A786

Question

這是我的 class。 在這個 class 中，我完成了 mocking 並在我的服務（SearchServiceImpl）中注入了模擬對象。 但問題是模擬沒有被注入，當我調試時，我看到當執行到達服務 class 時，所有模擬對象都會得到 null。 模擬對象在測試類中可用（通過@Mock 注釋模擬它們），但是當執行到達@spy 服務（SearchServiceImpl）時，模擬對象為空，因此它會在服務內引發 null 指針異常。

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

是什么讓您認為這是調用原始 function？ 哪個測試失敗了？ 他們全部？

您是否嘗試調試您的代碼以查看 SearchServiceImpl 的字段是否被模擬？

我不確定，但 Mockito 可能不支持在同一字段上使用@Spy和@InjectMocks 。 請參閱此帖子： 是否不鼓勵在同一字段上使用 @Spy 和 @InjectMocks？

我還建議您使用@ExtendWith(MockitoExtension.class)來處理您的模擬，而不是手動調用MockitoAnnotations.openMocks(this)