{"id":322185,"date":"2021-02-05T13:02:47","date_gmt":"2021-02-05T05:02:47","guid":{"rendered":"http:\/\/4563.org\/?p=322185"},"modified":"2021-02-05T13:02:47","modified_gmt":"2021-02-05T05:02:47","slug":"jest-%e4%b8%ad%e5%a6%82%e4%bd%95-mock-%e7%b1%bb%e5%85%b6%e4%b8%ad%e7%9a%84%e9%83%a8%e5%88%86%e5%87%bd%e6%95%b0%ef%bc%9f-2","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=322185","title":{"rendered":"jest \u4e2d\u5982\u4f55 mock \u7c7b\u5176\u4e2d\u7684\u90e8\u5206\u51fd\u6570\uff1f`"},"content":{"rendered":"
\n
\n
\n

jest \u4e2d\u5982\u4f55 mock \u7c7b\u5176\u4e2d\u7684\u90e8\u5206\u51fd\u6570\uff1f` <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : Flands <\/span> <\/i> 6<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n
import { Recorder, Pubsub } from \"trident\"; const pubsub = new Pubsub();  export class SmartRecorder extends Recorder {   constructor(props) {     super(props);   }   start() {     pubsub.subscribe('androidData', androidDataHandler);     return super.start();   } } <\/code><\/pre>\n
\u4f7f\u7528 mockImplementation<\/code> \u65b9\u5f0f\uff0c\u63d0\u793a \u7c7b\u578b\u201ctypeof Recorder\u201d\u4e0a\u4e0d\u5b58\u5728\u5c5e\u6027\u201cmockImplementation\u201d<\/code> \u7528 as<\/code>\u8f6c\u6362\u540e\u65e0\u6548\u3002 \u4f7f\u7528 jest.requireActual<\/code>\uff0c\u76f4\u63a5\u6ca1\u6cd5\u8fd0\u884c\u3002<\/p>\n
\u8bd5\u4e86\u4e24\u5929\u641c\u4e86\u5f88\u591a\u65b9\u6cd5\u90fd\u4e0d\u884c\uff0c\u8bf7\u95ee\u4e0b\u5927\u4f6c\u4eec\u600e\u4e48\u7f16\u5199\u554a\uff1f<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (3<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : theohateonion <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5efa\u8bae\u8d34\u4e0b\u6d4b\u8bd5\u4ee3\u7801\u5148                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Flands <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 test
    “`ts
    const mockStart = jest.fn();
    const mockInit = jest.fn();
    const mockPublish = jest.fn();
    const mockSubscribe = jest.fn();<\/p>\n
    \/\/ \u7b2c\u4e00\u79cd
    import { Pubsub, Recorder } from “trident”;<\/p>\n
    jest.mock(“trident”, () => {
     return {
     Pubsub: () => {
     return class {
     publish() {
     return mockPublish;
     }
     subscribe() {
     return mockSubscribe;
     }
     };
     }
     };
    });<\/p>\n
    \/\/ \u7b2c\u4e8c\u79cd
    import * as trident from “@cloud\/trident-js-sdk\/src”;<\/p>\n
    const mockPubsub = jest.spyOn(trident, “Pubsub”);
    (mockPubsub as jest.Mock).mockImplementation(() => {
     return {
     publish: mockPublish,
     subscribe: mockSubscribe
     };
    });<\/p>\n
    const mockRecorder = jest.spyOn(trident, “Recorder”);
    (mockRecorder as jest.Mock).mockImplementation(() => {
     const original = jest.requireActual(‘@cloud\/trident-js-sdk\/src’);
     return {
     …original,
     start: mockStart,
     };
    });<\/p>\n
    “`<\/p>\n
    \u4e3b\u8981\u8fd8\u662f `mockImplementation` \u548c `requireActual`\u5404\u79cd\u7ec4\u5408\u8d77\u6765\uff0c\u867d\u7136\u770b\u7740\u633a\u79bb\u8c31\u4e5f\u6ca1\u6cd5\u8fd0\u884c\uff0c\u4f46\u5c1d\u8bd5\u4e86\u5f88\u591a\u5199\u6cd5\u90fd\u4e0d\u884c\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : Flands <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e0d\u8981\u5728\u610f `@cloud\/trident-js-sdk\/src` \u8fd9\u4e2a\uff0c\u539f\u672c\u6253\u7b97\u8131\u654f\u7684\uff0c\u7ed3\u679c\u6ca1\u8131\u5168\u3002\u5b9e\u9645\u4e0a\u90fd\u662f `trident`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    jest \u4e2d\u5982\u4f55 mock \u7c7b\u5176\u4e2d…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/322185"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=322185"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/322185\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=322185"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=322185"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=322185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}