小编Cha*_*les的帖子

有时，业力会由于无法解释的原因返回一个难以调试的错误：

An error was thrown in afterAll
TypeError: You provided 'undefined' where a stream was expected. You can provide an Observable, Promise, Array, or Iterable.
    at <Jasmine>
    at subscribeTo (http://localhost:9876/_karma_webpack_/node_modules/rxjs/_esm5/internal/util/subscribeTo.js:28:1)
    at subscribeToResult (http://localhost:9876/_karma_webpack_/node_modules/rxjs/_esm5/internal/util/subscribeToResult.js:15:23)
    at MergeMapSubscriber._innerSub (http://localhost:9876/_karma_webpack_/node_modules/rxjs/_esm5/internal/operators/mergeMap.js:74:50)
    at MergeMapSubscriber._tryNext (http://localhost:9876/_karma_webpack_/node_modules/rxjs/_esm5/internal/operators/mergeMap.js:68:1)
    at MergeMapSubscriber._next (http://localhost:9876/_karma_webpack_/node_modules/rxjs/_esm5/internal/operators/mergeMap.js:51:1)
    at MergeMapSubscriber.Subscriber.next (http://localhost:9876/_karma_webpack_/node_modules/rxjs/_esm5/internal/Subscriber.js:53:1)
    at FilterSubscriber._next (http://localhost:9876/_karma_webpack_/node_modules/rxjs/_esm5/internal/operators/filter.js:38:1)
    at FilterSubscriber.Subscriber.next (http://localhost:9876/_karma_webpack_/node_modules/rxjs/_esm5/internal/Subscriber.js:53:1)
    at SafeSubscriber.__tryOrUnsub (http://localhost:9876/_karma_webpack_/node_modules/rxjs/internal/Subscriber.js:205:1)
    at SafeSubscriber.next (http://localhost:9876/_karma_webpack_/node_modules/rxjs/internal/Subscriber.js:143:1)

你们中有人知道如何跟踪它所关注的内容吗？

使用：

Angular 9
    "jasmine-core": "^3.5.0",
    "jasmine-marbles": "^0.6.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "^4.4.1",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage-istanbul-reporter": "~2.1.1",
    "karma-jasmine": "~3.1.1",
    "karma-jasmine-html-reporter": "^1.5.2",
    "karma-scss-preprocessor": "^4.0.0",

我有一个问题，我想通过测试方法来使用GET方法和POST发送请求。我使用了参数化，但我得到信息 java.lang.Exception: Method simpleMessage should have no参量

  @Test
    @ParameterizedTest
    @ValueSource(strings = {"true", "false"})
    public void simpleMessage (boolean isPost) {
        verifyIdOdpEqual(isPost,1243, "message");
    }