message: test: use correct test helper import path
diff: @@ -2,7 +2,7 @@ import { expect } from 'chai';
  import { from, throwError, of, Observable } from 'rxjs';
  import { concatAll, take, mergeMap } from 'rxjs/operators';
  import { TestScheduler } from 'rxjs/testing';
  -import { observableMatcher } from 'spec/helpers/observableMatcher';
  +import { observableMatcher } from '../helpers/observableMatcher';
  declare function asDiagram(arg: string): Function;
  declare const type: Function;
  