Advertisements I have a monorepo with multiple apps (Angular and NestJS) and they share some things like interfaces, enums, etc. The apps work, and the Jasmine tests with the Angular apps work, but my Jest tests in the NestJS app are failing to import anything from the shared monorepo folder. Here is my folder structure:… Read More How to define custom TS paths for Jest?

Advertisements I have a function getFruit() that returns two possible types, Banana | Apple. I have a jest unit test that includes a test for a property that exists on one of the types, but not the other. In this case, Banana has the property peel but Apple does not. test(`gets a banana`, () =>… Read More How can I test a property on an object that may be of two different types using Jest and TypeScript?

Advertisements I’m trying to add unit testing to an application written with Typescript and React. I have a very basic component just for the sake of simplicity. import React from "react"; import ReactDOM from "react-dom"; type TypeProps = { } type TypeState = { } class App extends React.Component<TypeProps, TypeState> { constructor(props:TypeProps) { super(props); this.state… Read More Testing a Typescript React Component Giving Error on getByText