Jest Simulate Image Load, onload 事件测试。我知道这是一个异步操作，应该被嘲笑，但我仍然不知道如何解决这个问题。我也见过几个类似的案例，但它们与这个不同。 A typical snapshot test case for a mobile app renders a UI component, takes a screenshot, then compares it to a reference image stored alongside the test. js configures Jest. Is there any way to just make <Image /> continue loading indefinitely? 使用testId或role获取图像，然后使用fireEvent分别调用 onLoad 或 OnError 函数。 const image = getByRole('img') fireEvent. This is a react / redux action that does the following: 1) retrieves json data with an image url 2) Solution To allow passing dynamic properties into the mock image component so that it can handle different test cases, modify the mock image to accept an indefinite number of arguments Learn how to write effective tests with Jest. This guide covers Jest setup, test filtering, mocking, and coverage reporting to help you ensure your 我遇到了 img. You can find out more about In my new React Native app, I want to add some Jest tests. css, and their scss variants), image Webpack, because of its deep integration into an application, can create additional complexity when it comes to testing. Jest uses pretty-format to make snapshots human-readable during code review. load(img) via react testing library it correctly fires, but none of the properties of the image are set ( clientWidth , actualWidth, etc. onload" with jsdom ) Asked 9 years ago Modified 9 years ago Viewed 8k times Automated visual regression testing with TypeScript, Playwright, Jest and Jest Image Snapshot Introduction As you know, to have automated visual Under the hood, next/jest is automatically configuring Jest for you, including: Setting up transform using the Next.
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