使用反应测试库和storyshots？

Question

Is it possible to use react-testing-library with the storybook storyshots addon? I'd like to generate some tests for react components which do not use enzyme.

Answer 1

Probably a bit late for you, but just been looking at this exact problem. This is the config I came up with which seems to work for me.

import initStoryshots from "@storybook/addon-storyshots";
import path from "path";
import { render } from "react-testing-library";


const reactTestingLibrarySerializer = {
  print: (val, serialize, indent) => serialize(val.container.firstChild),
  test: (val) => val && val.hasOwnProperty("container")
};

initStoryshots({
  configPath: path.join(__dirname, "..", "config", "storybook"),
  framework: "react",
  integrityOptions: { cwd: path.join(__dirname, "stories") },
  renderer: render,
  snapshotSerializers: [reactTestingLibrarySerializer],
  storyKindRegex: /^((?!.*?DontTest).)*$/
});

The secret is to pass in a custom Jest serializer for the snapshotSerializers option that gets the container from the result of the render function and passes its firstChild to be serialized.

If you need to, you can modify the content of the container before serializing, to remove unstable attributes or entire elements using the DOM api.