What is the best way to refresh the snapshots in my React/TypeScript project?

I am working on a React/TypeScript project that utilizes the Jest testing framework. Occasionally, after making changes to my code, Jest will compare it to the snapshots and generate an alert requesting me to update them. However, there are instances where I do not receive this notification:

Would you like to update your snapshots?

https://i.stack.imgur.com/XHPAt.png

If I do not see this prompt, I have to manually update each line, which is time-consuming and prone to errors.


Is there a way to automatically update my snapshots?

typescriptunit-testingnpmvisual-studio-codejestjs

Answer №1

I found that the initial command mentioned didn't do the trick for me, however I had success with this alternative:

npm test -- -u

Answer №2

Execute Jest via command line

Approach #1:

If you encounter issues with snapshot tests, launch your terminal and type the following command

npm test <file_name>

This will specifically run tests for that particular file. Once completed, you can choose from various options. Press

u

Afterward, your tests should pass accordingly according to npm. Nevertheless, Jest might not acknowledge this immediately, resulting in a

// Snapshot has changed

error next to your tests. You can either wait for Jest to finalize the test execution or click on the

Debug

link at the beginning of the test to resolve the error.


Approach #2:

In some cases, the initial solution may not be effective. Another command to consider running from the terminal to update snapshots is

npm run test:ci -- -u

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