7 replies

How to mock better-auth with MSW?

I tried to use MSW to mock the (GitHub) OAuth flow. However, I have been unsuccessful in getting the session on the server.

Here is a minimal reproduction:
https://codesandbox.io/p/devbox/better-auth-with-msw-5dy86g

Please test on a new browser tab:
https://5dy86g-3000.csb.app/

Steps to reproduce:

1. Run the server

MOCK_SERVER=true pnpm dev

MOCK_SERVER=true pnpm dev

(if the server is running at first, please restart it with this command)
2. Go to https://5dy86g-3000.csb.app/
3. Click "Sign In"
4. Copy the

state

state

in the URL. E.g.,

&state=XXX

&state=XXX

, copy the XXX
5. Go to https://5dy86g-3000.csb.app/api/auth/callback/github?code=mock_github_code&state=XXX directly, paste your state at the end
6. OAuth flow is done.

Notes:
- If you're getting an

invalid_code

invalid_code

error, please try to fork the codesandbox and test with your own csb terminal.
-

instrumentation.ts

instrumentation.ts

only runs when

pnpm dev

pnpm dev

, if any changes are made in

instrumentation.ts

instrumentation.ts

, please restart the next-server.

Better Auth•6mo ago•