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Testing CORS with Cypress: intercepting requests and validating headers
Use cy.intercept to observe cross-origin calls from your SPA and assert headers without leaving the browser.
1 min read
testingcypresscors
Stable fixtures
Stub upstream APIs when testing CORS policy in isolation; focus assertions on Access-Control-* headers.
Rotate test API keys per run to avoid collisions with parallel CI jobs.
Developer experience
Expose a debug route in non-prod that echoes received Origin for faster troubleshooting.
Document Cypress + CORS recipes in your repo wiki for onboarding.