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Learn how to use cy.intercept() in Cypress to eliminate flaky tests by stubbing network responses and simulating edge cases like 500 errors and network latency.
Fixed cy.wait(ms) delays are the top cause of flaky Cypress suites. Learn how cy.intercept() with aliased routes fixes timing, enables deterministic stubbing, and where its limits are.
Background In Cypress, cy.intercept is commonly used to stub or monitor network requests during tests. The official documentation states that intercepts are automatically cleared after each test case unless explicitly cleared earlier. However, many developers wish for intercepts to persist across multiple tests to avoid redefining identical stubs, and the Cy
Testing frontend integrations without production credentials requires stubbing network requests using cy.intercept() . This ensures that sensitive API endpoints are not called and prevents side effects in production environments. A specific design concern arises regarding the execution order of the Cypress lifecycle. When cy.intercept() is defined within a b
When executing tests across parallel containers using cypress run --parallel , the timing between network stub registration and the actual request dispatch can become nondeterministic. This behavior often manifests as intermittent 404 errors in the logs that do not provide a clear trace of why the intercept failed to catch the request. The goal is to ensure
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