Medium Testing Reactive Code

Verify Error Signals

Traducción al español en progresoEl contenido detallado de esta lección aún se está traduciendo. Mientras tanto, se muestra en inglés.

Write a StepVerifier test for a Flux that emits "OK" then throws an IllegalStateException("Boom"). Verify the element, then verify the error. Print "Error test passed!".

expectError() verifies that the stream terminates with an error.

Esperado

Error test passed!

Anterior Siguiente

Main.kt

Verify Error Signals

medium⏱ 15 minkotlinreactorchallengetesting

Write a StepVerifier test for a Flux that emits "OK" then throws an IllegalStateException("Boom"). Verify the element, then verify the error. Print "Error test passed!".

expectError() verifies that the stream terminates with an error.

Why this works

expectError(Class) verifies the stream terminated with a specific error type. Unlike verifyComplete(), .verify() is used after expectError() to trigger the verification.

Expected output

Error test passed!

Verify Error Signals

Traducción al español en progresoEl contenido detallado de esta lección aún se está traduciendo. Mientras tanto, se muestra en inglés.

Write a StepVerifier test for a Flux that emits "OK" then throws an IllegalStateException("Boom"). Verify the element, then verify the error. Print "Error test passed!".

expectError() verifies that the stream terminates with an error.

Esperado

Error test passed!

Verify Error Signals

medium⏱ 15 minkotlinreactorchallengetesting

Write a StepVerifier test for a Flux that emits "OK" then throws an IllegalStateException("Boom"). Verify the element, then verify the error. Print "Error test passed!".

expectError() verifies that the stream terminates with an error.

Why this works

expectError(Class) verifies the stream terminated with a specific error type. Unlike verifyComplete(), .verify() is used after expectError() to trigger the verification.

Expected output

Error test passed!