testEffect

Executes a test with the given effect transmission and runs the provided assertions.

This method processes the effect through the configured router and captures all resulting data and effect streams for assertion. The assertions are executed with access to the captured streams through the TestResult receiver.

Parameters

transformer.test()
    .testEffect(CacheEffect.Invalidate("user_data")) {
        // Assert that cache invalidation triggered cleanup
        val clearEffect = lastEffect<CacheEffect.Cleared>()
        assertNotNull(clearEffect)

        // Assert no data was emitted
        assertTrue(dataStream.isEmpty())
    }