If you are reading this, you probably already love Kotlin for its conciseness and power. You use data classes , when expressions, and extension functions daily. But when it comes to testing that code, do you feel like you are still living in the past? Are you writing tests that look like Java 6?
src/ test/kotlin/ # Unit tests (run fast, no Android/Server) integrationTest/ # Integration tests (use real DB) testFixtures/ # Shared test data (factories, builders) curso de testing kotlin
@Test fun `state flow emits new values`() = runTest { val viewModel = MyViewModel() val collector = viewModel.stateFlow.test { viewModel.doAction("Click") // Await the next emission val item = awaitItem() assertEquals("Loading", item.status) // Ensure no extra items came cancelAndIgnoreRemainingEvents() } } A professional Kotlin project separates test sources by type: If you are reading this, you probably already
Did you find this "curso" useful? Share your biggest testing pain point in the comments below! Are you writing tests that look like Java 6
@Test fun `adding 2 and 3 should return 5`() { val result = Calculator().add(2, 3) assertEquals(5, result) // Or even nicer: assertNotNull(result) } }
@Test fun `fetchUser returns data after network call`() = runTest { val client = ApiClient() // This virtual time will skip the delay instantly. val user = client.fetchUser("123") assertEquals("John Doe", user.name) } }