GreetingServiceMockTest.kt

class GreetingServiceMockTest : KoinTest {

    private val greetingService: GreetingService by inject()

    @Test
    fun testGreetingInTheMorning() {
        startKoin { modules(koinModule) }
        declareMock<TimeService> {
            given(this.getHourOfDay()).willReturn(9)
        }
        assertEquals("Good morning, welcome to Koin", greetingService.greetings())
        stopKoin()
    }

}