object Calculator {
fun add(first: Int, second: Int) = first + second
}
@Test
fun objectMock() {
val result = Calculator.add(1, 2)
assert(result).toBe(3)
mockkObject(Calculator)
every { Calculator.add(1, 2) } returns 41
val mockedResult = Calculator.add(1, 2)
assert(mockedResult).toBe(42)
}