An example of a better converted Kotlin class

kotlin_test_conversion.kt

class ExampleTest {

    private val subject: ClassToTest = mock()

    @Test
    fun `verify this causes that`() {
        // Arrange
        val aValue = 10
        whenever(mockedClass.getValue()).thenReturn(aValue)
        // Act
        val result = subject.callFunctionToBeTested(mockedClass)
        // Assert
        verify(mockedClass).getValue()
        verify(mockedClass).someSideEffect()
        result `should equal` aValue
    }

}