Code coverage tests (extended)

Tests.kt

@RunWith(AndroidJUnit4::class)
class Tests {
    @Test
    fun basicTests() {
        assertEquals(4, JavaClass().function1())
        assertEquals(4, KotlinClass().function1())
    }

    @Test
    fun basicTests2() {
        assertEquals(6, JavaClass().function2())
        assertEquals(6, KotlinClass().function2())
    }
}