Refactoring test

SampleTest.kt

fun selectMaxValue(first: Int, second: Int, third: Int): Int {   
    ......    
    return 正確的最大數
}
......
@Test
fun selectMaxValue_whenInputMaxValueIntoFirstParam_thenReturnMaxValue() {
    val result = chooseTheMaxValue(6, 2, 1)
    assertThat(result, `is`(6))
}