Unit testing sample: 3. Target method after refactoring

ExamLogic.kt

package packagename

class ExamLogic {
    fun scoreExam(point: Int): String =
        when (point) {
            in 0..29 -> "赤点です！"
            in 30..79 -> "まあまあです！"
            in 80..99 -> "やるじゃん！"
            100 -> "天才です！"
            else -> "変な値を送るな！"
        }
}

ExamLogic.swift

class ExamLogic {
    func scoreExam(point: Int) -> String {
        switch point {
        case 0...29:
            return "赤点です！"
        case 30...79:
            return "まあまあです！"
        case 80...99:
            return "やるじゃん！"
        case 100:
            return "天才です！"
        default:
            return "変な値を送るな！"
        }
    }
}

ref: https://twitter.com/the_uhooi/status/1261934636466241536?s=20

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