Unit testing sample: 1. Target method before refactoring

ExamLogic.kt

package packagename

class ExamLogic {
    fun scoreExam(point: Int): String {
        if (point < 0 || point > 100) {
            return "変な値を送るな！"
        }
        if (point < 30) {
            return "赤点です！"
        }
        if (point < 80) {
            return "まあまあです！"
        }
        if (point < 100) {
            return "やるじゃん！"
        }
        return "天才です！"
    }
}

ExamLogic.swift

class ExamLogic {
    func scoreExam(point: Int) -> String {
        if point < 0 || point > 100 {
            return "変な値を送るな！"
        }
        if point < 30 {
            return "赤点です！"
        }
        if point < 80 {
            return "まあまあです！"
        }
        if point < 100 {
            return "やるじゃん！"
        }
        return "天才です！"
    }
}

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

next: Test method
https://gist.github.com/uhooi/a8edcf5182437874626543794a82b8f2