From 638255f2ba5c8ac617659a444f599cb71cdad0cb Mon Sep 17 00:00:00 2001
From: eunwoo song <presentsong@naver.com>
Date: Mon, 6 Nov 2023 01:49:17 +0900
Subject: [PATCH] =?UTF-8?q?feat:=20=EC=9E=90=EB=8F=99=EC=B0=A8=EC=9D=98=20?=
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---
 src/main/kotlin/racingcar/Car.kt       | 14 +++++++++++---
 src/main/kotlin/racingcar/Cars.kt      |  4 ++--
 src/main/kotlin/racingcar/InputView.kt |  5 +++++
 src/main/kotlin/racingcar/Main.kt      |  5 +++--
 src/test/kotlin/racingcar/CarTest.kt   | 15 ++++++++++++---
 src/test/kotlin/racingcar/CarsTest.kt  |  4 ++--
 6 files changed, 35 insertions(+), 12 deletions(-)

diff --git a/src/main/kotlin/racingcar/Car.kt b/src/main/kotlin/racingcar/Car.kt
index 3c8e7cafbb..b882a6139c 100644
--- a/src/main/kotlin/racingcar/Car.kt
+++ b/src/main/kotlin/racingcar/Car.kt
@@ -1,12 +1,18 @@
 package racingcar
 
-class Car(val position: Int) {
-    constructor() : this(INITIAL_POSITION)
+class Car(val name: String, val position: Int) {
+    init {
+        require(name.length in MINIMUM_CAR_NAME_LENGTH..MAXIMUM_CAR_NAME_LENGTH) {
+            "자동차의 이름은 ${MINIMUM_CAR_NAME_LENGTH}글자 이상 ${MAXIMUM_CAR_NAME_LENGTH}글자 이하만 가능합니다."
+        }
+    }
+
+    constructor(name: String) : this(name, INITIAL_POSITION)
 
     fun move(power: Int): Car {
         validatePower(power)
         if (power >= MINIMUM_AMOUNT_TO_MOVE) {
-            return Car(position + 1)
+            return Car(name, position + 1)
         }
         return this
     }
@@ -22,5 +28,7 @@ class Car(val position: Int) {
         const val MINIMUM_AMOUNT_TO_MOVE = 4
         const val MAXIMUM_MOVE_POWER = 9
         const val MINIMUM_MOVE_POWER = 0
+        const val MINIMUM_CAR_NAME_LENGTH = 1
+        const val MAXIMUM_CAR_NAME_LENGTH = 5
     }
 }
diff --git a/src/main/kotlin/racingcar/Cars.kt b/src/main/kotlin/racingcar/Cars.kt
index ab00706ca0..adec065d09 100644
--- a/src/main/kotlin/racingcar/Cars.kt
+++ b/src/main/kotlin/racingcar/Cars.kt
@@ -8,10 +8,10 @@ class Cars(val cars: List<Car>, private val powerGenerator: PowerGenerator) {
     }
 
     companion object {
-        fun initializeWithNumberOfCars(numberOfCars: Int, powerGenerator: PowerGenerator): Cars {
+        fun initialize(numberOfCars: Int, names: List<String>, powerGenerator: PowerGenerator): Cars {
             val cars = mutableListOf<Car>()
             repeat(numberOfCars) {
-                cars.add(Car())
+                cars.add(Car(names[it]))
             }
             return Cars(cars, powerGenerator)
         }
diff --git a/src/main/kotlin/racingcar/InputView.kt b/src/main/kotlin/racingcar/InputView.kt
index 8d96975093..36999f68d6 100644
--- a/src/main/kotlin/racingcar/InputView.kt
+++ b/src/main/kotlin/racingcar/InputView.kt
@@ -11,4 +11,9 @@ object InputView {
         println("시도할 회수는 몇 회 인가요?")
         return readln().toInt()
     }
+
+    fun inputNameOfCars(): List<String> {
+        println("자동차 이름을 입력하세요. (이름은 쉼표(,) 기준으로 구분)")
+        return readln().split(",")
+    }
 }
diff --git a/src/main/kotlin/racingcar/Main.kt b/src/main/kotlin/racingcar/Main.kt
index 30e64b2b38..b21814ff1b 100644
--- a/src/main/kotlin/racingcar/Main.kt
+++ b/src/main/kotlin/racingcar/Main.kt
@@ -2,9 +2,10 @@ package racingcar
 
 fun main() {
     val numberOfCars = InputView.inputNumberOfCars()
-    val numberOfMoves = InputView.inputNumberOfMoves()
+    val namesOfCars = InputView.inputNameOfCars()
+    val cars = Cars.initialize(numberOfCars, namesOfCars, RandomPowerGenerator)
 
-    val cars = Cars.initializeWithNumberOfCars(numberOfCars, RandomPowerGenerator)
+    val numberOfMoves = InputView.inputNumberOfMoves()
 
     OutputView.printResultTitle()
 
diff --git a/src/test/kotlin/racingcar/CarTest.kt b/src/test/kotlin/racingcar/CarTest.kt
index 6f102d7562..16d81c452d 100644
--- a/src/test/kotlin/racingcar/CarTest.kt
+++ b/src/test/kotlin/racingcar/CarTest.kt
@@ -7,17 +7,26 @@ import org.junit.jupiter.params.ParameterizedTest
 import org.junit.jupiter.params.provider.ValueSource
 
 internal class CarTest {
+    @Test
+    fun `자동차의 이름은 1자 이상이어야 한다`() {
+        assertThrows<IllegalArgumentException> { Car("") }
+    }
+
+    @Test
+    fun `자동차의 이름은 5자 이하여야 한다`() {
+        assertThrows<IllegalArgumentException> { Car("123456") }
+    }
 
     @Test
     fun `자동차는 4 이상이 들어오면 움직인다`() {
-        val car = Car()
+        val car = Car("name")
         val result = car.move(4)
         assertThat(result.position).isOne()
     }
 
     @Test
     fun `자동차는 4 미만이 들어오면 움직이지 않는다`() {
-        val car = Car()
+        val car = Car("name")
         val result = car.move(3)
         assertThat(result.position).isZero()
     }
@@ -25,7 +34,7 @@ internal class CarTest {
     @ParameterizedTest
     @ValueSource(ints = [-1, 10])
     fun `자동차는 0 이상 9 이하의 값만 가능하다`(power: Int) {
-        val car = Car()
+        val car = Car("name")
 
         assertThrows<IllegalArgumentException> {
             car.move(power)
diff --git a/src/test/kotlin/racingcar/CarsTest.kt b/src/test/kotlin/racingcar/CarsTest.kt
index 4000a1cb3a..a4d1a319df 100644
--- a/src/test/kotlin/racingcar/CarsTest.kt
+++ b/src/test/kotlin/racingcar/CarsTest.kt
@@ -7,7 +7,7 @@ internal class CarsTest {
 
     @Test
     fun `자동차들은 특정 숫자 이상이 들어오면 움직인다`() {
-        val cars = Cars.initializeWithNumberOfCars(3, FixedPowerGenerator(4))
+        val cars = Cars.initialize(3, listOf("a", "b", "c"), FixedPowerGenerator(4))
 
         val result = cars.move()
 
@@ -16,7 +16,7 @@ internal class CarsTest {
 
     @Test
     fun `자동차들은 특정 숫자 미만이 들어오면 움직이지 않는다`() {
-        val cars = Cars.initializeWithNumberOfCars(3, FixedPowerGenerator(3))
+        val cars = Cars.initialize(3, listOf("a", "b", "c"), FixedPowerGenerator(3))
 
         val result = cars.move()