feat(step3): 자동차 경주

src/main/java/calculator/Calculator.java

@@ -5,14 +5,15 @@
 
 public class Calculator {
     private static final String ADDITOR = ",|:";
+    private static final String NEW_OPERATOR = "//(.)\n(.*)";
 
     public static int calculate(String text){
-        if(isBlank(text)){
+        if (isBlank(text)){
             return 0;
         }
 
-        Matcher m = Pattern.compile("//(.)\n(.*)").matcher(text);
-        if(m.find()){
+        Matcher m = Pattern.compile(NEW_OPERATOR).matcher(text);
+        if (m.find()){
             return sumWithCustomizingAdditor(m);
         }
 
@@ -27,9 +28,12 @@ private static String[] split(String text){
         return text.split(ADDITOR);
     }
 
+    private static final int NEW_ADDITOR = 1;
+    private static final int SPLIT_TEXT = 2;
+
     private static int sumWithCustomizingAdditor(Matcher m){
-        String customDelimiter = m.group(1);
-        String[] tokens = m.group(2).split(customDelimiter);
+        String customDelimiter = m.group(NEW_ADDITOR);
+        String[] tokens = m.group(SPLIT_TEXT).split(customDelimiter);
 
         return sum(toInts(tokens));
     }
@@ -38,15 +42,15 @@ private static int sumWithCustomizingAdditor(Matcher m){
     private static int sum(int[] numbers) {
         int result = 0;
 
-        for(int number : numbers){
+        for (int number : numbers){
             result += number;
         }
         return result;
     }
 
     private static int[] toInts(String[] values){
         int[] numbers = new int[values.length];
-        for(int i=0; i<values.length ; i++){
+        for (int i=0; i<values.length ; i++){
             numbers[i] = checkPositive(values[i]);;
         }
         return numbers;
@@ -55,8 +59,8 @@ private static int[] toInts(String[] values){
 
     private static int checkPositive(String value){
         int result = Integer.parseInt(value);
-        if(result < 0){
-            throw new RuntimeException();
+        if (result < 0){
+            throw new IllegalArgumentException();
         }
         return result;
     }

src/main/java/racingcar/Controller.java

@@ -0,0 +1,10 @@
+package racingcar;
+
+public class Controller {
+    public void racingGame(){
+        InputView inputView = new InputView();
+
+        int numOfCar = inputView.numberOfCar();
+        int numOfTry = inputView.ChanceOfTry();
+    }
+}

src/main/java/racingcar/InputView.java

@@ -0,0 +1,22 @@
+package racingcar;
+
+import java.util.Scanner;
+
+public class InputView {
+
+    private int numberOfCar;
+    private int chanceOfTry;
+
+    Scanner scanner = new Scanner(System.in);
+
+    public int numberOfCar(){
+        System.out.println("자동차 대수는 몇 대 인가요?\n");
+        return scanner.nextInt();
+    }
+
+    public int ChanceOfTry(){
+        System.out.println("시도할 회수는 몇 회 인가요?\n");
+        return scanner.nextInt();
+    }
+
+}

src/main/java/racingcar/OutputView.java

@@ -0,0 +1,8 @@
+package racingcar;
+
+public class OutputView {
+    public void racingResult(String text){
+        System.out.println("실행 결과");
+        System.out.println(text);
+    }
+}

src/main/java/racingcar/RacingCar.java

@@ -0,0 +1,10 @@
+package racingcar;
+
+public class RacingCar {
+
+    public static String racingCar(int num){
+        if (num == 0)
+            return "";
+        return "num";
+    }
+}

src/test/java/calculator/CalculatorTest.java

@@ -9,14 +9,16 @@
 import static calculator.Calculator.calculate;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.junit.jupiter.api.Assertions.assertAll;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class CalculatorTest {
 
     @DisplayName("음수나 숫자가 아니면 에러")
     @ParameterizedTest
     @ValueSource(strings = {"-1", "1#2#3"})
     void exception_test(String elements) {
-        Assertions.assertThrows(RuntimeException.class, () -> {
+        Assertions.assertThrows(IllegalArgumentException.class, () -> {
             calculate("-1");
         });
     }
@@ -48,7 +50,9 @@ void single_text() {
     @Test
     @DisplayName("Null 값 빈문자")
     void null_value() {
-        assertThat(calculate(null)).isEqualTo(0);
-        assertThat(calculate("")).isEqualTo(0);
+        assertAll(
+                ()->assertEquals(calculate(null),0),
+                ()->assertEquals(calculate(""),0)
+        );
     }
 }

src/test/java/racingcar/RacingTest.java

@@ -0,0 +1,18 @@
+package racingcar;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static racingcar.RacingCar.racingCar;
+
+public class RacingTest {
+
+
+    @Test
+    @DisplayName("자동차 대수 0")
+    void null_value() {
+        assertThat(racingCar(0)).isEqualTo("");
+    }
+}