feat: 참가자 수와 결과 수가 일치하지 않으면 예외가 발생한다

Author: kimbro97

src/main/java/nextstep/ladder/controller/LadderController.java

@@ -19,7 +19,7 @@ public static void main(String[] args) {
         OutputView.printLadders(lines);
         OutputView.printInputResults(inputLadderResults);
 
-//        LadderGame ladderGame = new LadderGame(names);
+        LadderGame ladderGame = new LadderGame(names, lines, inputLadderResults);
 
 //        OutputView.printNamesAndLadders(ladderGame);
 //        OutputView.printInputResults(inputLadderResults);

src/main/java/nextstep/ladder/domain/LadderGame.java

@@ -1,11 +1,17 @@
 package nextstep.ladder.domain;
 
+import java.util.List;
+
 public class LadderGame {
     private Names names;
     private Lines lines;
+    private final List<LadderResult> results;
 
-    public LadderGame(Names names) {
+    public LadderGame(Names names, Lines lines, List<LadderResult> results) {
         this.names = names;
+        this.lines = lines;
+        validateResults(results);
+        this.results = results;
     }
 
     public Names getNames() {
@@ -15,4 +21,10 @@ public Names getNames() {
     public Lines getLines() {
         return lines;
     }
+
+    private void validateResults(List<LadderResult> results) {
+        if (results.size() != names.size()) {
+            throw new IllegalArgumentException("참가자 수와 결과 수가 일치하지 않습니다.");
+        }
+    }
 }

src/test/java/nextstep/ladder/domain/LadderGameTest.java

@@ -0,0 +1,25 @@
+package nextstep.ladder.domain;
+
+import nextstep.ladder.domain.strategy.RandomLadderPoint;
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+class LadderGameTest {
+
+    @Test
+    @DisplayName("참가자 수와 결과 수가 일치하지 않으면 예외가 발생한다")
+    void validateLadderResults_exception() {
+        Names names = new Names(List.of(new Name("a")));
+        List<LadderResult> inputLadderResults = List.of(new LadderResult("꽝"), new LadderResult("1000"));
+        Lines lines = new Lines();
+        lines.initialize(1, new Height(1), new RandomLadderPoint());
+        Assertions.assertThatIllegalArgumentException().isThrownBy(() -> {
+            new LadderGame(names, lines, inputLadderResults);
+        });
+    }
+}