test: 실행결과 생성, 글자수 예외 테스트

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

@@ -0,0 +1,25 @@
+package nextstep.ladder.domain;
+
+public class ExecuteResult {
+    private static final int NAME_LENGTH_MAX = 5;
+
+    private final String name;
+
+    public ExecuteResult(String name) {
+        if (name.length() > NAME_LENGTH_MAX) {
+            throw new IllegalArgumentException("글자수는 최대 5글자까지 부여할 수 있습니다.");
+        }
+        this.name = name;
+    }
+
+    public String name() {
+        return this.name;
+    }
+
+    @Override
+    public String toString() {
+        return "ExecuteResult{" +
+                "name='" + name + '\'' +
+                '}';
+    }
+}

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

@@ -0,0 +1,22 @@
+package nextstep.ladder.domain;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
+
+public class ExecuteResultTest {
+
+    @Test
+    void create() {
+        ExecuteResult result = new ExecuteResult("꽝");
+        assertThat(result.name()).isEqualTo(new ExecuteResult("꽝").name());
+    }
+
+    @Test
+    void 글자수_5이상시_예외() {
+        assertThatIllegalArgumentException()
+                .isThrownBy(() -> new ExecuteResult("500000"))
+                .withMessageContaining("글자수는 최대 5글자까지 부여할 수 있습니다.");
+    }
+}