test: BaseballGameService 게임 로직 테스트 추가

Author: dukcode

src/test/java/com/kakao/onboarding/precource/dukeyun/baseball/baseball/BaseballGameServiceTest.java

@@ -0,0 +1,78 @@
+package com.kakao.onboarding.precource.dukeyun.baseball.baseball;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import com.kakao.onboarding.precource.dukeyun.baseball.mock.TestBaseballNumberGenerator;
+import java.util.List;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayNameGeneration;
+import org.junit.jupiter.api.DisplayNameGenerator;
+import org.junit.jupiter.api.Test;
+
+@DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
+class BaseballGameServiceTest {
+
+	private BaseballGameService baseballGameService;
+
+	@BeforeEach
+	public void init() {
+		baseballGameService = new BaseballGameService(new TestBaseballNumberGenerator(List.of(1, 2, 3)));
+		baseballGameService.init();
+	}
+
+	@Test
+	public void 정답_시_결과_객체에_클리어_정보를_반환한다() throws Exception {
+		// given
+		BaseballGameTurnInput input = new BaseballGameTurnInput("123");
+
+		// when
+		BaseballGameTurnResult result = (BaseballGameTurnResult) baseballGameService.playTurn(input);
+
+		//then
+		assertThat(result.isGameCleared()).isTrue();
+		assertThat(result.getNumBall()).isEqualTo(0);
+		assertThat(result.getNumStrike()).isEqualTo(3);
+	}
+
+	@Test
+	public void 정답이_아닐_시_결과_객체에_클리어_실패_정보를_반환한다() throws Exception {
+		// given
+		BaseballGameTurnInput input = new BaseballGameTurnInput("132");
+
+		// when
+		BaseballGameTurnResult result = (BaseballGameTurnResult) baseballGameService.playTurn(input);
+
+		//then
+		assertThat(result.isGameCleared()).isFalse();
+		assertThat(result.getNumBall()).isEqualTo(2);
+		assertThat(result.getNumStrike()).isEqualTo(1);
+	}
+
+	@Test
+	public void 모두_틀리면_볼과_스트라이크_모두_0이다() throws Exception {
+		// given
+		BaseballGameTurnInput input = new BaseballGameTurnInput("456");
+
+		// when
+		BaseballGameTurnResult result = (BaseballGameTurnResult) baseballGameService.playTurn(input);
+
+		//then
+		assertThat(result.isGameCleared()).isFalse();
+		assertThat(result.getNumBall()).isEqualTo(0);
+		assertThat(result.getNumStrike()).isEqualTo(0);
+	}
+
+	@Test
+	public void 모두_자리만_다르면_3볼이다() throws Exception {
+		// given
+		BaseballGameTurnInput input = new BaseballGameTurnInput("312");
+
+		// when
+		BaseballGameTurnResult result = (BaseballGameTurnResult) baseballGameService.playTurn(input);
+
+		//then
+		assertThat(result.isGameCleared()).isFalse();
+		assertThat(result.getNumBall()).isEqualTo(3);
+		assertThat(result.getNumStrike()).isEqualTo(0);
+	}
+}

src/test/java/com/kakao/onboarding/precource/dukeyun/baseball/mock/TestBaseballNumberGenerator.java

@@ -0,0 +1,18 @@
+package com.kakao.onboarding.precource.dukeyun.baseball.mock;
+
+import com.kakao.onboarding.precource.dukeyun.baseball.baseball.BaseballNumber;
+import com.kakao.onboarding.precource.dukeyun.baseball.baseball.BaseballNumberGenerator;
+import java.util.List;
+
+public class TestBaseballNumberGenerator implements BaseballNumberGenerator {
+	private final List<Integer> fixedNumbers;
+
+	public TestBaseballNumberGenerator(List<Integer> fixedNumbers) {
+		this.fixedNumbers = fixedNumbers;
+	}
+
+	@Override
+	public BaseballNumber generate() {
+		return new BaseballNumber(fixedNumbers);
+	}
+}