test : 지하철 노선 초기화

지하철 노선 초기화 시 기본적인 역 목록을 설정하는 기능

build.gradle

@@ -18,3 +18,5 @@ dependencies {
 test {
     useJUnitPlatform()
 }
+sourceCompatibility = JavaVersion.VERSION_1_9
+targetCompatibility = JavaVersion.VERSION_1_9

src/main/java/subway/SubwayService.java

@@ -0,0 +1,4 @@
+package subway;
+
+public class SubwayService {
+}

src/test/java/subway/SubwayServiceTest.java

@@ -0,0 +1,37 @@
+package subway;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+public class SubwayServiceTest {
+
+    @Nested
+    @DisplayName("SubwayService Initialization")
+    class SubwayService_Init {
+        SubwayService subwayService;
+
+        @BeforeEach
+        void setUp() {
+            subwayService = new SubwayService();
+        }
+
+        @Test
+        @DisplayName("지하철 노선도 초기화")
+        void initSubwayLine() {
+            subwayService.initSubwayLine();
+
+            assertAll(
+                    () -> assertEquals(Arrays.asList("교대역", "강남역", "역삼역"), subwayService.getStations("2호선")),
+                    () -> assertEquals(Arrays.asList("교대역", "남부터미널역", "양재역", "매봉역"), subwayService.getStations("3호선")),
+                    () -> assertEquals(Arrays.asList("강남역", "양재역", "양재시민의숲역"), subwayService.getStations("신분당선"))
+            );
+        }
+    }
+}