지하철 초기화 feat techeer-sv#1

src/main/java/subway/SubwayInitializer.java

@@ -0,0 +1,31 @@
+package subway;
+
+public class SubwayInitializer {
+    private final SubwayService subwayService;
+
+    public SubwayInitializer(SubwayService subwayService) {
+        this.subwayService = subwayService;
+    }
+
+    public void initialize() {
+        initializeStations();
+        initializeLines();
+    }
+
+    private void initializeStations() {
+        subwayService.addStation("교대역");
+        subwayService.addStation("강남역");
+        subwayService.addStation("역삼역");
+        subwayService.addStation("남부터미널역");
+        subwayService.addStation("양재역");
+        subwayService.addStation("양재시민의숲역");
+        subwayService.addStation("매봉역");
+    }
+
+    private void initializeLines() {
+        subwayService.addLine("2호선", new String[]{"교대역", "강남역", "역삼역"});
+        subwayService.addLine("3호선", new String[]{"교대역", "남부터미널역", "양재역", "매봉역"});
+        subwayService.addLine("신분당선", new String[]{"강남역", "양재역", "양재시민의숲역"});
+    }
+
+}

src/main/java/subway/SubwayService.java

@@ -1,4 +1,25 @@
 package subway;
 
+import subway.domain.Line;
+import subway.domain.LineRepository;
+import subway.domain.Station;
+import subway.domain.StationRepository;
+
 public class SubwayService {
+
+    public void addStation(String name) {
+        StationRepository.addStation(new Station(name));
+    }
+
+    public void addLine(String name, String[] stationNames) {
+        Line line = new Line(name);
+        for (String stationName : stationNames) {
+            Station station = StationRepository.stations().stream()
+                    .filter(s -> s.getName().equals(stationName))
+                    .findFirst()
+                    .orElseThrow(() -> new IllegalArgumentException("[ERROR] 존재하지 않는 역입니다."));
+            line.addStation(station);
+        }
+        LineRepository.addLine(line);
+    }
 }

src/main/java/subway/domain/Line.java

@@ -1,7 +1,12 @@
 package subway.domain;
 
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
 public class Line {
     private String name;
+    private List<Station> stations = new ArrayList<>();
 
     public Line(String name) {
         this.name = name;
@@ -11,5 +16,11 @@ public String getName() {
         return name;
     }
 
-    // 추가 기능 구현
+    public void addStation(Station station) {
+        stations.add(station);
+    }
+
+    public List<Station> getStations() {
+        return Collections.unmodifiableList(stations);
+    }
 }

src/test/java/subway/SubwayInitializerTest.java

@@ -0,0 +1,72 @@
+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 subway.domain.Line;
+import subway.domain.LineRepository;
+import subway.domain.Station;
+import subway.domain.StationRepository;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class SubwayInitializerTest {
+
+    @Nested
+    @DisplayName("SubwayInitializer")
+    class SubwayService_Init {
+        SubwayInitializer subwayInitializer;
+        SubwayService subwayService;
+
+        @BeforeEach
+        void setUp() {
+            subwayInitializer = new SubwayInitializer(subwayService);
+        }
+
+        @Test
+        @DisplayName("지하철 초기화")
+        void initSubwayLine() {
+            subwayInitializer.initialize();
+
+            // 지하철 역 초기화
+            assertStationsInitialized(StationRepository.stations());
+
+            // 지하철 노선 초기화
+            assertLinesInitialized(LineRepository.lines());
+        }
+        private void assertStationsInitialized(List<Station> stations) {
+            assertEquals(7, stations.size());
+            assertAll("stations",
+                    () -> assertTrue(stations.stream().anyMatch(station -> station.getName().equals("교대역"))),
+                    () -> assertTrue(stations.stream().anyMatch(station -> station.getName().equals("강남역"))),
+                    () -> assertTrue(stations.stream().anyMatch(station -> station.getName().equals("역삼역"))),
+                    () -> assertTrue(stations.stream().anyMatch(station -> station.getName().equals("남부터미널역"))),
+                    () -> assertTrue(stations.stream().anyMatch(station -> station.getName().equals("양재역"))),
+                    () -> assertTrue(stations.stream().anyMatch(station -> station.getName().equals("양재시민의숲역"))),
+                    () -> assertTrue(stations.stream().anyMatch(station -> station.getName().equals("매봉역")))
+            );
+        }
+
+        private void assertLinesInitialized(List<Line> lines) {
+            assertEquals(3, lines.size());
+
+            assertLine(lines, "2호선", new String[]{"교대역", "강남역", "역삼역"});
+            assertLine(lines, "3호선", new String[]{"교대역", "남부터미널역", "양재역", "매봉역"});
+            assertLine(lines, "신분당선", new String[]{"강남역", "양재역", "양재시민의숲역"});
+        }
+
+        private void assertLine(List<Line> lines, String lineName, String[] stationNames) {
+            Line line = lines.stream().filter(l -> l.getName().equals(lineName)).findFirst().orElse(null);
+
+            assertNotNull(line, lineName);
+            assertEquals(stationNames.length, line.getStations().size(), lineName);
+
+            for (int i = 0; i < stationNames.length; i++) {
+                assertEquals(stationNames[i], line.getStations().get(i).getName(), lineName);
+            }
+        }
+    }
+}

src/test/java/subway/SubwayServiceTest.java

@@ -1,37 +1,5 @@
 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"))
-            );
-        }
-    }
 }