feat(game): GameSession bundles savable state; turn + autosave hook

Semesterprojekt/src/test/java/thb/jeanluc/adventure/game/GameSessionTest.java

@@ -0,0 +1,52 @@
+package thb.jeanluc.adventure.game;
+
+import org.junit.jupiter.api.Test;
+import thb.jeanluc.adventure.io.TestIO;
+import thb.jeanluc.adventure.model.Player;
+import thb.jeanluc.adventure.model.Room;
+import thb.jeanluc.adventure.model.World;
+
+import java.util.Map;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class GameSessionTest {
+
+    private GameSession session() {
+        Room k = new Room("k", "Kitchen", "d");
+        World w = new World(Map.of("k", k), Map.of(), Map.of(), "t", "w");
+        return new GameSession(w, new Player(k, 0), "slot-a");
+    }
+
+    @Test
+    void exposesStateAndIncrementsTurn() {
+        GameSession s = session();
+        assertThat(s.getSlotName()).isEqualTo("slot-a");
+        assertThat(s.getTurn()).isZero();
+        s.incrementTurn();
+        s.incrementTurn();
+        assertThat(s.getTurn()).isEqualTo(2);
+        s.setTurn(10);
+        assertThat(s.getTurn()).isEqualTo(10);
+    }
+
+    @Test
+    void contextDelegatesToSession() {
+        GameSession s = session();
+        GameContext ctx = new GameContext(s, new TestIO());
+        assertThat(ctx.getWorld()).isSameAs(s.getWorld());
+        assertThat(ctx.getPlayer()).isSameAs(s.getPlayer());
+        assertThat(ctx.getState()).isSameAs(s.getState());
+        assertThat(ctx.getQuestLog()).isSameAs(s.getQuestLog());
+        assertThat(ctx.getSession()).isSameAs(s);
+    }
+
+    @Test
+    void legacyConstructorBuildsFreshSession() {
+        Room k = new Room("k", "Kitchen", "d");
+        World w = new World(Map.of("k", k), Map.of(), Map.of(), "t", "w");
+        GameContext ctx = new GameContext(w, new Player(k, 0), new TestIO());
+        assertThat(ctx.getSession()).isNotNull();
+        assertThat(ctx.getSession().getTurn()).isZero();
+    }
+}