diff --git a/modules/io/src/main/scala/de/nowchess/io/GameContextExport.scala b/modules/io/src/main/scala/de/nowchess/io/GameContextExport.scala
index 5a8a49c..3968e71 100644
--- a/modules/io/src/main/scala/de/nowchess/io/GameContextExport.scala
+++ b/modules/io/src/main/scala/de/nowchess/io/GameContextExport.scala
@@ -2,8 +2,6 @@ package de.nowchess.io
 
 import de.nowchess.api.game.GameContext
 
-trait GameContextExport {
-  
+trait GameContextExport:
+
   def exportGameContext(context: GameContext): String
-  
-}
diff --git a/modules/io/src/test/scala/de/nowchess/io/fen/FenParserTest.scala b/modules/io/src/test/scala/de/nowchess/io/fen/FenParserTest.scala
index 420695f..efbcbd6 100644
--- a/modules/io/src/test/scala/de/nowchess/io/fen/FenParserTest.scala
+++ b/modules/io/src/test/scala/de/nowchess/io/fen/FenParserTest.scala
@@ -131,3 +131,17 @@ class FenParserTest extends AnyFunSuite with Matchers:
 
     board shouldBe empty
 
+  test("importGameContext: valid FEN string returns Right[GameContext]"):
+    val fen = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"
+    val result = FenParser.importGameContext(fen)
+
+    result.isRight shouldBe true
+    result.fold(_ => fail("Expected Right"), ctx => ctx.turn shouldBe Color.White)
+
+  test("importGameContext: invalid FEN string returns Left[String] with error message"):
+    val invalidFen = "invalid fen string"
+    val result = FenParser.importGameContext(invalidFen)
+
+    result.isLeft shouldBe true
+    result.fold(msg => msg should include("Invalid FEN"), _ => fail("Expected Left"))
+