adapt test due to changed exception messages

VectoCore/VectoCoreTest/FileIO/JsonTest.cs

@@ -60,7 +60,7 @@ namespace TUGraz.VectoCore.Tests.FileIO
 			var json = (JObject)JToken.ReadFrom(new JsonTextReader(File.OpenText(TestJobFile)));
 			((JObject)json["Body"]).Property("EngineFile").Remove();
 
-			AssertHelper.Exception<VectoException>(() => new JSONInputDataV2(json, TestJobFile), "Failed to read Engine file.");
+			AssertHelper.Exception<VectoException>(() => new JSONInputDataV2(json, TestJobFile), "Failed to read input data: Key EngineFile not found");
 		}
 
 		[TestMethod]
@@ -69,7 +69,7 @@ namespace TUGraz.VectoCore.Tests.FileIO
 			var json = (JObject)JToken.ReadFrom(new JsonTextReader(File.OpenText(TestJobFile)));
 			((JObject)json["Body"]).Property("GearboxFile").Remove();
 
-			AssertHelper.Exception<VectoException>(() => new JSONInputDataV2(json, TestJobFile), "Failed to read Gearbox file.");
+			AssertHelper.Exception<VectoException>(() => new JSONInputDataV2(json, TestJobFile), "Failed to read input data: Key GearboxFile not found");
 		}
 
 		[TestMethod]
@@ -78,7 +78,7 @@ namespace TUGraz.VectoCore.Tests.FileIO
 			var json = (JObject)JToken.ReadFrom(new JsonTextReader(File.OpenText(TestJobFile)));
 			((JObject)json["Body"]).Property("VehicleFile").Remove();
 
-			AssertHelper.Exception<VectoException>(() => new JSONInputDataV2(json, TestJobFile), "Failed to read Vehicle file.");
+			AssertHelper.Exception<VectoException>(() => new JSONInputDataV2(json, TestJobFile), "Failed to read input data: Key VehicleFile not found");
 		}
 
 		[TestMethod]