Merge pull request #691 from uni-bremen-agst/delete-files-created-by-…

…tests

Delete files created by tests.

Assets/SEE/DataModel/DG/IO/GraphWriter.cs

@@ -45,7 +45,6 @@ public static void Save(string filename, Graph graph, string hierarchicalEdgeTyp
                 Debug.LogError($"Could not save graph to GXL file '{filename}' due to: {e.Message}.\n");
                 throw;
             }
-            Debug.Log($"Successfully saved graph to file '{filename}'!");
         }
 
         /// <summary>

Assets/SEE/Utils/FileIO.cs

@@ -24,7 +24,7 @@ public static class FileIO
         /// <param name="fromLine">the start of the requested line range</param>
         /// <param name="toLine">the end of the requested line range</param>
         /// <returns>file content in the specified line range</returns>
-        public static string Read(string fileName, int fromLine, int toLine)
+        internal static string Read(string fileName, int fromLine, int toLine)
         {
             UnityEngine.Assertions.Assert.IsTrue(fromLine > 0 && fromLine <= toLine);
 
@@ -49,5 +49,18 @@ public static string Read(string fileName, int fromLine, int toLine)
             }
             return result.ToString();
         }
+
+        /// <summary>
+        /// If a file named <paramref name="filename"/> exists, it will be deleted.
+        /// If it does not exist, nothing happens.
+        /// </summary>
+        /// <param name="filename">file to be deleted</param>
+        internal static void DeleteIfExists(string filename)
+        {
+            if (File.Exists(filename))
+            {
+                File.Delete(filename);
+            }
+        }
     }
-}
+}