Add comment parsing test

SaneTsvTest/Program.cs

@@ -34,5 +34,19 @@ using System.Text;
     Console.WriteLine($"Passed {testName}");
   }
 
-  Console.WriteLine("Done with tests");
 }
+
+{
+  string testName = "Comment test";
+  string testString1 = "#This is a file comment\n" +
+    " #One more file comment line\n" +
+    "column1:type:boolean\tcolumn2:binary\tcolumnthree\\nyep:string" +
+    "\n#This is a comment" +
+    "\n#Another comment line" +
+    "\nTRUE\tvalue\\\\t\0woo\tvaluetrhee" +
+    "\nFALSE\tnother\tno\\ther";
+
+  SaneTsv parsed = SaneTsv.ParseCommentedTsv(Encoding.UTF8.GetBytes(testString1));
+}
+
+Console.WriteLine("Done with tests");