Bug/max ballots (#54)

* update submodule reference

* when loading max ballots, sanitize output

* update project reference

update version

libs/ElectionGuard-SDK-C-Implementation

@@ -1 +1 @@
-Subproject commit 7f59e712a5230d5a1bfbe261cade1730df4d01c8
+Subproject commit 3115c412ece99dc5e19635995d049d4206bb217e

src/ElectionGuard/ElectionGuard.SDK.csproj

@@ -12,7 +12,7 @@
 		<RepositoryUrl>https://github.com/microsoft/ElectionGuard-SDK-CSharp.git</RepositoryUrl>
 		<PackageProjectUrl>https://github.com/microsoft/ElectionGuard-SDK</PackageProjectUrl>
 		<RepositoryType>git</RepositoryType>
-		<VersionPrefix>1.0.3</VersionPrefix>
+		<VersionPrefix>1.0.4</VersionPrefix>
 	</PropertyGroup>
 	<ItemGroup>
 		<None Include="..\..\LICENSE">

src/ElectionGuard/ElectionGuardApi.cs

@@ -173,9 +173,11 @@ namespace ElectionGuard.SDK
                 var result = new LoadBallotsResult()
                 {
                     ExternalIdentifiers = externalIdentifiers
-                        .Select(s => Marshal.PtrToStringAnsi(s))
+                        .Select(p => Marshal.PtrToStringAnsi(p))
+                        .Where(s => !string.IsNullOrWhiteSpace(s))
                         .ToList(),
                     EncryptedBallotMessages = encryptedBallotMessages
+                        .Where(p => p.Length > 0)
                         .Select(p => ByteSerializer.ConvertToBase64String(p))
                         .ToList()
                 };

tests/TestApp/Program.cs

@@ -1,4 +1,4 @@
-using ElectionGuard.SDK;
+using ElectionGuard.SDK;
 using ElectionGuard.SDK.Models;
 using System;
 using System.Collections.Generic;
@@ -26,7 +26,7 @@ namespace TestApp
         static int NUM_TRUSTEES = 3;
         static int THRESHOLD = 2;
         static int NUM_ENCRYPTERS = 3;
-        static int NUM_SELECTIONS = 12;                 // the number of total contest selections for an election
+        static int NUM_SELECTIONS = 17;                 // the number of total contest selections for an election
         static int DECRYPTING_TRUSTEES = 2;             // must be >= THRESHOLD && <= NUM_TRUSTEES
         static int NUM_RANDOM_BALLOTS = 5;              // the number of ballots to use when executing the test
 
@@ -59,8 +59,7 @@ namespace TestApp
 
             Console.WriteLine("\n--- Encrypt Ballots ---\n");
 
-            var now = new DateTime();
-
+            var now = DateTime.Now;
 
             var expectedNumberOfSelected = 2;
             var encryptedBallotsFileName = "";
@@ -113,7 +112,7 @@ namespace TestApp
 
             var loadBallotsResult = ElectionGuardApi.LoadBallotsFile(
                 0, 
-                NUM_RANDOM_BALLOTS, 
+                2000, 
                 NUM_SELECTIONS, 
                 encryptedBallotsFileName
             );