Fix integration tests

Author: GeertvanHorrik

src/Squirrel/UpdateManager.ApplyReleases.cs

@@ -323,6 +323,8 @@ async Task<ReleaseEntry> createFullPackagesFromDeltas(IEnumerable<ReleaseEntry>
             {
                 Contract.Requires(releasesToApply != null);
 
+                progress = progress ?? new ApplyReleasesProgress(releasesToApply.Count(), x => { });
+
                 // If there are no remote releases at all, bail
                 if (!releasesToApply.Any()) {
                     return null;

test/ApplyReleasesProgressTests.cs

@@ -11,7 +11,7 @@ public class ApplyReleasesProgressTests
     {
 
         [Fact]
-        public void CalculatesPercentageCorrectly()
+        public async void CalculatesPercentageCorrectly()
         {
             // Just 1 complex situation should be enough to cover this
 
@@ -25,6 +25,9 @@ public void CalculatesPercentageCorrectly()
             // Report 40 % in current release
             progress.ReportReleaseProgress(50);
 
+            // Required for callback to be invoked
+            await Task.Delay(50);
+
             // 20 per release
             // 10 because we are half-way the 3rd release
             var expectedProgress = 20 + 20 + 10;

test/ApplyReleasesTests.cs

@@ -437,7 +437,7 @@ public async Task CreateFullPackagesFromDeltaSmokeTest()
                 var deltaEntry = ReleaseEntry.GenerateFromFile(Path.Combine(tempDir, "theApp", "packages", "Squirrel.Core.1.1.0.0-delta.nupkg"));
 
                 var resultObs = (Task<ReleaseEntry>)fixture.GetType().GetMethod("createFullPackagesFromDeltas", BindingFlags.NonPublic | BindingFlags.Instance)
-                    .Invoke(fixture, new object[] { new[] {deltaEntry}, baseEntry });
+                    .Invoke(fixture, new object[] { new[] {deltaEntry}, baseEntry, null });
 
                 var result = await resultObs;
                 var zp = new ZipPackage(Path.Combine(tempDir, "theApp", "packages", result.Filename));