Fixing Checks GraphQL query on GitHub Enterprise

Directory.Build.Props

@@ -1,8 +1,8 @@
 <Project>
   <PropertyGroup>
     <Product>GitHub Extension for Visual Studio</Product>
-    <Version>2.6.0.0</Version>
+    <Version>2.6.1.0</Version>
     <Copyright>Copyright © GitHub, Inc. 2014-2018</Copyright>
     <LangVersion>7.3</LangVersion>
   </PropertyGroup>
-</Project>
+</Project>

appveyor.yml

@@ -1,5 +1,5 @@
 os: Visual Studio 2017
-version: '2.6.0.{build}'
+version: '2.6.1.{build}'
 skip_tags: true
 install:
 - ps: |

src/GitHub.App/Services/PullRequestService.cs

@@ -168,12 +168,14 @@ public async Task<Page<PullRequestListItemModel>> ReadPullRequests(
                                   LastCommit = pr.Commits(null, null, 1, null).Nodes.Select(commit =>
                                       new LastCommitSummaryAdapter
                                       {
-                                          Statuses = commit.Commit.Status
-                                                  .Select(context =>
-                                                      context.Contexts.Select(statusContext => new StatusSummaryModel
-                                                      {
-                                                          State = statusContext.State.FromGraphQl(),
-                                                      }).ToList()
+                                          Statuses = commit.Commit.Status.Select(context =>
+                                                      context == null
+                                                          ? null
+                                                          : context.Contexts
+                                                              .Select(statusContext => new StatusSummaryModel
+                                                              {
+                                                                  State = statusContext.State.FromGraphQl()
+                                                              }).ToList()
                                                   ).SingleOrDefault()
                                       }).ToList().FirstOrDefault(),
                                   Author = new ActorModel

src/GitHub.App/ViewModels/GitHubPane/PullRequestDetailViewModel.cs

@@ -57,7 +57,7 @@ public sealed class PullRequestDetailViewModel : PanePageViewModelBase, IPullReq
         bool refreshOnActivate;
         Uri webUrl;
         IDisposable sessionSubscription;
-        IReadOnlyList<IPullRequestCheckViewModel> checks;
+        IReadOnlyList<IPullRequestCheckViewModel> checks = Array.Empty<IPullRequestCheckViewModel>();
 
         /// <summary>
         /// Initializes a new instance of the <see cref="PullRequestDetailViewModel"/> class.
@@ -350,7 +350,7 @@ public async Task Load(PullRequestDetailModel pullRequest)
                 Body = !string.IsNullOrWhiteSpace(pullRequest.Body) ? pullRequest.Body : Resources.NoDescriptionProvidedMarkdown;
                 Reviews = PullRequestReviewSummaryViewModel.BuildByUser(Session.User, pullRequest).ToList();
 
-                Checks = PullRequestCheckViewModel.Build(viewViewModelFactory, pullRequest)?.ToList();
+                Checks = (IReadOnlyList<IPullRequestCheckViewModel>) PullRequestCheckViewModel.Build(viewViewModelFactory, pullRequest)?.ToList() ?? Array.Empty<IPullRequestCheckViewModel>();
 
                 await Files.InitializeAsync(Session);
 

src/GitHub.InlineReviews/Services/PullRequestSessionService.cs

@@ -364,11 +364,19 @@ public virtual async Task<PullRequestDetailModel> ReadPullRequestDetail(HostAddr
             var files = await apiClient.GetPullRequestFiles(owner, name, number).ToList();
             var lastCommitModel = await GetPullRequestLastCommitAdapter(address, owner, name, number);
 
-            result.Statuses = lastCommitModel.Statuses;
-            result.CheckSuites = lastCommitModel.CheckSuites;
-            foreach (var checkSuite in result.CheckSuites)
+            result.Statuses = (IReadOnlyList<StatusModel>) lastCommitModel.Statuses ?? Array.Empty<StatusModel>();
+
+            if (lastCommitModel.CheckSuites == null)
             {
-                checkSuite.HeadSha = lastCommitModel.HeadSha;
+                result.CheckSuites = Array.Empty<CheckSuiteModel>();
+            }
+            else
+            { 
+                result.CheckSuites = lastCommitModel.CheckSuites;
+                foreach (var checkSuite in result.CheckSuites)
+                {
+                    checkSuite.HeadSha = lastCommitModel.HeadSha;
+                }
             }
 
             result.ChangedFiles = files.Select(file => new PullRequestFileModel
@@ -829,16 +837,18 @@ async Task<LastCommitAdapter> GetPullRequestLastCommitAdapter(HostAddress addres
                      .PullRequest(Var(nameof(number))).Commits(last: 1).Nodes.Select(
                          commit => new LastCommitAdapter
                          {
-                             Statuses = commit.Commit.Status
-                                 .Select(context =>
-                                     context.Contexts.Select(statusContext => new StatusModel
-                                     {
-                                         State = statusContext.State.FromGraphQl(),
-                                         Context = statusContext.Context,
-                                         TargetUrl = statusContext.TargetUrl,
-                                         Description = statusContext.Description,
-                                     }).ToList()
-                                 ).SingleOrDefault()
+                             Statuses = commit.Commit.Status == null ? null : commit.Commit.Status
+                                 .Select(context => context == null 
+                                     ? null 
+                                     : context.Contexts
+                                         .Select(statusContext => new StatusModel
+                                         {
+                                             State = statusContext.State.FromGraphQl(),
+                                             Context = statusContext.Context,
+                                             TargetUrl = statusContext.TargetUrl,
+                                             Description = statusContext.Description,
+                                         }).ToList()
+                                     ).SingleOrDefault()
                          }
                      ).Compile();
                 }

src/GitHub.VisualStudio.UI/Views/GitHubPane/PullRequestDetailView.xaml

@@ -248,7 +248,8 @@
                                       HeaderText="Checks"
                                       IsExpanded="True"
                                       Margin="0 8 0 0"
-                                      ghfvs:ScrollingVerticalStackPanel.IsFixed="true">
+                                      ghfvs:ScrollingVerticalStackPanel.IsFixed="true"
+                                      Visibility="{Binding Checks.Count, Converter={ghfvs:CountToVisibilityConverter}}">
                     <ItemsControl ItemsSource="{Binding Checks}" Margin="0 4 12 4">
                         <ItemsControl.ItemsPanel>
                             <ItemsPanelTemplate>

src/GitHub.VisualStudio/source.extension.vsixmanifest

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011" xmlns:d="http://schemas.microsoft.com/developer/vsx-schema-design/2011">
   <Metadata>
-    <Identity Id="c3d3dc68-c977-411f-b3e8-03b0dccf7dfc" Version="2.6.0.0" Language="en-US" Publisher="GitHub, Inc" />
+    <Identity Id="c3d3dc68-c977-411f-b3e8-03b0dccf7dfc" Version="2.6.1.0" Language="en-US" Publisher="GitHub, Inc" />
     <DisplayName>GitHub Extension for Visual Studio</DisplayName>
     <Description xml:space="preserve">A Visual Studio Extension that brings the GitHub Flow into Visual Studio.</Description>
     <PackageId>GitHub.VisualStudio</PackageId>
@@ -45,4 +45,4 @@
   <Prerequisites>
     <Prerequisite Id="Microsoft.VisualStudio.Component.CoreEditor" Version="[15.0.25824.0,)" DisplayName="Visual Studio core editor" />
   </Prerequisites>
-</PackageManifest>
+</PackageManifest>

src/common/SolutionInfo.cs

@@ -18,6 +18,6 @@
 namespace System
 {
     internal static class AssemblyVersionInformation {
-        internal const string Version = "2.6.0.0";
+        internal const string Version = "2.6.1.0";
     }
 }