Add unit test for ReadOnlyPagedCollection

Octokit.Tests/Models/ReadOnlyPagedCollectionTests.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using NSubstitute;
+using Octokit.Internal;
+using Xunit;
+
+namespace Octokit.Tests.Models
+{
+    public class ReadOnlyPagedCollectionTests
+    {
+        public class TheGetNextPageMethod
+        {
+            [Fact]
+            public async Task ReturnsTheNextPage()
+            {
+                var nextPageUrl = new Uri("https://example.com/page/2");
+                var nextPageResponse = Task.Factory.StartNew<IResponse<List<object>>>(() =>
+                    new ApiResponse<List<object>> {BodyAsObject = new List<object> {new object(), new object()}});
+                var links = new Dictionary<string, Uri> {{"next", nextPageUrl}};
+                var scopes = new List<string>();
+
+                var response = new ApiResponse<List<object>>
+                {
+                    BodyAsObject = new List<object>(),
+                    ApiInfo = new ApiInfo(links, scopes, scopes, "etag", 100, 100)
+                };
+                var connection = Substitute.For<IConnection>();
+                connection.GetAsync<List<object>>(nextPageUrl, null, null).Returns(nextPageResponse);
+                var pagedCollection = new ReadOnlyPagedCollection<object>(response, connection);
+
+                var nextPage = await pagedCollection.GetNextPage();
+
+                Assert.NotNull(nextPage);
+                Assert.Equal(2, nextPage.Count);
+            }
+        }
+    }
+}

Octokit.Tests/Octokit.Tests.csproj

@@ -84,6 +84,7 @@
     <Compile Include="Http\ResponseTests.cs" />
     <Compile Include="Http\RequestTests.cs" />
     <Compile Include="Models\ModelExtensionsTests.cs" />
+    <Compile Include="Models\ReadOnlyPagedCollectionTests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Helpers\StringExtensionsTests.cs" />
     <Compile Include="Clients\RepositoriesClientTests.cs" />