diff --git a/Octokit.Tests/Octokit.Tests.csproj b/Octokit.Tests/Octokit.Tests.csproj
index 5c6484c3..cb994ec6 100644
--- a/Octokit.Tests/Octokit.Tests.csproj
+++ b/Octokit.Tests/Octokit.Tests.csproj
@@ -198,6 +198,7 @@
     <Compile Include="Reactive\Enterprise\ObservableEnterpriseSearchIndexingClientTests.cs" />
     <Compile Include="Reactive\Enterprise\ObservableEnterpriseOrganizationClientTests.cs" />
     <Compile Include="Reactive\Enterprise\ObservableEnterpriseLicenseClientTests.cs" />
+    <Compile Include="Reactive\ObservableAuthorizationsClientTests.cs" />
     <Compile Include="Reactive\ObservableBlobClientTests.cs" />
     <Compile Include="Reactive\ObservableCommitsClientTests.cs" />
     <Compile Include="Reactive\ObservableDeploymentsClientTests.cs" />
diff --git a/Octokit.Tests/Reactive/ObservableAuthorizationsClientTests.cs b/Octokit.Tests/Reactive/ObservableAuthorizationsClientTests.cs
new file mode 100644
index 00000000..5aa84daf
--- /dev/null
+++ b/Octokit.Tests/Reactive/ObservableAuthorizationsClientTests.cs
@@ -0,0 +1,48 @@
+using System;
+using System.Collections.Generic;
+using NSubstitute;
+using Octokit.Reactive;
+using Xunit;
+
+namespace Octokit.Tests.Reactive
+{
+    public class ObservableAuthorizationsClientTests
+    {
+        public class TheGetAllMethod
+        {
+            [Fact]
+            public void GetsCorrectUrl()
+            {
+                var client = Substitute.For<IGitHubClient>();
+                var authEndpoint = new ObservableAuthorizationsClient(client);
+
+                authEndpoint.GetAll();
+
+                client.Connection.Received(1).Get<List<Authorization>>(Arg.Is<Uri>(u => u.ToString() == "authorizations"),
+                    Arg.Is<Dictionary<string, string>>(dictionary => dictionary.Count == 0), null);
+            }
+
+            [Fact]
+            public void GetsCorrectUrlWithApiOption()
+            {
+                var client = Substitute.For<IGitHubClient>();
+                var authEndpoint = new ObservableAuthorizationsClient(client);
+
+                authEndpoint.GetAll(ApiOptions.None);
+
+                client.Connection.Received(1).Get<List<Authorization>>(Arg.Is<Uri>(u => u.ToString() == "authorizations"),
+                    Arg.Is<Dictionary<string, string>>(dictionary => dictionary.Count == 0), null);
+            }
+        }
+
+        public class TheCtor
+        {
+            [Fact]
+            public void EnsuresNonNullArguments()
+            {
+                Assert.Throws<ArgumentNullException>(
+                    () => new ObservableAuthorizationsClient(null));
+            }
+        }
+    }
+}