Added readonly to fields that are never modified (#2759)

Co-authored-by: Lehonti Ramos <john@doe> Co-authored-by: Keegan Campbell <me@kfcampbell.com>
2025-12-06 07:16:09 +00:00 · 2023-08-11 18:53:51 +02:00
parent 6ab43b2d41
commit d46527d143
29 changed files with 166 additions and 166 deletions
--- a/Octokit.Reactive/Clients/ObservableGitHubAppInstallationsClient.cs
+++ b/Octokit.Reactive/Clients/ObservableGitHubAppInstallationsClient.cs
@@ -11,7 +11,7 @@ namespace Octokit.Reactive
    /// </remarks>
    public class ObservableGitHubAppInstallationsClient : IObservableGitHubAppInstallationsClient
    {
-        private IGitHubAppInstallationsClient _client;
+        private readonly IGitHubAppInstallationsClient _client;
        private readonly IConnection _connection;

        public ObservableGitHubAppInstallationsClient(IGitHubClient client)
--- a/Octokit.Reactive/Clients/ObservableGitHubAppsClient.cs
+++ b/Octokit.Reactive/Clients/ObservableGitHubAppsClient.cs
@@ -12,7 +12,7 @@ namespace Octokit.Reactive
    /// </remarks>
    public class ObservableGitHubAppsClient : IObservableGitHubAppsClient
    {
-        private IGitHubAppsClient _client;
+        private readonly IGitHubAppsClient _client;
        private readonly IConnection _connection;

        public ObservableGitHubAppsClient(IGitHubClient client)
--- a/Octokit.Reactive/ObservableCodespacesClient.cs
+++ b/Octokit.Reactive/ObservableCodespacesClient.cs
@@ -5,8 +5,8 @@ namespace Octokit.Reactive
 {
    public class ObservableCodespacesClient : IObservableCodespacesClient
    {
-        private ICodespacesClient _client;
-        private IConnection _connection;
+        private readonly ICodespacesClient _client;
+        private readonly IConnection _connection;

        public ObservableCodespacesClient(IGitHubClient githubClient)
        {
--- a/Octokit.Tests.Integration/Clients/CheckRunsClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/CheckRunsClientTests.cs
@@ -10,8 +10,8 @@ namespace Octokit.Tests.Integration.Clients
    {
        public class TheCreateMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheCreateMethod()
            {
@@ -68,8 +68,8 @@ namespace Octokit.Tests.Integration.Clients

        public class TheUpdateMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheUpdateMethod()
            {
@@ -146,8 +146,8 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetAllForReferenceMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheGetAllForReferenceMethod()
            {
@@ -230,8 +230,8 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetAllForCheckSuiteMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheGetAllForCheckSuiteMethod()
            {
@@ -315,8 +315,8 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheGetMethod()
            {
@@ -383,8 +383,8 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetAllAnnotationsMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheGetAllAnnotationsMethod()
            {
--- a/Octokit.Tests.Integration/Clients/CheckSuitesClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/CheckSuitesClientTests.cs
@@ -9,8 +9,8 @@ namespace Octokit.Tests.Integration.Clients
    {
        public class TheGetMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheGetMethod()
            {
@@ -59,8 +59,8 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetAllForReferenceMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheGetAllForReferenceMethod()
            {
@@ -107,8 +107,8 @@ namespace Octokit.Tests.Integration.Clients

        public class TheUpdatePreferencesMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheUpdatePreferencesMethod()
            {
@@ -155,8 +155,8 @@ namespace Octokit.Tests.Integration.Clients

        public class TheCreateMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheCreateMethod()
            {
@@ -215,8 +215,8 @@ namespace Octokit.Tests.Integration.Clients

        public class TheRerequestMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheRerequestMethod()
            {
--- a/Octokit.Tests.Integration/Clients/GitHubAppInstallationsClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/GitHubAppInstallationsClientTests.cs
@@ -8,7 +8,7 @@ namespace Octokit.Tests.Clients
    {
        public class TheGetAllRepositoriesForCurrentMethod
        {
-            IGitHubClient _github;
+            readonly IGitHubClient _github;

            public TheGetAllRepositoriesForCurrentMethod()
            {
@@ -28,7 +28,7 @@ namespace Octokit.Tests.Clients

        public class TheGetAllRepositoriesForCurrentUserMethod
        {
-            IGitHubClient _github;
+            readonly IGitHubClient _github;

            public TheGetAllRepositoriesForCurrentUserMethod()
            {
--- a/Octokit.Tests.Integration/Clients/GitHubAppsClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/GitHubAppsClientTests.cs
@@ -9,7 +9,7 @@ namespace Octokit.Tests.Integration.Clients
    {
        public class TheGetMethod
        {
-            IGitHubClient _github;
+            readonly IGitHubClient _github;

            public TheGetMethod()
            {
@@ -31,7 +31,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetCurrentMethod
        {
-            IGitHubClient _github;
+            readonly IGitHubClient _github;

            public TheGetCurrentMethod()
            {
@@ -53,7 +53,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetAllInstallationsForCurrentMethod
        {
-            IGitHubClient _github;
+            readonly IGitHubClient _github;

            public TheGetAllInstallationsForCurrentMethod()
            {
@@ -80,7 +80,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetInstallationForCurrentMethod
        {
-            IGitHubClient _github;
+            readonly IGitHubClient _github;

            public TheGetInstallationForCurrentMethod()
            {
@@ -109,7 +109,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetAllInstallationsForCurrentUserMethod
        {
-            IGitHubClient _github;
+            readonly IGitHubClient _github;

            public TheGetAllInstallationsForCurrentUserMethod()
            {
@@ -130,7 +130,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheCreateInstallationTokenMethod
        {
-            IGitHubClient _github;
+            readonly IGitHubClient _github;

            public TheCreateInstallationTokenMethod()
            {
@@ -154,7 +154,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetOrganizationInstallationForCurrentMethod
        {
-            IGitHubClient _github;
+            readonly IGitHubClient _github;

            public TheGetOrganizationInstallationForCurrentMethod()
            {
@@ -173,8 +173,8 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetRepositoryInstallationForCurrentMethod
        {
-            IGitHubClient _github;
-            IGitHubClient _githubAppInstallation;
+            readonly IGitHubClient _github;
+            readonly IGitHubClient _githubAppInstallation;

            public TheGetRepositoryInstallationForCurrentMethod()
            {
@@ -214,7 +214,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetUserInstallationForCurrentMethod
        {
-            IGitHubClient _github;
+            readonly IGitHubClient _github;

            public TheGetUserInstallationForCurrentMethod()
            {
--- a/Octokit.Tests.Integration/Clients/MigrationsClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/MigrationsClientTests.cs
@@ -11,9 +11,9 @@ using Xunit;
 public class MigrationsClientTests : IDisposable
 {
    private readonly IGitHubClient _gitHub;
-    private List<RepositoryContext> _repos;
+    private readonly List<RepositoryContext> _repos;
    private Migration _migrationContext;
-    private string _orgName;
+    private readonly string _orgName;
    private bool isExported = false;

    public MigrationsClientTests()
--- a/Octokit.Tests.Integration/Clients/OrganizationMembersClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/OrganizationMembersClientTests.cs
@@ -9,8 +9,8 @@ namespace Octokit.Tests.Integration.Clients
    {
        public class TheGetAllMethod
        {
-            private IGitHubClient _gitHub;
-            private string _organizationFixture;
+            private readonly IGitHubClient _gitHub;
+            private readonly string _organizationFixture;

            public TheGetAllMethod()
            {
@@ -296,7 +296,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetAllOrganizationMembershipsForCurrentMethod
        {
-            private IGitHubClient _gitHub;
+            private readonly IGitHubClient _gitHub;

            public TheGetAllOrganizationMembershipsForCurrentMethod()
            {
--- a/Octokit.Tests.Integration/Clients/ProjectCardsClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/ProjectCardsClientTests.cs
@@ -9,8 +9,8 @@ public class ProjectCardsClientTests
 {
    public class TheGetAllMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetAllMethod()
        {
@@ -164,8 +164,8 @@ public class ProjectCardsClientTests

    public class TheGetMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetMethod()
        {
@@ -196,8 +196,8 @@ public class ProjectCardsClientTests

    public class TheCreateMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheCreateMethod()
        {
@@ -252,8 +252,8 @@ public class ProjectCardsClientTests

    public class TheUpdateMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheUpdateMethod()
        {
@@ -325,8 +325,8 @@ public class ProjectCardsClientTests

    public class TheDeleteMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheDeleteMethod()
        {
@@ -357,8 +357,8 @@ public class ProjectCardsClientTests

    public class TheMoveMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheMoveMethod()
        {
--- a/Octokit.Tests.Integration/Clients/ProjectColumnsClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/ProjectColumnsClientTests.cs
@@ -11,8 +11,8 @@ public class ProjectColumnsClientTests
 {
    public class TheGetAllColumnsMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetAllColumnsMethod()
        {
@@ -111,8 +111,8 @@ public class ProjectColumnsClientTests

    public class TheGetColumnMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetColumnMethod()
        {
@@ -142,8 +142,8 @@ public class ProjectColumnsClientTests

    public class TheCreateColumnMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheCreateColumnMethod()
        {
@@ -171,8 +171,8 @@ public class ProjectColumnsClientTests

    public class TheUpdateColumnMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheUpdateColumnMethod()
        {
@@ -205,8 +205,8 @@ public class ProjectColumnsClientTests

    public class TheDeleteColumnMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheDeleteColumnMethod()
        {
@@ -236,8 +236,8 @@ public class ProjectColumnsClientTests

    public class TheMoveColumnMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheMoveColumnMethod()
        {
--- a/Octokit.Tests.Integration/Clients/ProjectsClientTests.cs
+++ b/Octokit.Tests.Integration/Clients/ProjectsClientTests.cs
@@ -11,8 +11,8 @@ public class ProjectsClientTests
 {
    public class TheGetAllForRepositoryMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetAllForRepositoryMethod()
        {
@@ -213,7 +213,7 @@ public class ProjectsClientTests

    public class TheGetAllForOrganizationMethod
    {
-        IGitHubClient _github;
+        readonly IGitHubClient _github;

        public TheGetAllForOrganizationMethod()
        {
@@ -286,8 +286,8 @@ public class ProjectsClientTests

    public class TheGetMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetMethod()
        {
@@ -317,8 +317,8 @@ public class ProjectsClientTests

    public class TheUpdateMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheUpdateMethod()
        {
@@ -355,8 +355,8 @@ public class ProjectsClientTests

    public class TheDeleteMethod : IDisposable
    {
-        IGitHubClient _github;
-        RepositoryContext _context;
+        readonly IGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheDeleteMethod()
        {
--- a/Octokit.Tests.Integration/Helpers/EnterpriseUserContext.cs
+++ b/Octokit.Tests.Integration/Helpers/EnterpriseUserContext.cs
@@ -17,7 +17,7 @@ namespace Octokit.Tests.Integration.Helpers
            UserEmail = user.Email;
        }

-        private IConnection _connection;
+        private readonly IConnection _connection;
        internal int UserId { get; private set; }
        internal string UserLogin { get; private set; }
        internal string UserEmail { get; private set; }
--- a/Octokit.Tests.Integration/Helpers/GpgKeyContext.cs
+++ b/Octokit.Tests.Integration/Helpers/GpgKeyContext.cs
@@ -17,7 +17,7 @@ namespace Octokit.Tests.Integration.Helpers
            PublicKeyData = key.PublicKey;
        }

-        private IConnection _connection;
+        private readonly IConnection _connection;
        internal int GpgKeyId { get; set; }
        internal string KeyId { get; set; }
        internal string PublicKeyData { get; set; }
--- a/Octokit.Tests.Integration/Helpers/MaintenanceModeContext.cs
+++ b/Octokit.Tests.Integration/Helpers/MaintenanceModeContext.cs
@@ -17,7 +17,7 @@ namespace Octokit.Tests.Integration.Helpers
            EnterpriseHelper.SetMaintenanceMode(_connection, enabled);
        }

-        private IConnection _connection;
+        private readonly IConnection _connection;

        public void Dispose()
        {
--- a/Octokit.Tests.Integration/Helpers/PublicKeyContext.cs
+++ b/Octokit.Tests.Integration/Helpers/PublicKeyContext.cs
@@ -17,7 +17,7 @@ namespace Octokit.Tests.Integration.Helpers
            KeyData = key.Key;
        }

-        private IConnection _connection;
+        private readonly IConnection _connection;
        internal int KeyId { get; private set; }
        internal string KeyTitle { get; private set; }
        internal string KeyData { get; private set; }
--- a/Octokit.Tests.Integration/Helpers/RepositoryContext.cs
+++ b/Octokit.Tests.Integration/Helpers/RepositoryContext.cs
@@ -19,7 +19,7 @@ namespace Octokit.Tests.Integration.Helpers
            RepositoryDefaultBranch = repo.DefaultBranch;
        }

-        private IConnection _connection;
+        private readonly IConnection _connection;
        internal long RepositoryId { get; private set; }
        internal string RepositoryOwner { get; private set; }
        internal string RepositoryName { get; private set; }
--- a/Octokit.Tests.Integration/Helpers/TeamContext.cs
+++ b/Octokit.Tests.Integration/Helpers/TeamContext.cs
@@ -15,7 +15,7 @@ namespace Octokit.Tests.Integration.Helpers
            Invitations = new List<string>();
        }

-        private IConnection _connection;
+        private readonly IConnection _connection;
        internal int TeamId { get; private set; }
        internal string TeamName { get; private set; }

--- a/Octokit.Tests.Integration/Reactive/ObservableCheckRunsClientTests.cs
+++ b/Octokit.Tests.Integration/Reactive/ObservableCheckRunsClientTests.cs
@@ -12,8 +12,8 @@ namespace Octokit.Tests.Integration.Reactive
    {
        public class TheCreateMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheCreateMethod()
            {
@@ -70,8 +70,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheUpdateMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheUpdateMethod()
            {
@@ -148,8 +148,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheGetAllForReferenceMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheGetAllForReferenceMethod()
            {
@@ -232,8 +232,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheGetAllForCheckSuiteMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheGetAllForCheckSuiteMethod()
            {
@@ -316,8 +316,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheGetMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheGetMethod()
            {
@@ -384,8 +384,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheGetAllAnnotationsMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheGetAllAnnotationsMethod()
            {
--- a/Octokit.Tests.Integration/Reactive/ObservableCheckSuitesClientTests.cs
+++ b/Octokit.Tests.Integration/Reactive/ObservableCheckSuitesClientTests.cs
@@ -11,8 +11,8 @@ namespace Octokit.Tests.Integration.Reactive
    {
        public class TheGetMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheGetMethod()
            {
@@ -61,8 +61,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheGetAllForReferenceMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheGetAllForReferenceMethod()
            {
@@ -109,8 +109,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheUpdatePreferencesMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheUpdatePreferencesMethod()
            {
@@ -157,8 +157,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheCreateMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheCreateMethod()
            {
@@ -217,8 +217,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheRerequestMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheRerequestMethod()
            {
--- a/Octokit.Tests.Integration/Reactive/ObservableGitHubAppInstallationsClientTests.cs
+++ b/Octokit.Tests.Integration/Reactive/ObservableGitHubAppInstallationsClientTests.cs
@@ -10,7 +10,7 @@ namespace Octokit.Tests.Clients
    {
        public class TheGetAllRepositoriesForCurrentMethod
        {
-            IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _github;

            public TheGetAllRepositoriesForCurrentMethod()
            {
@@ -30,7 +30,7 @@ namespace Octokit.Tests.Clients

        public class TheGetAllRepositoriesForCurrentUserMethod
        {
-            IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _github;

            public TheGetAllRepositoriesForCurrentUserMethod()
            {
--- a/Octokit.Tests.Integration/Reactive/ObservableGitHubAppsClientTests.cs
+++ b/Octokit.Tests.Integration/Reactive/ObservableGitHubAppsClientTests.cs
@@ -11,7 +11,7 @@ namespace Octokit.Tests.Integration.Clients
    {
        public class TheGetMethod
        {
-            IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _github;

            public TheGetMethod()
            {
@@ -33,7 +33,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetCurrentMethod
        {
-            IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _github;

            public TheGetCurrentMethod()
            {
@@ -55,7 +55,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetAllInstallationsForCurrentMethod
        {
-            IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _github;

            public TheGetAllInstallationsForCurrentMethod()
            {
@@ -82,7 +82,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetInstallationForCurrentMethod
        {
-            IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _github;

            public TheGetInstallationForCurrentMethod()
            {
@@ -111,7 +111,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetAllInstallationsForCurrentUserMethod
        {
-            IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _github;

            public TheGetAllInstallationsForCurrentUserMethod()
            {
@@ -132,7 +132,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheCreateInstallationTokenMethod
        {
-            IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _github;

            public TheCreateInstallationTokenMethod()
            {
@@ -156,7 +156,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetOrganizationInstallationForCurrentMethod
        {
-            IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _github;

            public TheGetOrganizationInstallationForCurrentMethod()
            {
@@ -175,8 +175,8 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetRepositoryInstallationForCurrentMethod
        {
-            IObservableGitHubClient _github;
-            IObservableGitHubClient _githubAppInstallation;
+            readonly IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _githubAppInstallation;

            public TheGetRepositoryInstallationForCurrentMethod()
            {
@@ -216,7 +216,7 @@ namespace Octokit.Tests.Integration.Clients

        public class TheGetUserInstallationForCurrentMethod
        {
-            IObservableGitHubClient _github;
+            readonly IObservableGitHubClient _github;

            public TheGetUserInstallationForCurrentMethod()
            {
--- a/Octokit.Tests.Integration/Reactive/ObservableProjectCardsClientTests.cs
+++ b/Octokit.Tests.Integration/Reactive/ObservableProjectCardsClientTests.cs
@@ -12,8 +12,8 @@ public class ObservableProjectCardsClientTests
 {
    public class TheGetAllMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetAllMethod()
        {
@@ -167,8 +167,8 @@ public class ObservableProjectCardsClientTests

    public class TheGetMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetMethod()
        {
@@ -199,8 +199,8 @@ public class ObservableProjectCardsClientTests

    public class TheCreateMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheCreateMethod()
        {
@@ -240,8 +240,8 @@ public class ObservableProjectCardsClientTests

    public class TheUpdateMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheUpdateMethod()
        {
@@ -313,8 +313,8 @@ public class ObservableProjectCardsClientTests

    public class TheDeleteMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheDeleteMethod()
        {
@@ -345,8 +345,8 @@ public class ObservableProjectCardsClientTests

    public class TheMoveMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheMoveMethod()
        {
--- a/Octokit.Tests.Integration/Reactive/ObservableProjectColumnsClientTests.cs
+++ b/Octokit.Tests.Integration/Reactive/ObservableProjectColumnsClientTests.cs
@@ -13,8 +13,8 @@ public class ObservableProjectColumnsClientTests
 {
    public class TheGetAllColumnsMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetAllColumnsMethod()
        {
@@ -113,8 +113,8 @@ public class ObservableProjectColumnsClientTests

    public class TheGetColumnMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetColumnMethod()
        {
@@ -144,8 +144,8 @@ public class ObservableProjectColumnsClientTests

    public class TheCreateColumnMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheCreateColumnMethod()
        {
@@ -173,8 +173,8 @@ public class ObservableProjectColumnsClientTests

    public class TheUpdateColumnMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheUpdateColumnMethod()
        {
@@ -207,8 +207,8 @@ public class ObservableProjectColumnsClientTests

    public class TheDeleteColumnMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheDeleteColumnMethod()
        {
@@ -238,8 +238,8 @@ public class ObservableProjectColumnsClientTests

    public class TheMoveColumnMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheMoveColumnMethod()
        {
--- a/Octokit.Tests.Integration/Reactive/ObservableProjectsClientTests.cs
+++ b/Octokit.Tests.Integration/Reactive/ObservableProjectsClientTests.cs
@@ -13,8 +13,8 @@ public class ObservableProjectsClientTests
 {
    public class TheGetAllForRepositoryMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetAllForRepositoryMethod()
        {
@@ -215,7 +215,7 @@ public class ObservableProjectsClientTests

    public class TheGetAllForOrganizationMethod
    {
-        IObservableGitHubClient _github;
+        readonly IObservableGitHubClient _github;

        public TheGetAllForOrganizationMethod()
        {
@@ -288,8 +288,8 @@ public class ObservableProjectsClientTests

    public class TheGetMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheGetMethod()
        {
@@ -319,8 +319,8 @@ public class ObservableProjectsClientTests

    public class TheUpdateMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheUpdateMethod()
        {
@@ -357,8 +357,8 @@ public class ObservableProjectsClientTests

    public class TheDeleteMethod : IDisposable
    {
-        IObservableGitHubClient _github;
-        RepositoryContext _context;
+        readonly IObservableGitHubClient _github;
+        readonly RepositoryContext _context;

        public TheDeleteMethod()
        {
--- a/Octokit.Tests.Integration/Reactive/ObservableRepositoryBranchesClientTests.cs
+++ b/Octokit.Tests.Integration/Reactive/ObservableRepositoryBranchesClientTests.cs
@@ -10,8 +10,8 @@ namespace Octokit.Tests.Integration.Reactive
    {
        public class TheGetBranchProtectionMethod
        {
-            IGitHubClient _github;
-            IObservableRepositoryBranchesClient _client;
+            readonly IGitHubClient _github;
+            readonly IObservableRepositoryBranchesClient _client;

            public TheGetBranchProtectionMethod()
            {
@@ -116,8 +116,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheUpdateBranchProtectionMethod
        {
-            IGitHubClient _github;
-            IObservableRepositoryBranchesClient _client;
+            readonly IGitHubClient _github;
+            readonly IObservableRepositoryBranchesClient _client;

            public TheUpdateBranchProtectionMethod()
            {
@@ -262,8 +262,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheDeleteBranchProtectionMethod
        {
-            IGitHubClient _github;
-            IObservableRepositoryBranchesClient _client;
+            readonly IGitHubClient _github;
+            readonly IObservableRepositoryBranchesClient _client;

            public TheDeleteBranchProtectionMethod()
            {
@@ -324,8 +324,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheGetReviewEnforcementMethod
        {
-            IGitHubClient _github;
-            IObservableRepositoryBranchesClient _client;
+            readonly IGitHubClient _github;
+            readonly IObservableRepositoryBranchesClient _client;

            public TheGetReviewEnforcementMethod()
            {
@@ -396,8 +396,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheUpdateReviewEnforcementMethod
        {
-            IGitHubClient _github;
-            IObservableRepositoryBranchesClient _client;
+            readonly IGitHubClient _github;
+            readonly IObservableRepositoryBranchesClient _client;

            public TheUpdateReviewEnforcementMethod()
            {
@@ -530,8 +530,8 @@ namespace Octokit.Tests.Integration.Reactive

        public class TheRemoveReviewEnforcementMethod
        {
-            IGitHubClient _github;
-            IObservableRepositoryBranchesClient _client;
+            readonly IGitHubClient _github;
+            readonly IObservableRepositoryBranchesClient _client;

            public TheRemoveReviewEnforcementMethod()
            {
--- a/Octokit.Tests.Integration/Reactive/ObservableRepositoryDeployKeysClientTests.cs
+++ b/Octokit.Tests.Integration/Reactive/ObservableRepositoryDeployKeysClientTests.cs
@@ -10,9 +10,9 @@ public class ObservableRespositoryDeployKeysClientTests : IDisposable
 {
    const string _key = "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDB8IE5+RppLpeW+6lqo0fpfvMunKg6W4bhYCfVJIOYbpKoHP95nTUMZPBT++9NLeB4/YsuNTCrrpnpjc4f2IVpGvloRiVXjAzoJk9QIL6uzn1zRFdvaxSJ3Urhe9LcLHcIgccgZgSdWGzaZI3xtMvGC4diwWNsPjvVc/RyDM/MPqAim0X5XVOQwEFsSsUSraezJ+VgYMYzLYBcKWW0B86HVVhL4ZtmcY/RN2544bljnzw2M3aQvXNPTvkuiUoqLOI+5/qzZ8PfkruO55YtweEd0lkY6oZvrBPMD6dLODEqMHb4tD6htx60wSipNqjPwpOMpzp0Bk3G909unVXi6Fw5";
    const string _keyTitle = "octokit@github";
-    ObservableRepositoryDeployKeysClient _client;
-    Repository _repository;
-    string _owner;
+    readonly ObservableRepositoryDeployKeysClient _client;
+    readonly Repository _repository;
+    readonly string _owner;

    public ObservableRespositoryDeployKeysClientTests()
    {
--- a/Octokit/Http/SimpleJsonSerializer.cs
+++ b/Octokit/Http/SimpleJsonSerializer.cs
@@ -35,7 +35,7 @@ namespace Octokit.Internal
        class GitHubSerializerStrategy : PocoJsonSerializerStrategy
        {
            readonly List<string> _membersWhichShouldPublishNull = new List<string>();
-            ConcurrentDictionary<Type, ConcurrentDictionary<object, object>> _cachedEnums = new ConcurrentDictionary<Type, ConcurrentDictionary<object, object>>();
+            readonly ConcurrentDictionary<Type, ConcurrentDictionary<object, object>> _cachedEnums = new ConcurrentDictionary<Type, ConcurrentDictionary<object, object>>();

            protected override string MapClrMemberToJsonFieldName(MemberInfo member)
            {
--- a/Octokit/Models/Request/ApiOptions.cs
+++ b/Octokit/Models/Request/ApiOptions.cs
@@ -7,7 +7,7 @@ namespace Octokit
    [DebuggerDisplay("{DebuggerDisplay,nq}")]
    public class ApiOptions
    {
-        private static ApiOptions emptyOptions = new ApiOptions();
+        private static readonly ApiOptions emptyOptions = new ApiOptions();

        public static ApiOptions None
        {