Use local secret store for tests instead of hand-made solution

.gitignore

@@ -21,6 +21,3 @@ bld/
 
 # Coverage
 *.opencover.xml
-
-# Secrets
-*.secret

DiscordChatExporter.Cli.Tests/DiscordChatExporter.Cli.Tests.csproj

@@ -1,8 +1,9 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <IsPackable>false</IsPackable>
     <IsTestProject>true</IsTestProject>
+    <UserSecretsId>d1fe5ae2-2a19-404d-a36e-81ba9eada1c1</UserSecretsId>
   </PropertyGroup>
 
   <ItemGroup>
@@ -15,6 +16,9 @@
     <PackageReference Include="FluentAssertions" Version="6.9.0" />
     <PackageReference Include="GitHubActionsTestLogger" Version="2.0.1" PrivateAssets="all" />
     <PackageReference Include="JsonExtensions" Version="1.2.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration" Version="7.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="7.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="7.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
     <PackageReference Include="System.Reactive" Version="5.0.0" />
     <PackageReference Include="xunit" Version="2.4.2" />

DiscordChatExporter.Cli.Tests/Infra/Secrets.cs

@@ -1,26 +1,17 @@
 using System;
-using System.IO;
+using System.Reflection;
+using Microsoft.Extensions.Configuration;
 
 namespace DiscordChatExporter.Cli.Tests.Infra;
 
 internal static class Secrets
 {
-    private static readonly Lazy<string> DiscordTokenLazy = new(() =>
-    {
-        var fromEnvironment = Environment.GetEnvironmentVariable("DISCORD_TOKEN");
-        if (!string.IsNullOrWhiteSpace(fromEnvironment))
-            return fromEnvironment;
-
-        var secretFilePath = Path.Combine(
-            Path.GetDirectoryName(typeof(Secrets).Assembly.Location) ?? Directory.GetCurrentDirectory(),
-            "DiscordToken.secret"
-        );
-
-        if (File.Exists(secretFilePath))
-            return File.ReadAllText(secretFilePath);
+    private static readonly IConfigurationRoot Configuration = new ConfigurationBuilder()
+        .AddUserSecrets(Assembly.GetExecutingAssembly())
+        .AddEnvironmentVariables()
+        .Build();
 
+    public static string DiscordToken =>
+        Configuration["DISCORD_TOKEN"] ??
         throw new InvalidOperationException("Discord token not provided for tests.");
-    });
-
-    public static string DiscordToken => DiscordTokenLazy.Value;
 }

DiscordChatExporter.Cli.Tests/Readme.md

@@ -5,9 +5,8 @@ In order to run these tests locally, you need to join the test server and config
 
 1. [Join the test server](https://discord.gg/eRV8Vap5bm)
 2. Locate your Discord authentication token
-3. Specify your token using a file or an environment variable:
-    - **Using a file**: put your token in a new `DiscordToken.secret` file created in this directory
-    - **Using an environment variable**: set `DISCORD_TOKEN` variable to your token
+3. Add your token to user secrets: `dotnet user-secrets set DISCORD_TOKEN <token>`
 4. Run the tests: `dotnet test`
 
-> If you want to add a new test case, please let me know and I will give you the required permissions
+> **Note**:
+> If you want to add a new test case, please let me know and I will give you the required permissions on the server.