Campaign_Tracker/Campaign_Tracker.Server.Tests/DotEnvConfigurationTests.cs

using Campaign_Tracker.Server.Configuration;
using Microsoft.Extensions.Configuration;

namespace Campaign_Tracker.Server.Tests;

public sealed class DotEnvConfigurationTests : IDisposable
{
    private readonly string _rootPath;
    private readonly string _serverPath;

    public DotEnvConfigurationTests()
    {
        _rootPath = Path.Combine(Path.GetTempPath(), $"campaign-tracker-env-{Guid.NewGuid():N}");
        _serverPath = Path.Combine(_rootPath, "Campaign_Tracker.Server");
        Directory.CreateDirectory(_serverPath);
    }

    [Fact]
    public void Load_OverridesAppsettingsPlaceholderWithRootEnvValue()
    {
        File.WriteAllText(
            Path.Combine(_rootPath, ".env"),
            "Keycloak__ClientSecret=secret-from-env");
        var configuration = new ConfigurationManager();
        configuration.AddInMemoryCollection(new Dictionary<string, string?>
        {
            ["Keycloak:ClientSecret"] = "REPLACE-ON-SERVER",
        });

        DotEnvConfiguration.Load(configuration, _serverPath);

        Assert.Equal("secret-from-env", configuration["Keycloak:ClientSecret"]);
    }

    public void Dispose()
    {
        if (Directory.Exists(_rootPath))
        {
            Directory.Delete(_rootPath, recursive: true);
        }
    }
}