namespace Prefab.Test;

/// <summary>
/// Used for determining whether the system is under test or not.
/// </summary>
public static class Detector
{
    /// <summary>
    /// Static constructor for the Detector class.
    /// </summary>
    /// <returns>
    /// None.
    /// </returns>
    static Detector()
    {
        var testAssemblyNames = new[]
        {
            "Microsoft.TestPlatform",
            "xunit.core",
            "xunit.assert",
            "xunit.extensibility.core",
            "xunit.extensibility.execution",
            "nunit.framework"
        };

        SystemIsUnderTest = AppDomain.CurrentDomain.GetAssemblies()
            .Any(a => testAssemblyNames.Any(t => a.FullName != null && a.FullName.StartsWith(t)));
    }

    /// <summary>
    /// Gets a value indicating whether the code is currently running in a test.
    /// </summary>
    /// <returns>true if the code is running in a test; otherwise, false.</returns>
    public static bool SystemIsUnderTest { get; }
}