using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;

namespace ZB.MOM.WW.ScadaBridge.DataConnectionLayer.Tests;

public class GlobalOptionsValidationTests
{
    /// <summary>Verifies that startup rejects blank identity.</summary>
    /// <param name="key">Test case input.</param>
    [Theory]
    [InlineData("ScadaBridge:OpcUa:ApplicationName")]
    [InlineData("ScadaBridge:MxGateway:ClientNamePrefix")]
    public void StartupRejectsBlankIdentity(string key)
    {
        var services = new ServiceCollection();
        services.AddSingleton<IConfiguration>(new ConfigurationBuilder().AddInMemoryCollection(
            new Dictionary<string, string?> { [key] = " " }).Build());
        services.AddDataConnectionLayer();
        using var provider = services.BuildServiceProvider();
        var exception = Assert.Throws<OptionsValidationException>(() => provider.GetRequiredService<IStartupValidator>().Validate());
        Assert.Contains(key, exception.Message);
    }

    /// <summary>Verifies that defaults validate at startup.</summary>
    [Fact]
    public void DefaultsValidateAtStartup()
    {
        var services = new ServiceCollection();
        services.AddSingleton<IConfiguration>(new ConfigurationBuilder().Build());
        services.AddDataConnectionLayer();
        using var provider = services.BuildServiceProvider();
        provider.GetRequiredService<IStartupValidator>().Validate();
    }
}