using Opc.Ua;
using ZB.MOM.WW.ScadaBridge.DataConnectionLayer.Adapters;
namespace ZB.MOM.WW.ScadaBridge.DataConnectionLayer.Tests.Adapters;
public class OpcUaSecurityDowngradeTests
{
    /// <summary>Verifies that DC4: requested protection never falls back to none.</summary>
    /// <param name="discoveryFails">The discovery fails.</param>
    [Theory]
    [InlineData(false)]
    [InlineData(true)]
    public void DC4_RequestedProtectionNeverFallsBackToNone(bool discoveryFails)
    {
        Assert.Throws<InvalidOperationException>(() => RealOpcUaClient.DiscoverEndpoint("opc.tcp://test:4840",
            MessageSecurityMode.SignAndEncrypt, () => discoveryFails
                ? throw new Exception("discovery unavailable")
                : new EndpointDescriptionCollection { new("opc.tcp://test:4840") { SecurityMode = MessageSecurityMode.None } }));
    }
    /// <summary>Verifies that DC4: exact requested mode is selected.</summary>
    [Fact]
    public void DC4_ExactRequestedModeIsSelected()
    {
        var encrypted = new EndpointDescription("opc.tcp://test:4840") { SecurityMode = MessageSecurityMode.SignAndEncrypt };
        Assert.Same(encrypted, RealOpcUaClient.DiscoverEndpoint("opc.tcp://test:4840", MessageSecurityMode.SignAndEncrypt,
            () => new EndpointDescriptionCollection { new("opc.tcp://test:4840"), encrypted }));
    }
}