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using Microsoft.Extensions.DependencyInjection;
using NUnit.Framework;
using Opc.Ua.Client.AliasNames;
using Opc.Ua.Client.FileSystem;
using Opc.Ua.Client.Historian;
using Opc.Ua.Client.Roles;

namespace Opc.Ua.Client.Tests.ClientBuilder
{
    /// <summary>
    /// Patch-coverage tests for <see cref="OpcUaSubClientBuilderExtensions"/>.
    /// Exercises the null guards on the <c>IOpcUaBuilder</c> overloads and
    /// the happy-path of each <c>IOpcUaClientBuilder</c> overload (both paths
    /// are new in this PR and not yet reached by sibling fixtures).
    /// </summary>
    [TestFixture]
    [Category("Client")]
    [SetCulture("en-us")]
    [SetUICulture("en-us")]
    [Parallelizable]
    public sealed class OpcUaSubClientBuilderExtensionsCoverageTests
    {
        [Test]
        public void AddHistorianOnBuilderNullBuilderThrows()
        {
            Assert.That(
                () => ((IOpcUaBuilder)null!).AddHistorian(),
                Throws.ArgumentNullException);
        }

        [Test]
        public void AddHistorianOnClientBuilderRegistersFactory()
        {
            var services = new ServiceCollection();
            IOpcUaClientBuilder builder = services.AddOpcUa().AddClient(_ => { });

            builder.AddHistorian();

            using ServiceProvider sp = services.BuildServiceProvider();
            Assert.That(sp.GetService<HistoryClientFactory>(), Is.Not.Null);
        }

        [Test]
        public void AddRoleManagementOnBuilderNullBuilderThrows()
        {
            Assert.That(
                () => ((IOpcUaBuilder)null!).AddRoleManagement(),
                Throws.ArgumentNullException);
        }

        [Test]
        public void AddRoleManagementOnClientBuilderRegistersFactory()
        {
            var services = new ServiceCollection();
            IOpcUaClientBuilder builder = services.AddOpcUa().AddClient(_ => { });

            builder.AddRoleManagement();

            using ServiceProvider sp = services.BuildServiceProvider();
            Assert.That(sp.GetService<RoleManagementClientFactory>(), Is.Not.Null);
        }

        [Test]
        public void AddFileTransferOnBuilderNullBuilderThrows()
        {
            Assert.That(
                () => ((IOpcUaBuilder)null!).AddFileTransfer(),
                Throws.ArgumentNullException);
        }

        [Test]
        public void AddFileTransferOnClientBuilderRegistersFactory()
        {
            var services = new ServiceCollection();
            IOpcUaClientBuilder builder = services.AddOpcUa().AddClient(_ => { });

            builder.AddFileTransfer();

            using ServiceProvider sp = services.BuildServiceProvider();
            Assert.That(sp.GetService<FileTransferClientFactory>(), Is.Not.Null);
        }

        [Test]
        public void AddAliasNamesOnBuilderNullBuilderThrows()
        {
            Assert.That(
                () => ((IOpcUaBuilder)null!).AddAliasNames(),
                Throws.ArgumentNullException);
        }

        [Test]
        public void AddAliasNamesOnClientBuilderRegistersFactory()
        {
            var services = new ServiceCollection();
            IOpcUaClientBuilder builder = services.AddOpcUa().AddClient(_ => { });

            builder.AddAliasNames();

            using ServiceProvider sp = services.BuildServiceProvider();
            Assert.That(sp.GetService<AliasNameClientFactory>(), Is.Not.Null);
        }
    }
}