chore: Remove minor Sonar findings

src/Testcontainers/Builders/AbstractBuilder`4.cs

@@ -26,13 +26,12 @@ public abstract class AbstractBuilder<TBuilderEntity, TResourceEntity, TCreateRe
     protected AbstractBuilder(TConfigurationEntity dockerResourceConfiguration)
     {
       _ = TestcontainersSettings.SettingsInitialized.WaitOne(TimeSpan.FromSeconds(5));
-      DockerResourceConfiguration = dockerResourceConfiguration;
     }
 
     /// <summary>
     /// Gets the Docker resource configuration.
     /// </summary>
-    protected virtual TConfigurationEntity DockerResourceConfiguration { get; }
+    protected abstract TConfigurationEntity DockerResourceConfiguration { get; }
 
     /// <inheritdoc cref="IAbstractBuilder{TBuilderEntity, TContainerEntity, TCreateResourceEntity}" />
     public TBuilderEntity WithDockerEndpoint(string endpoint)

src/Testcontainers/Containers/PortForwarding.cs

@@ -1,7 +1,5 @@
 namespace DotNet.Testcontainers.Containers
 {
-  using System.Collections.Generic;
-  using System.Globalization;
   using System.Linq;
   using System.Net;
   using System.Threading.Tasks;
@@ -97,26 +95,6 @@ private PortForwardingBuilder(PortForwardingConfiguration resourceConfiguration)
       /// <inheritdoc />
       protected override PortForwardingConfiguration DockerResourceConfiguration { get; }
 
-      /// <summary>
-      /// Exposes the host ports using SSH port forwarding.
-      /// </summary>
-      /// <param name="ports">The host ports to forward.</param>
-      /// <returns>A configured instance of <see cref="PortForwardingBuilder" />.</returns>
-      public PortForwardingBuilder WithExposedHostPort(params int[] ports)
-      {
-        return WithExposedHostPort(ports.Select(port => port.ToString(CultureInfo.InvariantCulture)).ToArray());
-      }
-
-      /// <summary>
-      /// Exposes the host ports to containers in the same network.
-      /// </summary>
-      /// <param name="exposedHostPorts">The host ports.</param>
-      /// <returns>A configured instance of <see cref="PortForwardingBuilder" />.</returns>
-      public PortForwardingBuilder WithExposedHostPort(params string[] exposedHostPorts)
-      {
-        return Merge(DockerResourceConfiguration, new PortForwardingConfiguration(exposedHostPorts: exposedHostPorts));
-      }
-
       /// <inheritdoc />
       public override PortForwardingContainer Build()
       {
@@ -187,15 +165,12 @@ public sealed class PortForwardingConfiguration : ContainerConfiguration
       /// </summary>
       /// <param name="username">The OpenSSH daemon username.</param>
       /// <param name="password">The OpenSSH daemon password.</param>
-      /// <param name="exposedHostPorts">A list of exposed host ports.</param>
       public PortForwardingConfiguration(
         string username = null,
-        string password = null,
-        IEnumerable<string> exposedHostPorts = null)
+        string password = null)
       {
         Username = username;
         Password = password;
-        ExposedHostPorts = exposedHostPorts;
       }
 
       /// <summary>
@@ -238,7 +213,6 @@ public PortForwardingConfiguration(PortForwardingConfiguration oldValue, PortFor
       {
         Username = BuildConfiguration.Combine(oldValue.Username, newValue.Username);
         Password = BuildConfiguration.Combine(oldValue.Password, newValue.Password);
-        ExposedHostPorts = BuildConfiguration.Combine(oldValue.ExposedHostPorts, newValue.ExposedHostPorts);
       }
 
       /// <summary>
@@ -250,11 +224,6 @@ public PortForwardingConfiguration(PortForwardingConfiguration oldValue, PortFor
       /// Gets the OpenSSH daemon password.
       /// </summary>
       public string Password { get; }
-
-      /// <summary>
-      /// Gets a list of exposed host ports.
-      /// </summary>
-      public IEnumerable<string> ExposedHostPorts { get; }
     }
   }
 }

tests/Testcontainers.Platform.Linux.Tests/PortForwardingTest.cs

@@ -67,9 +67,9 @@ public PortForwardingNetworkConfiguration(HostedService fixture)
     [UsedImplicitly]
     public sealed class HostedService : IAsyncLifetime
     {
-        private readonly CancellationTokenSource _cancellationTokenSource = new();
+        private readonly CancellationTokenSource _cancellationTokenSource = new CancellationTokenSource();
 
-        private readonly TcpListener _tcpListener = new(new IPEndPoint(IPAddress.Any, 0));
+        private readonly TcpListener _tcpListener = new TcpListener(new IPEndPoint(IPAddress.Any, 0));
 
         public HostedService()
         {