dotnet/src/webdriver/SessionId.cs

// <copyright file="SessionId.cs" company="Selenium Committers">
// Licensed to the Software Freedom Conservancy (SFC) under one
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// regarding copyright ownership.  The SFC licenses this file
// to you under the Apache License, Version 2.0 (the
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// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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using System;

namespace OpenQA.Selenium;

/// <summary>
/// Provides a mechanism for maintaining a session for a test
/// </summary>
public class SessionId : IEquatable<SessionId>
{
    private readonly string sessionOpaqueKey;

    /// <summary>
    /// Initializes a new instance of the <see cref="SessionId"/> class
    /// </summary>
    /// <param name="opaqueKey">Key for the session in use</param>
    /// <exception cref="ArgumentNullException">If <paramref name="opaqueKey"/> is <see langword="null"/>.</exception>
    public SessionId(string opaqueKey)
    {
        this.sessionOpaqueKey = opaqueKey ?? throw new ArgumentNullException(nameof(opaqueKey));
    }

    /// <summary>
    /// Get the value of the key
    /// </summary>
    /// <returns>The key in use</returns>
    public override string ToString()
    {
        return this.sessionOpaqueKey;
    }

    /// <summary>
    /// Get the hash code of the key
    /// </summary>
    /// <returns>The hash code of the key</returns>
    public override int GetHashCode()
    {
        return this.sessionOpaqueKey.GetHashCode();
    }

    /// <summary>
    /// Indicates whether the current session ID value is the same as <paramref name="obj"/>.
    /// </summary>
    /// <param name="obj">The session to compare to.</param>
    /// <returns><see langword="true"/> if the values are equal; otherwise, <see langword="false"/>.</returns>
    public override bool Equals(object? obj)
    {
        return Equals(obj as SessionId);
    }

    /// <summary>
    /// Indicates whether the current session ID value is the same as <paramref name="other"/>.
    /// </summary>
    /// <param name="other">The session to compare to.</param>
    /// <returns><see langword="true"/> if the values are equal; otherwise, <see langword="false"/>.</returns>
    public bool Equals(SessionId? other)
    {
        return other is not null && string.Equals(this.sessionOpaqueKey, other.sessionOpaqueKey);
    }
}