dotnet/src/webdriver/Support/SystemClock.cs

// <copyright file="SystemClock.cs" company="Selenium Committers">
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//
//   http://www.apache.org/licenses/LICENSE-2.0
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using System;

namespace OpenQA.Selenium.Support.UI;

/// <summary>
/// Uses the system clock to calculate time for timeouts.
/// </summary>
public class SystemClock : IClock
{
    /// <summary>
    /// An instance of the <see cref="SystemClock"/> type.
    /// </summary>
    public static SystemClock Instance { get; } = new();

    /// <summary>
    /// Gets the current date and time values.
    /// </summary>
    public DateTime Now => DateTime.Now;

    /// <summary>
    /// Calculates the date and time values after a specific delay.
    /// </summary>
    /// <param name="delay">The delay after to calculate.</param>
    /// <returns>The future date and time values.</returns>
    public DateTime LaterBy(TimeSpan delay) => DateTime.Now.Add(delay);

    /// <summary>
    /// Gets a value indicating whether the current date and time is before the specified date and time.
    /// </summary>
    /// <param name="otherDateTime">The date and time values to compare the current date and time values to.</param>
    /// <returns><see langword="true"/> if the current date and time is before the specified date and time; otherwise, <see langword="false"/>.</returns>
    public bool IsNowBefore(DateTime otherDateTime) => DateTime.Now < otherDateTime;
}