BrowsingContextEventsTest.cs

// <copyright file="BrowsingContextEventsTest.cs" company="Selenium Committers">
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using System;
using System.Threading.Tasks;
using NUnit.Framework;

namespace OpenQA.Selenium.BiDi.BrowsingContext;

internal class BrowsingContextEventsTest : BiDiTestFixture
{
    [Test]
    public async Task CanListenDownloadWillBeginEvent()
    {
        await context.NavigateAsync(UrlBuilder.WhereIs("downloads/download.html"), new() { Wait = ReadinessState.Complete });

        TaskCompletionSource<DownloadWillBeginEventArgs> tcs = new();

        await using var subscription = await context.OnDownloadWillBeginAsync(tcs.SetResult);

        driver.FindElement(By.Id("file-1")).Click();

        var eventArgs = await tcs.Task.WaitAsync(TimeSpan.FromSeconds(5));

        Assert.That(eventArgs, Is.Not.Null);
        Assert.That(eventArgs.Context, Is.EqualTo(context));
        Assert.That(eventArgs.Url, Does.EndWith("downloads/file_1.txt"));
        Assert.That(eventArgs.SuggestedFilename, Does.Contain("file_1")); // Avoid incremental prefix
    }

    [Test]
    public async Task CanListenDownloadEndEvent()
    {
        await context.NavigateAsync(UrlBuilder.WhereIs("downloads/download.html"), new() { Wait = ReadinessState.Complete });

        TaskCompletionSource<DownloadEndEventArgs> tcs = new();

        await using var subscription = await context.OnDownloadEndAsync(tcs.SetResult);

        driver.FindElement(By.Id("file-1")).Click();

        var eventArgs = await tcs.Task.WaitAsync(TimeSpan.FromSeconds(5));

        Assert.That(eventArgs, Is.Not.Null);
        Assert.That(eventArgs.Context, Is.EqualTo(context));
        Assert.That(eventArgs, Is.TypeOf<DownloadCompleteEventArgs>());
        Assert.That(((DownloadCompleteEventArgs)eventArgs).Filepath, Is.Not.Empty);
    }
}