Source: PageSetContentTests.cs 
/*
* MIT License
*
* Copyright (c) Microsoft Corporation.
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using System;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Playwright.NUnit;
using NUnit.Framework;
namespace Microsoft.Playwright.Tests
{
public class PageSetContentTests : PageTestEx
{
const string _expectedOutput = "<html><head></head><body><div>hello</div></body></html>";
/// <inheritdoc />
[PlaywrightTest("page-set-content.spec.ts", "should work")]
public async Task ShouldWork()
{
await Page.SetContentAsync("<div>hello</div>");
string result = await Page.ContentAsync();
Assert.AreEqual(_expectedOutput, result);
}
[PlaywrightTest("page-set-content.spec.ts", "should work with domcontentloaded")]
public async Task ShouldWorkWithDomcontentloaded()
{
await Page.SetContentAsync("<div>hello</div>", new() { WaitUntil = WaitUntilState.DOMContentLoaded });
string result = await Page.ContentAsync();
Assert.AreEqual(_expectedOutput, result);
}
[PlaywrightTest("page-set-content.spec.ts", "should work with doctype")]
public async Task ShouldWorkWithDoctype()
{
string doctype = "<!DOCTYPE html>";
await Page.SetContentAsync($"{doctype}<div>hello</div>");
string result = await Page.ContentAsync();
Assert.AreEqual($"{doctype}{_expectedOutput}", result);
}
[PlaywrightTest("page-set-content.spec.ts", "should work with HTML 4 doctype")]
public async Task ShouldWorkWithHTML4Doctype()
{
string doctype = "<!DOCTYPE html PUBLIC \" -//W3C//DTD HTML 4.01//EN\" \"http://www.w3.org/TR/html4/strict.dtd\">";
await Page.SetContentAsync($"{doctype}<div>hello</div>");
string result = await Page.ContentAsync();
Assert.AreEqual($"{doctype}{_expectedOutput}", result);
}
[PlaywrightTest("page-set-content.spec.ts", "should respect timeout")]
public Task ShouldRespectTimeout()
{
string imgPath = "/img.png";
// stall for image
Server.SetRoute(imgPath, _ => Task.Delay(Timeout.Infinite));
return PlaywrightAssert.ThrowsAsync<TimeoutException>(() =>
Page.SetContentAsync($"<img src=\"{Server.Prefix + imgPath}\"></img>", new() { Timeout = 1 })
);
}
[PlaywrightTest("page-set-content.spec.ts", "should respect default navigation timeout")]
public async Task ShouldRespectDefaultNavigationTimeout()
{
Page.SetDefaultNavigationTimeout(1);
string imgPath = "/img.png";
// stall for image
Server.SetRoute(imgPath, _ => Task.Delay(Timeout.Infinite));
var exception = await PlaywrightAssert.ThrowsAsync<TimeoutException>(() =>
Page.SetContentAsync($"<img src=\"{Server.Prefix + imgPath}\"></img>", new() { Timeout = 1 })
);
StringAssert.Contains("Timeout 1ms exceeded", exception.Message);
}
[PlaywrightTest("page-set-content.spec.ts", "should await resources to load")]
public async Task ShouldAwaitResourcesToLoad()
{
string imgPath = "/img.png";
var imgResponse = new TaskCompletionSource<bool>();
Server.SetRoute(imgPath, _ => imgResponse.Task);
bool loaded = false;
var contentTask = Page.SetContentAsync($"<img src=\"{Server.Prefix + imgPath}\"></img>").ContinueWith(_ => loaded = true);
await Server.WaitForRequest(imgPath);
Assert.False(loaded);
imgResponse.SetResult(true);
await contentTask;
}
[PlaywrightTest("page-set-content.spec.ts", "should work fast enough")]
public async Task ShouldWorkFastEnough()
{
for (int i = 0; i < 20; ++i)
{
await Page.SetContentAsync("<div>yo</div>");
}
}
[PlaywrightTest("page-set-content.spec.ts", "should work with tricky content")]
public async Task ShouldWorkWithTrickyContent()
{
await Page.SetContentAsync("<div>hello world</div>" + "\x7F");
Assert.AreEqual("hello world", await Page.EvalOnSelectorAsync<string>("div", "div => div.textContent"));
}
[PlaywrightTest("page-set-content.spec.ts", "should work with accents")]
public async Task ShouldWorkWithAccents()
{
await Page.SetContentAsync("<div>aberración</div>");
Assert.AreEqual("aberración", await Page.EvalOnSelectorAsync<string>("div", "div => div.textContent"));
}
[PlaywrightTest("page-set-content.spec.ts", "should work with emojis")]
public async Task ShouldWorkWithEmojis()
{
await Page.SetContentAsync("<div>ð¥</div>");
Assert.AreEqual("ð¥", await Page.EvalOnSelectorAsync<string>("div", "div => div.textContent"));
}
[PlaywrightTest("page-set-content.spec.ts", "should work with newline")]
public async Task ShouldWorkWithNewline()
{
await Page.SetContentAsync("<div>\n</div>");
Assert.AreEqual("\n", await Page.EvalOnSelectorAsync<string>("div", "div => div.textContent"));
}
}
}
