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How to use Expect method of Microsoft.Playwright.Assertions class

Best Playwright-dotnet code snippet using Microsoft.Playwright.Assertions.Expect

LocatorAssertionsTests.cs

Source:LocatorAssertionsTests.cs

...33        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toBeChecked")]34        public async Task ShouldSupportToBeChecked()35        {36            await Page.SetContentAsync("<input type=checkbox checked></input>");37            await Expect(Page.Locator("input")).ToBeCheckedAsync();38            await Expect(Page.Locator("input")).ToBeCheckedAsync(new() { Checked = true });39            await Expect(Page.Locator("input")).Not.ToBeCheckedAsync(new() { Checked = false });40            var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(Page.Locator("input")).ToBeCheckedAsync(new() { Checked = false, Timeout = 300 }));41            StringAssert.Contains("Locator expected not to be checked", exception.Message);42            StringAssert.Contains("LocatorAssertions.ToBeCheckedAsync with timeout 300ms", exception.Message);43            exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(Page.Locator("input")).Not.ToBeCheckedAsync(new() { Timeout = 300 }));44            StringAssert.Contains("Locator expected not to be checked", exception.Message);45            StringAssert.Contains("LocatorAssertions.ToBeCheckedAsync with timeout 300ms", exception.Message);46        }47        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toBeEditable, toBeEnabled, toBeDisabled, toBeEmpty")]48        public async Task ShouldSupportToBeEditableToBeEnabledToBeDisabledToBeEmpty()49        {50            {51                await Page.SetContentAsync("<input></input>");52                await Expect(Page.Locator("input")).ToBeEditableAsync();53            }54            {55                await Page.SetContentAsync("<button>Text</button>");56                await Expect(Page.Locator("button")).ToBeEnabledAsync();57            }58            {59                await Page.SetContentAsync("<button disabled>Text</button>");60                var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(Page.Locator("button")).ToBeEnabledAsync(new() { Timeout = 500 }));61                StringAssert.Contains("Locator expected to be enabled", exception.Message);62                StringAssert.Contains("LocatorAssertions.ToBeEnabledAsync with timeout 500ms", exception.Message);63            }64            {65                await Page.SetContentAsync("<button disabled>Text</button>");66                var locator = Page.Locator("button");67                await locator.EvaluateAsync("e => setTimeout(() => { e.removeAttribute('disabled') }, 500);");68                await Expect(locator).ToBeEnabledAsync();69            }70            {71                await Page.SetContentAsync("<button>Text</button>");72                var locator = Page.Locator("button");73                await locator.EvaluateAsync("e => setTimeout(() => { e.setAttribute('disabled', '') }, 500);");74                await Expect(locator).Not.ToBeEnabledAsync();75            }76            {77                await Page.SetContentAsync("<button disabled>Text</button>");78                var locator = Page.Locator("button");79                await Expect(locator).ToBeDisabledAsync();80            }81            {82                await Page.SetContentAsync("<input></input>");83                var locator = Page.Locator("input");84                await Expect(locator).ToBeEmptyAsync();85            }86            {87                await Page.SetContentAsync("<input value=text></input>");88                var locator = Page.Locator("input");89                await Expect(locator).Not.ToBeEmptyAsync();90            }91        }92        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toBeVisible, toBeHidden")]93        public async Task ShouldSupportToBeVisibleToBeHidden()94        {95            {96                await Page.SetContentAsync("<input></input>");97                var locator = Page.Locator("input");98                await Expect(locator).ToBeVisibleAsync();99            }100            {101                await Page.SetContentAsync("<button style=\"display: none\"></button>");102                var locator = Page.Locator("button");103                await Expect(locator).Not.ToBeVisibleAsync();104            }105            {106                await Page.SetContentAsync("<button style=\"display: none\"></button>");107                var locator = Page.Locator("button");108                await Expect(locator).ToBeHiddenAsync();109            }110            {111                await Page.SetContentAsync("<div></div>");112                var locator = Page.Locator("div");113                await Expect(locator).ToBeHiddenAsync();114            }115            {116                await Page.SetContentAsync("<input></input>");117                var locator = Page.Locator("input");118                await Expect(locator).Not.ToBeHiddenAsync();119            }120        }121        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toBeVisible, toBeHidden fail")]122        public async Task ShouldSupportToBeVisibleToBeHiddenFail()123        {124            {125                await Page.SetContentAsync("<button style=\"display: none\"></button>");126                var locator = Page.Locator("button");127                var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(locator).ToBeVisibleAsync(new() { Timeout = 500 }));128                StringAssert.Contains("Locator expected to be visible", exception.Message);129                StringAssert.Contains("LocatorAssertions.ToBeVisibleAsync with timeout 500ms", exception.Message);130            }131            {132                await Page.SetContentAsync("<input></input>");133                var locator = Page.Locator("input");134                var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(locator).Not.ToBeVisibleAsync(new() { Timeout = 500 }));135                StringAssert.Contains("Locator expected not to be visible", exception.Message);136                StringAssert.Contains("LocatorAssertions.ToBeVisibleAsync with timeout 500ms", exception.Message);137            }138        }139        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toBeFocused")]140        public async Task ShouldSupportToBeFocused()141        {142            await Page.SetContentAsync("<input></input>");143            var locator = Page.Locator("input");144            await locator.FocusAsync();145            await Expect(locator).ToBeFocusedAsync();146        }147        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toContainText")]148        public async Task ShouldSupportToContainText()149        {150            {151                await Page.SetContentAsync("<div id=node>Text   content</div>");152                await Expect(Page.Locator("#node")).ToContainTextAsync(new Regex("ex"));153                // Should not normalize whitespace.154                await Expect(Page.Locator("#node")).ToContainTextAsync(new Regex("ext   cont"));155            }156            {157                await Page.SetContentAsync("<div id=node>Text content</div>");158                var exeption = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(Page.Locator("#node")).ToContainTextAsync(new Regex("ex2"), new() { Timeout = 100 }));159                StringAssert.Contains("Locator expected text matching regex 'ex2'", exeption.Message);160                StringAssert.Contains("But was: 'Text content'", exeption.Message);161                StringAssert.Contains("LocatorAssertions.ToContainTextAsync with timeout 100ms", exeption.Message);162            }163            {164                await Page.SetContentAsync("<div id=node><span></span>Text \ncontent&nbsp;    </div>");165                var locator = Page.Locator("#node");166                // Should normalize whitespace.167                await Expect(locator).ToHaveTextAsync("Text                        content");168                // Should normalize zero width whitespace.169                await Expect(locator).ToHaveTextAsync("T\u200be\u200bx\u200bt content");170                await Expect(locator).ToHaveTextAsync(new Regex("Text\\s+content"));171            }172            {173                await Page.SetContentAsync("<div id=node>Text content</div>");174                var locator = Page.Locator("#node");175                await Expect(locator).ToContainTextAsync("Text");176                // Should normalize whitespace.177                await Expect(locator).ToContainTextAsync("   ext        cont\n  ");178            }179            {180                await Page.SetContentAsync("<div id=node>Text content</div>");181                var locator = Page.Locator("#node");182                var exeption = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(locator).ToHaveTextAsync("Text", new() { Timeout = 100 }));183                StringAssert.Contains("Locator expected to have text 'Text'", exeption.Message);184                StringAssert.Contains("But was: 'Text content'", exeption.Message);185                StringAssert.Contains("LocatorAssertions.ToHaveTextAsync with timeout 100ms", exeption.Message);186            }187        }188        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toContainText w/ array")]189        public async Task ShouldSupportToContainTextWithArray()190        {191            await Page.SetContentAsync("<div>Text \n1</div><div>Text2</div><div>Text3</div>");192            var locator = Page.Locator("div");193            await Expect(locator).ToContainTextAsync(new string[] { "ext     1", "ext3" });194            await Expect(locator).ToContainTextAsync(new Regex[] { new Regex("ext \\s+1"), new Regex("ext3") });195        }196        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toHaveText w/ array")]197        public async Task ShouldSupportToHaveTextWithArray()198        {199            await Page.SetContentAsync("<div>Text    \n1</div><div>Text   2a</div>");200            var locator = Page.Locator("div");201            // Should normalize whitespace.202            await Expect(locator).ToHaveTextAsync(new string[] { "Text  1", "Text 2a" });203            // But not for Regex.204            await Expect(locator).ToHaveTextAsync(new Regex[] { new Regex("Text \\s+1"), new Regex("Text   \\d+a") });205        }206        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toHaveAttribute")]207        public async Task ShouldSupportToHaveAttribute()208        {209            await Page.SetContentAsync("<div id=node>Text content</div>");210            var locator = Page.Locator("#node");211            await Expect(locator).ToHaveAttributeAsync("id", "node");212            await Expect(locator).ToHaveAttributeAsync("id", new Regex("node"));213        }214        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toHaveCSS")]215        public async Task ShouldSupportToHaveCSS()216        {217            await Page.SetContentAsync("<div id=node style=\"color: rgb(255, 0, 0)\">Text content</div>");218            var locator = Page.Locator("#node");219            await Expect(locator).ToHaveCSSAsync("color", "rgb(255, 0, 0)");220            await Expect(locator).ToHaveCSSAsync("color", new Regex("rgb\\(\\d+, 0, 0\\)"));221        }222        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toHaveClass")]223        public async Task ShouldSupportToHaveClass()224        {225            {226                await Page.SetContentAsync("<div class=\"foo bar baz\"></div>");227                var locator = Page.Locator("div");228                await Expect(locator).ToHaveClassAsync("foo bar baz");229                await Expect(locator).ToHaveClassAsync(new Regex("foo bar baz"));230                var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(locator).ToHaveClassAsync("kektus", new() { Timeout = 300 }));231                StringAssert.Contains("Locator expected to have class 'kektus'", exception.Message);232                StringAssert.Contains("But was: 'foo bar baz'", exception.Message);233                StringAssert.Contains("LocatorAssertions.ToHaveClassAsync with timeout 300ms", exception.Message);234            }235            {236                await Page.SetContentAsync("<div class=\"foo\"></div><div class=\"bar\"></div><div class=\"baz\"></div>");237                var locator = Page.Locator("div");238                await Expect(locator).ToHaveClassAsync(new string[] { "foo", "bar", "baz" });239                await Expect(locator).ToHaveClassAsync(new Regex[] { new("^f.o$"), new("^b.r$"), new("^[a-z]az$") });240            }241        }242        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toHaveCount")]243        public async Task ShouldSupportToHaveCount()244        {245            await Page.SetContentAsync("<select><option>One</option></select>");246            var locator = Page.Locator("option");247            await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(locator).ToHaveCountAsync(2, new() { Timeout = 300 }));248            await Page.SetContentAsync("<select><option>One</option><option>Two</option></select>");249            await Expect(locator).ToHaveCountAsync(2);250        }251        [PlaywrightTest("playwright-test/playwright.expect.spec.ts", "should support toHaveId")]252        public async Task ShouldSupportToHaveId()253        {254            await Page.SetContentAsync("<div id=node>Text content</div>");255            var locator = Page.Locator("#node");256            await Expect(locator).ToHaveIdAsync("node");257            await Expect(locator).ToHaveIdAsync(new Regex("n.de"));258        }259        [PlaywrightTest("playwright-test/playwright.expect.misc.spec.ts", "should support toHaveJSProperty")]260        public async Task ShouldSupportToHaveJSProperty()261        {262            await Page.SetContentAsync("<div></div>");263            await Page.EvalOnSelectorAsync("div", "e => e.foo = { a: 1, b: 'string', c: new Date(1627503992000) }");264            var locator = Page.Locator("div");265            await Expect(locator).ToHaveJSPropertyAsync("foo", new Dictionary<string, object>266            {267                ["a"] = 1,268                ["b"] = "string",269                ["c"] = DateTime.Parse("2021-07-28T20:26:32.000Z"),270            });271        }272        [PlaywrightTest("playwright-test/playwright.expect.misc.spec.ts", "should support toHaveValue")]273        public async Task ShouldSupportToHaveValue()274        {275            {276                await Page.SetContentAsync("<input id=node></input>");277                var locator = Page.Locator("#node");278                await locator.FillAsync("Text content");279                await Expect(locator).ToHaveValueAsync("Text content");280                await Expect(locator).ToHaveValueAsync(new Regex("Text( |)content"));281            }282            {283                await Page.SetContentAsync("<label><input></input></label>");284                await Page.Locator("label input").FillAsync("Text content");285                await Expect(Page.Locator("label")).ToHaveValueAsync("Text content");286            }287        }288    }289}...

AssertionsBase.cs

Source:AssertionsBase.cs

...38            IsNot = isNot;39        }40        protected bool IsNot { get; private set; }41        internal Locator ActualLocator { get; private set; }42        internal async Task ExpectImplAsync(string expression, ExpectedTextValue textValue, object expected, string message, FrameExpectOptions options)43        {44            await ExpectImplAsync(expression, new ExpectedTextValue[] { textValue }, expected, message, options).ConfigureAwait(false);45        }46        internal async Task ExpectImplAsync(string expression, ExpectedTextValue[] expectedText, object expected, string message, FrameExpectOptions options)47        {48            options = options ?? new();49            options.ExpectedText = expectedText;50            options.IsNot = IsNot;51            await ExpectImplAsync(expression, options, expected, message).ConfigureAwait(false);52        }53        internal async Task ExpectImplAsync(string expression, FrameExpectOptions expectOptions, object expected, string message)54        {55            if (expectOptions.Timeout == null)56            {57                expectOptions.Timeout = 5_000;58            }59            if (expectOptions.IsNot)60            {61                message = message.Replace("expected to", "expected not to");62            }63            var result = await ActualLocator.ExpectAsync(expression, expectOptions).ConfigureAwait(false);64            if (result.Matches == IsNot)65            {66                var actual = result.Received;67                var log = string.Join("\n", result.Log);68                if (!string.IsNullOrEmpty(log))69                {70                    log = "\nCall log:\n" + log;71                }72                if (expected == null)73                {74                    throw new PlaywrightException($"{message} {log}");75                }76                throw new PlaywrightException($"{message} '{FormatValue(expected)}'\nBut was: '{FormatValue(actual)}' {log}");77            }78        }79        internal ExpectedTextValue ExpectedRegex(Regex pattern, ExpectedTextValue options = null)80        {81            if (pattern == null)82            {83                throw new ArgumentNullException(nameof(pattern));84            }85            ExpectedTextValue textValue = options ?? new() { };86            textValue.RegexSource = pattern.ToString();87            textValue.RegexFlags = pattern.Options.GetInlineFlags();88            return textValue;89        }90        internal T ConvertToType<T>(object source)91            where T : new()92        {93            T target = new();94            if (source == null)95            {96                return target;97            }98            var sourceType = source.GetType();99            var targetType = target.GetType();100            foreach (var sourceProperty in sourceType.GetProperties())101            {102                var targetProperty = targetType.GetProperty(sourceProperty.Name);103                if (targetProperty != null)104                {105                    targetProperty.SetValue(target, sourceProperty.GetValue(source));106                }107            }108            return target;109        }110        internal FrameExpectOptions ConvertToFrameExpectOptions(object source) => ConvertToType<FrameExpectOptions>(source);111        private string FormatValue(object value)112        {113            if (value == null)114            {115                return "null";116            }117            if (value is string)118            {119                return (string)value;120            }121            if (value is IEnumerable<object>)122            {123                return "[" + string.Join(", ", ((IEnumerable<object>)value).Select(value => $"'{value}'")) + "]";124            }...

IPageAssertions.cs

Source:IPageAssertions.cs

...39    /// <summary>40    /// <para>41    /// The <see cref="IPageAssertions"/> class provides assertion methods that can be used42    /// to make assertions about the <see cref="IPage"/> state in the tests. A new instance43    /// of <see cref="IPageAssertions"/> is created by calling <see cref="IPlaywrightAssertions.Expect"/>:44    /// </para>45    /// <code>46    /// using System.Text.RegularExpressions;<br/>47    /// using System.Threading.Tasks;<br/>48    /// using Microsoft.Playwright.NUnit;<br/>49    /// using NUnit.Framework;<br/>50    /// <br/>51    /// namespace PlaywrightTests<br/>52    /// {<br/>53    ///     public class ExampleTests : PageTest<br/>54    ///     {<br/>55    ///         [Test]<br/>56    ///         public async Task NavigatetoLoginPage()<br/>57    ///         {<br/>58    ///             // ..<br/>59    ///             await Page.ClickAsync("#login");<br/>60    ///             await Expect(Page.Locator("div#foobar")).ToHaveURL(new Regex(".*/login"));<br/>61    ///         }<br/>62    ///     }<br/>63    /// }64    /// </code>65    /// </summary>66    public partial interface IPageAssertions67    {68        /// <summary>69        /// <para>70        /// Makes the assertion check for the opposite condition. For example, this code tests71        /// that the page URL doesn't contain <c>"error"</c>:72        /// </para>73        /// <code>await Expect(page).Not.ToHaveURL("error");</code>74        /// </summary>75        public IPageAssertions Not { get; }76        /// <summary>77        /// <para>Ensures the page has the given title.</para>78        /// <code>await Expect(page).ToHaveTitle("Playwright");</code>79        /// </summary>80        /// <param name="titleOrRegExp">Expected title or RegExp.</param>81        /// <param name="options">Call options</param>82        Task ToHaveTitleAsync(string titleOrRegExp, PageAssertionsToHaveTitleOptions? options = default);83        /// <summary>84        /// <para>Ensures the page has the given title.</para>85        /// <code>await Expect(page).ToHaveTitle("Playwright");</code>86        /// </summary>87        /// <param name="titleOrRegExp">Expected title or RegExp.</param>88        /// <param name="options">Call options</param>89        Task ToHaveTitleAsync(Regex titleOrRegExp, PageAssertionsToHaveTitleOptions? options = default);90        /// <summary>91        /// <para>Ensures the page is navigated to the given URL.</para>92        /// <code>await Expect(page).ToHaveURL(new Regex(".*checkout"));</code>93        /// </summary>94        /// <param name="urlOrRegExp">Expected substring or RegExp.</param>95        /// <param name="options">Call options</param>96        Task ToHaveURLAsync(string urlOrRegExp, PageAssertionsToHaveURLOptions? options = default);97        /// <summary>98        /// <para>Ensures the page is navigated to the given URL.</para>99        /// <code>await Expect(page).ToHaveURL(new Regex(".*checkout"));</code>100        /// </summary>101        /// <param name="urlOrRegExp">Expected substring or RegExp.</param>102        /// <param name="options">Call options</param>103        Task ToHaveURLAsync(Regex urlOrRegExp, PageAssertionsToHaveURLOptions? options = default);104    }105}106#nullable disable

PageAssertionsTests.cs

Source:PageAssertionsTests.cs

...31        [PlaywrightTest("playwright-test/playwright.expect.misc.spec.ts", "should support toHaveTitle")]32        public async Task ShouldSupportToHaveTitleAsync()33        {34            await Page.SetContentAsync("<title>  Hello     world</title>");35            await Expect(Page).ToHaveTitleAsync("Hello  world");36            await Page.SetContentAsync("<title>Bye</title>");37            var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(Page).ToHaveTitleAsync("Hello", new() { Timeout = 100 }));38            StringAssert.Contains("Page title expected to be 'Hello'", exception.Message);39            StringAssert.Contains("But was: 'Bye'", exception.Message);40            StringAssert.Contains("PageAssertions.ToHaveTitleAsync with timeout 100ms", exception.Message);41            await Page.SetContentAsync("<title>Foo Bar Kek</title>");42            await Expect(Page).ToHaveTitleAsync(new Regex("^Foo .* Kek$"));43            await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(Page).ToHaveTitleAsync(new Regex("nooo"), new() { Timeout = 100 }));44            await Page.SetContentAsync("<title>Bye</title>");45            await Expect(Page).Not.ToHaveTitleAsync("Hello");46        }47        [PlaywrightTest("playwright-test/playwright.expect.misc.spec.ts", "should support toHaveURL")]48        public async Task ShouldSupportToHaveURLAsync()49        {50            await Page.GotoAsync("data:text/html,<div>A</div>");51            await Expect(Page).ToHaveURLAsync("data:text/html,<div>A</div>");52            await Page.GotoAsync("data:text/html,<div>B</div>");53            var exception = await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(Page).ToHaveURLAsync("wrong", new() { Timeout = 100 }));54            StringAssert.Contains("Page URL expected to be 'wrong'", exception.Message);55            StringAssert.Contains("But was: 'data:text/html,<div>B</div>'", exception.Message);56            StringAssert.Contains("PageAssertions.ToHaveURLAsync with timeout 100ms", exception.Message);57            await Page.GotoAsync(Server.EmptyPage);58            await Expect(Page).ToHaveURLAsync(new Regex(".*empty.html"));59            await PlaywrightAssert.ThrowsAsync<PlaywrightException>(() => Expect(Page).ToHaveURLAsync(new Regex("nooo"), new() { Timeout = 100 }));60            await Page.GotoAsync(Server.EmptyPage);61            await Expect(Page).ToHaveURLAsync(Server.Prefix + "/empty.html");62            await Expect(Page).Not.ToHaveURLAsync(Server.Prefix + "/foobar.html");63            var page = await Browser.NewPageAsync(new() { BaseURL = Server.Prefix });64            try65            {66                await page.GotoAsync("/empty.html");67                await Expect(page).ToHaveURLAsync("/empty.html");68                await Expect(page).Not.ToHaveURLAsync("/kek.html");69            }70            finally71            {72                await page.CloseAsync();73            }74        }75    }76}...

IPlaywrightAssertions.cs

Source:IPlaywrightAssertions.cs

...53    ///     {<br/>54    ///         [Test]<br/>55    ///         public async Task StatusBecomesSubmitted()<br/>56    ///         {<br/>57    ///             await Expect(Page.Locator(".status")).ToHaveTextAsync("Submitted");<br/>58    ///         }<br/>59    ///     }<br/>60    /// }61    /// </code>62    /// <para>63    /// Playwright will be re-testing the node with the selector <c>.status</c> until fetched64    /// Node has the <c>"Submitted"</c> text. It will be re-fetching the node and checking65    /// it over and over, until the condition is met or until the timeout is reached. You66    /// can pass this timeout as an option.67    /// </para>68    /// <para>By default, the timeout for assertions is set to 5 seconds.</para>69    /// </summary>70    public partial interface IPlaywrightAssertions71    {72        /// <summary>73        /// <para>Creates a <see cref="ILocatorAssertions"/> object for the given <see cref="ILocator"/>.</para>74        /// <code>await Expect(locator).ToBeVisibleAsync();</code>75        /// </summary>76        /// <param name="locator"><see cref="ILocator"/> object to use for assertions.</param>77        ILocatorAssertions Expect(ILocator locator);78        /// <summary>79        /// <para>Creates a <see cref="IPageAssertions"/> object for the given <see cref="IPage"/>.</para>80        /// <code>await Expect(page).ToHaveTitleAsync("News");</code>81        /// </summary>82        /// <param name="page"><see cref="IPage"/> object to use for assertions.</param>83        IPageAssertions Expect(IPage page);84    }85}86#nullable disable...

PageAssertions.cs

Source:PageAssertions.cs

...43            }44            return value;45        }46        public Task ToHaveTitleAsync(string titleOrRegExp, PageAssertionsToHaveTitleOptions options = null) =>47            ExpectImplAsync("to.have.title", new ExpectedTextValue() { String = titleOrRegExp, NormalizeWhiteSpace = true }, titleOrRegExp, "Page title expected to be", ConvertToFrameExpectOptions(options));48        public Task ToHaveTitleAsync(Regex titleOrRegExp, PageAssertionsToHaveTitleOptions options = null) =>49            ExpectImplAsync("to.have.title", ExpectedRegex(titleOrRegExp, new() { NormalizeWhiteSpace = true }), titleOrRegExp, "Page title expected to be", ConvertToFrameExpectOptions(options));50        public Task ToHaveURLAsync(string urlOrRegExp, PageAssertionsToHaveURLOptions options = null) =>51            ExpectImplAsync("to.have.url", new ExpectedTextValue() { String = _page.Context.CombineUrlWithBase(urlOrRegExp) }, urlOrRegExp, "Page URL expected to be", ConvertToFrameExpectOptions(options));52        public Task ToHaveURLAsync(Regex urlOrRegExp, PageAssertionsToHaveURLOptions options = null) =>53            ExpectImplAsync("to.have.url", ExpectedRegex(urlOrRegExp), urlOrRegExp, "Page URL expected to match regex", ConvertToFrameExpectOptions(options));54    }55}...

PlaywrightTest.cs

Source:PlaywrightTest.cs

...38            Playwright = await _playwrightTask.ConfigureAwait(false);39            BrowserType = Playwright[BrowserName];40            Assert.IsNotNull(BrowserType, $"The requested browser ({BrowserName}) could not be found - make sure your BROWSER env variable is set correctly.");41        }42        public ILocatorAssertions Expect(ILocator locator) => Assertions.Expect(locator);43        public IPageAssertions Expect(IPage page) => Assertions.Expect(page);44    }45}...

Assertions.cs

Source:Assertions.cs

2namespace Microsoft.Playwright3{4    public static class Assertions5    {6        public static ILocatorAssertions Expect(ILocator locator) => new LocatorAssertions(locator, false);7        public static IPageAssertions Expect(IPage page) => new PageAssertions(page, false);8    }9}...

Expect

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Assertions;3using System;4using System.Threading.Tasks;5{6    static async Task Main(string[] args)7    {8        using var playwright = await Playwright.CreateAsync();9        await using var browser = await playwright.Chromium.LaunchAsync();10        var page = await browser.NewPageAsync();11        await page.ExpectAsync("input[name=q]");12        await page.FillAsync("input[name=q]", "Playwright");13        await page.PressAsync("input[name=q]", "Enter");14        await page.ScreenshotAsync("screenshot.png");15    }16}

Expect

Using AI Code Generation

1using Microsoft.Playwright;2var playwright = await Playwright.CreateAsync();3var browser = await playwright.Chromium.LaunchAsync();4var page = await browser.NewPageAsync();5await page.ExpectNavigationAsync(() => page.ClickAsync("a"));6await page.ExpectNavigationAsync(() => page.ClickAsync("button"));7await page.ExpectNavigationAsync(() => page.ClickAsync("input"));8await page.ExpectNavigationAsync(() => page.ClickAsync("img"));9await page.ExpectNavigationAsync(() => page.ClickAsync("link"));10await page.ExpectNavigationAsync(() => page.ClickAsync("ul"));11await page.ExpectNavigationAsync(() => page.ClickAsync("li"));12await page.ExpectNavigationAsync(() => page.ClickAsync("div"));13await page.ExpectNavigationAsync(() => page.ClickAsync("span"));14await page.ExpectNavigationAsync(() => page.ClickAsync("i"));15await page.ExpectNavigationAsync(() => page.ClickAsync("b"));16await page.ExpectNavigationAsync(() => page.ClickAsync("body"));17await page.ExpectNavigationAsync(() => page.ClickAsync("p"));18await page.ExpectNavigationAsync(() => page.ClickAsync("h1"));19await page.ExpectNavigationAsync(() => page.ClickAsync("h2"));20await page.ExpectNavigationAsync(() => page.ClickAsync("h3"));21await page.ExpectNavigationAsync(() => page.ClickAsync("h4"));22await page.ExpectNavigationAsync(() => page.ClickAsync("h5"));23await page.ExpectNavigationAsync(() => page.ClickAsync("h6"));24await page.ExpectNavigationAsync(() => page.ClickAsync("html"));25await page.ExpectNavigationAsync(() => page.ClickAsync("form"));26await page.ExpectNavigationAsync(() => page.ClickAsync("select"));27await page.ExpectNavigationAsync(() => page.ClickAsync("option"));28await page.ExpectNavigationAsync(() => page.ClickAsync("textarea"));29await page.ExpectNavigationAsync(() => page.ClickAsync("label"));30await page.ExpectNavigationAsync(() => page.ClickAsync("table"));31await page.ExpectNavigationAsync(() => page.ClickAsync("tr"));32await page.ExpectNavigationAsync(() => page.ClickAsync("th"));33await page.ExpectNavigationAsync(() => page.ClickAsync("td"));34await page.ExpectNavigationAsync(() => page.ClickAsync("thead"));35await page.ExpectNavigationAsync(() => page.ClickAsync("tbody"));36await page.ExpectNavigationAsync(() => page.ClickAsync("tfoot"));37await page.ExpectNavigationAsync(() => page.ClickAsync("caption"));38await page.ExpectNavigationAsync(() => page.ClickAsync("colgroup"));

Expect

Using AI Code Generation

1var page = await context.NewPageAsync();2await page.TypeAsync("input[title=\"Search\"]", "Hello World");3await page.PressAsync("input[title=\"Search\"]", "Enter");4await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);5var element = await page.QuerySelectorAsync("a");6await element.ClickAsync();7await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);8var element1 = await page.QuerySelectorAsync("a");9await element1.ClickAsync();10await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);11await page.ExpectNavigationAsync(() => page.ClickAsync("a"));12var element2 = await page.QuerySelectorAsync("a");13await element2.ClickAsync();14await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);15await page.ExpectNavigationAsync(() => page.ClickAsync("a"));16var element3 = await page.QuerySelectorAsync("a");17await element3.ClickAsync();18await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);19await page.ExpectNavigationAsync(() => page.ClickAsync("a"));20var element4 = await page.QuerySelectorAsync("a");21await element4.ClickAsync();22await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);23await page.ExpectNavigationAsync(() => page.ClickAsync("a"));24var element5 = await page.QuerySelectorAsync("a");25await element5.ClickAsync();26await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);27await page.ExpectNavigationAsync(() => page.ClickAsync("a"));28var element6 = await page.QuerySelectorAsync("a");29await element6.ClickAsync();30await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);31await page.ExpectNavigationAsync(() => page.ClickAsync("a"));32var element7 = await page.QuerySelectorAsync("a");33await element7.ClickAsync();34await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);35await page.ExpectNavigationAsync(() => page.ClickAsync("a"));36var element8 = await page.QuerySelectorAsync("a");37await element8.ClickAsync();38await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);39await page.ExpectNavigationAsync(() => page.ClickAsync("a"));40var element9 = await page.QuerySelectorAsync("a");41await element9.ClickAsync();42await page.WaitForLoadStateAsync(LoadState.DOMContentLoaded);43await page.ExpectNavigationAsync(() => page.ClickAsync("a"));44var element10 = await page.QuerySelectorAsync("a");45await element10.ClickAsync();

Expect

Using AI Code Generation

1using Microsoft.Playwright;2using Microsoft.Playwright.Assertions;3using System.Threading.Tasks;4{5    {6        [PlaywrightTest("2.cs", "Expect", "Expect")]7        public async Task Expect()8        {9            using var playwright = await Playwright.CreateAsync();10            using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            await page.SetViewportSizeAsync(1280, 720);15            await page.ClickAsync("text=Sign in");

Expect

Using AI Code Generation

1await page.ExpectSelectorAsync("text=Hello, world!");2await page.ExpectSelectorAsync("css=div");3await page.ExpectSelectorAsync("id=foo");4await page.ExpectSelectorAsync("name=foo");5await page.ExpectSelectorAsync("selector=div");6await page.ExpectSelectorAsync("text=foo");7await page.ExpectSelectorAsync("data-testid=foo");8await page.ExpectSelectorAsync("data-test-id=foo");9await page.ExpectSelectorAsync("data-test=foo");10await page.ExpectSelectorAsync("data-testid=foo");11await page.ExpectSelectorAsync("data-test-id=foo");12await page.ExpectSelectorAsync("data-test=foo");13await page.ExpectSelectorAsync("data-testid=foo");14await page.ExpectSelectorAsync("data-test-id=foo");15await page.ExpectSelectorAsync("data-test=foo");16await page.ExpectSelectorAsync("data-testid=foo");17await page.ExpectSelectorAsync("data-test-id=foo");18await page.ExpectSelectorAsync("data-test=foo");19await page.ExpectSelectorAsync("text=Hello, world!");20await page.ExpectSelectorAsync("css=div");21await page.ExpectSelectorAsync("id=foo");22await page.ExpectSelectorAsync("name=foo");23await page.ExpectSelectorAsync("selector=div");24await page.ExpectSelectorAsync("text=foo");25await page.ExpectSelectorAsync("data-testid=foo");26await page.ExpectSelectorAsync("data-test-id=foo");27await page.ExpectSelectorAsync("data-test=foo");28await page.ExpectSelectorAsync("data-testid=foo");29await page.ExpectSelectorAsync("data-test-id=foo");30await page.ExpectSelectorAsync("data-test=foo");31await page.ExpectSelectorAsync("data-testid=foo");32await page.ExpectSelectorAsync("data-test-id=foo");33await page.ExpectSelectorAsync("data-test=foo");34await page.ExpectSelectorAsync("data-testid=foo");35await page.ExpectSelectorAsync("data-test-id=foo");36await page.ExpectSelectorAsync("data-test=foo");37await page.ExpectSelectorAsync("text=Hello, world!");38await page.ExpectSelectorAsync("css=div");39await page.ExpectSelectorAsync("id

Expect

Using AI Code Generation

1using System;2using System.Threading.Tasks;3using Microsoft.Playwright;4using Microsoft.Playwright.Assertions;5{6    {7        static async Task Main(string[] args)8        {9            using var playwright = await Playwright.CreateAsync();10            await using var browser = await playwright.Chromium.LaunchAsync(new BrowserTypeLaunchOptions11            {12            });13            var page = await browser.NewPageAsync();14            await page.ExpectAsync("input[name='q']");15            await browser.CloseAsync();16        }17    }18}

Playwright tutorial

LambdaTest’s Playwright tutorial will give you a broader idea about the Playwright automation framework, its unique features, and use cases with examples to exceed your understanding of Playwright testing. This tutorial will give A to Z guidance, from installing the Playwright framework to some best practices and advanced concepts.

Chapters:

What is Playwright : Playwright is comparatively new but has gained good popularity. Get to know some history of the Playwright with some interesting facts connected with it.
How To Install Playwright : Learn in detail about what basic configuration and dependencies are required for installing Playwright and run a test. Get a step-by-step direction for installing the Playwright automation framework.
Playwright Futuristic Features: Launched in 2020, Playwright gained huge popularity quickly because of some obliging features such as Playwright Test Generator and Inspector, Playwright Reporter, Playwright auto-waiting mechanism and etc. Read up on those features to master Playwright testing.
What is Component Testing: Component testing in Playwright is a unique feature that allows a tester to test a single component of a web application without integrating them with other elements. Learn how to perform Component testing on the Playwright automation framework.
Inputs And Buttons In Playwright: Every website has Input boxes and buttons; learn about testing inputs and buttons with different scenarios and examples.
Functions and Selectors in Playwright: Learn how to launch the Chromium browser with Playwright. Also, gain a better understanding of some important functions like “BrowserContext,” which allows you to run multiple browser sessions, and “newPage” which interacts with a page.
Handling Alerts and Dropdowns in Playwright : Playwright interact with different types of alerts and pop-ups, such as simple, confirmation, and prompt, and different types of dropdowns, such as single selector and multi-selector get your hands-on with handling alerts and dropdown in Playright testing.
Playwright vs Puppeteer: Get to know about the difference between two testing frameworks and how they are different than one another, which browsers they support, and what features they provide.
Run Playwright Tests on LambdaTest: Playwright testing with LambdaTest leverages test performance to the utmost. You can run multiple Playwright tests in Parallel with the LammbdaTest test cloud. Get a step-by-step guide to run your Playwright test on the LambdaTest platform.
Playwright Python Tutorial: Playwright automation framework support all major languages such as Python, JavaScript, TypeScript, .NET and etc. However, there are various advantages to Python end-to-end testing with Playwright because of its versatile utility. Get the hang of Playwright python testing with this chapter.
Playwright End To End Testing Tutorial: Get your hands on with Playwright end-to-end testing and learn to use some exciting features such as TraceViewer, Debugging, Networking, Component testing, Visual testing, and many more.
Playwright Video Tutorial: Watch the video tutorials on Playwright testing from experts and get a consecutive in-depth explanation of Playwright automation testing.