public void ContentPageWithMissingClass()
{
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml""
x:Class=""Microsoft.Maui.Controls.Xaml.UnitTests.CustomView""
/>" ;
Assert.That(XamlLoader.Create(xaml, true), Is.TypeOf <ContentPage>());
}
public void ViewWithMissingClass()
{
var xaml = @"
<ContentView xmlns=""http://schemas.microsoft.com/dotnet/2021/maui""
xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml""
x:Class=""Microsoft.Maui.Controls.Xaml.UnitTests.CustomView""
/>" ;
Assert.That(XamlLoader.Create(xaml, true), Is.TypeOf <ContentView>());
}
public void CreateFromXamlDoesntFailOnMissingEventHandler()
{
var xaml = @"
<Button xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
Clicked=""handleClick"">
</Button>" ;
Button button = null;
Assert.DoesNotThrow(() => button = XamlLoader.Create(xaml, true) as Button);
Assert.NotNull(button);
}
public void UnknownMarkupExtensionOnMissingType()
{
XamlLoader.FallbackTypeResolver = (p, type) => type ?? typeof(MockView);
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:local=""clr-namespace:MissingNamespace;assembly=MissingAssembly"">
<local:MyCustomButton Bar=""{local:Foo}"" />
</ContentPage>" ;
var page = (ContentPage)XamlLoader.Create(xaml, true);
Assert.That(page.Content, Is.TypeOf <MockView>());
}
public void CreateFromXaml()
{
var xaml = @"
<ContentView xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
x:Class=""Xamarin.Forms.Xaml.UnitTests.FOO"">
<Label Text=""Foo"" x:Name=""label""/>
</ContentView>" ;
var view = XamlLoader.Create(xaml);
Assert.That(view, Is.TypeOf <ContentView> ());
Assert.AreEqual("Foo", ((Label)((ContentView)view).Content).Text);
}
public void IgnoreMarkupExtensionException()
{
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml"">
<ListView ItemsSource=""{x:Static Foo}"" />
</ContentPage>" ;
var exceptions = new List <Exception>();
Xamarin.Forms.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
Assert.That(exceptions.Count, Is.GreaterThan(1));
}
public void UnknownGenericType()
{
XamlLoader.FallbackTypeResolver = (p, type) => type ?? typeof(MockView);
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:local=""clr-namespace:MissingNamespace;assembly=MissingAssembly""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml"">
<local:MyCustomButton x:TypeArguments=""local:MyCustomType"" />
</ContentPage>" ;
var page = (ContentPage)XamlLoader.Create(xaml, true);
Assert.That(page.Content, Is.TypeOf <MockView>());
}
public void CanIgnoreSettingPropertyThatThrows()
{
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests"">
<local:SettingPropertyThrows TestValue=""Test"" TestBP=""bar""/>
</ContentPage>" ;
var exceptions = new List <Exception>();
Xamarin.Forms.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
Assert.That(exceptions.Count, Is.EqualTo(2));
}
public void IgnoreConverterException()
{
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests"">
<Label BackgroundColor=""AlmostPink"" />
</ContentPage>" ;
var exceptions = new List <Exception>();
Xamarin.Forms.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
Assert.That(exceptions.Count, Is.EqualTo(1));
}
public void CanProvideInstanceWhenReplacedTypeConstructorInvalid()
{
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:Microsoft.Maui.Controls.Xaml.UnitTests;assembly=Microsoft.Maui.Controls.Xaml.UnitTests"">
<StackLayout>
<local:ReplacedType x:FactoryMethod=""CreateInstance"" />
</StackLayout>
</ContentPage>" ;
XamlLoader.FallbackTypeResolver = (p, type) => type ?? typeof(Button);
XamlLoader.InstantiationFailedCallback = (xmltype, type, exception) => new Button();
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
}
public void UnknownMarkupExtensionKnownType()
{
XamlLoader.FallbackTypeResolver = (p, type) => type ?? typeof(MockView);
var xaml = @"
<ContentPage xmlns=""http://schemas.microsoft.com/dotnet/2021/maui""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:MissingNamespace;assembly=MissingAssembly"">
<Button Text=""{local:Foo}"" />
</ContentPage>" ;
var page = (ContentPage)XamlLoader.Create(xaml, true);
Assert.That(page.Content, Is.TypeOf <Button>());
}
public void MissingGenericRootTypeProvidesCorrectTypeName()
{
var xaml = @"
<local:GenericContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:MissingNamespace""
x:TypeArguments=""x:Object"" />" ;
XamlLoader.FallbackTypeResolver = (p, type) =>
{
Assert.That(p.Select(i => i.TypeName), Has.Some.EqualTo("GenericContentPage`1"));
return(typeof(ContentPage));
};
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
}
public void StaticResourceKeyNotFound()
{
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms"">
<Button Style=""{StaticResource MissingStyle}"" />
</ContentPage>" ;
var exceptions = new List <Exception>();
Xamarin.Forms.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
var page = (ContentPage)XamlLoader.Create(xaml, true);
Assert.That(page.Content, Is.TypeOf <Button>());
Assert.That(exceptions.Count, Is.EqualTo(2));
}
public void UnknownGenericType()
{
XamlLoader.FallbackTypeResolver = (p, type) => type ??
(p.Any(i => i.TypeName == "MyCustomButton`1") ? typeof(ProxyGenericButton <>) : typeof(MockView));
var xaml = @"
<ContentPage xmlns=""http://schemas.microsoft.com/dotnet/2021/maui""
xmlns:local=""clr-namespace:MissingNamespace;assembly=MissingAssembly""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml"">
<local:MyCustomButton x:TypeArguments=""local:MyCustomType"" />
</ContentPage>" ;
var page = (ContentPage)XamlLoader.Create(xaml, true);
Assert.That(page.Content, Is.TypeOf <ProxyGenericButton <MockView> >());
}
public void IgnoreFindByNameInvalidCastException()
{
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml"">
<Label x:Name=""MyName"" />
</ContentPage>" ;
var exceptions = new List <Exception>();
Xamarin.Forms.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
var content = (ContentPage)XamlLoader.Create(xaml, true);
Assert.DoesNotThrow(() => content.FindByName <Button>("MyName"));
Assert.That(exceptions.Count, Is.GreaterThanOrEqualTo(1));
}
public void IgnoreConverterException()
{
var xaml = @"
<ContentPage xmlns=""http://schemas.microsoft.com/dotnet/2021/maui""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:Microsoft.Maui.Controls.Xaml.UnitTests;assembly=Microsoft.Maui.Controls.Xaml.UnitTests"">
<Label BackgroundColor=""AlmostPink"" />
</ContentPage>" ;
var exceptions = new List <Exception>();
#pragma warning disable CS0618 // Type or member is obsolete
Microsoft.Maui.Controls.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
#pragma warning restore CS0618 // Type or member is obsolete
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
Assert.That(exceptions.Count, Is.EqualTo(1));
}
public void CanIgnoreSettingPropertyThatThrows()
{
var xaml = @"
<ContentPage xmlns=""http://schemas.microsoft.com/dotnet/2021/maui""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:Microsoft.Maui.Controls.Xaml.UnitTests;assembly=Microsoft.Maui.Controls.Xaml.UnitTests"">
<local:SettingPropertyThrows TestValue=""Test"" TestBP=""bar""/>
</ContentPage>" ;
var exceptions = new List <Exception>();
#pragma warning disable CS0618 // Type or member is obsolete
Microsoft.Maui.Controls.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
#pragma warning restore CS0618 // Type or member is obsolete
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
Assert.That(exceptions.Count, Is.EqualTo(2));
}
public void IgnoreFindByNameInvalidCastException()
{
var xaml = @"
<ContentPage xmlns=""http://schemas.microsoft.com/dotnet/2021/maui""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml"">
<Label x:Name=""MyName"" />
</ContentPage>" ;
var exceptions = new List <Exception>();
#pragma warning disable CS0618 // Type or member is obsolete
Microsoft.Maui.Controls.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
#pragma warning restore CS0618 // Type or member is obsolete
var content = (ContentPage)XamlLoader.Create(xaml, true);
Assert.DoesNotThrow(() => content.FindByName <Button>("MyName"));
Assert.That(exceptions.Count, Is.GreaterThanOrEqualTo(1));
}
public void ContentPageWithMissingTypeMockviewReplacement()
{
XamlLoader.FallbackTypeResolver = (p, type) => type ?? typeof(MockView);
var xaml = @"
<ContentPage xmlns=""http://schemas.microsoft.com/dotnet/2021/maui""
xmlns:local=""clr-namespace:MissingNamespace;assembly=MissingAssembly""
xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml"">
<ContentPage.Content>
<local:MyCustomButton />
</ContentPage.Content>
</ContentPage>" ;
var page = (ContentPage)XamlLoader.Create(xaml, true);
Assert.That(page.Content, Is.TypeOf <MockView>());
}
public void StaticResourceKeyNotFound()
{
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms"">
<Button Style=""{StaticResource MissingStyle}"" />
</ContentPage>" ;
var exceptions = new List <Exception>();
#pragma warning disable CS0618 // Type or member is obsolete
Microsoft.Maui.Controls.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
#pragma warning restore CS0618 // Type or member is obsolete
var page = (ContentPage)XamlLoader.Create(xaml, true);
Assert.That(page.Content, Is.TypeOf <Button>());
Assert.That(exceptions.Count, Is.EqualTo(2));
}
public void IgnoreNamedMissingTypeException()
{
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests"">
<StackLayout>
<local:Missing x:Name=""MyName"" />
<Button x:Name=""button"" />
<Button x:Name=""button"" />
</StackLayout>
</ContentPage>" ;
var exceptions = new List <Exception>();
Xamarin.Forms.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
Assert.That(exceptions.Count, Is.GreaterThan(1));
}
public void IgnoreMarkupExtensionException()
{
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests"">
<StackLayout>
<ListView ItemsSource=""{x:Static Foo}"" />
<ListView ItemsSource=""{local:Missing Test}"" />
<Label Text=""{Binding Foo"" />
</StackLayout>
</ContentPage>" ;
var exceptions = new List <Exception>();
Xamarin.Forms.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
Assert.That(exceptions.Count, Is.GreaterThan(1));
}
public void IgnoreMarkupExtensionException()
{
var xaml = @"
<ContentPage xmlns=""http://schemas.microsoft.com/dotnet/2021/maui""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:Microsoft.Maui.Controls.Xaml.UnitTests;assembly=Microsoft.Maui.Controls.Xaml.UnitTests"">
<StackLayout>
<ListView ItemsSource=""{x:Static Foo}"" />
<ListView ItemsSource=""{local:Missing Test}"" />
<Label Text=""{Binding Foo"" />
</StackLayout>
</ContentPage>" ;
var exceptions = new List <Exception>();
#pragma warning disable CS0618 // Type or member is obsolete
Microsoft.Maui.Controls.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
#pragma warning restore CS0618 // Type or member is obsolete
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
Assert.That(exceptions.Count, Is.GreaterThan(1));
}
public void IgnoreNamedMissingTypeException()
{
var xaml = @"
<ContentPage xmlns=""http://schemas.microsoft.com/dotnet/2021/maui""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:Microsoft.Maui.Controls.Xaml.UnitTests;assembly=Microsoft.Maui.Controls.Xaml.UnitTests"">
<StackLayout>
<local:Missing x:Name=""MyName"" />
<Button x:Name=""button"" />
<Button x:Name=""button"" />
</StackLayout>
</ContentPage>" ;
var exceptions = new List <Exception>();
#pragma warning disable CS0618 // Type or member is obsolete
Microsoft.Maui.Controls.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
#pragma warning restore CS0618 // Type or member is obsolete
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
Assert.That(exceptions.Count, Is.GreaterThan(1));
}
public void TextAsRandomContent()
{
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:Xamarin.Forms.Xaml.UnitTests;assembly=Xamarin.Forms.Xaml.UnitTests"">
<StackLayout>
<Label>xyz</Label>
<StackLayout>foo</StackLayout>
<Label><Label.FormattedText>bar</Label.FormattedText></Label>
</StackLayout>
</ContentPage>" ;
XamlLoader.Create(xaml, true);
var exceptions = new List <Exception>();
Xamarin.Forms.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
Assert.That(exceptions.Count, Is.GreaterThanOrEqualTo(1));
}
public void InvalidGenericType()
{
int exceptionCount = 0;
#pragma warning disable 0618 // Type or member is obsolete
Maui.Controls.Internals.ResourceLoader.ExceptionHandler = _ => exceptionCount++;
XamlLoader.FallbackTypeResolver = (p, type) => type ?? typeof(MockView);
#pragma warning restore 0618 // Type or member is obsolete
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:local=""clr-namespace:MissingNamespace;assembly=MissingAssembly""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml"">
<local:MyCustomButton x:TypeArguments=""local:MyCustomType"" />
</ContentPage>" ;
var page = (ContentPage)XamlLoader.Create(xaml, true);
Assert.That(page.Content, Is.Null);
Assert.That(exceptionCount, Is.EqualTo(1));
}
public void CssStyleTargetingRealTypeNotAppliedToMissingType()
{
XamlLoader.FallbackTypeResolver = (p, type) => type ?? typeof(Button);
XamlLoader.ValueCreatedCallback = (x, v) =>
{
if (x.XmlTypeName == "MyCustomButton" && v is Element e)
{
e._cssFallbackTypeName = "MyCustomButton";
}
if (x.XmlTypeName == "MyCustomButton" && v is VisualElement ve)
{
ve._mergedStyle.ReRegisterImplicitStyles("MissingNamespace.MyCustomButton");
}
};
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:local=""clr-namespace:MissingNamespace;assembly=MissingAssembly"">
<ContentPage.Resources>
<StyleSheet>
<![CDATA[
button {
background-color: red;
}
]]>
</StyleSheet>
</ContentPage.Resources>
<StackLayout>
<Button />
<MyCustomButton />
</StackLayout>
</ContentPage>" ;
var page = (ContentPage)XamlLoader.Create(xaml, true);
var button = ((StackLayout)page.Content).Children[0];
var myButton = ((StackLayout)page.Content).Children[1];
Assert.That(button.BackgroundColor, Is.EqualTo(Colors.Red));
Assert.That(myButton.BackgroundColor, Is.Not.EqualTo(Colors.Red));
}
public void ContentPageWithMissingTypeNoReplacement()
{
XamlLoader.FallbackTypeResolver = (p, type) => type;
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:local=""clr-namespace:MissingNamespace;assembly=MissingAssembly""
xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml"">
<ContentPage.Content>
<local:MyCustomButton Foo=""Bar"">
<local:MyCustomButton.Qux>
<Label />
</local:MyCustomButton.Qux>
</local:MyCustomButton>
</ContentPage.Content>
</ContentPage>" ;
var page = (ContentPage)XamlLoader.Create(xaml, true);
Assert.That(page.Content, Is.Null);
}
public void TextAsRandomContent()
{
var xaml = @"
<ContentPage xmlns=""http://schemas.microsoft.com/dotnet/2021/maui""
xmlns:x=""http://schemas.microsoft.com/winfx/2009/xaml""
xmlns:local=""clr-namespace:Microsoft.Maui.Controls.Xaml.UnitTests;assembly=Microsoft.Maui.Controls.Xaml.UnitTests"">
<StackLayout>
<Label>xyz</Label>
<StackLayout>foo</StackLayout>
<Label><Label.FormattedText>bar</Label.FormattedText></Label>
</StackLayout>
</ContentPage>" ;
XamlLoader.Create(xaml, true);
var exceptions = new List <Exception>();
#pragma warning disable CS0618 // Type or member is obsolete
Microsoft.Maui.Controls.Internals.ResourceLoader.ExceptionHandler = exceptions.Add;
#pragma warning restore CS0618 // Type or member is obsolete
Assert.DoesNotThrow(() => XamlLoader.Create(xaml, true));
Assert.That(exceptions.Count, Is.GreaterThanOrEqualTo(1));
}
public void MissingTypeWithUnknownProperty()
{
XamlLoader.FallbackTypeResolver = (p, type) => type ?? typeof(Button);
XamlLoader.ValueCreatedCallback = (x, v) => {
if (x.XmlTypeName == "MyCustomButton" && v is VisualElement ve)
{
ve._mergedStyle.ReRegisterImplicitStyles("MissingNamespace.MyCustomButton");
}
};
var xaml = @"
<ContentPage xmlns=""http://xamarin.com/schemas/2014/forms""
xmlns:local=""clr-namespace:MissingNamespace;assembly=MissingAssembly""
xmlns:x=""http://schemas.microsoft.com/winfx/2006/xaml"">
<ContentPage.Content>
<local:MyCustomButton MyColor=""Red"" />
</ContentPage.Content>
</ContentPage>" ;
var page = (ContentPage)XamlLoader.Create(xaml, true);
Assert.That(page.Content, Is.TypeOf <Button>());
}