public void Bind_Logs_BindingError()
{
var target = new Class1();
var source = new Subject <object>();
var called = false;
var expectedMessageTemplate = "Error binding to {Target}.{Property}: {Message}";
LogCallback checkLogMessage = (level, area, src, mt, pv) =>
{
if (level == LogEventLevel.Error &&
area == LogArea.Binding &&
mt == expectedMessageTemplate)
{
called = true;
}
};
using (TestLogSink.Start(checkLogMessage))
{
target.Bind(Class1.QuxProperty, source);
source.OnNext(6.7);
source.OnNext(new BindingError(new InvalidOperationException("Foo")));
Assert.Equal(6.7, target.GetValue(Class1.QuxProperty));
Assert.True(called);
}
}
public void Binding_To_Direct_Property_Logs_BindingError()
{
var target = new Class1();
var source = new Subject <object>();
var called = false;
LogCallback checkLogMessage = (level, area, src, mt, pv) =>
{
if (level == LogEventLevel.Warning &&
area == LogArea.Binding &&
mt == "Error in binding to {Target}.{Property}: {Message}" &&
pv.Length == 3 &&
pv[0] is Class1 &&
object.ReferenceEquals(pv[1], Class1.FooProperty) &&
(string)pv[2] == "Binding Error Message")
{
called = true;
}
};
using (TestLogSink.Start(checkLogMessage))
{
target.Bind(Class1.FooProperty, source);
source.OnNext("baz");
source.OnNext(new BindingNotification(new InvalidOperationException("Binding Error Message"), BindingErrorType.Error));
}
Assert.True(called);
}
public void Invalid_FallbackValue_Logs_Error()
{
var called = false;
LogCallback checkLogMessage = (level, area, src, mt, pv) =>
{
if (level == LogEventLevel.Warning &&
area == LogArea.Binding &&
mt == "Error in binding to {Target}.{Property}: {Message}" &&
pv.Length == 3 &&
pv[0] is ProgressBar &&
object.ReferenceEquals(pv[1], ProgressBar.ValueProperty) &&
(string)pv[2] == "Could not convert FallbackValue 'bar' to 'System.Double'")
{
called = true;
}
};
using (UnitTestApplication.Start(TestServices.StyledWindow))
using (TestLogSink.Start(checkLogMessage))
{
var xaml = @"
<Window xmlns='https://github.com/avaloniaui'>
<ProgressBar Maximum='10' Value='{Binding Value, FallbackValue=bar}'/>
</Window>";
var window = (Window)AvaloniaRuntimeXamlLoader.Load(xaml);
var progressBar = (ProgressBar)window.Content;
window.DataContext = new { Value = "foo" };
window.ApplyTemplate();
Assert.Equal(0, progressBar.Value);
Assert.True(called);
}
}
public void Control_Should_Log_Binding_Errors_When_No_Ancestor_With_Such_Name()
{
using (UnitTestApplication.Start(TestServices.StyledWindow))
{
var xaml = @"
<Window xmlns='https://github.com/avaloniaui'
xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
xmlns:local='clr-namespace:Avalonia.Base.UnitTests.Logging;assembly=Avalonia.UnitTests'>
<Panel>
<Rectangle Fill='{Binding $parent[Grid].Background}'/>
</Panel>
</Window>";
var calledTimes = 0;
using var logSink = TestLogSink.Start((l, a, s, m, d) =>
{
if (l >= Avalonia.Logging.LogEventLevel.Warning && s is Rectangle)
{
calledTimes++;
}
});
var window = (Window)AvaloniaRuntimeXamlLoader.Load(xaml);
window.ApplyTemplate();
window.Presenter.ApplyTemplate();
Assert.Equal(1, calledTimes);
}
}
public void Control_Should_Not_Log_Binding_Errors_When_Detached_From_Visual_Tree()
{
using (UnitTestApplication.Start(TestServices.StyledWindow))
{
var xaml = @"
<Window xmlns='https://github.com/avaloniaui'
xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
xmlns:local='clr-namespace:Avalonia.Base.UnitTests.Logging;assembly=Avalonia.UnitTests'>
<Panel Name='panel'>
<Rectangle Name='rect' Fill='{Binding $parent[Window].Background}'/>
</Panel>
</Window>";
var window = (Window)AvaloniaRuntimeXamlLoader.Load(xaml);
var calledTimes = 0;
using var logSink = TestLogSink.Start((l, a, s, m, d) =>
{
if (l >= Avalonia.Logging.LogEventLevel.Warning)
{
calledTimes++;
}
});
var panel = window.FindControl <Panel>("panel");
var rect = window.FindControl <Rectangle>("rect");
window.ApplyTemplate();
window.Presenter.ApplyTemplate();
panel.Children.Remove(rect);
Assert.Equal(0, calledTimes);
}
}
public void Should_Not_Log_Binding_Error_When_Not_Attached_To_Logical_Tree()
{
var target = new Decorator {
DataContext = "foo"
};
var called = false;
LogCallback checkLogMessage = (level, area, src, mt, pv) =>
{
if (level >= Logging.LogEventLevel.Warning)
{
called = true;
}
};
using (TestLogSink.Start(checkLogMessage))
{
target.Bind(Decorator.TagProperty, new Binding("Foo"));
}
Assert.False(called);
}