public async void Should_Convert_Get_Invalid_Double_String_To_UnsetValue()
{
var data = new Class1 { StringValue = "foo" };
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
var result = await target.Take(1);
Assert.Equal(PerspexProperty.UnsetValue, result);
}
public async void Should_Coerce_Get_Null_String_To_Double_Deafult_Value()
{
var data = new Class1 { StringValue = null };
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
var result = await target.Take(1);
Assert.Equal(0.0, result);
}
public async void Should_Get_Simple_Property_Value()
{
var data = new Class1 { StringValue = "foo" };
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(string));
var result = await target.Take(1);
Assert.Equal("foo", result);
}
public async void Should_Convert_Get_String_To_Double()
{
var data = new Class1 { StringValue = "5.6" };
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
var result = await target.Take(1);
Assert.Equal(5.6, result);
}
public async void Should_Convert_Get_Double_To_String()
{
var data = new Class1 { DoubleValue = 5.6 };
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
var result = await target.Take(1);
Assert.Equal("5.6", result);
}
public async void Getting_Invalid_Double_String_Should_Return_BindingError()
{
var data = new Class1 { StringValue = "foo" };
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
var result = await target.Take(1);
Assert.IsType<BindingError>(result);
}
public void Should_Convert_Set_String_To_Double()
{
var data = new Class1 { StringValue = "5.6" };
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
target.OnNext(6.7);
Assert.Equal("6.7", data.StringValue);
}
public void Should_Set_Simple_Property_Value()
{
var data = new Class1 { StringValue = "foo" };
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(string));
target.OnNext("bar");
Assert.Equal("bar", data.StringValue);
}
public void Bind(IObservablePropertyBag instance, PerspexProperty property)
{
var subject = new ExpressionSubject(CreateExpressionObserver(instance, property));
if (subject != null)
{
Bind(instance, property, subject);
}
}
public async void Should_Convert_Get_Double_To_String()
{
var data = new Class1 {
DoubleValue = 5.6
};
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
var result = await target.Take(1);
Assert.Equal("5.6", result);
}
public async void Should_Get_Simple_Property_Value()
{
var data = new Class1 {
StringValue = "foo"
};
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(string));
var result = await target.Take(1);
Assert.Equal("foo", result);
}
public async void Should_Coerce_Get_Null_Double_String_To_UnsetValue()
{
var data = new Class1 {
StringValue = null
};
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
var result = await target.Take(1);
Assert.Equal(AvaloniaProperty.UnsetValue, result);
}
public async void Should_Convert_Get_String_To_Double()
{
var data = new Class1 {
StringValue = "5.6"
};
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
var result = await target.Take(1);
Assert.Equal(5.6, result);
}
public async void Should_Convert_Get_Invalid_Double_String_To_UnsetValue()
{
var data = new Class1 {
StringValue = "foo"
};
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
var result = await target.Take(1);
Assert.Equal(PerspexProperty.UnsetValue, result);
}
public async void Getting_Invalid_Double_String_Should_Return_BindingError()
{
var data = new Class1 {
StringValue = "foo"
};
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
var result = await target.Take(1);
Assert.IsType <BindingError>(result);
}
public void Should_Coerce_Set_Invalid_Double_String_To_Default_Value()
{
var data = new Class1 {
DoubleValue = 5.6
};
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
target.OnNext("foo");
Assert.Equal(0, data.DoubleValue);
}
public void Calculate_StringExpression_StringResult(string input, string expected)
{
// Arrange
var expression = new ExpressionSubject(input);
// Act
string result = expression.Calculate();
// Assert
Assert.AreEqual(result, expected);
}
public void Bind(IObservablePropertyBag instance, PerspexProperty property)
{
var subject = new ExpressionSubject(
CreateExpressionObserver(instance, property),
property.PropertyType);
if (subject != null)
{
Bind(instance, property, subject);
}
}
public void Should_Convert_Set_String_To_Double()
{
Thread.CurrentThread.CurrentUICulture = CultureInfo.InvariantCulture;
var data = new Class1 { StringValue = (5.6).ToString() };
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
target.OnNext(6.7);
Assert.Equal((6.7).ToString(), data.StringValue);
}
public void Should_Convert_Set_String_To_Double()
{
var data = new Class1 {
StringValue = "5.6"
};
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
target.OnNext(6.7);
Assert.Equal("6.7", data.StringValue);
}
public void Should_Convert_Set_Double_To_String()
{
var data = new Class1 {
DoubleValue = 5.6
};
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
target.OnNext("6.7");
Assert.Equal(6.7, data.DoubleValue);
}
public void Setting_Invalid_Double_String_Should_Not_Change_Target()
{
var data = new Class1 {
DoubleValue = 5.6
};
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
target.OnNext("foo");
Assert.Equal(5.6, data.DoubleValue);
}
public void Should_Set_Simple_Property_Value()
{
var data = new Class1 {
StringValue = "foo"
};
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(string));
target.OnNext("bar");
Assert.Equal("bar", data.StringValue);
}
public void Should_Coerce_Setting_UnsetValue_Double_To_Default_Value()
{
var data = new Class1 {
DoubleValue = 5.6
};
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
target.OnNext(AvaloniaProperty.UnsetValue);
Assert.Equal(0, data.DoubleValue);
}
public async void Should_Convert_Get_Double_To_String()
{
CultureInfo.CurrentUICulture = CultureInfo.InvariantCulture;
var data = new Class1 {
DoubleValue = 5.6
};
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
var result = await target.Take(1);
Assert.Equal((5.6).ToString(), result);
}
public void Should_Convert_Set_String_To_Double()
{
CultureInfo.CurrentUICulture = CultureInfo.InvariantCulture;
var data = new Class1 {
StringValue = (5.6).ToString()
};
var target = new ExpressionSubject(new ExpressionObserver(data, "StringValue"), typeof(double));
target.OnNext(6.7);
Assert.Equal((6.7).ToString(), data.StringValue);
}
public void Should_Convert_Set_Double_To_String()
{
Thread.CurrentThread.CurrentUICulture = CultureInfo.InvariantCulture;
var data = new Class1 {
DoubleValue = 5.6
};
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
target.OnNext("6.7");
Assert.Equal(6.7, data.DoubleValue);
}
/// <inheritdoc/>
public InstancedBinding Initiate(
IAvaloniaObject target,
AvaloniaProperty targetProperty,
object anchor = null)
{
Contract.Requires <ArgumentNullException>(target != null);
var pathInfo = ParsePath(Path);
ValidateState(pathInfo);
ExpressionObserver observer;
if (pathInfo.ElementName != null || ElementName != null)
{
observer = CreateElementObserver(
(target as IControl) ?? (anchor as IControl),
pathInfo.ElementName ?? ElementName,
pathInfo.Path);
}
else if (Source != null)
{
observer = CreateSourceObserver(Source, pathInfo.Path);
}
else if (RelativeSource == null || RelativeSource.Mode == RelativeSourceMode.DataContext)
{
observer = CreateDataContexObserver(
target,
pathInfo.Path,
targetProperty == Control.DataContextProperty,
anchor);
}
else if (RelativeSource.Mode == RelativeSourceMode.TemplatedParent)
{
observer = CreateTemplatedParentObserver(target, pathInfo.Path);
}
else
{
throw new NotSupportedException();
}
var subject = new ExpressionSubject(
observer,
targetProperty?.PropertyType ?? typeof(object),
Converter ?? DefaultValueConverter.Instance,
ConverterParameter,
FallbackValue,
Priority);
return(new InstancedBinding(subject, Mode, Priority));
}
public IExpressionSubject GetById(Guid id)
{
var collectioin = db.GetCollection <ExpressionDto>(_table);
var filter = Builders <ExpressionDto> .Filter.Eq("Id", id);
var expressionDto = collectioin.Find(filter).FirstOrDefault();
var expressionSubject = new ExpressionSubject(expressionDto.Infix)
{
Result = expressionDto.Result
};
return(expressionSubject);
}
public void Setting_Invalid_Double_String_Should_Use_FallbackValue()
{
var data = new Class1 {
DoubleValue = 5.6
};
var target = new ExpressionSubject(
new ExpressionObserver(data, "DoubleValue"),
typeof(string),
DefaultValueConverter.Instance,
fallbackValue: "9.8");
target.OnNext("foo");
Assert.Equal(9.8, data.DoubleValue);
}
public void Should_Pass_ConverterParameter_To_ConvertBack()
{
var data = new Class1 {
DoubleValue = 5.6
};
var converter = new Mock <IValueConverter>();
var target = new ExpressionSubject(
new ExpressionObserver(data, "DoubleValue"),
typeof(string),
converter.Object,
"foo");
target.OnNext("bar");
converter.Verify(x => x.ConvertBack("bar", typeof(double), "foo", CultureInfo.CurrentUICulture));
}
public List <IExpressionSubject> Get()
{
var collection = db.GetCollection <ExpressionDto>(_table);
var mongoCollection = collection.Find(new BsonDocument()).ToList();
var expressionSubjects = new List <IExpressionSubject>();
foreach (var expressionDto in mongoCollection)
{
var expressionSubject = new ExpressionSubject(expressionDto.Infix)
{
Result = expressionDto.Result
};
expressionSubjects.Add(expressionSubject);
}
return(expressionSubjects);
}
public void Should_Ignore_Set_Invalid_Double_String()
{
var data = new Class1 { DoubleValue = 5.6 };
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
target.OnNext("foo");
Assert.Equal(5.6, data.DoubleValue);
}
public void Should_Convert_Set_Double_To_String()
{
var data = new Class1 { DoubleValue = 5.6 };
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
target.OnNext("6.7");
Assert.Equal(6.7, data.DoubleValue);
}
public void Setting_Invalid_Double_String_Should_Use_FallbackValue()
{
var data = new Class1 { DoubleValue = 5.6 };
var target = new ExpressionSubject(
new ExpressionObserver(data, "DoubleValue"),
typeof(string),
"9.8",
DefaultValueConverter.Instance);
target.OnNext("foo");
Assert.Equal(9.8, data.DoubleValue);
}
public async void Should_Convert_Get_Double_To_String()
{
Thread.CurrentThread.CurrentUICulture = CultureInfo.InvariantCulture;
var data = new Class1 { DoubleValue = 5.6 };
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
var result = await target.Take(1);
Assert.Equal((5.6).ToString(), result);
}
public void Should_Convert_Set_Double_To_String()
{
Thread.CurrentThread.CurrentUICulture = CultureInfo.InvariantCulture;
var data = new Class1 { DoubleValue = 5.6 };
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
target.OnNext("6.7");
Assert.Equal(6.7, data.DoubleValue);
}
/// <inheritdoc/>
public InstancedBinding Initiate(
IAvaloniaObject target,
AvaloniaProperty targetProperty,
object anchor = null)
{
Contract.Requires <ArgumentNullException>(target != null);
var pathInfo = ParsePath(Path);
ValidateState(pathInfo);
ExpressionObserver observer;
if (pathInfo.ElementName != null || ElementName != null)
{
observer = CreateElementObserver(
(target as IControl) ?? (anchor as IControl),
pathInfo.ElementName ?? ElementName,
pathInfo.Path);
}
else if (Source != null)
{
observer = CreateSourceObserver(Source, pathInfo.Path);
}
else if (RelativeSource == null || RelativeSource.Mode == RelativeSourceMode.DataContext)
{
observer = CreateDataContexObserver(
target,
pathInfo.Path,
targetProperty == Control.DataContextProperty,
anchor);
}
else if (RelativeSource.Mode == RelativeSourceMode.TemplatedParent)
{
observer = CreateTemplatedParentObserver(target, pathInfo.Path);
}
else
{
throw new NotSupportedException();
}
var fallback = FallbackValue;
// If we're binding to DataContext and our fallback is UnsetValue then override
// the fallback value to null, as broken bindings to DataContext must reset the
// DataContext in order to not propagate incorrect DataContexts to child controls.
// See Avalonia.Markup.Xaml.UnitTests.Data.DataContext_Binding_Should_Produce_Correct_Results.
if (targetProperty == Control.DataContextProperty && fallback == AvaloniaProperty.UnsetValue)
{
fallback = null;
}
var subject = new ExpressionSubject(
observer,
targetProperty?.PropertyType ?? typeof(object),
fallback,
Converter ?? DefaultValueConverter.Instance,
ConverterParameter,
Priority);
return(new InstancedBinding(subject, Mode, Priority));
}
/// <inheritdoc/>
public InstancedBinding Initiate(
IAvaloniaObject target,
AvaloniaProperty targetProperty,
object anchor = null)
{
Contract.Requires<ArgumentNullException>(target != null);
var pathInfo = ParsePath(Path);
ValidateState(pathInfo);
ExpressionObserver observer;
if (pathInfo.ElementName != null || ElementName != null)
{
observer = CreateElementObserver(
(target as IControl) ?? (anchor as IControl),
pathInfo.ElementName ?? ElementName,
pathInfo.Path);
}
else if (Source != null)
{
observer = CreateSourceObserver(Source, pathInfo.Path);
}
else if (RelativeSource == null || RelativeSource.Mode == RelativeSourceMode.DataContext)
{
observer = CreateDataContexObserver(
target,
pathInfo.Path,
targetProperty == Control.DataContextProperty,
anchor);
}
else if (RelativeSource.Mode == RelativeSourceMode.TemplatedParent)
{
observer = CreateTemplatedParentObserver(target, pathInfo.Path);
}
else
{
throw new NotSupportedException();
}
var fallback = FallbackValue;
// If we're binding to DataContext and our fallback is UnsetValue then override
// the fallback value to null, as broken bindings to DataContext must reset the
// DataContext in order to not propagate incorrect DataContexts to child controls.
// See Avalonia.Markup.Xaml.UnitTests.Data.DataContext_Binding_Should_Produce_Correct_Results.
if (targetProperty == Control.DataContextProperty && fallback == AvaloniaProperty.UnsetValue)
{
fallback = null;
}
var subject = new ExpressionSubject(
observer,
targetProperty?.PropertyType ?? typeof(object),
fallback,
Converter ?? DefaultValueConverter.Instance,
ConverterParameter,
Priority);
return new InstancedBinding(subject, Mode, Priority);
}
public void Should_Pass_ConverterParameter_To_ConvertBack()
{
var data = new Class1 { DoubleValue = 5.6 };
var converter = new Mock<IValueConverter>();
var target = new ExpressionSubject(
new ExpressionObserver(data, "DoubleValue"),
typeof(string),
converter.Object,
"foo");
target.OnNext("bar");
converter.Verify(x => x.ConvertBack("bar", typeof(double), "foo", CultureInfo.CurrentUICulture));
}
public void Should_Coerce_Set_UnsetValue_To_Default_Value()
{
var data = new Class1 { DoubleValue = 5.6 };
var target = new ExpressionSubject(new ExpressionObserver(data, "DoubleValue"), typeof(string));
target.OnNext(PerspexProperty.UnsetValue);
Assert.Equal(0, data.DoubleValue);
}