public void GetValueShouldReturnValueUsingConverterTarget()
{
bool converterInvoked = false;
var memberMock = new BindingMemberInfoMock
{
Type = typeof(int)
};
CultureInfo culture = CultureInfo.InvariantCulture;
var parameter = new object();
var sourceModel = new BindingSourceModel();
var converterMock = new ValueConverterCoreMock
{
ConvertBack = (o, type, arg3, arg4) =>
{
converterInvoked = true;
o.ShouldEqual(sourceModel.IntProperty);
type.ShouldEqual(typeof(int));
arg3.ShouldEqual(parameter);
arg4.ShouldEqual(culture);
return int.MaxValue;
}
};
var dataContext = new DataContext
{
{BindingBuilderConstants.Converter, d => converterMock},
{BindingBuilderConstants.ConverterCulture, d => culture},
{BindingBuilderConstants.ConverterParameter, d => parameter}
};
string propertyName = GetMemberPath<BindingSourceModel>(model => model.IntProperty);
var valueAccessor = GetAccessor(sourceModel, propertyName, dataContext, false);
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(int.MaxValue);
converterInvoked.ShouldBeTrue();
}
public void GetValueShouldReturnActualValueDoubleSource()
{
const string value = "100";
bool isInvoked = false;
var memberMock = new BindingMemberInfoMock();
var sourceModel = new BindingSourceModel();
string propertyName1 = GetMemberPath <BindingSourceModel>(model => model.IntProperty);
string propertyName2 = GetMemberPath <BindingSourceModel>(model => model["test"]);
var valueAccessor = new MultiBindingSourceAccessor(new[]
{
CreateSource(sourceModel, propertyName1),
CreateSource(sourceModel, propertyName2),
},
(context, list) =>
{
list.Count.ShouldEqual(2);
isInvoked = true;
context.ShouldEqual(EmptyContext);
list[0].ShouldEqual(sourceModel.IntProperty);
list[1].ShouldEqual(sourceModel["test"]);
return(value);
}, EmptyContext);
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(value);
isInvoked.ShouldBeTrue();
isInvoked = false;
sourceModel["test"] = propertyName1;
sourceModel.IntProperty = int.MaxValue;
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(value);
isInvoked.ShouldBeTrue();
}
public void ValueChangingShouldCanBeCanceled()
{
const int oldValue = 0;
const int value = int.MaxValue;
bool isInvoked = false;
var srcAccessor = new BindingSourceAccessorMock();
var memberMock = new BindingMemberInfoMock();
var sourceModel = new BindingSourceModel();
string propertyName = GetMemberPath<BindingSourceModel>(model => model.IntProperty);
var valueAccessor = GetAccessor(sourceModel, propertyName, EmptyContext, true);
valueAccessor.ValueChanging += (sender, args) =>
{
sender.ShouldEqual(valueAccessor);
args.OldValue.ShouldEqual(oldValue);
args.NewValue.ShouldEqual(value);
args.Cancel = true;
isInvoked = true;
};
srcAccessor.GetValue = (info, context, arg3) =>
{
context.ShouldEqual(EmptyContext);
return value;
};
valueAccessor.SetValue(srcAccessor, EmptyContext, true);
isInvoked.ShouldBeTrue();
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(oldValue);
}
public void ManagerShouldRaiseEventWhenParentChanged()
{
bool contextChanged = false;
var context = new object();
IEventListener eventListener = null;
var memberMock = new BindingMemberInfoMock
{
TryObserveMember = (o, listener) =>
{
eventListener = listener;
return(null);
}
};
var managerMock = new VisualTreeManagerMock
{
FindParent = o => null,
GetParentMember = type =>
{
type.ShouldEqual(context.GetType());
return(memberMock);
}
};
var manager = CreateContextManager(managerMock);
var bindingContext = manager.GetBindingContext(context);
bindingContext.ValueChanged += (sender, args) => contextChanged = true;
eventListener.ShouldNotBeNull();
eventListener.Handle(this, EventArgs.Empty);
contextChanged.ShouldBeTrue();
}
public void GetValueShouldNotThrowExceptionInvalidValueIfFlagFalse()
{
var memberMock = new BindingMemberInfoMock();
var sourceModel = new BindingSourceModel();
const string propertyName = "invalid";
var valueAccessor = GetAccessor(sourceModel, propertyName, EmptyContext, true);
valueAccessor.GetValue(memberMock, EmptyContext, false).ShouldEqual(null);
}
public void GetValueShouldReturnActualValueIndexer2()
{
var memberMock = new BindingMemberInfoMock();
var sourceModel = new BindingSourceModel();
string propertyName = GetMemberPath<BindingSourceModel>(model => model[int.MaxValue]);
var valueAccessor = GetAccessor(sourceModel, propertyName, EmptyContext, true);
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(int.MaxValue);
}
public void GetEventValueShouldAlwaysReturnBindingMemberValue()
{
var memberMock = new BindingMemberInfoMock();
var source = new BindingSourceModel();
var accessor = GetAccessor(source, BindingSourceModel.EventName, EmptyContext, true);
var memberValue = (BindingActionValue)accessor.GetValue(memberMock, EmptyContext, true);
memberValue.MemberSource.Target.ShouldEqual(source);
memberValue.Member.MemberType.ShouldEqual(BindingMemberType.Event);
}
public void GetValueShouldReturnActualValueForNestedPropertyDoubleIndexer()
{
var memberMock = new BindingMemberInfoMock();
var propertyName = GetMemberPath<BindingSourceModel>(model => model.NestedModel["test", 0]);
var sourceModel = new BindingSourceModel { NestedModel = new BindingSourceNestedModel() };
var valueAccessor = GetAccessor(sourceModel, propertyName, EmptyContext, true);
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(sourceModel.NestedModel["test", 0]);
sourceModel.NestedModel["test", 0] = propertyName;
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(sourceModel.NestedModel["test", 0]);
}
public void GetValueShouldThrowExceptionInvalidValueIfFlagTrue()
{
var memberMock = new BindingMemberInfoMock();
var sourceModel = new BindingSourceModel();
const string propertyName = "invalid";
var valueAccessor = new MultiBindingSourceAccessor(new[] { CreateSource(sourceModel, propertyName) },
(context, list) => null, EmptyContext);
ShouldThrow(() => valueAccessor.GetValue(memberMock, EmptyContext, true));
}
public void GetValueShouldReturnDefaultValueIfNestedPropertyNullDoubleIndexer()
{
var memberMock = new BindingMemberInfoMock();
var propertyName = GetMemberPath<BindingSourceModel>(model => model.NestedModel["test", 0]);
var sourceModel = new BindingSourceModel();
var valueAccessor = GetAccessor(sourceModel, propertyName, EmptyContext, true);
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(null);
memberMock.Type = typeof(int);
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(0);
}
public void GetEventValueShouldAlwaysReturnBindingMemberValue()
{
var memberMock = new BindingMemberInfoMock {
MemberType = BindingMemberType.Event
};
var source = new BindingSourceModel();
var accessor = new MultiBindingSourceAccessor(new[] { CreateSource(source, BindingSourceModel.EventName) },
(context, list) => memberMock, EmptyContext);
var memberValue = (BindingActionValue)accessor.GetValue(memberMock, EmptyContext, true);
memberValue.GetValue(new object[] { null, null }).ShouldEqual(memberMock);
}
public void GetValueShouldReturnValueUsingTargetNullValueSource()
{
const int targetNullValue = 0;
var memberMock = new BindingMemberInfoMock();
var sourceModel = new BindingSourceModel { ObjectProperty = null };
var dataContext = new DataContext
{
{BindingBuilderConstants.TargetNullValue, targetNullValue},
};
string propertyName = GetMemberPath<BindingSourceModel>(model => model.ObjectProperty);
var valueAccessor = GetAccessor(sourceModel, propertyName, dataContext, true);
valueAccessor.GetValue(memberMock, dataContext, true).ShouldEqual(targetNullValue);
}
public void GetValueShouldReturnValueUsingFallbackValueSource()
{
const int fallback = 0;
var memberMock = new BindingMemberInfoMock();
var sourceModel = new BindingSourceModel { ObjectProperty = BindingConstants.UnsetValue };
var dataContext = new DataContext
{
{BindingBuilderConstants.Fallback, d => fallback},
};
string propertyName = GetMemberPath<BindingSourceModel>(model => model.ObjectProperty);
var valueAccessor = GetAccessor(sourceModel, propertyName, dataContext, true);
valueAccessor.GetValue(memberMock, dataContext, true).ShouldEqual(fallback);
}
public void GetValueShouldReturnValueUsingFallbackValueSourceDoubleSource()
{
const int fallback = 0;
var memberMock = new BindingMemberInfoMock();
var sourceModel = new BindingSourceModel {
ObjectProperty = BindingConstants.UnsetValue
};
var dataContext = new DataContext
{
{ BindingBuilderConstants.Fallback, d => fallback },
};
string propertyName = GetMemberPath <BindingSourceModel>(model => model.ObjectProperty);
var valueAccessor = new MultiBindingSourceAccessor(new[]
{
CreateSource(sourceModel, propertyName),
CreateSource(sourceModel, GetMemberPath(sourceModel, model => model.IntProperty)),
}, (context, list) => list[0], dataContext);
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(fallback);
}
public void ManagerShouldNotUpdateContextWhenParentChangedIfHasValue()
{
bool isFindParentInvoked = false;
var context = new object();
IEventListener eventListener = null;
var memberMock = new BindingMemberInfoMock
{
TryObserveMember = (o, listener) =>
{
eventListener = listener;
return(null);
}
};
var managerMock = new VisualTreeManagerMock
{
FindParent = o =>
{
o.ShouldEqual(context);
isFindParentInvoked = true;
return(null);
},
GetParentMember = type =>
{
type.ShouldEqual(context.GetType());
return(memberMock);
}
};
var manager = CreateContextManager(managerMock);
var bindingContext = manager.GetBindingContext(context);
isFindParentInvoked.ShouldBeTrue();
bindingContext.Value.ShouldBeNull();
isFindParentInvoked = false;
bindingContext.Value = context;
eventListener.ShouldNotBeNull();
eventListener.Handle(this, EventArgs.Empty);
isFindParentInvoked.ShouldBeFalse();
}
public void GetValueShouldReturnValueUsingConverterSourceDoubleSource()
{
bool converterInvoked = false;
var memberMock = new BindingMemberInfoMock
{
Type = typeof(int)
};
CultureInfo culture = CultureInfo.InvariantCulture;
var parameter = new object();
var sourceModel = new BindingSourceModel();
var converterMock = new ValueConverterCoreMock
{
Convert = (o, type, arg3, arg4) =>
{
converterInvoked = true;
o.ShouldEqual(sourceModel.IntProperty.ToString() + sourceModel.ObjectProperty);
type.ShouldEqual(typeof(int));
arg3.ShouldEqual(parameter);
arg4.ShouldEqual(culture);
return(int.MaxValue);
}
};
var dataContext = new DataContext
{
{ BindingBuilderConstants.Converter, d => converterMock },
{ BindingBuilderConstants.ConverterCulture, d => culture },
{ BindingBuilderConstants.ConverterParameter, d => parameter }
};
string propertyName = GetMemberPath <BindingSourceModel>(model => model.IntProperty);
var valueAccessor = new MultiBindingSourceAccessor(new[]
{
CreateSource(sourceModel, propertyName),
CreateSource(sourceModel, GetMemberPath(sourceModel, model => model.ObjectProperty)),
},
(context, list) => list[0].ToString() + list[1], dataContext);
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(int.MaxValue);
converterInvoked.ShouldBeTrue();
}
public void GetValueShouldReturnActualValue()
{
bool isInvoked = false;
var memberMock = new BindingMemberInfoMock();
var sourceModel = new BindingSourceModel();
string propertyName = GetMemberPath <BindingSourceModel>(model => model.IntProperty);
var valueAccessor = new MultiBindingSourceAccessor(new[] { CreateSource(sourceModel, propertyName) },
(context, list) =>
{
isInvoked = true;
context.ShouldEqual(EmptyContext);
list.Single().ShouldEqual(sourceModel.IntProperty);
return(sourceModel.IntProperty);
}, EmptyContext);
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(sourceModel.IntProperty);
isInvoked.ShouldBeTrue();
isInvoked = false;
sourceModel.IntProperty = int.MaxValue;
valueAccessor.GetValue(memberMock, EmptyContext, true).ShouldEqual(sourceModel.IntProperty);
isInvoked.ShouldBeTrue();
}
public void ManagerShouldUseParentBindingContextIfItHasNotExplicit()
{
bool isFindParentInvoked = false;
bool isObserveParentInvoked = false;
var context = new object();
var memberMock = new BindingMemberInfoMock
{
TryObserveMember = (o, listener) =>
{
o.ShouldEqual(context);
isObserveParentInvoked = true;
return(null);
}
};
var managerMock = new VisualTreeManagerMock
{
FindParent = o =>
{
o.ShouldEqual(context);
isFindParentInvoked = true;
return(null);
},
GetParentMember = type =>
{
type.ShouldEqual(context.GetType());
return(memberMock);
}
};
var manager = CreateContextManager(managerMock);
var bindingContext = manager.GetBindingContext(context);
isFindParentInvoked.ShouldBeTrue();
isObserveParentInvoked.ShouldBeTrue();
bindingContext.Value.ShouldBeNull();
}
