public void Callback_Is_Called_On_Direct_Property_Change()
{
bool isCallbackCalled = false;
var first = ObservedPropertyModels.CreateFirst("text");
Action callback = () => isCallbackCalled = true;
var property = ObservedProperty.Create(() => first.Second.Third.Value, callback);
first.Second.Third.Value = "new";
Assert.True(isCallbackCalled);
}
public void ObservedProperty_Dispose_Works()
{
bool isCallbackCalled = false;
var first = ObservedPropertyModels.CreateFirst("text");
Action callback = () => isCallbackCalled = true;
var property = ObservedProperty.Create(() => first.Second.Third.Value, callback);
property.Dispose();
first.Second = ObservedPropertyModels.CreateSecond("new1");
Assert.False(isCallbackCalled);
}
public void Same_Scoped_Expressions_With_Different_ToStrings_Are_Equal()
{
var bindable = ObservedPropertyModels.CreateFirst("");
MemberAccessor <string> ae1, ae2;
{
var item1 = bindable.Second;
ae1 = MemberAccessor.Create(() => item1.Third.Value);
}
{
var item2 = bindable.Second;
ae2 = MemberAccessor.Create(() => item2.Third.Value);
}
Assert.Equal(ae1, ae2);
}
public void ObservedProperty_Suppress_Works()
{
bool isCallbackCalled = false;
var first = ObservedPropertyModels.CreateFirst("text");
Action callback = () => isCallbackCalled = true;
var property = ObservedProperty.Create(() => first.Second.Third.Value, callback);
using (property.Suppress())
first.Second = ObservedPropertyModels.CreateSecond("new");
Assert.False(isCallbackCalled);
first.Second = ObservedPropertyModels.CreateSecond("new1");
Assert.True(isCallbackCalled);
}
public void Different_Scoped_Expressions_With_Similar_ToStrings_Are_Not_Equal()
{
var bindable1 = ObservedPropertyModels.CreateFirst("");
var bindable2 = ObservedPropertyModels.CreateFirst("");
MemberAccessor <string> ae1, ae2;
{
var item = bindable1;
ae1 = MemberAccessor.Create(() => item.Second.Third.Value);
}
{
var item = bindable2;
ae2 = MemberAccessor.Create(() => item.Second.Third.Value);
}
// ae1.ToString() == ae2.ToString()
Assert.NotEqual(ae1, ae2);
}
public void Generated_Root_Reduction_Works()
{
var bindable = ObservedPropertyModels.CreateFirst("");
MemberAccessor <ThirdBindable> ae;
{
var item = bindable;
ae = MemberAccessor.Create(() => item.Second.Third);
}
var reduced = ae.Expression;
if (reduced.Body is not MemberExpression member1)
{
throw new XunitException();
}
if (member1.Member is not PropertyInfo property1 || property1.Name != nameof(SecondBindable.Third))
{
throw new XunitException();
}
if (member1.Expression is not MemberExpression member2)
{
throw new XunitException();
}
if (member2.Member is not PropertyInfo property2 || property2.Name != nameof(FirstBindable.Second))
{
throw new XunitException();
}
if (member2.Expression is not ConstantExpression constant1 || constant1.Value != bindable)
{
throw new XunitException();
}
}
