public void ExceptionTest()
{
AssertThrow <ArgumentNullException>(
() => TwoWayBinding.Create((IProperty <Source, string>)null, this.target.GetProperty(o => o.Property)).Dispose(),
() => TwoWayBinding.Create(this.source.GetProperty(o => o.Property), (IProperty <Target, string>)null).Dispose(),
() => TwoWayBinding.Create(this.source.GetProperty(o => o.Property), null, this.target.GetProperty(o => o.Property), v => v).Dispose(),
() => TwoWayBinding.Create(this.source.GetProperty(o => o.Property), v => v, this.target.GetProperty(o => o.Property), null).Dispose());
}
public void TwoWayBindingTest()
{
this.AssertValues(this.source.Property, 0, this.target.Property, 0);
Assert.AreNotEqual(this.source.Property, this.target.Property);
var value = this.source.Property;
int sourceOriginated = 0;
int targetOriginated = 0;
using (var binding = TwoWayBinding.Create(
this.source.GetProperty(o => o.Property), this.target.GetProperty(o => o.Property)))
{
binding.ChangeOriginatedAtSource +=
(s, e) =>
{
Assert.AreEqual(binding, s);
Assert.AreEqual(binding.Source, e.Property);
++sourceOriginated;
};
binding.ChangeOriginatedAtTarget +=
(s, e) =>
{
Assert.AreEqual(binding, s);
Assert.AreEqual(binding.Target, e.Property);
++targetOriginated;
};
this.AssertValues(value, 0, value, 1);
AssertOriginatedCounts(0, sourceOriginated, 0, targetOriginated);
this.source.Property = value = GetRandomString();
this.AssertValues(value, 1, value, 2);
AssertOriginatedCounts(1, sourceOriginated, 0, targetOriginated);
this.target.Property = value = GetRandomString();
this.AssertValues(value, 2, value, 3);
AssertOriginatedCounts(1, sourceOriginated, 1, targetOriginated);
}
this.AssertValues(value, 2, value, 3);
AssertOriginatedCounts(1, sourceOriginated, 1, targetOriginated);
this.source.Property.Ignore();
var targetValue = this.target.Property;
var sourceValue = this.source.Property = GetRandomString();
this.AssertValues(sourceValue, 3, targetValue, 3);
AssertOriginatedCounts(1, sourceOriginated, 1, targetOriginated);
this.target.Property = targetValue = GetRandomString();
this.AssertValues(sourceValue, 3, targetValue, 4);
AssertOriginatedCounts(1, sourceOriginated, 1, targetOriginated);
}