public void ObservesAdoptedObject()
{
var obj = new Body {
LeftArm = new Arm {
Thumb = new Digit {
LengthMM = 50
}
}
};
var path = PropertyPaths <Body> .Get <int>(t => t.LeftArm.Thumb.LengthMM).Single();
var observer = new PropertyPathObserver <Body>(path, obj);
obj.LeftArm.Thumb = new Digit();
int changesObserved = 0;
observer.Changed += (sender, e) =>
{
changesObserved++;
};
obj.LeftArm.Thumb.LengthMM = 51;
Assert.Equal(1, changesObserved);
}
public void InterpretsPropertyPathsCorrectly()
{
var paths = PropertyPaths <Outer> .Get <int>(o => o.Inner != null?o.Inner.Qty : 0);
Assert.Equal(2, paths.Count);
Assert.Contains("Inner", paths.Select(p => p.ToString()));
Assert.Contains("Inner.Qty", paths.Select(p => p.ToString()));
}
public void ReducesLikePaths()
{
var paths = PropertyPaths <Outer> .Get(o => o.Inner.Qty > 6 && o.Inner.Qty < 10);
var reduced = PropertyPath.Reduce(paths);
Assert.Equal(1, reduced.Count);
Assert.Equal("Inner.Qty", reduced.Single().ToString());
}
public void ObservesIntermediatePath()
{
var obj = new Body();
var path = PropertyPaths <Body> .Get <int>(t => t.LeftArm.Thumb.LengthMM).Single();
var observer = new PropertyPathObserver <Body>(path, obj);
int changesObserved = 0;
observer.Changed += (sender, e) =>
{
changesObserved++;
};
obj.LeftArm = new Arm();
Assert.Equal(1, changesObserved);
}