public void IntProperty()
{
var obj = new TestClass()
{
IntProp = 3
};
var lens = new PropertyLens<TestClass, int>(m => m.IntProp);
Assert.AreEqual(3, obj.IntProp);
Assert.AreEqual(3, lens.Map(obj));
lens.Apply(obj, 42);
Assert.AreEqual(42, obj.IntProp);
Assert.AreEqual(42, lens.Map(obj));
}
public void StringProperty()
{
var obj = new TestClass()
{
StringProp = "initial"
};
var lens = new PropertyLens<TestClass, string>(m => m.StringProp);
Assert.AreEqual("initial", obj.StringProp);
Assert.AreEqual("initial", lens.Map(obj));
lens.Apply(obj, "new");
Assert.AreEqual("new", obj.StringProp);
Assert.AreEqual("new", lens.Map(obj));
}
public void ChildProperty()
{
var obj = new TestClass()
{
Child = new Child()
{
ChildStringProp = "initial"
}
};
var lens = new PropertyLens<TestClass, string>(m => m.Child.ChildStringProp);
Assert.AreEqual(obj.Child.ChildStringProp, lens.Map(obj));
lens.Apply(obj, "new");
Assert.AreEqual("new", obj.Child.ChildStringProp);
}