public void ShouldGiveNewValueToValueChangedCallbackWhenValueChanges()
{
var entity = new NotifyingEntity();
var adapter = new ClrPropertyAdapter(entity, NotifyingEntity.PropertyInfo);
object value = null;
adapter.ValueChangedCallback = newValue => value = newValue;
entity.Property = 3;
Assert.AreEqual(3, value);
}
public void ShouldNotNotifyAboutValueChangesAfterBeingDisposed()
{
var entity = new NotifyingEntity();
var adapter = new ClrPropertyAdapter(entity, NotifyingEntity.PropertyInfo);
var callbackCallCount = 0;
adapter.ValueChangedCallback = newValue => ++ callbackCallCount;
adapter.Dispose();
entity.Property = 3;
Assert.AreEqual(0, callbackCallCount);
}
public void ShouldCallValueChangedCallbackWhenValueChanges()
{
var entity = new NotifyingEntity();
var adapter = new ClrPropertyAdapter(entity, NotifyingEntity.PropertyInfo);
var callbackCalled = false;
adapter.ValueChangedCallback = newValue => callbackCalled = true;
entity.Property = 5;
Assert.IsTrue(callbackCalled);
}
public void ShouldNotCallValueChangedCallbackWhenSettingValue()
{
var entity = new NotifyingEntity();
var adapter = new ClrPropertyAdapter(entity, NotifyingEntity.PropertyInfo);
bool callbackCalled = false;
adapter.ValueChangedCallback = newValue => { callbackCalled = true; };
adapter.SetValue(5);
Assert.IsFalse(callbackCalled);
}
public void ShouldNotUseOldValueChangedCallbackIfGivenNewOne()
{
var entity = new NotifyingEntity();
var adapter = new ClrPropertyAdapter(entity, NotifyingEntity.PropertyInfo);
var callbackCallCount = 0;
adapter.ValueChangedCallback = newValue => ++ callbackCallCount;
entity.Property = 5;
adapter.ValueChangedCallback = newValue => { };
entity.Property = 3;
Assert.AreEqual(1, callbackCallCount);
}
public void ShouldDoNothingWithoutValueChangedCallbackWhenValueChanges()
{
var entity = new NotifyingEntity();
var adapter = new ClrPropertyAdapter(entity, NotifyingEntity.PropertyInfo);
try
{
entity.Property = 5;
}
catch
{
Assert.Fail();
}
}
public void ShouldDoNothingAfterValueChangedCallbackIsSetToNullWhenValueChanges()
{
var entity = new NotifyingEntity();
var adapter = new ClrPropertyAdapter(entity, NotifyingEntity.PropertyInfo);
adapter.ValueChangedCallback = newValue => { };
adapter.ValueChangedCallback = null;
try
{
entity.Property = 3;
}
catch
{
Assert.Fail();
}
}