public void HasValueWorks()
{
var component = Mock.Of <IDependencyComponent>();
var prop = Mock.Of <IDependencyProperty>();
var store = new LocalValueStore(component, 0);
Assert.False(store.HasValue(prop));
store.SetValue(prop, "value");
Assert.True(store.HasValue(prop));
store.SetValue(prop, "other value");
Assert.True(store.HasValue(prop));
store.ClearValue(prop);
Assert.False(store.HasValue(prop));
store.SetValue(prop, "reassign value");
Assert.True(store.HasValue(prop));
}
public void CanClearValue()
{
var component = Mock.Of <IDependencyComponent>();
var prop = Mock.Of <IDependencyProperty>();
var store = new LocalValueStore(component, 0);
store.SetValue(prop, "value");
var raised = 0;
store.ValueChanged += (s, e) =>
{
Assert.Same(component, e.Component);
Assert.Equal(Maybe.FromValue <object>("value"), e.OldValue);
Assert.Equal(Maybe.None <object>(), e.NewValue);
raised++;
};
store.ClearValue(prop);
Assert.Equal(1, raised);
Assert.False(store.HasValue(prop));
}