void Ex01()
{
Given("a property whose value is null", () => Property = new ObservableProperty <string?>(null));
Given("a BoundProperty that binds a given property", () => BoundProperty = BoundProperty <string?> .By(Property));
When("the BoundProperty value changing handler is added", () => BoundProperty.PropertyValueChanging += (_, e) =>
{
OldPropertyValue = e.OldValue;
NewPropertyValue = e.NewValue;
});
When("the value of the property is changed", () => Property.Value = "Changed");
Then("the old value of the property value changing handler should be the previous value", () => OldPropertyValue == null);
Then("the new value of the property value changing handler should be the changed value", () => NewPropertyValue == "Changed");
Then("the value of the BoundProperty should be the changed value", () => Property.Value == "Changed");
}
void Ex02()
{
Given("a property whose value is not null", () => Property = ObservableProperty <string?> .Of("Test"));
Given("a BoundProperty that binds a given property", () => BoundProperty = BoundProperty <string?> .By(Property));
When("the property value changing handler in which the value changing is canceled is added", () => Property.PropertyValueChanging += (_, e) => e.Disable());
When("the property value changed handler is added", () => Property.PropertyValueChanged += (_, e) =>
{
OldPropertyValue = e.OldValue;
NewPropertyValue = e.NewValue;
});
When("the value of the property is changed", () => Property.Value = "Changed");
Then("the property changed event handler should not be called", () => OldPropertyValue == null && NewPropertyValue == null);
Then("the value of the BoundProperty should not be changed", () => BoundProperty.Value == "Test");
}
