Initialize

ezFlap's WidgetWrapper class wraps around ezFlap widgets and helps to initialize their props, route parameters, and models.

Props

Use WidgetWrapper's mapProps constructor parameter to provide values for the wrapped widget's props.

For example:

Widget

Test

Route Params

Use WidgetWrapper's mapRouteParams parameter to provide route parameters to populate @EzRouteParam fields.

Widget

Test

Emit Handlers

WidgetWrapper allows to register callbacks as emit handlers.

If we actually want some test code to be invoked when an event is emitted - we can register a callback using the WidgetWrapper's constructor's mapEmitHandlers parameter:

Widget

Test

However, if all we want is to make sure the event was emitted - then it is not necessary to register emit handlers.

Instead, we can use WidgetWrapper's getNumEmits method to get the number of times a certain event has been emitted.

For example, using the widget from the previous example, we can verify that events are emitted as expected like this:

Test

Models

Models need to be initialized individually.

"Initializing a model" in WidgetWrapper is like providing a model with z-model.

There are two variations

• Initialize a model with a value.
• Initialize a model with an Rx instance that contains the value.

With Value

Use the WidgetWrapper.initModel() function.

Signature

Rx<T> initModel<T>({
	String? key,
	required T value,
})

Widget

Test

With Rx

It is also possible to initialize a model with a pre-existing Rx variable.

This is useful in case we want multiple models to read from and write to the same variable.

For example:

Widget

Test

Assertions

WidgetWrapper allows the test code to get and set the current value of a model.

This is done with WidgetWrapper's getModelValue and setModelValue methods.

For example:

Widget

Test