pumpWidget method
Renders the UI from the given widget
.
Calls runApp with the given widget, then triggers a frame and flushes
microtasks, by calling pump with the same duration
(if any). The
supplied EnginePhase is the final phase reached during the pump pass; if
not supplied, the whole pass is executed.
Subsequent calls to this is different from pump in that it forces a full
rebuild of the tree, even if widget
is the same as the previous call.
pump will only rebuild the widgets that have changed.
See also LiveTestWidgetsFlutterBindingFramePolicy, which affects how
this method works when the test is run with flutter run
.
Implementation
Future<void> pumpWidget(Widget widget, [
Duration duration,
EnginePhase phase = EnginePhase.sendSemanticsUpdate,
]) {
return TestAsyncUtils.guard<void>(() {
binding.attachRootWidget(widget);
binding.scheduleFrame();
return binding.pump(duration, phase);
});
}