flash method
Flashes the Testable widget to give a visual indicator that the framework is interactging with the widget.
Implementation
Future<void> flash() async {
// Sometimes the
var timeout = Future.delayed(Duration(seconds: 10));
if (_renderController.testWidgetsEnabled == true) {
try {
for (var i = 0; i < _renderController.flashCount; i++) {
await Future.any(
[
timeout,
_animationController?.forward(from: 0.0).orCancel ??
Future.value(null)
],
);
await Future.any(
[
timeout,
_animationController?.reverse(from: 1.0).orCancel ??
Future.value(null)
],
);
}
} catch (e) {
// no-op
}
}
}