Add settle argument to tTestWidgets.

Controls whether pumpAndSettle() or pump() is called.

packages/convenient_test_dev/lib/src/functions/core.dart

@@ -160,19 +160,24 @@ Future<void> _lastTearDownAll() async {
 
 typedef TWidgetTesterCallback = Future<void> Function(ConvenientTest t);
 
+/// Wrapper around [testWidgets].
+///
+/// If the app's main widget contains a widget that never settles (for example:
+/// has animations that repeats infinitely), set [settle] to false.
 @isTest
 void tTestWidgets(
  // ... forward the arguments ...
  String description,
  TWidgetTesterCallback callback, {
  bool skip = false,
+ bool settle = true,
 }) {
  testWidgets(
  description,
  (tester) async => await ConvenientTest.withActiveInstance(tester, (t) async {
  final log = t.log('START APP', '');
  await myGetIt.get<ConvenientTestSlot>().appMain(AppMainExecuteMode.integrationTest);
- await t.pumpAndSettle();
+ settle ? await t.pumpAndSettle() : await t.pump();
  await log.snapshot(name: 'after');
 
  await callback(t);