Wrapper of testWidgets, setUp, and tearDown that provide the WidgetTesterCallback argument
to the set-up and tear-down functions: testUI, setUpUI, and tearDownUI.
This allows a single set-up to be shared by several tests and the set-up to be continued in subgroups. In particular, it allows test to be written in rspec style for better readability.
group("testUI and setUpUI example test", () {
setUpUI((tester) async {
await tester.pumpWidget(MaterialApp(
home: Builder(
builder: (context) => GestureDetector(
onTap: () => Navigator.of(context).push(
MaterialPageRoute<void>(
builder: (context) => Container(
color: Colors.green,
child: const Text("page 2"),
),
),
),
child: Container(
color: Colors.red,
child: const Text("page 1"),
),
),
),
));
});
testUI("first page is shown", (tester) async {
expect(find.text("page 1"), findsOneWidget);
});
group("tapping the text", () {
setUpUI((tester) async {
await tester.tap(find.text("page 1"));
await tester.pumpAndSettle();
});
testUI("second page is shown", (tester) async {
expect(find.text("page 2"), findsOneWidget);
});
group("pop the second page", () {
setUpUI((tester) async {
final nav = tester.state<NavigatorState>(find.byType(Navigator));
nav.pop();
await tester.pumpAndSettle();
});
testUI("second page isn't visible anymore", (tester) async {
expect(find.text("page 2"), findsNothing);
});
testUI("first page is visible again", (tester) async {
expect(find.text("page 1"), findsOneWidget);
});
});
});
});