How check if text its obscured on InputField

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Im trying to test if password its obscured, this is how far I go, but seems like flutter can read a text even if it is obscured.

 testWidgets('password must be hidden', (WidgetTester tester) async {
  await tester.pumpWidget(wrapWithMaterialApp(child: page));

  await tester.enterText(find.byKey(Key('pass')), '1234');
  final passFinder = find.text('1234');
  expect(passFinder, findsNothing);

});

the test actually find '1234' but im completely sure its obscured.

1 Answers

Regardless of obscureText flag, entered text is always stored in memory (this parameter affects only visual representation). In tests we can only check this property as follows:

  testWidgets('TextField', (WidgetTester tester) async {
    await tester.pumpWidget(MyApp());
    final finder = find.byKey(Key('pass'));
    final input = tester.firstWidget<TextField>(finder);
    expect(input.obscureText, true);
  });
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