autoUpdateGoldenFiles top-level property Null safety
Whether golden files should be automatically updated during tests rather than compared to the image bytes recorded by the tests.
When this is
true, matchesGoldenFile will always report a successful
match, because the bytes being tested implicitly become the new golden.
The Flutter tool will automatically set this to
true when the user runs
flutter test --update-goldens, so callers should generally never have to
explicitly modify this value.
bool autoUpdateGoldenFiles = false;