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avoid-async-callback-in-fake-async

added in: 1.9.0
warning
🛠
Pro+

Warns when an async callback is passed to FakeAsync.

FakeAsync implementation does not await an async callback and the test will pass even if it should not.

Example​

❌ Bad:

void main() {
  // LINT: Async callbacks passed to 'FakeAsync' are not awaited making the test to always pass. Try removing the 'async' keyword.
  FakeAsync().run((fakeAsync) async {
    ...
  });

  // LINT: Async callbacks passed to 'FakeAsync' are not awaited making the test to always pass. Try removing the 'async' keyword.
  fakeAsync((fakeAsync) async {
    ...
  });
}

✅ Good:

void main() {
  FakeAsync().run((fakeAsync) {});

  fakeAsync((fakeAsync) {});
}