Branch coverage issue with AsyncEnumerable Extension (yield return)

[manuelamateo]

When testing an AsyncEnumerable extension that transforms an AsyncEnumerable in an nested form of well sized batches, I get a high percentage of uncovered branches. There aren't any obvious branches to cover and I can't figure out how to fix it. It may be a bug.

See reproduction https://github.com/meggima/coverlet-reproductions AsyncEnumerableBatchExtensionReproduction.cs & AsyncEnumerableBatchExtensionReproductionFixture.cs (Version coverlet.msbuild 3.1.2)

Thanks for looking into it.

[MarcoRossignoli]

Thanks for reporting this