hyperledger / fabric-x-common

83%

Build Type

push

github

Committed by web-flow

Commit Message

Fix newest iterator on empty file ledger (#116)

#### Type of change

- Bug fix

#### Description

When `SeekPosition_Newest` is used on an empty `FileLedger`, `Iterator`
computed `Height - 1`, underflowing to `math.MaxUint64`. This makes the
iterator request an impossible block number instead of waiting from
block zero.

- Guard newest seek when ledger height is zero
- Start empty-ledger newest iterators at block zero
- Add regression coverage for the empty-ledger case

#### Related

Companion for hyperledger/fabric-x-committer#601.

Signed-off-by: Senthilnathan <cendhu@gmail.com>

Coverage Stats

4 of 4 new or added lines in 1 file covered. (100.0%)

8 existing lines in 4 files now uncovered.

14848 of 17962 relevant lines covered (82.66%)

0.92 hits per line