Qiskit / qiskit / 35916546317

88%

main: 88%

Build Type

push

github

Committed by web-flow

Commit Message

Skip a branch with no leaves when iterating a data tree (#16932)

`iter_leaves` and `iter_path` primed their lookahead by taking the first leaf of
a nested branch and unwrapping it, so a branch with no leaves beneath it
panicked instead of yielding nothing. `leaf_count` is built on `iter_leaves`, and
assembling a `QuantumProgram` counts a structure's leaves, so a structure holding
an empty branch anywhere but at its root could not be used at all.

Both iterators now step over such a branch and carry on, which is what
`leaf_count` already documents and what `into_leaves` already does.

Coverage Stats

37 of 37 new or added lines in 1 file covered. (100.0%)

8 existing lines in 3 files now uncovered.

121358 of 137794 relevant lines covered (88.07%)

950238.77 hits per line