Qiskit / qiskit / 15093753500

88%

main: 88%

Build Type

push

github

Committed by web-flow

Commit Message

Do not construct layout passes with no coupling map (#14353)

The builtin plugins fairly frequently construct instances of the layout
passes with `coupling_map=None` (or similar), even when this is against
the documentation of the passes.  A couple of passes, but not all, have
defensive code in their `run` methods to raise a better error in this
case, but even so, there is an assumption that passes will not be _run_
with `coupling_map=None`.

The preset pass managers do follow this assumption; conditional code
prevents those passes from ever being called.  However, we know that
there's no coupling map ahead of time, so we can simply not even
construct the layout passes, let alone add them to the `PassManager`.

Run Details

11 of 13 new or added lines in 1 file covered. (84.62%)

8 existing lines in 3 files now uncovered.

78332 of 88718 relevant lines covered (88.29%)

428713.1 hits per line