title: Mutant ids name the file, line, column and operator status: active origin: kind: agent recorded_at: '2026-10-29T17:52:17.830Z' id: SCEN-mutant-ids-name-the-file-line-column-and-operator type: scenario --- Given the example project, when the user lists the mutants as JSON, then each id splits into the file path, the start line and column, the operator and a number, and all 55 ids are unique.

Context

Checked end to end by e2e:mutant_ids_name_file_line_column_operator, which runs Mutalog as a separate process.