buildRationale method

String? buildRationale(
  1. List<Assertion> assertions
)

Subclasses may override to customize the rationale produced on failure; default joins all failed assertion descriptions.

Implementation

String? buildRationale(List<Assertion> assertions) {
  final failed = assertions.where((a) => !a.passed).toList();
  if (failed.isEmpty) return null;
  return failed.map((a) => '- ${a.description}').join('\n');
}