class Rails::TestUnit::Runner

def attach_before_load_options(opts)

Experimental RBS support (using type sampling data from the type_fusion project). 

def attach_before_load_options: (OptionParser opts) -> OptionParser

This signature was generated using 3 samples from 1 application. 

def attach_before_load_options(opts)
  opts.on("--warnings", "-w", "Run with Ruby warnings enabled") { }
  opts.on("-e", "--environment ENV", "Run tests in the ENV environment") { }
end