help.rb

INVALID_OPTIONS = { name: 1,
                    arm: 1,
                    stop_index: 1,
                    prestress: 1,
                    begin_percentage: 1,
                    time_values: [100, 30, 50, 500, 200]}
                    
OPTIONS = { name: "BK100",
            arm: 0.25,
            stop_index: 0.5,
            prestress: 0.025,
            begin_percentage: 0.025,
            time_values: [0, 30, 50, 100, 200]}

helpo.rb

assert_raises ArgumentError do
  @instance.kincom(FILE, OPTIONS.merge!(arm: 1))
end

# => Succees.


INVALID_OPTIONS.each do |key, value|
  assert_raises ArgumentError do
    @instance.kincom(FILE, OPTIONS.merge(key: value))
  end
end

# => Fails.