module SimpleCov::CommandGuesser

def from_command_line_options
  case original_run_command
  when /test\/functional\//, /test\/\{.*functional.*\}\//
    "Functional Tests"
  when /test\/integration\//
    "Integration Tests"
  when /test\//
    "Unit Tests"
  when /spec/
    "RSpec"
  when /cucumber/, /features/
    "Cucumber Features"
  end
end

def from_defined_constants
  # If the command regexps fail, let's try checking defined constants.
  if defined?(RSpec)
    "RSpec"
  elsif defined?(Test::Unit)
    "Unit Tests"
  elsif defined?(Minitest)
    "Minitest"
  elsif defined?(MiniTest)
    "MiniTest"
  else
    # TODO: Provide link to docs/wiki article
    warn "SimpleCov failed to recognize the test framework and/or suite used. Please specify manually using SimpleCov.command_name 'Unit Tests'."
    "Unknown Test Framework"
  end
end

def from_env
  # If being run from inside parallel_tests set the command name according to the process number
  return unless ENV["PARALLEL_TEST_GROUPS"] && ENV["TEST_ENV_NUMBER"]
  number = ENV["TEST_ENV_NUMBER"]
  number = "1" if number.empty?
  "(#{number}/#{ENV['PARALLEL_TEST_GROUPS']})"
end

def guess
  from_env || from_command_line_options || from_defined_constants
end