message: das.cli: Add defaulted test.
diff: @@ -224,6 +224,19 @@ defaults()
  elle::das::cli::call(proto, f, {"--baz", "23", "--foo", "01"}), "0123");
  }
  +static
  +void
  +defaulted()
  +{
  + auto const f = elle::das::named::function(
  + [] (elle::Defaulted<bool> b) { return std::make_pair(bool(b), b.get()); },
  + foo = elle::defaulted(false));
  + BOOST_CHECK_EQUAL(
  + elle::das::cli::call(f, {}), std::make_pair(false, false));
  + BOOST_CHECK_EQUAL(
  + elle::das::cli::call(f, {"--foo"}), std::make_pair(true, true));
  +}
  +
  static
  void
  flag()
  @@ -442,6 +455,7 @@ ELLE_TEST_SUITE()
  conversions->add(BOOST_TEST_CASE(multiple_integers));
  }
  master.add(BOOST_TEST_CASE(defaults));
  + master.add(BOOST_TEST_CASE(defaulted));
  master.add(BOOST_TEST_CASE(flag));
  {
  auto suite = BOOST_TEST_SUITE("short_options");
  