Function layers_to_string

src/db/unit_tests/dbStreamLayerTests.cc:338–352

}

static std::string layers_to_string (const db::Layout &ly)
{
  std::string s;

  for (unsigned int i = 0; i < ly.layers (); ++i) {
    if (ly.is_valid_layer (i)) {
      if (! s.empty ()) {
        s += ",";
      }
      s += ly.get_properties (i).to_string ();
    }
  }

  return s;
}

TEST(6)
{