add a check for presence of size_dist

src/aero_mode.hpp

@@ -145,6 +145,10 @@ struct AeroMode {
  throw std::runtime_error("mass_frac value must be a list of single-element dicts");
  if (!InputJSONResource::unique_keys(mass_frac))
  throw std::runtime_error("mass_frac keys must be unique");
+ if (mode["mode_type"] == "sampled") {
+ if (mode.find("size_dist") == mode.end())
+ throw std::runtime_error("size_dist key must be set for mode_type=sampled");
+ }
  }
 
  static auto get_num_conc(const AeroMode &self){

tests/test_aero_mode.py

@@ -290,6 +290,20 @@ def test_segfault_case(): # TODO #319
  print(fishy_ctor_arg)
  ppmc.AeroMode(aero_data, fishy_ctor_arg)
 
+ @staticmethod
+ def test_sampled_without_size_dist():
+ # arrange
+ aero_data = ppmc.AeroData(AERO_DATA_CTOR_ARG_MINIMAL)
+ fishy_ctor_arg = copy.deepcopy(AERO_MODE_CTOR_LOG_NORMAL)
+ fishy_ctor_arg["test_mode"]["mode_type"] = "sampled"
+
+ # act
+ with pytest.raises(Exception) as exc_info:
+ ppmc.AeroMode(aero_data, fishy_ctor_arg)
+
+ # assert
+ assert str(exc_info.value) == "size_dist key must be set for mode_type=sampled"
+
  @staticmethod
  def test_sampled():
  # arrange