Fix error types

Author: uvchik

tests/test_wind_farm.py

@@ -48,10 +48,11 @@ def test_initialization_dataframe(self):
 
     def test_initialization_1(self):
         """test catching error when wind_turbine_fleet not provided as list"""
-        msg = 'Wind turbine fleet not provided properly.'
+        msg = 'Wind turbine must be provided as WindTurbine object'
         with pytest.raises(ValueError, match=msg):
-            WindFarm(wind_turbine_fleet=[{'wind_turbine': 'turbine',
-                                          'number_of_turbines': 2}, 'dummy'])
+            WindFarm(wind_turbine_fleet={'wind_turbine': 'turbine',
+                                         'number_of_turbines': 2},
+                     name='dummy')
 
     def test_initialization_2(self):
         """test catching error when WindTurbine in wind_turbine_fleet
@@ -71,7 +72,7 @@ def test_initialization_3(self):
                                    WindTurbine(**self.test_turbine_2)],
                   'number_of_turbines': [3, 2]})
         msg = 'Missing wind_turbine key/column in wind_turbine_fleet'
-        with pytest.raises(ValueError, match=msg):
+        with pytest.raises(KeyError, match=msg):
             WindFarm(wind_turbine_fleet=wind_turbine_fleet)
 
     def test_initialization_4(self, recwarn):

windpowerlib/wind_farm.py

@@ -135,8 +135,8 @@ def check_and_complete_wind_turbine_fleet(self):
                         'Wind turbine must be provided as WindTurbine object '
                         'but was provided as {}.'.format(type(turbine)))
         except KeyError:
-            raise ValueError('Missing wind_turbine key/column in '
-                             'wind_turbine_fleet parameter.')
+            raise KeyError('Missing wind_turbine key/column in '
+                           'wind_turbine_fleet parameter.')
 
         # add columns for number of turbines and total capacity if they don't
         # yet exist
@@ -161,7 +161,7 @@ def check_and_complete_wind_turbine_fleet(self):
                 else:
                     self.wind_turbine_fleet.loc[ix, 'number_of_turbines'] = \
                         number_of_turbines
-            except ValueError:
+            except TypeError:
                 raise ValueError(msg.format(row['wind_turbine']))
 
         # calculate total capacity if necessary and check that total capacity
@@ -172,7 +172,7 @@ def check_and_complete_wind_turbine_fleet(self):
                     self.wind_turbine_fleet.loc[ix, 'total_capacity'] = \
                         row['number_of_turbines'] * \
                         row['wind_turbine'].nominal_power
-                except ValueError:
+                except TypeError:
                     raise ValueError(
                         'Total capacity of turbines of type {turbine} cannot '
                         'be deduced. Please check if the nominal power of the '