Adapt and add tests

tests/test_wind_turbine.py

@@ -1,18 +1,20 @@
-import pandas as pd
-from pandas.util.testing import assert_series_equal
 import pytest
+import os
 
-from windpowerlib.wind_turbine import read_turbine_data, WindTurbine
+from windpowerlib.wind_turbine import (get_turbine_data_from_file, WindTurbine,
+                                       get_turbine_types)
 
 class TestWindTurbine:
 
     def test_error_raising(self):
+        source = os.path.join(os.path.dirname(__file__), '../example/data',
+                              'example_power_curves.csv')
         self.test_turbine_data = {'hub_height': 100,
                                   'rotor_diameter': 80,
                                   'name': 'turbine_not_in_file',
                                   'fetch_curve': 'power_curve',
-                                  'data_source': 'example_power_curves.csv'}
-        # Raise system exit
+                                  'data_source': source}
+        # Raise system exit due to turbine type not in file
         with pytest.raises(SystemExit):
             test_turbine = WindTurbine(**self.test_turbine_data)
 
@@ -22,8 +24,17 @@ def test_error_raising(self):
         with pytest.raises(ValueError):
             test_turbine = WindTurbine(**self.test_turbine_data)
 
+        # Raise KeyError due to turbine type not in oedb
+        self.test_turbine_data['fetch_curve'] = 'power_curve'
+        self.test_turbine_data['data_source'] = 'oedb'
+        with pytest.raises(KeyError):
+            test_turbine = WindTurbine(**self.test_turbine_data)
+
+
     def test_read_turbine_data(self):
         # Raise FileNotFoundError due to missing
         with pytest.raises(FileNotFoundError):
-            read_turbine_data(filename='not_existent')
+            get_turbine_data_from_file(turbine_type='...', file_='not_existent') # todo test turbine type not found?
 
+    def test_get_turbine_types(self):
+        get_turbine_types(print_out=False)