check all methods implemented

unittests.py

@@ -13,6 +13,22 @@ METHODS = ["quota", "largest_remainder", "dhondt",
 
 class TestApprovalMultiwinner(unittest.TestCase):
 
+    def test_all_implemented(self):
+        ALLMETHODSSTRINGS = ["quota", "lrm", "hamilton", "largest_remainder",
+                             "dhondt", "jefferson", "saintelague", "webster",
+                             "huntington", "hill", "adams", "dean",
+                             "smallestdivisor", "harmonicmean",
+                             "equalproportions", "majorfractions",
+                             "greatestdivisors"]
+
+        votes = [1]
+        seats = 1
+        for method in ALLMETHODSSTRINGS:
+            result = apportionment.method(method, votes,
+                                          seats, verbose=False)
+            self.assertEqual(result, [1],
+                             msg=method + " does not exist")
+
     def test_weak_proportionality(self):
         self.longMessage = True
 
@@ -46,6 +62,30 @@ class TestApprovalMultiwinner(unittest.TestCase):
             self.assertEqual(result, [1, 0, 0, 0, 1, 1],
                              msg=method + " failed")
 
+    # example taken from 
+    # Balinski, M. L., & Young, H. P. (1975).
+    # The quota method of apportionment.
+    # The American Mathematical Monthly, 82(7), 701-730.
+    def test_balinski_young_example(self):
+        self.longMessage = True
+
+        RESULTS = {"quota": [52, 44, 2, 1, 1],
+                   "largest_remainder": [51, 44, 2, 2, 1],
+                   "dhondt": [52, 45, 1, 1, 1],
+                   "saintelague": [51, 43, 2, 2, 2],
+                   "huntington": [51, 43, 2, 2, 2],
+                   "adams": [51, 43, 2, 2, 2],
+                   "dean": [51, 43, 2, 2, 2]
+                   }
+
+        votes = [5117, 4400, 162, 161, 160]
+        seats = 100
+        for method in RESULTS.keys():
+            result = apportionment.method(method, votes,
+                                          seats, verbose=False)
+            self.assertEqual(result, RESULTS[method],
+                             msg=method + " failed")
+
 
 if __name__ == '__main__':
     unittest.main()