add validate_territory validator

api/validators.py

@@ -1,4 +1,5 @@
 # coding=UTF-8
+from api.models.market import iter_markets
 from api.exceptions import ValidationError
 
 
@@ -7,3 +8,10 @@ def validate_keys_exists(obj, *keys):
         if not key in obj:
             raise ValidationError('No {} is specified'.format(key))
     return True
+
+
+def validate_territory(value):
+    for market in iter_markets():
+        if market.territory == value:
+            return True
+    raise ValidationError('{} is not a valid territory'.format(value))

tests/test_validators.py

@@ -1,5 +1,5 @@
 import unittest2
-from api.validators import ValidationError, validate_keys_exists
+from api.validators import ValidationError, validate_keys_exists, validate_territory
 
 
 class TestValidation(unittest2.TestCase):
@@ -11,3 +11,7 @@ class TestValidation(unittest2.TestCase):
             ValidationError, validate_keys_exists, obj, 'a', 'b', 'c')
         self.assertTrue(validate_keys_exists(obj, 'a'))
         self.assertTrue(validate_keys_exists(obj, 'a', 'b'))
+
+    def test_validate_territory(self):
+        self.assertTrue(validate_territory('SE'))
+        self.assertRaises(ValidationError, validate_territory, 'unknown')