fix the version check

elasticgit/models.py

@@ -175,13 +175,18 @@ class ModelVersionField(DictField):
         }
     }
 
+    def compatible_version(self, own_version, check_version):
+        own = map(int, own_version.split('.'))
+        check = map(int, check_version.split('.'))
+        return own >= check
+
     def validate(self, config):
         config._config_data.setdefault(
             self.name, elasticgit.version_info.copy())
         value = self.get_value(config)
         current_version = elasticgit.version_info['package_version']
         package_version = value['package_version']
-        if (current_version < package_version):
+        if not self.compatible_version(current_version, package_version):
             raise ConfigError(
                 'Got a version from the future, expecting: %r got %r' % (
                     current_version, package_version))

elasticgit/tests/test_models.py

@@ -1,5 +1,6 @@
 from elasticgit.tests.base import ModelBaseTest
-from elasticgit.models import ConfigError, IntegerField, TextField
+from elasticgit.models import (
+    ConfigError, IntegerField, TextField, ModelVersionField)
 
 import elasticgit
 
@@ -79,3 +80,9 @@ def test_update(self):
         self.assertEqual(new_model.name, model.name)
         self.assertTrue(model.is_read_only())
         self.assertFalse(new_model.is_read_only())
+
+    def test_version_check(self):
+        field = ModelVersionField('ModelVersionField')
+        self.assertTrue(field.compatible_version('0.2.10', '0.2.9'))
+        self.assertTrue(field.compatible_version('0.2.10', '0.2.10'))
+        self.assertFalse(field.compatible_version('0.2.9', '0.2.10'))