8.0 camt statement (#83)

* [FIX] CAMT Statement id may not be unique over time

* [ENH] Add tests for improved camt statement id uniqueness.

account_bank_statement_import_camt/camt.py

@@ -200,8 +200,12 @@ class CamtParser(object):
             transaction = statement.create_transaction()
             self.parse_transaction(ns, entry_node, transaction)
         if statement['transactions']:
-            statement.date = datetime.strptime(
-                statement['transactions'][0].execution_date, "%Y-%m-%d")
+            execution_date = statement['transactions'][0].execution_date
+            statement.date = datetime.strptime(execution_date, "%Y-%m-%d")
+            # Prepend date of first transaction to improve id uniquenes
+            if execution_date not in statement.statement_id:
+                statement.statement_id = "%s-%s" % (
+                    execution_date, statement.statement_id)
         return statement
 
     def check_version(self, ns, root):

account_bank_statement_import_camt/tests/test_import_bank_statement.py

@@ -37,7 +37,7 @@ class TestImport(TestStatementFile):
         ]
         self._test_statement_import(
             'account_bank_statement_import_camt', 'test-camt053.xml',
-            '1234Test/1',
+            '2014-01-05-1234Test/1',
             local_account='NL77ABNA0574908765',
             start_balance=15568.27, end_balance=15121.12,
             transactions=transactions
@@ -47,6 +47,6 @@ class TestImport(TestStatementFile):
         """Test import of multiple statements from zip file."""
         self._test_statement_import(
             'account_bank_statement_import_camt', 'test-camt053.zip',
-            '1234Test/2',  # Only name of first statement
+            '2014-02-05-1234Test/2',  # Only name of first statement
             local_account='NL77ABNA0574908765',
         )