Factor out check for need of commit

trans/models.py

@@ -406,15 +406,25 @@ class Translation(models.Model):
             m = settings.COMMIT_MESSAGE
             )
 
-    def git_commit(self, author, force_commit = False):
+    def git_needs_commit(self, gitrepo = None):
         '''
-        Wrapper for commiting translation to git.
+        Checks whether there are some not commited changes.
         '''
-        gitrepo = self.subproject.get_repo()
+        if gitrepo is None:
+            gitrepo = self.subproject.get_repo()
         status = gitrepo.git.status('--porcelain', '--', self.filename)
         if status == '':
             # No changes to commit
             return False
+        return True
+
+    def git_commit(self, author, force_commit = False):
+        '''
+        Wrapper for commiting translation to git.
+        '''
+        gitrepo = self.subproject.get_repo()
+        if not self.git_needs_commit(gitrepo)
+            return False
         if not force_commit and settings.LAZY_COMMITS:
             logger.info('Delaying commiting %s as %s', self.filename, author)
             return False