add dir revert api & update file revert api

tests/api/test_dir_revert.py

@@ -0,0 +1,63 @@
+import os
+import json
+from seaserv import seafile_api
+from django.core.urlresolvers import reverse
+from seahub.test_utils import BaseTestCase
+
+class DirRevertTest(BaseTestCase):
+
+    def setUp(self):
+        self.repo_id = self.repo.id
+        self.folder_path = self.folder
+        self.parent_dir = os.path.dirname(self.folder_path)
+        self.folder_name = os.path.basename(self.folder_path)
+        self.username = self.user.username
+
+        self.url = reverse('api2-dir-revert', args=[self.repo_id])
+
+    def tearDown(self):
+        self.remove_repo()
+
+    def delete_dir(self):
+        seafile_api.del_file(self.repo_id, self.parent_dir,
+            self.folder_name, self.username)
+
+    def get_trash_dir_commit_id(self):
+        deleted_file = seafile_api.get_deleted(self.repo_id, 0, '/', None)
+
+        return deleted_file[0].commit_id
+
+    def get_lib_folder_name(self):
+
+        url = reverse('list_lib_dir', args=[self.repo_id])
+        resp = self.client.get(url, HTTP_X_REQUESTED_WITH='XMLHttpRequest')
+        json_resp = json.loads(resp.content)
+
+        if len(json_resp['dirent_list']) == 0:
+            return None
+
+        return json_resp['dirent_list'][0]['obj_name']
+
+    def test_can_revert_dir(self):
+        self.login_as(self.user)
+
+        # check file exist when init
+        assert self.get_lib_folder_name() == self.folder_name
+
+        # delete
+        self.delete_dir()
+
+        # check file not exist after delete
+        assert self.get_lib_folder_name() == None
+
+        # get commit_id of deleted file
+        commit_id = self.get_trash_dir_commit_id()
+
+        resp = self.client.put(self.url,
+            "p=%s&commit_id=%s" % (self.folder_path, commit_id),
+            'application/x-www-form-urlencoded',
+        )
+        self.assertEqual(200, resp.status_code)
+
+        # check file has been reverted
+        assert self.get_lib_folder_name() == self.folder_name