fix pagination of tags in API

Fixes #461.

endpoints/api/tag.py

@@ -43,7 +43,7 @@ class ListRepositoryTags(RepositoryParamResource):
 
     specific_tag = args.get('specificTag') or None
 
-    page = min(1, args.get('start', 1))
+    page = max(1, args.get('page', 1))
     limit = min(100, max(1, args.get('limit', 50)))
 
     # Note: We ask for limit+1 here, so we can check to see if there are

test/test_api_usage.py

@@ -2079,6 +2079,7 @@ class TestRevertTag(ApiTestCase):
     self.assertEquals(previous_image_id, json['tags'][0]['docker_image_id'])
 
 
+
 class TestListAndDeleteTag(ApiTestCase):
   def test_listdeletecreateandmovetag(self):
     self.login(ADMIN_ACCESS_USER)
@@ -2166,6 +2167,19 @@ class TestListAndDeleteTag(ApiTestCase):
 
     self.assertEquals(prod_images, json['images'])
 
+  def test_listtagpagination(self):
+    self.login(ADMIN_ACCESS_USER)
+
+    for i in xrange(1, 100):
+      model.tag.create_or_update_tag(ADMIN_ACCESS_USER, "complex", "tag" + str(i),
+                                     "1d8cbff4e0363d1826c6a0b64ef0bc501d8cbff4e0363d1826c6a0b64ef0bc50")
+
+    json = self.getJsonResponse(ListRepositoryTags,
+                                params=dict(repository=ADMIN_ACCESS_USER + '/complex', page=2))
+
+    # Make sure that we're able to see the second page of results.
+    assert json['page'] == 2
+    assert len(json['tags']) == 50
 
 class TestRepoPermissions(ApiTestCase):
   def listUserPermissions(self, namespace=ADMIN_ACCESS_USER, repo='simple'):