Fix connections validation

src/superannotate/__init__.py

@@ -3,7 +3,7 @@
 import sys
 
 
-__version__ = "4.4.36dev1"
+__version__ = "4.4.35dev2"
 
 
 os.environ.update({"sa_version": __version__})

src/superannotate/lib/core/usecases/annotations.py

@@ -2101,9 +2101,8 @@ def execute(self):
                 if categorization_enabled:
                     item_id_category_map = {}
                     for item_name in uploaded_annotations:
-                        category = (
-                            name_annotation_map[item_name]["metadata"]
-                            .get("item_category", None)
+                        category = name_annotation_map[item_name]["metadata"].get(
+                            "item_category", None
                         )
                         if category:
                             item_id_category_map[name_item_map[item_name].id] = category

src/superannotate/lib/core/usecases/projects.py

@@ -1,5 +1,6 @@
 import decimal
 import logging
+import math
 from collections import defaultdict
 from typing import List
 
@@ -608,10 +609,14 @@ def validate_project_type(self):
     def validate_connections(self):
         if not self._connections:
             return
-
-        if len(self._connections) > len(self._steps):
+        if not all([len(i) == 2 for i in self._connections]):
+            raise AppException("Invalid connections.")
+        steps_count = len(self._steps)
+        if len(self._connections) > max(
+            math.factorial(steps_count) / (2 * math.factorial(steps_count - 2)), 1
+        ):
             raise AppValidationException(
-                "Invalid connections: more connections than steps."
+                "Invalid connections: duplicates in a connection group."
             )
 
         possible_connections = set(range(1, len(self._steps) + 1))

tests/integration/steps/test_steps.py

@@ -1,12 +1,5 @@
-import json
-import os
-import tempfile
-from pathlib import Path
-
-from numpy.ma.core import arange
 from src.superannotate import AppException
 from src.superannotate import SAClient
-from tests import DATA_SET_PATH
 from tests.integration.base import BaseTestCase
 
 sa = SAClient()
@@ -236,7 +229,8 @@ def test_create_invalid_connection(self):
             sa.set_project_steps(
                 *args,
                 connections=[
-                    [1, 2, 1],
+                    [1, 2],
+                    [2, 1],
                 ]
             )
         with self.assertRaisesRegexp(