fix current iteration validation error

src/rules_validation_api/app.py

@@ -47,10 +47,8 @@ def main() -> None:  # pragma: no cover
             json_data = json.load(file)
             result = RulesValidation(**json_data)
             sys.stdout.write(f"{GREEN}Valid Config{RESET}\n")
-            sys.stdout.write(
-                f"{YELLOW}Current Iteration Number is {RESET}{GREEN}"
-                f"{result.campaign_config.current_iteration.iteration_number}{RESET}\n"
-            )
+
+            display_current_iteration(result)
 
             # Group by class
             grouped = defaultdict(list)
@@ -75,5 +73,20 @@ def main() -> None:  # pragma: no cover
         sys.stderr.write(f"{YELLOW}{clean}{RESET}\n")
 
 
+def display_current_iteration(result: RulesValidation) -> None:
+    no_of_iterations = 0
+    try:
+        no_of_iterations = len(result.campaign_config.iterations)
+        current = result.campaign_config.current_iteration
+    except StopIteration:
+        current = None
+    if current is None:
+        sys.stdout.write(f"{YELLOW}No active iteration could be determined{RESET}\n")
+        sys.stdout.write(f"{YELLOW}Total iterations configured: {RESET}{GREEN}{no_of_iterations}{RESET}\n")
+    else:
+        sys.stdout.write(f"{YELLOW}Current Iteration Number: {RESET}{GREEN}{current.iteration_number}{RESET}\n")
+        sys.stdout.write(f"{YELLOW}Total iterations configured: {RESET}{GREEN}{no_of_iterations}{RESET}\n")
+
+
 if __name__ == "__main__":  # pragma: no cover
     main()

tests/unit/validation/test_app.py

@@ -1,6 +1,10 @@
+import sys
+from io import StringIO
+from unittest.mock import Mock, PropertyMock
+
 from pydantic import BaseModel, ValidationError
 
-from rules_validation_api.app import refine_error
+from rules_validation_api.app import display_current_iteration, refine_error
 
 
 def _raise_validation_error(model_cls, **kwargs) -> ValidationError:
@@ -70,3 +74,50 @@ class Model(BaseModel):
     expected_no_lines = 3
     assert len(lines) == expected_no_lines
     assert lines[0].startswith("❌Validation Error:")
+
+
+def test_no_current_iteration():
+    # Arrange
+    result = Mock()
+    result.campaign_config = Mock()
+
+    # iterations must be a list, not a Mock
+    result.campaign_config.iterations = []
+
+    # current_iteration should raise StopIteration
+    type(result.campaign_config).current_iteration = PropertyMock(side_effect=StopIteration)
+
+    captured = StringIO()
+    sys.stdout = captured
+
+    # Act
+    display_current_iteration(result)
+
+    # Reset stdout
+    sys.stdout = sys.__stdout__
+
+    # Assert
+    assert "No active iteration could be determined" in captured.getvalue()
+
+
+def test_current_iteration_exists():
+    # Arrange
+    mock_iteration = Mock()
+    mock_iteration.iteration_number = 7
+
+    result = Mock()
+    result.campaign_config = Mock()
+
+    result.campaign_config.iterations = [mock_iteration]
+
+    type(result.campaign_config).current_iteration = PropertyMock(return_value=mock_iteration)
+
+    captured = StringIO()
+    sys.stdout = captured
+
+    display_current_iteration(result)
+
+    sys.stdout = sys.__stdout__
+
+    assert "Current Iteration Number:" in captured.getvalue()
+    assert "7" in captured.getvalue()