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https://github.com/pacnpal/thrillwiki_django_no_react.git
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Add comprehensive tests for Parks API and models
- Implemented extensive test cases for the Parks API, covering endpoints for listing, retrieving, creating, updating, and deleting parks. - Added tests for filtering, searching, and ordering parks in the API. - Created tests for error handling in the API, including malformed JSON and unsupported methods. - Developed model tests for Park, ParkArea, Company, and ParkReview models, ensuring validation and constraints are enforced. - Introduced utility mixins for API and model testing to streamline assertions and enhance test readability. - Included integration tests to validate complete workflows involving park creation, retrieval, updating, and deletion.
This commit is contained in:
pacnpal
172
core/api/exceptions.py
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172
core/api/exceptions.py
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"""
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Custom exception handling for ThrillWiki API.
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Provides standardized error responses following Django styleguide patterns.
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"""
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import logging
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from typing import Any, Dict, Optional
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from django.http import Http404
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from django.core.exceptions import PermissionDenied, ValidationError as DjangoValidationError
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from rest_framework import status
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from rest_framework.response import Response
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from rest_framework.views import exception_handler
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from rest_framework.exceptions import ValidationError as DRFValidationError, NotFound, PermissionDenied as DRFPermissionDenied
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from ..exceptions import ThrillWikiException
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from ..logging import get_logger, log_exception
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logger = get_logger(__name__)
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def custom_exception_handler(exc: Exception, context: Dict[str, Any]) -> Optional[Response]:
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"""
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Custom exception handler for DRF that provides standardized error responses.
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Returns:
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Response with standardized error format or None to fallback to default handler
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"""
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# Call REST framework's default exception handler first
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response = exception_handler(exc, context)
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if response is not None:
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# Standardize the error response format
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custom_response_data = {
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'status': 'error',
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'error': {
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'code': _get_error_code(exc),
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'message': _get_error_message(exc, response.data),
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'details': _get_error_details(exc, response.data),
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},
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'data': None,
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}
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# Add request context for debugging
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if hasattr(context.get('request'), 'user'):
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custom_response_data['error']['request_user'] = str(context['request'].user)
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# Log the error for monitoring
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log_exception(logger, exc, context={'response_status': response.status_code}, request=context.get('request'))
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response.data = custom_response_data
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# Handle ThrillWiki custom exceptions
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elif isinstance(exc, ThrillWikiException):
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custom_response_data = {
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'status': 'error',
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'error': exc.to_dict(),
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'data': None,
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}
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log_exception(logger, exc, context={'response_status': exc.status_code}, request=context.get('request'))
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response = Response(custom_response_data, status=exc.status_code)
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# Handle specific Django exceptions that DRF doesn't catch
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elif isinstance(exc, DjangoValidationError):
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custom_response_data = {
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'status': 'error',
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'error': {
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'code': 'VALIDATION_ERROR',
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'message': 'Validation failed',
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'details': _format_django_validation_errors(exc),
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},
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'data': None,
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}
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log_exception(logger, exc, context={'response_status': status.HTTP_400_BAD_REQUEST}, request=context.get('request'))
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response = Response(custom_response_data, status=status.HTTP_400_BAD_REQUEST)
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elif isinstance(exc, Http404):
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custom_response_data = {
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'status': 'error',
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'error': {
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'code': 'NOT_FOUND',
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'message': 'Resource not found',
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'details': str(exc) if str(exc) else None,
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},
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'data': None,
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}
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log_exception(logger, exc, context={'response_status': status.HTTP_404_NOT_FOUND}, request=context.get('request'))
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response = Response(custom_response_data, status=status.HTTP_404_NOT_FOUND)
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elif isinstance(exc, PermissionDenied):
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custom_response_data = {
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'status': 'error',
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'error': {
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'code': 'PERMISSION_DENIED',
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'message': 'Permission denied',
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'details': str(exc) if str(exc) else None,
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},
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'data': None,
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}
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log_exception(logger, exc, context={'response_status': status.HTTP_403_FORBIDDEN}, request=context.get('request'))
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response = Response(custom_response_data, status=status.HTTP_403_FORBIDDEN)
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return response
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def _get_error_code(exc: Exception) -> str:
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"""Extract or determine error code from exception."""
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if hasattr(exc, 'default_code'):
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return exc.default_code.upper()
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if isinstance(exc, DRFValidationError):
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return 'VALIDATION_ERROR'
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elif isinstance(exc, NotFound):
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return 'NOT_FOUND'
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elif isinstance(exc, DRFPermissionDenied):
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return 'PERMISSION_DENIED'
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return exc.__class__.__name__.upper()
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def _get_error_message(exc: Exception, response_data: Any) -> str:
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"""Extract user-friendly error message."""
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if isinstance(response_data, dict):
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# Handle DRF validation errors
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if 'detail' in response_data:
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return str(response_data['detail'])
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elif 'non_field_errors' in response_data:
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errors = response_data['non_field_errors']
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return errors[0] if isinstance(errors, list) and errors else str(errors)
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elif isinstance(response_data, dict) and len(response_data) == 1:
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key, value = next(iter(response_data.items()))
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if isinstance(value, list) and value:
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return f"{key}: {value[0]}"
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return f"{key}: {value}"
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# Fallback to exception message
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return str(exc) if str(exc) else 'An error occurred'
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def _get_error_details(exc: Exception, response_data: Any) -> Optional[Dict[str, Any]]:
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"""Extract detailed error information for debugging."""
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if isinstance(response_data, dict) and len(response_data) > 1:
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return response_data
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if hasattr(exc, 'detail') and isinstance(exc.detail, dict):
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return exc.detail
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return None
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def _format_django_validation_errors(exc: DjangoValidationError) -> Dict[str, Any]:
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"""Format Django ValidationError for API response."""
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if hasattr(exc, 'error_dict'):
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# Field-specific errors
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return {
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field: [str(error) for error in errors]
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for field, errors in exc.error_dict.items()
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}
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elif hasattr(exc, 'error_list'):
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# Non-field errors
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return {
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'non_field_errors': [str(error) for error in exc.error_list]
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}
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return {'non_field_errors': [str(exc)]}
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# Removed _log_api_error - using centralized logging instead
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