202 lines
6.2 KiB
Python
202 lines
6.2 KiB
Python
"""Pytest test generator."""
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import re
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from pathlib import Path
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from typing import Any, Dict, List, Optional
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from jinja2 import Environment, FileSystemLoader, TemplateSyntaxError, UndefinedError
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from ..core import SpecParser, AuthConfig
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from ..core.exceptions import TemplateRenderError
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class PytestGenerator:
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"""Generate pytest-compatible integration test templates."""
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def __init__(
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self,
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spec_parser: SpecParser,
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output_dir: str = "tests",
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mock_server_url: str = "http://localhost:4010",
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):
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"""Initialize the pytest generator.
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Args:
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spec_parser: The OpenAPI specification parser.
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output_dir: Directory for generated test files.
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mock_server_url: URL of the mock server for testing.
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"""
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self.spec_parser = spec_parser
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self.output_dir = Path(output_dir)
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self.mock_server_url = mock_server_url
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self.env = Environment(
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loader=FileSystemLoader(
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str(Path(__file__).parent.parent.parent / "templates" / "pytest")
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),
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trim_blocks=True,
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lstrip_blocks=True,
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)
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def generate(self, output_file: Optional[str] = None) -> List[Path]:
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"""Generate pytest test files.
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Args:
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output_file: Optional specific output file path.
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Returns:
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List of generated file paths.
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"""
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self.output_dir.mkdir(parents=True, exist_ok=True)
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endpoints = self.spec_parser.get_endpoints()
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info = self.spec_parser.get_info()
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context = {
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"api_title": info["title"],
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"api_version": info["version"],
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"endpoints": endpoints,
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"mock_server_url": self.mock_server_url,
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"security_schemes": self.spec_parser.get_security_schemes(),
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"definitions": self.spec_parser.get_definitions(),
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}
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generated_files = []
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try:
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template = self.env.get_template("test_base.py.j2")
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content = template.render(context)
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if output_file:
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output_path = Path(output_file)
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else:
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safe_name = re.sub(r"[^a-zA-Z0-9_]", "_", info["title"].lower())
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output_path = self.output_dir / f"test_{safe_name}.py"
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output_path.parent.mkdir(parents=True, exist_ok=True)
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output_path.write_text(content)
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generated_files.append(output_path)
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except (TemplateSyntaxError, UndefinedError) as e:
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raise TemplateRenderError(f"Failed to render pytest template: {e}")
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return generated_files
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def generate_endpoint_tests(self, endpoint_path: str, method: str) -> str:
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"""Generate test for a specific endpoint.
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Args:
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endpoint_path: The API endpoint path.
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method: The HTTP method.
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Returns:
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String containing the test code.
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"""
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endpoints = self.spec_parser.get_endpoints()
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for endpoint in endpoints:
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if endpoint["path"] == endpoint_path and endpoint["method"] == method.lower():
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return self._generate_single_test(endpoint)
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return ""
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def _generate_single_test(self, endpoint: Dict[str, Any]) -> str:
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"""Generate test code for a single endpoint.
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Args:
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endpoint: The endpoint dictionary.
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Returns:
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String containing the test code.
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"""
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test_name = self._generate_test_name(endpoint)
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params = self._generate_parameters(endpoint)
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auth_headers = self._generate_auth_headers(endpoint)
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test_code = f'''
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def test_{test_name}(base_url, {params}):
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"""Test {endpoint["summary"] or endpoint["path"]} endpoint."""
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url = f"{{base_url}}{endpoint['path']}"
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headers = {{"Content-Type": "application/json"}}
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{auth_headers}
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response = requests.{endpoint['method']}(url, json={{}} if method == "POST" else None, headers=headers)
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assert response.status_code in [200, 201, 204]
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'''
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return test_code
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def _generate_test_name(self, endpoint: Dict[str, Any]) -> str:
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"""Generate a valid test function name.
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Args:
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endpoint: The endpoint dictionary.
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Returns:
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A valid Python function name.
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"""
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path = endpoint["path"]
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method = endpoint["method"]
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name = re.sub(r"[^a-zA-Z0-9]", "_", path.strip("/"))
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name = re.sub(r"_+/", "_", name)
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name = re.sub(r"_+$", "", name)
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return f"{method}_{name}" if name else f"{method}_default"
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def _generate_parameters(self, endpoint: Dict[str, Any]) -> str:
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"""Generate parameters for test function.
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Args:
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endpoint: The endpoint dictionary.
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Returns:
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String containing parameter declarations.
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"""
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params = []
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for param in endpoint.get("parameters", []):
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param_name = param["name"]
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if param["in"] == "path":
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params.append(f'{param_name}="test_{param_name}"')
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elif param["in"] == "query":
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params.append(f"{param_name}=None")
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return ", ".join(params)
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def _generate_auth_headers(self, endpoint: Dict[str, Any]) -> str:
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"""Generate authentication headers for endpoint.
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Args:
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endpoint: The endpoint dictionary.
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Returns:
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String containing header assignments.
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"""
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security_requirements = endpoint.get("security", [])
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if not security_requirements:
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return ""
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schemes = self.spec_parser.get_security_schemes()
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auth_config = AuthConfig()
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try:
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auth_config.build_from_spec(schemes, security_requirements)
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except Exception:
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return ""
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headers = []
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for scheme_name in security_requirements[0].keys():
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method = auth_config.get_auth_method(scheme_name)
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if method:
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if method["type"] == "apiKey":
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headers.append(f'headers["{method["header_name"]}"] = "test_api_key"')
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elif method["type"] == "bearer":
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headers.append('headers["Authorization"] = "Bearer test_token"')
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return "\n ".join(headers) if headers else ""
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