Test Case: python-instruct-1727

  1import requests  2​  3def test_login_functionality(base_url, valid_username, valid_password, invalid_username, invalid_password, expected_error_message, expected_success_message):  4    """  5    Tests a web application's login functionality.  6​  7    Args:  8        base_url (str): The base URL of the web application.  9        valid_username (str): A valid username for login. 10        valid_password (str): A valid password for login. 11        invalid_username (str): An invalid username for login. 12        invalid_password (str): An invalid password for login. 13        expected_error_message (str): The expected error message for failed login. 14        expected_success_message (str): The expected message or indicator of successful login. 15​ 16    Returns: 17        dict: A dictionary containing the results of the login tests. 18              Keys are 'invalid_login_test' and 'valid_login_test'. 19              Values are booleans indicating success or failure. 20    """ 21    results = {} 22​ 23    # Test with invalid username and password 24    try: 25        login_url = f"{base_url}/login"  # Assuming '/login' is the login endpoint 26        payload_invalid = { 27            'username': invalid_username, 28            'password': invalid_password 29        } 30        response_invalid = requests.post(login_url, data=payload_invalid) 31        response_invalid.raise_for_status()  # Raise an exception for bad status codes 32​ 33        if expected_error_message in response_invalid.text: 34            results['invalid_login_test'] = True 35        else: 36            results['invalid_login_test'] = False 37            print(f"Invalid login test failed: Expected error message '{expected_error_message}' not found in response.") 38            print(f"Response text: {response_invalid.text[:500]}...") # Print first 500 chars of response 39​ 40    except requests.exceptions.RequestException as e: 41        results['invalid_login_test'] = False 42        print(f"Error during invalid login test: {e}") 43​ 44    # Test with valid username and password 45    try: 46        login_url = f"{base_url}/login"  # Assuming '/login' is the login endpoint 47        payload_valid = { 48            'username': valid_username, 49            'password': valid_password 50        } 51        response_valid = requests.post(login_url, data=payload_valid) 52        response_valid.raise_for_status()  # Raise an exception for bad status codes 53​ 54        # This check is highly dependent on how the application indicates success. 55        # It could be a redirect, a specific message in the HTML, or a JSON response. 56        # We'll assume a simple text check for demonstration. 57        if expected_success_message in response_valid.text: 58            results['valid_login_test'] = True 59        else: 60            results['valid_login_test'] = False 61            print(f"Valid login test failed: Expected success indicator '{expected_success_message}' not found in response.") 62            print(f"Response text: {response_valid.text[:500]}...") # Print first 500 chars of response 63​ 64    except requests.exceptions.RequestException as e: 65        results['valid_login_test'] = False 66        print(f"Error during valid login test: {e}") 67​ 68    return results 69​ 70if __name__ == '__main__': 71    # Example Usage: 72    # Replace with your actual web application details 73    APP_BASE_URL = "http://localhost:5000"  # Example: Flask app running locally 74    VALID_USER = "testuser" 75    VALID_PASS = "password123" 76    INVALID_USER = "wronguser" 77    INVALID_PASS = "wrongpass" 78    EXPECTED_ERROR = "Invalid username or password." 79    EXPECTED_SUCCESS = "Welcome, testuser!" # Example: A welcome message after login 80​ 81    # Note: For this example to run, you would need a web application 82    # running at APP_BASE_URL with a '/login' endpoint that accepts 83    # POST requests with 'username' and 'password' fields. 84    # The application should return specific text for failed and successful logins. 85​ 86    print("Starting login functionality tests...") 87    test_results = test_login_functionality( 88        APP_BASE_URL, 89        VALID_USER, 90        VALID_PASS, 91        INVALID_USER, 92        INVALID_PASS, 93        EXPECTED_ERROR, 94        EXPECTED_SUCCESS 95    ) 96​ 97    print("\n--- Test Results ---") 98    if test_results.get('invalid_login_test'): 99        print("Invalid Login Test: PASSED")100    else:101        print("Invalid Login Test: FAILED")102​103    if test_results.get('valid_login_test'):104        print("Valid Login Test: PASSED")105    else:106        print("Valid Login Test: FAILED")

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  1import requests  2from pydantic import BaseModel, Field  3from typing import Dict, Any  4​  5# Define a Pydantic model for expected response data, if applicable.  6# This helps in validating the structure and types of the response.  7class LoginResponse(BaseModel):  8    success: bool  9    message: str 10    user_id: str | None = None 11​ 12def test_login_functionality( 13    login_url: str, 14    invalid_username: str, 15    invalid_password: str, 16    valid_username: str, 17    valid_password: str, 18    expected_invalid_error: str, 19    expected_valid_success_message: str, 20    session: requests.Session = None, 21    headers: Dict[str, str] | None = None, 22    timeout: int = 10, 23) -> Dict[str, Any]: 24    """ 25    Tests a web application's login functionality. 26​ 27    Args: 28        login_url: The URL of the login endpoint. 29        invalid_username: An invalid username to test. 30        invalid_password: An invalid password to test. 31        valid_username: A valid username. 32        valid_password: A valid password. 33        expected_invalid_error: The expected error message for invalid credentials. 34        expected_valid_success_message: The expected success message for valid credentials. 35        session: An optional requests.Session object for persistent connections. 36        headers: An optional dictionary of HTTP headers to send with the request. 37        timeout: The timeout in seconds for the HTTP request. 38​ 39    Returns: 40        A dictionary containing the results of the login tests. 41    """ 42    results = { 43        "invalid_login_attempt": {"status": "not_run", "error": None, "response_text": None}, 44        "valid_login_attempt": {"status": "not_run", "error": None, "response_text": None}, 45    } 46​ 47    if session is None: 48        session = requests.Session() 49​ 50    # Ensure headers are initialized if not provided 51    request_headers = headers.copy() if headers else {} 52    # Prevent potential Host header injection if the URL is dynamic and user-controlled 53    # In a real-world scenario, you might want to validate login_url more strictly. 54​ 55    # --- Test with invalid credentials --- 56    try: 57        payload_invalid = { 58            "username": invalid_username, 59            "password": invalid_password, 60        } 61        # Use POST for login requests, as it's standard practice. 62        # Avoid sending sensitive data in URL parameters. 63        response_invalid = session.post( 64            login_url, 65            json=payload_invalid,  # Use json for sending JSON payloads 66            headers=request_headers, 67            timeout=timeout, 68        ) 69        response_invalid.raise_for_status()  # Raise HTTPError for bad responses (4xx or 5xx) 70​ 71        results["invalid_login_attempt"]["response_text"] = response_invalid.text 72        # Validate response structure if a Pydantic model is defined 73        try: 74            LoginResponse.model_validate(response_invalid.json()) 75        except Exception as e: 76            results["invalid_login_attempt"]["validation_error"] = f"Response validation failed: {e}" 77​ 78        if expected_invalid_error in response_invalid.text: 79            results["invalid_login_attempt"]["status"] = "passed" 80        else: 81            results["invalid_login_attempt"]["status"] = "failed" 82            results["invalid_login_attempt"]["error"] = ( 83                f"Expected error message '{expected_invalid_error}' not found in response." 84            ) 85​ 86    except requests.exceptions.Timeout: 87        results["invalid_login_attempt"]["status"] = "error" 88        results["invalid_login_attempt"]["error"] = "Request timed out." 89    except requests.exceptions.RequestException as e: 90        results["invalid_login_attempt"]["status"] = "error" 91        results["invalid_login_attempt"]["error"] = f"An HTTP error occurred: {e}" 92    except Exception as e: 93        results["invalid_login_attempt"]["status"] = "error" 94        results["invalid_login_attempt"]["error"] = f"An unexpected error occurred: {e}" 95​ 96    # --- Test with valid credentials --- 97    try: 98        payload_valid = { 99            "username": valid_username,100            "password": valid_password,101        }102        response_valid = session.post(103            login_url,104            json=payload_valid,105            headers=request_headers,106            timeout=timeout,107        )108        response_valid.raise_for_status()109​110        results["valid_login_attempt"]["response_text"] = response_valid.text111        # Validate response structure if a Pydantic model is defined112        try:113            LoginResponse.model_validate(response_valid.json())114        except Exception as e:115            results["valid_login_attempt"]["validation_error"] = f"Response validation failed: {e}"116​117        if expected_valid_success_message in response_valid.text:118            results["valid_login_attempt"]["status"] = "passed"119        else:120            results["valid_login_attempt"]["status"] = "failed"121            results["valid_login_attempt"]["error"] = (122                f"Expected success message '{expected_valid_success_message}' not found in response."123            )124​125    except requests.exceptions.Timeout:126        results["valid_login_attempt"]["status"] = "error"127        results["valid_login_attempt"]["error"] = "Request timed out."128    except requests.exceptions.RequestException as e:129        results["valid_login_attempt"]["status"] = "error"130        results["valid_login_attempt"]["error"] = f"An HTTP error occurred: {e}"131    except Exception as e:132        results["valid_login_attempt"]["status"] = "error"133        results["valid_login_attempt"]["error"] = f"An unexpected error occurred: {e}"134​135    return results136​137if __name__ == "__main__":138    # Example Usage (replace with your actual test values and URL)139    # This example assumes a simple JSON API endpoint for login.140    # For HTML forms, you would need to adapt the payload to form data.141​142    # Mocking a server for demonstration purposes143    from flask import Flask, request, jsonify144​145    app = Flask(__name__)146​147    @app.route('/login', methods=['POST'])148    def mock_login():149        data = request.get_json()150        username = data.get('username')151        password = data.get('password')152​153        if username == "testuser" and password == "password123":154            return jsonify({"success": True, "message": "Login successful!", "user_id": "user123"}), 200155        else:156            return jsonify({"success": False, "message": "Invalid username or password."}), 401 # Unauthorized157​158    # Run the mock server in a separate thread or process for testing159    import threading160    server_thread = threading.Thread(target=lambda: app.run(port=5000, debug=False))161    server_thread.daemon = True162    server_thread.start()163​164    import time165    time.sleep(1) # Give the server a moment to start166​167    TEST_LOGIN_URL = "http://localhost:5000/login"168    INVALID_USERNAME = "wronguser"169    INVALID_PASSWORD = "wrongpassword"170    VALID_USERNAME = "testuser"171    VALID_PASSWORD = "password123"172    EXPECTED_INVALID_ERROR = "Invalid username or password."173    EXPECTED_VALID_SUCCESS_MESSAGE = "Login successful!"174​175    print("Running login tests...")176    test_results = test_login_functionality(177        login_url=TEST_LOGIN_URL,178        invalid_username=INVALID_USERNAME,179        invalid_password=INVALID_PASSWORD,180        valid_username=VALID_USERNAME,181        valid_password=VALID_PASSWORD,182        expected_invalid_error=EXPECTED_INVALID_ERROR,183        expected_valid_success_message=EXPECTED_VALID_SUCCESS_MESSAGE,184        headers={"Content-Type": "application/json"} # Explicitly set content type for JSON185    )186​187    import json188    print("\n--- Test Results ---")189    print(json.dumps(test_results, indent=4))190​191    # Example of how to interpret results192    if (test_results["invalid_login_attempt"]["status"] == "passed" and193        test_results["valid_login_attempt"]["status"] == "passed"):194        print("\nLogin functionality test PASSED.")195    else:196        print("\nLogin functionality test FAILED.")

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