⚡️ Speed up function is_valid_cidr by 28%

[codeflash-ai]

📄 28% (0.28x) speedup for is_valid_cidr in src/requests/utils.py

⏱️ Runtime : 5.31 milliseconds → 4.16 milliseconds (best of 19 runs)

📝 Explanation and details

To optimize the provided Python program for runtime efficiency, several improvements can be made.

1. Avoid repeated operations by storing results in variables.
2. Reduce the number of function calls for splitting the string.
3. Stop additional computations as soon as a validation fails.

Here’s the optimized version of the program.

Explanation of Optimizations.

1. String Split Once: Instead of calling split multiple times, split the input string once and store the result in the parts variable. This avoids redundant operations.
2. Immediate Return on Error: If the length of parts is not 2, return False immediately.
3. Combined Conditions: Checks performed using fewer conditionals help reduce complexity and improve clarity.
4. Direct Try-Except for Mask Conversion: Single attempt to convert the mask and handle any exceptions immediately.

These changes reduce the overall time complexity by minimizing repeated calculations, thus leading to a faster execution.

✅ Correctness verification report:

Test	Status
⚙️ Existing Unit Tests	✅ 61 Passed
🌀 Generated Regression Tests	✅ 2079 Passed
⏪ Replay Tests	🔘 None Found
🔎 Concolic Coverage Tests	🔘 None Found
📊 Tests Coverage	100.0%

⚙️ Existing Unit Tests Details

- test_utils.py

🌀 Generated Regression Tests Details

import socket

# imports
import pytest  # used for our unit tests
from src.requests.utils import is_valid_cidr

# unit tests

# Basic Test Cases
def test_valid_cidr_notations():
    # Standard valid CIDR notations
    codeflash_output = is_valid_cidr("192.168.0.1/24")
    codeflash_output = is_valid_cidr("10.0.0.0/8")
    codeflash_output = is_valid_cidr("172.16.0.0/12")

def test_invalid_ip_address():
    # Invalid IP addresses
    codeflash_output = is_valid_cidr("999.999.999.999/24")
    codeflash_output = is_valid_cidr("256.256.256.256/16")
    codeflash_output = is_valid_cidr("abc.def.ghi.jkl/24")

def test_invalid_mask():
    # Invalid masks
    codeflash_output = is_valid_cidr("192.168.0.1/33")
    codeflash_output = is_valid_cidr("10.0.0.1/0")
    codeflash_output = is_valid_cidr("172.16.0.1/-1")

def test_non_integer_mask():
    # Non-integer masks
    codeflash_output = is_valid_cidr("192.168.0.1/abc")
    codeflash_output = is_valid_cidr("10.0.0.1/24.5")

def test_missing_mask():
    # Missing masks
    codeflash_output = is_valid_cidr("192.168.0.1/")
    codeflash_output = is_valid_cidr("10.0.0.1")

def test_extra_slash():
    # Extra slashes
    codeflash_output = is_valid_cidr("192.168.0.1/24/1")
    codeflash_output = is_valid_cidr("10.0.0.1/8/")

# Edge Test Cases
def test_empty_string():
    # Empty string
    codeflash_output = is_valid_cidr("")

def test_only_slash():
    # Only slash
    codeflash_output = is_valid_cidr("/")

def test_only_ip_address():
    # Only IP address
    codeflash_output = is_valid_cidr("192.168.0.1")
    codeflash_output = is_valid_cidr("10.0.0.1")

def test_only_mask():
    # Only mask
    codeflash_output = is_valid_cidr("/24")

def test_whitespace_handling():
    # Whitespace handling
    codeflash_output = is_valid_cidr(" 192.168.0.1/24 ")
    codeflash_output = is_valid_cidr("\t10.0.0.1/8\n")

# Boundary Values for Mask
def test_boundary_values_for_mask():
    # Lowest valid mask
    codeflash_output = is_valid_cidr("192.168.0.1/1")
    codeflash_output = is_valid_cidr("10.0.0.1/1")

    # Highest valid mask
    codeflash_output = is_valid_cidr("192.168.0.1/32")
    codeflash_output = is_valid_cidr("10.0.0.1/32")

# Large Scale Test Cases
def test_large_number_of_valid_cidr_notations():
    # Large number of valid CIDR notations
    valid_cidr_list = ["192.168.0.1/24"] * 1000
    for cidr in valid_cidr_list:
        codeflash_output = is_valid_cidr(cidr)

def test_large_number_of_invalid_cidr_notations():
    # Large number of invalid CIDR notations
    invalid_cidr_list = ["999.999.999.999/24"] * 1000
    for cidr in invalid_cidr_list:
        codeflash_output = is_valid_cidr(cidr)

# Mixed Valid and Invalid CIDR Notations
def test_mixed_valid_and_invalid_cidr_notations():
    # Mixed list
    mixed_cidr_list = ["192.168.0.1/24", "256.256.256.256/16", "172.16.0.0/12", "192.168.0.1/33"]
    expected_results = [True, False, True, False]
    for cidr, expected in zip(mixed_cidr_list, expected_results):
        codeflash_output = is_valid_cidr(cidr)

# Special Characters and Formats
def test_special_characters_in_ip():
    # Special characters in IP
    codeflash_output = is_valid_cidr("192.168.0.1*/24")
    codeflash_output = is_valid_cidr("10.0.0.1@/8")

def test_ip_address_with_leading_zeros():
    # IP address with leading zeros
    codeflash_output = is_valid_cidr("192.168.001.001/24")
    codeflash_output = is_valid_cidr("010.000.000.001/8")

# Run the tests
pytest.main()
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.

import socket

# imports
import pytest  # used for our unit tests
from src.requests.utils import is_valid_cidr

# unit tests

def test_valid_cidr_notations():
    # Basic valid CIDR notations
    codeflash_output = is_valid_cidr("192.168.1.1/24")
    codeflash_output = is_valid_cidr("10.0.0.0/8")
    codeflash_output = is_valid_cidr("172.16.0.0/16")
    codeflash_output = is_valid_cidr("0.0.0.0/1")
    codeflash_output = is_valid_cidr("255.255.255.255/32")

def test_invalid_cidr_notations_invalid_ip():
    # Invalid IP addresses
    codeflash_output = is_valid_cidr("999.999.999.999/24")
    codeflash_output = is_valid_cidr("256.256.256.256/16")
    codeflash_output = is_valid_cidr("abc.def.ghi.jkl/8")
    codeflash_output = is_valid_cidr("192.168.1/24")
    codeflash_output = is_valid_cidr("192.168.1.1.1/24")

def test_invalid_cidr_notations_invalid_mask():
    # Invalid masks
    codeflash_output = is_valid_cidr("192.168.1.1/33")
    codeflash_output = is_valid_cidr("10.0.0.0/0")
    codeflash_output = is_valid_cidr("172.16.0.0/-1")
    codeflash_output = is_valid_cidr("192.168.1.1/abc")
    codeflash_output = is_valid_cidr("192.168.1.1/")

def test_incorrect_format():
    # Incorrect CIDR formats
    codeflash_output = is_valid_cidr("192.168.1.1")
    codeflash_output = is_valid_cidr("192.168.1.1/24/32")
    codeflash_output = is_valid_cidr("/24")
    codeflash_output = is_valid_cidr("192.168.1.1/24/")

def test_edge_cases():
    # Edge cases
    codeflash_output = is_valid_cidr("")
    codeflash_output = is_valid_cidr(" ")
    codeflash_output = is_valid_cidr("192.168.1.1/24 ")
    codeflash_output = is_valid_cidr(" 192.168.1.1/24")
    codeflash_output = is_valid_cidr("192.168.1.1 /24")

def test_large_scale_cases():
    # Large scale cases
    codeflash_output = is_valid_cidr(".".join(["1"]*1000) + "/24")
    codeflash_output = is_valid_cidr("192.168.1.1/" + "1"*1000)


def test_unusual_characters_in_ip_or_mask():
    # Unusual characters in IP or mask
    codeflash_output = is_valid_cidr("192.168.1.1/24#")
    codeflash_output = is_valid_cidr("192.168.1.1#/24")
    codeflash_output = is_valid_cidr("192.168.1.1/24\n")
    codeflash_output = is_valid_cidr("192.168.1.1\t/24")

def test_ip_address_with_leading_zeros():
    # IP addresses with leading zeros
    codeflash_output = is_valid_cidr("192.168.001.001/24")
    codeflash_output = is_valid_cidr("010.000.000.001/8")
    codeflash_output = is_valid_cidr("001.002.003.004/16")

def test_ip_address_with_mixed_leading_zeros_and_normal_digits():
    # IP addresses with mixed leading zeros and normal digits
    codeflash_output = is_valid_cidr("192.168.1.001/24")
    codeflash_output = is_valid_cidr("010.0.0.1/8")
    codeflash_output = is_valid_cidr("001.002.3.004/16")

def test_ip_address_with_extra_dots():
    # IP addresses with extra dots
    codeflash_output = is_valid_cidr("192.168..1.1/24")
    codeflash_output = is_valid_cidr("10.0.0..0/8")
    codeflash_output = is_valid_cidr("172.16.0.0./16")

def test_ip_address_with_non_decimal_numbers():
    # IP addresses with non-decimal numbers
    codeflash_output = is_valid_cidr("0xC0.0xA8.0x01.0x01/24")
    codeflash_output = is_valid_cidr("0300.0250.01.01/24")
    codeflash_output = is_valid_cidr("192.168.1.1/0x18")
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.

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