⚡️ Speed up function generate_candidates by 137% in PR #64 (windows-fixes)

[codeflash-ai]

⚡️ This pull request contains optimizations for PR #64

If you approve this dependent PR, these changes will be merged into the original PR branch windows-fixes.

This PR will be automatically closed if the original PR is merged.

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📄 137% (1.37x) speedup for generate_candidates in codeflash/code_utils/coverage_utils.py

⏱️ Runtime : 821 microseconds → 346 microseconds (best of 416 runs)

📝 Explanation and details

Here is an optimized version of the program.

Changes made.

1. Cached current_path.root in variable root to avoid calling current_path.parent multiple times.
2. Reduced the computation of candidate_path by using f-strings for faster string concatenation.

These changes help in reducing the overhead and making the loop slightly faster.

✅ Correctness verification report:

Test	Status
⚙️ Existing Unit Tests	✅ 40 Passed
🌀 Generated Regression Tests	✅ 28 Passed
⏪ Replay Tests	🔘 None Found
🔎 Concolic Coverage Tests	🔘 None Found
📊 Tests Coverage

⚙️ Existing Unit Tests Details

- test_code_utils.py

🌀 Generated Regression Tests Details

from __future__ import annotations

from pathlib import Path

# imports
import pytest  # used for our unit tests
from codeflash.code_utils.coverage_utils import generate_candidates

# unit tests

# Basic Functionality
def test_single_level_directory():
    codeflash_output = generate_candidates(Path('/file.txt'))

def test_multi_level_directory():
    codeflash_output = generate_candidates(Path('/home/user/project/file.txt'))

# Edge Cases
def test_root_directory():
    codeflash_output = generate_candidates(Path('/'))

def test_empty_path():
    codeflash_output = generate_candidates(Path(''))

def test_single_directory_without_file():
    codeflash_output = generate_candidates(Path('/home/'))

# Relative Paths
def test_relative_path_single_directory():
    codeflash_output = generate_candidates(Path('home/file.txt'))

def test_relative_path_multiple_directories():
    codeflash_output = generate_candidates(Path('home/user/project/file.txt'))

# Special Characters in Path
def test_path_with_spaces():
    codeflash_output = generate_candidates(Path('/home/user/my project/file.txt'))

def test_path_with_special_characters():
    codeflash_output = generate_candidates(Path('/home/user/project@123/file.txt'))

# Windows-style Paths (if cross-platform compatibility is intended)
def test_windows_absolute_path():
    codeflash_output = generate_candidates(Path('C:\\Users\\user\\project\\file.txt'))

def test_windows_relative_path():
    codeflash_output = generate_candidates(Path('Users\\user\\project\\file.txt'))

# Large Scale Test Cases
def test_deep_directory_structure():
    deep_path = Path('/a/b/c/d/e/f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt')
    expected_output = [
        'file.txt', 'z/file.txt', 'y/z/file.txt', 'x/y/z/file.txt', 'w/x/y/z/file.txt',
        'v/w/x/y/z/file.txt', 'u/v/w/x/y/z/file.txt', 't/u/v/w/x/y/z/file.txt',
        's/t/u/v/w/x/y/z/file.txt', 'r/s/t/u/v/w/x/y/z/file.txt', 'q/r/s/t/u/v/w/x/y/z/file.txt',
        'p/q/r/s/t/u/v/w/x/y/z/file.txt', 'o/p/q/r/s/t/u/v/w/x/y/z/file.txt',
        'n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt', 'm/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt',
        'l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt', 'k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt',
        'j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt', 'i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt',
        'h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt', 'g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt',
        'f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt', 'e/f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt',
        'd/e/f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt', 'c/d/e/f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt',
        'b/c/d/e/f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt', 'a/b/c/d/e/f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y/z/file.txt'
    ]
    codeflash_output = generate_candidates(deep_path)

# Non-standard Filesystem Elements
def test_hidden_files_and_directories():
    codeflash_output = generate_candidates(Path('/home/user/.hidden/file.txt'))

# Invalid Inputs



from __future__ import annotations

from pathlib import Path

# imports
import pytest  # used for our unit tests
from codeflash.code_utils.coverage_utils import generate_candidates


# unit tests
def test_basic_single_file_path():
    # Test with a single file path
    codeflash_output = generate_candidates(Path("/home/user/project/file.py"))

def test_basic_single_directory_path():
    # Test with a single directory path
    codeflash_output = generate_candidates(Path("/home/user/project/"))

def test_edge_root_directory():
    # Test with the root directory
    codeflash_output = generate_candidates(Path("/"))

def test_edge_empty_path():
    # Test with an empty path
    codeflash_output = generate_candidates(Path(""))

def test_edge_current_directory():
    # Test with the current directory
    codeflash_output = generate_candidates(Path("."))

def test_relative_path_to_file():
    # Test with a relative path to a file
    codeflash_output = generate_candidates(Path("folder/subfolder/file.py"))

def test_relative_path_to_directory():
    # Test with a relative path to a directory
    codeflash_output = generate_candidates(Path("folder/subfolder/"))

def test_special_characters_path_with_spaces():
    # Test with a path containing spaces
    codeflash_output = generate_candidates(Path("/home/user/my project/file.py"))

def test_special_characters_path_with_unicode():
    # Test with a path containing Unicode characters
    codeflash_output = generate_candidates(Path("/home/user/项目/file.py"))

def test_windows_style_path():
    # Test with a Windows-style path
    codeflash_output = generate_candidates(Path("C:\\Users\\user\\project\\file.py"))

def test_large_scale_deeply_nested_path():
    # Test with a deeply nested path
    codeflash_output = generate_candidates(Path("/a/b/c/d/e/f/g/h/i/j/file.py"))

def test_invalid_non_existent_path():
    # Test with a non-existent path
    codeflash_output = generate_candidates(Path("/non/existent/path/file.py"))

def test_case_sensitivity():
    # Test with a path containing mixed case
    codeflash_output = generate_candidates(Path("/Home/User/Project/File.py"))

def test_trailing_slash_in_directory_path():
    # Test with a directory path that has a trailing slash
    codeflash_output = generate_candidates(Path("/home/user/project/"))

def test_dot_notation_path():
    # Test with a path that includes dot notation
    codeflash_output = generate_candidates(Path("/home/user/./project/file.py"))
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.

To edit these changes git checkout codeflash/optimize-pr64-2025-03-31T04.49.51 and push.