Utility Functions #3
Conversation
…357283-merged Robust String Manipulation: Enhanced Utility Functions with Comprehensive Testing
|
""" WalkthroughThe changes introduce two new string reversal functions in separate modules, each implementing manual string reversal with input validation. The Changes
Sequence Diagram(s)sequenceDiagram
participant Tester
participant reverse_string (Module)
Tester->>reverse_string (Module): reverse_string(input_string)
alt input_string is not a string
reverse_string (Module)-->>Tester: raise TypeError("Input must be a string")
else
reverse_string (Module)-->>Tester: return reversed string
end
Poem
""" Note ⚡️ AI Code Reviews for VS Code, Cursor, WindsurfCodeRabbit now has a plugin for VS Code, Cursor and Windsurf. This brings AI code reviews directly in the code editor. Each commit is reviewed immediately, finding bugs before the PR is raised. Seamless context handoff to your AI code agent ensures that you can easily incorporate review feedback. Note ⚡️ Faster reviews with cachingCodeRabbit now supports caching for code and dependencies, helping speed up reviews. This means quicker feedback, reduced wait times, and a smoother review experience overall. Cached data is encrypted and stored securely. This feature will be automatically enabled for all accounts on May 30th. To opt out, configure 📜 Recent review detailsConfiguration used: CodeRabbit UI ⛔ Files ignored due to path filters (2)
📒 Files selected for processing (3)
🚧 Files skipped from review as they are similar to previous changes (3)
✨ Finishing Touches
Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out. 🪧 TipsChatThere are 3 ways to chat with CodeRabbit:
SupportNeed help? Create a ticket on our support page for assistance with any issues or questions. Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments. CodeRabbit Commands (Invoked using PR comments)
Other keywords and placeholders
CodeRabbit Configuration File (
|
![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
There was a problem hiding this comment.
Actionable comments posted: 1
🧹 Nitpick comments (3)
requirements.txt (1)
1-1: Consider pinning to a specific version of pytestWhile adding pytest is good for testing, it's a best practice to specify a version to ensure reproducibility across environments.
-pytest +pytest==7.4.0 # or whichever latest stable version you've tested withtests/test_string_reversal.py (2)
28-37: Consider using pytest's parametrize for invalid input tests.While your current approach for testing invalid inputs is thorough, you could make the tests more maintainable by using pytest's parametrize feature.
-def test_invalid_input_type(): - """Test that a TypeError is raised for non-string inputs.""" - with pytest.raises(TypeError, match="Input must be a string"): - reverse_string(12345) - - with pytest.raises(TypeError, match="Input must be a string"): - reverse_string(None) - - with pytest.raises(TypeError, match="Input must be a string"): - reverse_string(["hello"]) +@pytest.mark.parametrize("invalid_input", [ + 12345, + None, + ["hello"] +]) +def test_invalid_input_type(invalid_input): + """Test that a TypeError is raised for non-string inputs.""" + with pytest.raises(TypeError, match="Input must be a string"): + reverse_string(invalid_input)
1-37: Consider adding tests for additional edge cases.Your test suite is already comprehensive, but you might consider adding tests for:
- Very long strings to verify performance
- Strings with escape characters
- Strings with control characters
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
⛔ Files ignored due to path filters (4)
src/__pycache__/string_reversal.cpython-312.pycis excluded by!**/*.pycsrc/__pycache__/string_utils.cpython-312.pycis excluded by!**/*.pyctests/__pycache__/test_string_reversal.cpython-312-pytest-8.3.5.pycis excluded by!**/*.pyctests/__pycache__/test_string_utils.cpython-312-pytest-8.3.5.pycis excluded by!**/*.pyc
📒 Files selected for processing (5)
requirements.txt(1 hunks)src/string_reversal.py(1 hunks)src/string_utils.py(1 hunks)tests/test_string_reversal.py(1 hunks)tests/test_string_utils.py(1 hunks)
🔇 Additional comments (10)
src/string_utils.py (1)
1-24: Well-implemented string reversal function with good documentationThe implementation is correct and includes proper input validation with a clear error message. The docstring is comprehensive, covering arguments, return values, and exceptions.
For extremely large strings, consider this slight optimization for memory efficiency:
- # Use list to manually reverse the string - reversed_chars = [] - for i in range(len(input_string) - 1, -1, -1): - reversed_chars.append(input_string[i]) - - # Convert list back to string - return ''.join(reversed_chars) + # More memory-efficient for very large strings + return ''.join(input_string[i] for i in range(len(input_string) - 1, -1, -1))tests/test_string_utils.py (1)
1-38: Comprehensive test suite with good coverageThe tests cover a wide range of scenarios including basic functionality, edge cases, and error handling. Well structured with clear test names and descriptions.
Consider adding two more test cases:
- Very long strings to test performance with large inputs
- Strings with various whitespace characters (tabs, newlines)
def test_reverse_string_long(): """Test reversal of a very long string.""" long_string = "a" * 10000 assert reverse_string(long_string) == long_string # Palindrome def test_reverse_string_whitespace(): """Test reversal of strings with various whitespace.""" assert reverse_string("hello\tworld\n") == "\ndlrow\tolleh"src/string_reversal.py (1)
1-30: Well-implemented in-place string reversal with thorough documentationThe implementation using character swapping is efficient and includes proper input validation. The docstring clearly explains the function's purpose, parameters, return value, and exceptions.
tests/test_string_reversal.py (7)
1-3: Good setup and imports.The imports are clear and concise, properly setting up pytest and importing the function under test.
4-7: LGTM! Good basic test case.The test for standard string reversal provides a clear baseline case and verifies core functionality.
8-11: Good edge case testing for empty strings.Testing empty string handling is important for string manipulation functions. This ensures the function behaves correctly for this edge case.
12-15: Great palindrome test case.Testing with palindromes is a smart way to verify the function's correctness since the input and output should be identical.
16-19: Good test for strings with spaces.This verifies that whitespace characters are handled correctly during reversal.
20-23: Thorough testing with special characters.This test ensures the function correctly handles non-alphanumeric characters during reversal.
24-27: Excellent Unicode character testing.Testing with non-ASCII characters is critical for robust string functions. This ensures the function works correctly with multi-byte Unicode characters.
src/string_reversal.py
Outdated
| def reverse_string(input_string): | ||
| """ |
There was a problem hiding this comment.
💡 Verification agent
🧩 Analysis chain
Note about duplicate functionality
This function provides the same functionality as reverse_string in string_utils.py but with a different implementation. Consider:
- Merging into a single utility module, or
- Renaming one function to clarify the implementation difference (e.g.,
reverse_string_swapvsreverse_string_iterate)
🏁 Script executed:
#!/bin/bash
# Check for other files that import these reverse_string functions
echo "Files importing string_utils.reverse_string:"
rg -l "from src.string_utils import reverse_string" --type py || echo "No imports found"
echo "Files importing string_reversal.reverse_string:"
rg -l "from src.string_reversal import reverse_string" --type py || echo "No imports found"Length of output: 391
Consolidate duplicate reverse_string implementations
You currently have two equivalent functions:
src/string_utils.py→reverse_string(imported bytests/test_string_utils.py)src/string_reversal.py→reverse_string(imported bytests/test_string_reversal.py)
Both provide identical behavior. To reduce duplication and simplify maintenance, choose one of the following:
• Merge into a single implementation (e.g. keep it in src/string_utils.py) and update both test files to import from that module.
• Rename one of the functions to clarify its approach (for example, reverse_string_swap vs. reverse_string_iterative) and update its test accordingly.
Please update the implementation and adjust imports in:
src/string_utils.pysrc/string_reversal.pytests/test_string_utils.pytests/test_string_reversal.py
…22ed0737-merged Enhance String Reversal Utility with Robust Implementation and Comprehensive Testing
…b3bb2e5f-merged Enhance String Manipulation Utilities with Robust Reversal Implementation and Comprehensive Testing
…4e65-merged Unified String Reversal: Enhanced Type Safety and Cross-Module Consistency
…0936-merged Enhance String Manipulation: Robust Reversal Utility with Comprehensive Testing
3 participants
Bounty Specification
Implement a collection of utility functions for various common programming tasks
Completed Issues
Build a Number Theory Library
Create a comprehensive number theory library by implementing functions that build upon each other
PR: View Changes
Summary by CodeRabbit