Utility Functions #1
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…2882e8-merged Enhance String Manipulation Utilities with Robust Reversal Functionality
…a289ef-merged Enhance String Utilities with Robust Conversion and Reversal Functions
WalkthroughTwo new files were added: a utility module with functions for string reversal and RGB-to-hex conversion, and a corresponding test suite. The utility functions include input validation with specific error handling. The tests comprehensively verify correct behavior, type checking, and value range enforcement for both functions. Changes
Sequence Diagram(s)sequenceDiagram
participant Tester
participant string_utils.py
Tester->>string_utils.py: reverse_string(input_string)
alt input is not string
string_utils.py-->>Tester: raise TypeError
else
string_utils.py-->>Tester: reversed string
end
Tester->>string_utils.py: rgb_to_hex(r, g, b)
alt any input not int
string_utils.py-->>Tester: raise TypeError
else any input out of range
string_utils.py-->>Tester: raise ValueError
else
string_utils.py-->>Tester: hex string
end
Poem
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Actionable comments posted: 0
🧹 Nitpick comments (4)
src/string_utils.py (1)
1-23: Good implementation, but consider performance for long stringsThe
reverse_stringfunction correctly validates input and performs manual string reversal. However, the current implementation has O(n²) time complexity because string concatenation (char + reversed_str) creates a new string on each iteration.For better performance with long strings, consider using one of these alternatives:
- # Manual string reversal - reversed_str = "" - for char in input_string: - reversed_str = char + reversed_str - - return reversed_str + # Option 1: Use Python's built-in slice notation (most Pythonic) + return input_string[::-1]Or:
- # Manual string reversal - reversed_str = "" - for char in input_string: - reversed_str = char + reversed_str - - return reversed_str + # Option 2: Use list for O(n) performance, then join + char_list = list(input_string) + char_list.reverse() + return ''.join(char_list)tests/test_string_utils.py (3)
4-10: Good basic tests for reverse_string, consider adding edge casesThe current tests cover basic functionality and simple edge cases.
Consider expanding test coverage with:
def test_reverse_string_special_cases(): # Test with special characters assert reverse_string("hello!@#$") == "$#@!olleh" # Test with Unicode characters assert reverse_string("héllö wörld") == "dlröw ölléh" # Test with whitespace assert reverse_string(" spaced ") == " decaps "
24-34: Good type error validation testsTests cover the expected TypeError cases for string and float inputs.
Consider also testing with a valid integer-like type that should pass:
def test_rgb_to_hex_accepts_integer_like(): """Test that integer-like values are accepted""" # numpy.int32, numpy.int64 would also be good to test if numpy is used assert rgb_to_hex(int(255), int(128), int(64)) == '#FF8040'
35-42: Comprehensive value error validationTests verify that out-of-range values correctly raise ValueErrors.
Consider adding tests for boundary values to ensure the range limits work as expected:
def test_rgb_to_hex_boundary_values(): """Test boundary values (0 and 255) are accepted""" assert rgb_to_hex(0, 0, 0) == '#000000' assert rgb_to_hex(255, 255, 255) == '#FFFFFF' assert rgb_to_hex(0, 255, 0) == '#00FF00'
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⛔ Files ignored due to path filters (2)
src/__pycache__/string_utils.cpython-312.pycis excluded by!**/*.pyctests/__pycache__/test_string_utils.cpython-312-pytest-8.3.5.pycis excluded by!**/*.pyc
📒 Files selected for processing (2)
src/string_utils.py(1 hunks)tests/test_string_utils.py(1 hunks)
🧰 Additional context used
🧬 Code Graph Analysis (1)
tests/test_string_utils.py (1)
src/string_utils.py (2)
rgb_to_hex(25-52)reverse_string(1-23)
🔇 Additional comments (3)
src/string_utils.py (1)
25-52: Well-implemented RGB to hex converter with thorough validationThe function includes proper input validation for both types and value ranges, with appropriate error messages. The use of
all()with generator expressions is elegant and efficient. The string formatting with{:02X}correctly ensures two-digit uppercase hexadecimal representation.tests/test_string_utils.py (2)
11-18: LGTM! Comprehensive test of basic RGB to hex conversionsThe test effectively verifies conversion of primary colors, black, and white.
19-23: LGTM! Good tests for mixed color valuesTests for gray and custom color mixes validate the conversion logic works correctly for non-primary colors.
2 participants
Bounty Specification
Implement a collection of utility functions for various common programming tasks
Completed Issues
Implement Independent Utility Functions
Create a collection of independent utility functions for various common programming tasks
PR: View Changes
Implement More Utility Functions
Implement a collection of utility functions for various common programming tasks
PR: View Changes
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