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A unit test function that verifies the HashCleaner's ability to remove duplicate text chunks while being case-sensitive, ensuring that strings differing only in case are treated as distinct entries.

Purpose

This test validates that the HashCleaner.clean() method correctly handles case-sensitive deduplication of text chunks. It ensures that 'Case sensitive test.' and 'case sensitive test.' are treated as different strings, with only exact duplicates being removed. This is critical for applications where case distinctions matter in text processing.

Source Code

def test_identical_chunks_with_different_cases(hash_cleaner):
    text_chunks = [
        "Case sensitive test.",
        "case sensitive test.",
        "Another unique test."
    ]
    expected_output = [
        "Case sensitive test.",
        "Another unique test."
    ]
    cleaned_chunks = hash_cleaner.clean(text_chunks)
    assert cleaned_chunks == expected_output

Parameters

Parameter Details

hash_cleaner: A pytest fixture that provides an instance of the HashCleaner class. This fixture is expected to be defined elsewhere in the test suite and should return a properly initialized HashCleaner object ready for testing.

Return Value

This function does not return any value (implicitly returns None). It performs assertions to validate the behavior of the hash_cleaner.clean() method. If the assertion fails, pytest will raise an AssertionError.

Dependencies

• pytest
• src.cleaners.hash_cleaner

Required Imports

import pytest
from src.cleaners.hash_cleaner import HashCleaner

Usage Example

# In conftest.py or the test file:
import pytest
from src.cleaners.hash_cleaner import HashCleaner

@pytest.fixture
def hash_cleaner():
    return HashCleaner()

# Run the test using pytest:
# pytest test_file.py::test_identical_chunks_with_different_cases

# Or run all tests in the file:
# pytest test_file.py

Best Practices

• This test should be run as part of a pytest test suite, not as a standalone function
• The hash_cleaner fixture must be properly defined before running this test
• The test validates case-sensitive behavior - ensure this aligns with the intended use case of HashCleaner
• Consider adding additional test cases for edge cases like empty strings, special characters, or Unicode characters with different cases
• The test assumes that HashCleaner preserves the first occurrence of duplicate items and removes subsequent ones

Tags

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