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A pytest test function that verifies the HashCleaner's ability to remove duplicate text chunks from a list while preserving order and unique entries.

Purpose

This test validates that the HashCleaner.clean() method correctly identifies and removes identical duplicate strings from a list of text chunks, keeping only the first occurrence of each unique string. It ensures the deduplication functionality works as expected by testing with a list containing multiple duplicates and verifying the output matches the expected result with duplicates removed.

Source Code

def test_remove_identical_chunks(hash_cleaner):
    text_chunks = [
        "This is a test.",
        "This is a test.",
        "This is another test.",
        "This is a test."
    ]
    expected_output = [
        "This is a test.",
        "This is another 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 (likely in conftest.py) and provides the object under test for deduplication operations.

Return Value

This function does not return a value (implicitly returns None). It performs an assertion to validate test correctness. If the assertion passes, the test succeeds silently; if it fails, pytest raises an AssertionError with details about the mismatch.

Dependencies

• pytest

Required Imports

import pytest
from src.cleaners.hash_cleaner import HashCleaner

Usage Example

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

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

# Run the test:
# pytest test_file.py::test_remove_identical_chunks
# or simply: 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 assumes HashCleaner.clean() preserves the order of first occurrences
• Consider adding edge cases like empty lists, single-item lists, or lists with no duplicates
• The test uses exact string matching for assertion; ensure the HashCleaner implementation maintains exact string values

Tags

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