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Testing Document Loader Implementation in ColossalAI

This test suite validates the DocumentLoader functionality in ColossalAI’s QA application, focusing on document loading and metadata handling. It ensures proper loading of multiple documents and verification of their content structure.

Test Coverage Overview

The test suite covers the core document loading capabilities of ColossalAI’s DocumentLoader class.

Key areas tested include:

Document content loading from specified file paths
Metadata extraction and validation
Multiple file handling and deduplication
String content type verification

Implementation Analysis

The testing approach utilizes environment variables for test data paths, implementing a straightforward unit test structure. The implementation follows a clear pattern of initializing the DocumentLoader, processing documents, and validating both content and metadata attributes through assertions.

Technical implementation details:

Environment-based test data configuration
Document instance validation
Metadata source tracking
Duplicate file detection

Technical Details

Testing components and configuration:

Python’s built-in assertion framework
Environment variable TEST_DOCUMENT_LOADER_DATA_PATH for test data
DocumentLoader class from colossalqa.data_loader
File path and content type validation

Best Practices Demonstrated

The test implementation showcases several testing best practices for document processing validation.

Notable practices include:

Environment-based configuration for test data
Explicit type checking for content validation
Comprehensive metadata verification
Clear test case isolation and focus

hpcaitech/colossalai

applications/ColossalQA/tests/test_document_loader.py

            
import os

from colossalqa.data_loader.document_loader import DocumentLoader


def test_add_document():
    PATH = os.environ.get("TEST_DOCUMENT_LOADER_DATA_PATH")
    files = [[PATH, "all data"]]
    document_loader = DocumentLoader(files)
    documents = document_loader.all_data
    all_files = []
    for doc in documents:
        assert isinstance(doc.page_content, str) == True
        if doc.metadata["source"] not in all_files:
            all_files.append(doc.metadata["source"])
    print(all_files)
    assert len(all_files) == 6


if __name__ == "__main__":
    test_add_document()