Fix issue 369 in AiDotNet #459
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Implements 128 test methods across 4 compressor classes to achieve 80%+ code coverage for the RAG context compression module. Test Coverage: - LLMContextCompressor: 35 tests covering constructor validation, basic functionality, compression quality, edge cases, and integration scenarios - DocumentSummarizer: 33 tests for summarization logic, query-aware compression, and boundary conditions - SelectiveContextCompressor: 32 tests for sentence selection, relevance filtering, and threshold behavior - AutoCompressor: 28 tests for rule-based compression, scoring algorithms, and performance Base Test Infrastructure: - ContextCompressorTestBase: Shared utilities including sample document creation, compression verification, metadata/score preservation checks, and helper methods for Unicode, special characters, and large documents Test Categories: - Constructor validation (parameter bounds, null checks) - Basic functionality (valid inputs, null/empty handling) - Compression quality (output length, relevance preservation, metadata/score handling) - Edge cases (empty documents, single sentences, 100KB+ documents, Unicode, special characters) - Integration scenarios (multiple compressors, different parameters, consistency) Resolves #369
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Pull Request Overview
This PR introduces comprehensive unit test coverage for context compression functionality in the retrieval-augmented generation (RAG) system. The tests cover four compressor implementations with extensive validation of compression behavior, edge cases, and data preservation.
Key Changes:
- Added a base test class providing shared utilities and helper methods for compression testing
- Implemented comprehensive test suites for SelectiveContextCompressor, LLMContextCompressor, DocumentSummarizer, and AutoCompressor
- Covered constructor validation, compression quality, edge cases, and integration scenarios
Reviewed Changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
| ContextCompressorTestBase.cs | Base class providing shared test utilities, helper methods for document creation, and assertion helpers for all compressor tests |
| SelectiveContextCompressorTests.cs | Tests for SelectiveContextCompressor covering sentence selection, relevance filtering, and threshold-based compression |
| LLMContextCompressorTests.cs | Tests for LLMContextCompressor validating compression ratios, text compression, and query-based relevance |
| DocumentSummarizerTests.cs | Tests for DocumentSummarizer ensuring proper summarization, length limits, and query-term prioritization |
| AutoCompressorTests.cs | Tests for AutoCompressor covering automatic compression with configurable limits, sentence scoring, and performance validation |
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Implements 128 test methods across 4 compressor classes to achieve 80%+ code coverage for the RAG context compression module.
Test Coverage:
Base Test Infrastructure:
Test Categories:
Resolves #369
User Story / Context
merge-dev2-to-masterSummary
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