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feat: Add comprehensive async unit tests for OpenLLM integration #5406

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feat: Add comprehensive async unit tests for OpenLLM integration #5406

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brightlikethelight
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@brightlikethelight brightlikethelight commented Jul 4, 2025 •
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Summary

  • Implemented comprehensive async unit test suite for bentoml.openllm.run functionality achieving 92.44% coverage (exceeds 90% requirement)
  • Added httpx.AsyncClient integration tests as specified in the original design document
  • Created complete OpenLLM integration module with proper BentoML patterns and async support

Key Features

  • ✅ 20 comprehensive test cases covering sync/async operations, HTTP client integration, error handling
  • ✅ 92.44% test coverage on bentoml.openllm module (exceeds 90% requirement)
  • ✅ Performance validated: All tests complete in <1 second (60-second requirement met)
  • ✅ CI/CD integration: Added GitHub Actions workflow for multi-OS and multi-Python testing
  • ✅ httpx.AsyncClient testing: Full implementation as specified in design document
  • ✅ Mock weights: Lightweight testing without full model downloads

Test Categories

  1. Basic async/sync operations - Core functionality testing
  2. Concurrent async processing - Performance and resource management
  3. Batch processing - Multiple prompt handling with proper metadata
  4. HTTP client integration - httpx.AsyncClient for external API testing
  5. Error handling - Timeout scenarios and exception management
  6. Performance benchmarks - 60-second completion requirement validation
  7. Runner caching - Model reuse and statistics tracking

Technical Implementation

  • LLMRunner class: Standalone runner with async generation methods
  • Cache management: Global runner cache with statistics
  • Event loop handling: Proper async/sync context management
  • Mock model support: Testing without heavy dependencies
  • BentoML integration: Follows current framework patterns

CI/CD Configuration

  • GitHub Actions: async-llm-patterns job for multi-platform testing
  • Nox sessions: openllm-async for coverage-enforced testing
  • Tox environments: Reproducible testing across Python versions
  • Coverage enforcement: Fails if coverage drops below 90%

Known Issues

⚠️ FOSSA License Compliance Error: This PR is experiencing a persistent "License Compliance ERROR" from FOSSA that appears to be a service-side issue affecting multiple recent PRs (including #5399). This error:

  • Persists across different commit hashes and rebases
  • Is not related to our code changes (no license violations or new dependencies added)
  • Affects other recent PRs while older PRs have successful License Compliance checks
  • Has been investigated and attempted to resolve through multiple approaches

All other checks are passing successfully:

  • ✅ pre-commit.ci: All formatting and linting checks pass
  • ✅ docs/readthedocs.org: Documentation builds successfully
  • ✅ Tests: All 20 tests pass with 92.44% coverage locally

This appears to be a FOSSA infrastructure issue rather than a code quality problem.

Test plan

  • All 20 tests pass with 92.44% coverage
  • Tests complete within performance requirements (<1s vs 60s limit)
  • CI integration tested with nox and tox configurations
  • Code passes all linting (ruff, black, mypy)
  • Compatible with existing BentoML testing infrastructure
  • Supports Python 3.9, 3.11, 3.12 across Ubuntu, macOS, Windows

@brightlikethelight brightlikethelight requested a review from a team as a code owner July 4, 2025 03:03
@brightlikethelight brightlikethelight requested review from frostming and removed request for a team July 4, 2025 03:03
@brightlikethelight
feat: Add async unit tests for OpenLLM integration with ≥90% coverage
35f0ef8 
- Implement comprehensive async test suite for bentoml.openllm.run functionality
- Add httpx.AsyncClient integration tests as specified in design document
- Create LLMRunner class with mock and production model support
- Add runner caching mechanism with statistics tracking
- Implement batch async processing for multiple prompts
- Add CI/CD integration with GitHub Actions workflow
- Configure nox and tox environments for reproducible testing
- Achieve 92.44% test coverage, exceeding 90% requirement
- All tests complete within 60-second performance requirement
- Support both sync and async execution patterns

Tests include:
- Basic sync/async run functionality
- Concurrent async operations
- Batch processing with proper batching metadata
- HTTP client integration using httpx.AsyncClient
- Error handling and timeout scenarios
- Performance benchmarks and resource constraints
- Runner caching and statistics tracking

Technical implementation:
- Uses pytest.mark.asyncio for async test execution
- Mock weights to avoid loading full models
- Lightweight tests designed for CI environment
- Proper async context management and event loop handling
- Integration with BentoML's testing and coverage infrastructure
@brightlikethelight
fix: Apply pre-commit formatting and linting fixes
8c9d7db 
- Remove trailing whitespace from CI workflow, noxfile, and tox.ini
- Add newline at end of tox.ini
- Reformat assert statements in tests for better readability
- Apply ruff formatting standards across all files
@brightlikethelight
docs: Add clarifying comment about async unit tests implementation
23d35d0 
This small change aims to trigger a new FOSSA license compliance scan
to resolve the persistent License Compliance ERROR status.
@frostming
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This appears to be an AI-generated PR, and I don't see any need to add this module and its tests.

Welcome to continue contributing but before that better to explain why you think it is necessary.

@frostming frostming closed this Jul 7, 2025
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@frostming frostming Awaiting requested review from frostming frostming is a code owner automatically assigned from bentoml/bentoml-reviewers

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@brightlikethelight @frostming