Add pytest configuration

[yurekami]

Description

Add pytest configuration file for standardized test running.

Configuration

Test Discovery

• Path: tests/
• Pattern: test_*.py files, test_* functions

Output Options

• Verbose mode (-v)
• Short tracebacks (--tb=short)
• Summary of non-passing tests (-ra)
• Strict markers (undefined markers cause errors)

Custom Markers

Marker	Description
slow	Long-running tests
gpu	Tests requiring GPU
sm90	Tests for Hopper architecture
sm100	Tests for Blackwell architecture
fp8	FP8 GEMM tests
bf16	BF16 GEMM tests
attention	Attention kernel tests
einsum	Einsum tests

Usage Examples

pytest                      # Run all tests
pytest -m "not slow"        # Skip slow tests
pytest -m fp8               # Run only FP8 tests
pytest -m "gpu and sm90"    # Run SM90 GPU tests
pytest tests/test_bf16.py   # Run specific test file

Benefits

• Consistent test configuration across environments
• Custom markers for selective test runs
• Better output formatting for debugging

Testing

• Valid pytest.ini syntax
• Verify pytest discovers tests correctly

🤖 Generated with Claude Code