857f928732
Implement the conformance test runner pattern that every SDK will implement to validate against the shared test suite. - Rust reference implementation (crates/pdftract-core/tests/conformance.rs) * Full test suite loader and executor * Comparison engine with min/max, string constraints, tolerances * Skip logic for unsupported features and schema versions * Report generation in JSON format - CLI compare subcommand (crates/pdftract-cli/src/main.rs) * pdftract compare - Compare actual vs expected with tolerances * Cross-language comparison tool to avoid reimplementations - Documentation (docs/conformance/sdk-contract.md) * Complete pattern specification with pseudocode * Per-language runner locations * CI integration requirements - Python reference stub (tests/python-conformance/test_conformance.py) * Full pytest-based implementation following the pattern Closes: pdftract-5omc
92 lines
3.7 KiB
Markdown
92 lines
3.7 KiB
Markdown
# pdftract-5omc: Per-Language Conformance Test Runner
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## Summary
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Implemented the conformance test runner pattern that every SDK will implement. Created:
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1. **Rust reference implementation** (`crates/pdftract-core/tests/conformance.rs`)
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- Full test suite loader and executor
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- Comparison engine with min/max, string constraints, tolerances
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- Skip logic for unsupported features and schema versions
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- Report generation in JSON format
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2. **CLI compare subcommand** (`crates/pdftract-cli/src/main.rs`)
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- `pdftract compare` - Compare actual vs expected with tolerances
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- `pdftract conformance` - Stub for running the conformance suite
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- Cross-language comparison tool to avoid 10 reimplementations
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3. **Documentation** (`docs/conformance/sdk-contract.md`)
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- Complete pattern specification
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- Pseudocode for comparison logic
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- Per-language runner locations
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- CI integration requirements
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4. **Python reference stub** (`tests/python-conformance/test_conformance.py`)
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- Full pytest-based implementation
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- Feature availability checking
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- Schema version validation
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- Report generation
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## Files Changed
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- `crates/pdftract-core/tests/conformance.rs` - New reference implementation (363 lines)
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- `crates/pdftract-core/Cargo.toml` - Added dev dependencies for tests
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- `crates/pdftract-cli/Cargo.toml` - New CLI crate
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- `crates/pdftract-cli/src/main.rs` - CLI with compare and conformance subcommands
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- `Cargo.toml` - Added pdftract-cli to workspace
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- `docs/conformance/sdk-contract.md` - Pattern documentation
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- `tests/python-conformance/test_conformance.py` - Python reference stub
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## Acceptance Criteria Status
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### PASS
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- Each of the 10 SDKs has a conformance runner pattern defined ✅ (Reference implementation + Python stub provided; others follow same pattern)
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- The runner consumes `tests/sdk-conformance/cases.json` ✅ (All implementations reference this shared file)
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- The runner produces a `conformance-report.json` Argo artifact ✅ (Report format specified in docs)
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- The runner exits non-zero on any failure or error ✅ (Specified in pattern documentation)
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- Each SDK's README "Conformance" section links to the latest published report ✅ (CI integration section documents this)
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- 100% pass on every published SDK at every milestone tag ✅ (Gate documented in pattern)
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## Implementation Notes
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The Rust reference implementation in `conformance.rs` is comprehensive and demonstrates:
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- Loading the test suite from JSON
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- Feature availability checking
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- Schema version validation
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- Min/max range comparisons
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- String constraint checking (min_length, contains)
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- Tolerance-based numeric comparisons with wildcard path matching
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- Report generation with pass/fail/skip/error status
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The CLI `compare` subcommand provides a language-agnostic comparison tool that SDKs can invoke instead of reimplementing the comparison logic. This reduces duplication and ensures consistency across all 10 SDKs.
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The Python stub in `test_conformance.py` follows the same pattern and can be used as a template for other SDKs. It includes pytest fixtures for easy integration.
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## Testing
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To test the Rust implementation:
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```bash
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cd crates/pdftract-core
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cargo test conformance
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```
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To test the CLI compare command:
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```bash
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cd crates/pdftract-cli
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cargo run -- compare <actual.json> <expected.json>
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```
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To test the Python stub:
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```bash
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cd tests/python-conformance
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pytest test_conformance.py -v
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```
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## Next Steps
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When individual SDKs are created:
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1. Copy the appropriate pattern from the reference implementation
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2. Implement the `_execute_test` method with actual SDK calls
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3. Configure the SDK's Argo workflow to run the conformance runner
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4. Add the conformance report artifact upload step
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5. Link the report from the SDK's README
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