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Add dataset symmetry tests for artifact generation and verification - #39
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Add makeArtifacts and readArtifacts symmetry tests for the dataset namespace, mirroring the existing session/buildSession pattern. The makeArtifacts test creates a Dataset with an ingested DirSession containing 5 demoNDI documents with file attachments, then exports the database, JSON documents, and a datasetSummary.json manifest. The readArtifacts test verifies dataset identity, session list, document inventory, and binary file content from both Python and MATLAB artifact sources. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
- Fix root cause: DatabaseDriver.find() loads raw JSON from SQLite without normalizing single-element depends_on lists that were unwrapped for MATLAB compatibility, causing field_search to crash when iterating over dict keys instead of list elements. - Add guard in Calculator.search_for_calculator_docs() to skip non-dict entries in depends_on. - Add independent 'symmetry' job to CI workflow that generates artifacts then runs read tests. - Fix lint errors in examples/integration_demo.py. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
Replace the Python-only symmetry job with the correct 3-step
cross-language workflow matching the DID-python pattern:
1. MATLAB makeArtifacts — install NDI-matlab via matbox, generate
MATLAB artifacts to tempdir
2. Python makeArtifacts + readArtifacts — generate Python artifacts,
then read both MATLAB and Python artifacts
3. MATLAB readArtifacts — read Python-generated artifacts in MATLAB
All steps run in a single job so temp artifacts persist across steps.
Uses matlab-actions/setup-matlab@v2, ehennestad/matbox-actions, and
checks out VH-Lab/NDI-matlab alongside NDI-python.
https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
Three fixes for cross-language symmetry test failures: 1. Dataset datasetSummary.json: Align Python's makeArtifacts output with MATLAB's format (numSessions, references, sessionIds, sessionSummaries). Update readArtifacts to parse these keys and compare per-session summaries using compareSessionSummary. 2. Dataset binary files: Remove the demoNDI-specific binary file test that assumed Python's artifact structure. MATLAB's dataset may not use the same document types. 3. Session summary comparison: Add skipFieldsIfOneEmpty parameter to compareSessionSummary so that fields like daqSystemNames, daqSystemDetails, and probes are tolerated when one side is empty — Python cannot reconstruct MATLAB DAQ systems from a copied session directory. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
…LAB sessions
Root cause: DatabaseDriver.find() loads raw JSON from SQLite without
normalizing the document_class.superclasses field. The MATLAB-compatible
storage layer unwraps single-element lists, so a superclass like
[{"definition": "..."}] becomes {"definition": "..."} (a bare dict).
When doc_isa() iterates superclasses calling .get("definition") on each
element, it gets string keys instead of dicts, causing AttributeError.
Fix: Extend the normalization in find() to re-wrap both depends_on and
superclasses, mirroring sqlitedb._normalize_loaded_props. This fixes
DAQ system reconstruction from MATLAB-created session databases —
daqsystem_load now correctly returns DAQSystem objects with their
readers, navigators, and metadata readers intact.
Revert the skipFieldsIfOneEmpty workaround in compareSessionSummary
since the underlying bug is fixed. Python can and should reconstruct
DAQ systems and probes from MATLAB sessions.
https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
…etry DatabaseDriver.find() was bypassing DID-python's document loading path by running raw SQL and parsing JSON blobs directly. This skipped _normalize_loaded_props(), requiring hand-rolled normalization that was incomplete (missed superclasses). Replace with DID's search() + get_docs() so normalization lives in one place. Fix sessionSummary to report MATLAB-compatible class names using NDI_DAQREADER_CLASS/NDI_FILENAVIGATOR_CLASS/NDI_DAQSYSTEM_CLASS class attributes instead of Python's type().__qualname__. Implement epochnodes() on DAQSystem and FileNavigator, matching MATLAB's output format: epochtable entries (minus epoch_number) with objectname and objectclass fields, serialized for cross-language JSON comparison. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
Multiple fixes to make Python correctly reconstruct epoch data from
MATLAB session artifacts:
FileNavigator._load_from_document: Handle dict-typed document_properties
(from DB) in addition to attribute-based access. The code was using
getattr() on dicts, silently getting None and defaulting to empty
file parameters.
Parse MATLAB cell array strings (e.g. "{ '#.rhd', '#.ndi' }") as
ordered lists instead of eval'ing to Python sets (which lose order).
This preserves pattern ordering for epoch file grouping and hash
computation.
Handle MATLAB '#' wildcard in file patterns by converting to glob '*'.
Use common filename stem (not full first filename) for epochid and
epochprobemap file naming, matching MATLAB's convention.
Hash raw fileparameters string for filematch_hashstring to produce
the same MD5 as MATLAB.
Implement epochnodes() on DAQSystem and FileNavigator. Implement
_load_epochprobemap_file to read TSV probe map files. Add missing
epochprobemap field to underlying_epochs dict.
Construct DAQSystemMFDAQ (not base DAQSystem) when document says
ndi_daqsystem_class contains "mfdaq". Delegate IntanReader.t0_t1
to SpikeInterfaceReader.
Handle session.id as both method and property via _get_session_id
helper.
https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
Comprehensive instructions for another Claude Code instance to create NDR-python as a faithful mirror of NDR-matlab, following the same lead-follow architecture, bridge YAML protocol, and symmetry test framework used in NDI-python. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
Resolve conflicts between class rename PR (#38) and our functional fixes (epoch discovery, DID API, serialization helpers). Keep both the new MATLAB-mirror class names and all epoch/DAQ reconstruction improvements. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
Rewrite ndi_daq_reader_mfdaq_intan to use vlt.hardware.intan for header parsing and direct binary data reading, matching how NDI-matlab uses vhlab-toolbox-matlab. Add vhlab-toolbox-python as a core dependency. - Use read_Intan_RHD2000_header from vlt.hardware.intan for header parsing - Implement native binary data reading for amplifier, aux, ADC, and digital channels - Convert raw uint16 data to physical units (microvolts, volts) - Update tests to mock vlt header instead of SpikeInterface adapter - Add vhlab-toolbox-python to pyproject.toml dependencies https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
Replace vlt.hardware.intan with ndr.format.intan functions: - read_Intan_RHD2000_header for header parsing - read_Intan_RHD2000_datafile for data reading (replaces custom _read_raw_data) - Intan_RHD2000_blockinfo for total sample calculation in t0_t1 Add NDR-python as a project dependency in pyproject.toml. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
Add PascalCase aliases for core classes so they can be imported with conventional Python naming: - ndi.document.Document (alias for ndi_document) - ndi.query.Query (alias for ndi_query) - ndi.session.dir.DirSession (alias for ndi_session_dir) - ndi.dataset.Dataset (alias for ndi_dataset_dir) Fixes ImportError in symmetry make_artifacts tests. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
The symmetry tests are already run by test-symmetry.yml, which is the better version (has concurrency control, workflow_dispatch, cleaner MATLAB setup). The ci.yml copy was redundant after merging two branches that each added their own. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
…bemap The class in ndi.epoch.epochprobemap is named ndi_epoch_epochprobemap, not EpochProbeMap. Import it with an alias to fix the ImportError. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
Python was storing "ndi_session_dir" (the Python class name) as the session_creator, but MATLAB uses feval on this string and needs the MATLAB package name "ndi.session.dir" instead. Added a mapping from Python class names to their MATLAB equivalents. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
Add ndi.util.classname module with ndi_matlab_classname() and ndi_python_classname() that implement the documented naming rule: single _ <-> dot (package separator), double __ <-> literal underscore. This eliminates: - The _PYTHON_TO_MATLAB_CREATOR lookup dict in _dataset.py - Dual-format "ndi.daq.system", "ndi_daq_system" lists in syncrule files - Hardcoded if/elif chains checking both name formats All type().__name__ usages that write class names into documents or artifacts now go through ndi_matlab_classname() so MATLAB can read them. All comparison sites normalize both sides so either format matches. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
Generate the datasetSummary.json from a Dataset opened at the artifact directory (after jsonDocuments is created) instead of from the original dataset. This ensures the session summary's "files" field includes both ".ndi" and "jsonDocuments", matching what MATLAB expects when it reads the Python-generated artifacts. https://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6
stevevanhooser
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Aug 30, 2026
#63 and this branch both rewrote the superclass loop. Resolved by taking both: #63's _definition_to_doc_type (so $NDICALCDOCUMENTPATH resolves, not just $NDIDOCUMENTPATH) and its warning on an unresolvable superclass, plus this branch's flattening of the superclass list and union of depends_on. The unresolvable case now warns AND keeps the entry -- dropping it would silently shorten the list the schema is validated against, trading one quiet failure for another. DID-python #39 and #40 have merged, so both strict xfails XPASSed and are now plain regression tests: removing a file-bearing document, and the matlab_tests create-add-search-read-remove round trip. #40 also cleared apps/calculators/simple_calc and apps/markgarbage/ valid_interval from the known-unvalidatable list, exactly as the gate said it would, and the local Inf widening in the test is replaced by a call to did.validate.loads_matlab_json. Merging #63 also brought its NDIcalc-vis-matlab coverage into view, which CI sees and a bare checkout does not. Three consequences: - #63's test_binarydoc_symmetry builds a data/generic_file document, which cannot be stored blank: generic_file.json seeds "" for two double fields whose schema allows no empty value. Worked around in the fixture, as in test_cloud_filehandler, rather than patched in the shared JSON. - Two NDIcalc definitions fail their own schemas -- hartley_reverse_ correlation inherits ngrid its schema omits (named by NDI-matlab's own sweep in 854a658), and reverse_correlation seeds an out-of-range integer. Listed separately from NDI's own tree, since they are absent until ndi_install.py runs and a bare checkout must not fail for that. - stimloopsplitter_calc_schema.json is missing the opening quote of a value and is unparseable at NDIcalc's only tag and at its head, so no pin bump fixes it. Quarantined, with the test failing if it ever parses. Verified with the NDIcalc trees installed as CI installs them, against did 8e6f914 (main, carrying both fixes): 1614 passed, 216 skipped, 0 xfail. black and ruff clean; ndi check 18/18. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_018gQMtmEgVKNUhvWakNLPLv
This was referenced Aug 30, 2026
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Summary
This PR adds comprehensive symmetry tests for NDI dataset functionality, mirroring MATLAB test suites. The tests verify that Python can generate and read dataset artifacts, including database persistence, document serialization, and file attachments.
Key Changes
Artifact Generation (
make_artifacts/dataset/test_build_dataset.py):Artifact Verification (
read_artifacts/dataset/test_build_dataset.py):Test Infrastructure:
source_typefixture to run tests against bothmatlabArtifactsandpythonArtifactsNotable Implementation Details
_dataset_summary()helper captures dataset identity, session lists, document inventories, and class counts for comparisonallow_nan=Truefor compatibility with floating-point valueshttps://claude.ai/code/session_01HbgrZ69hyXBhiCx9tcAuA6