README

tests/python-pytest/onnx/README.md

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+# ONNX tests
+
+## Directory structure:
+
+```bash
+.
+├── README.md
+├── backend.py
+├── backend_rep.py
+├── backend_test.py
+├── gluon_backend_test.py
+├── mxnet_backend_test.py
+├── mxnet_export_test.py
+├── test_cases.py
+├── test_models.py
+└── test_node.py
+```
+
+* `backend.py` - MXNetBackend. This file contains prepare(). \
+This class can be used for both, MXNet and Gluon backend.
+* `backend_rep.py` - MXNetBackendRep and GluonBackendRep for running inference
+* `backend_test.py` - prepare tests by including tests from `test_cases.py`
+* `gluon_backend_test.py` - Set backend as gluon and execute ONNX tests for ONNX->Gluon import.
+* `mxnet_backend_test.py` - Set backend as gluon and add tests for ONNX->MXNet import/export.
+Since MXNetBackend for export, tests both import and export, the test list in this file is
+a union of tests that execute for import and export, export alone, and import alone.
+* `mxnet_export_test.py` - Execute unit tests for testing MXNet export code - this is not specific to
+any operator.
+* `test_cases.py` - list of test cases for operators/models that are supported
+for "both", import and export, "import" alone, or "export" alone.
+* `test_models.py` - custom tests for models
+* `test_node.py` - custom tests for operators. These tests are written independent of ONNX tests, in case
+ONNX doesn't have tests yet or for MXNet specific operators.