Enable keras v1 api tests.

Signed-off-by: Jay Zhang <[email protected]>

Author: fatcat-z

.github/actions/unit_test/action.yml

@@ -46,6 +46,7 @@ runs:
         export TF2ONNX_SKIP_TFLITE_TESTS=${{ inputs.skip_tflite }}
         export TF2ONNX_SKIP_TFJS_TESTS=True
         export TF2ONNX_SKIP_TF_TESTS=False
+        export TF_USE_LEGACY_KERAS=True
         python -m pytest --cov=tf2onnx --cov-report=term --disable-pytest-warnings -r s tests --cov-append --junitxml=junit/test-results.xml
         ls
 
@@ -58,5 +59,6 @@ runs:
         set TF2ONNX_SKIP_TFLITE_TESTS=${{ inputs.skip_tflite }}
         set TF2ONNX_SKIP_TFJS_TESTS=True
         set TF2ONNX_SKIP_TF_TESTS=False
+        set TF_USE_LEGACY_KERAS=True
         python -m pytest --cov=tf2onnx --cov-report=term --disable-pytest-warnings -r s tests --cov-append --junitxml=junit/test-results.xml
         ls

tests/utils/setup_test_env.sh

@@ -28,6 +28,8 @@ pip install tensorflow==$TF_VERSION
 pip uninstall -y protobuf
 pip install "protobuf~=3.20"
 
+pip install tf_keras
+
 python setup.py install
 
 echo "----- List all of depdencies:"