private void assertEval(String opName, Tensor x, Tensor y, Tensor expected) {
        assertEval(opName, x, y, null, null, null, expected, null, 0);
    }
Unit tests for ONNX operators. The number on the test reflects the minimum
opset number for the operations tested.

@author lesters
model-integration/src/test/java/ai/vespa/rankingexpression/importer/onnx/OnnxOperationsTestCase.java