@Test
    public void tensor_modify_update_on_sparse_tensor_with_single_dimension_short_form() {
        assertTensorModifyUpdate("{{x:a}:2.0, {x:c}: 3.0}", TensorModifyUpdate.Operation.REPLACE, "sparse_single_dimension_tensor",
                                 """
                                 {
                                   "operation": "replace",
                                   "cells": {
                                     "a": 2.0,
                                     "c": 3.0
                                   }
                                 }""");
    }
Tests parsing of various tensor values set at the root, i.e. no 'cells', 'blocks' or 'values'
document/src/test/java/com/yahoo/document/json/JsonReaderTestCase.java