@Test
    public void testParsingOfTensorWithEmptyCells() {
        assertSparseTensorField("tensor(x{},y{}):{}",
                                createPutWithSparseTensor(inputJson("{ 'cells': [] }")));
    }
Basic test of JSON streams to Vespa document instances.

@author Steinar Knutsen
@author bratseth
document/src/test/java/com/yahoo/document/json/JsonReaderTestCase.java