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This test has very short queries, because it only tests a single operator (or some more if they are needed - like windows for aggregations 
). Each sub folder corresponds to a sub test and each sub test is a pair of the query and the expected output. The folder is searched recursively for new pairs, so you may simply add a new subfolder with a pair of qry- and csv-file to create a new operator-test or you can use the Testcase Generator to create a new test case for an operator.
test.component.keyvalue
This test checks if the key value operators work and have the expected results. For now key value project and select and the keyvaluetotuple and tupletokeyvalue operators are tested. The input and output data is given as json files.
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