@Test
public void testConcatTransformationExecution() throws ScriptException, IOException, NoSuchMethodException, URISyntaxException {

	String concatFunc = resourceFileToString("concat.js");
	transformationFunction = new TransformationFunction("1", concatFunc);
	JsonNode result = executionEngine.execute(jsonData, transformationFunction);
	Assert.assertEquals("13.929755188361455, 50.96458457915114", result.get("combinedCoords").asText());
}