profile.add("root", HadoopDataSourceProfile.KEY_PATH, folder.getRoot().toURI().toURL().toString());
profile.put();
put("base/output.txt", "Hello, world!");
SpiExporterRetriever testee = new SpiExporterRetriever(getClass().getClassLoader());
DataModelSource input = testee.createSource(
new MockTextDefinition(),
new MockOutputDescription("base", "output.txt", format),
profile.getTextContext());
List<String> list = get(input);
assertThat(list, is(Arrays.asList("Hello, world!")));