public PropertiesCompletionTestCase() {
MockNode root = new MockNode("root");
MockOperation op = new MockOperation("operation-no-properties");
root.addOperation(op);
op = new MockOperation("operation-properties-one-two-three");
op.setPropertyNames(Arrays.asList("one", "two", "three"));
root.addOperation(op);
ctx = new MockCommandContext();
ctx.setOperationCandidatesProvider(new MockOperationCandidatesProvider(root));
completer = new OperationRequestCompleter();