blob: 22bb8300931a1ee557bea8dd218da55b45fd829a [file] [log] [blame]
// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import 'dart:async';
import 'dart:convert';
import 'package:stream_channel/stream_channel.dart';
import 'package:test/test.dart';
void main() {
var streamController;
var sinkController;
StreamChannel<String> channel;
setUp(() {
streamController = new StreamController();
sinkController = new StreamController();
channel =
new StreamChannel<String>(, sinkController.sink);
test("decodes JSON emitted by the channel", () {
var transformed = channel.transform(jsonDocument);
streamController.add('{"foo": "bar"}');
expect(, completion(equals({"foo": "bar"})));
test("encodes objects added to the channel", () {
var transformed = channel.transform(jsonDocument);
transformed.sink.add({"foo": "bar"});
completion(equals(JSON.encode({"foo": "bar"}))));
test("supports the reviver function", () {
var transformed = channel.transform(
new JsonDocumentTransformer(reviver: (key, value) => "decoded"));
streamController.add('{"foo": "bar"}');
expect(, completion(equals("decoded")));
test("supports the toEncodable function", () {
var transformed = channel.transform(
new JsonDocumentTransformer(toEncodable: (object) => "encoded"));
transformed.sink.add(new Object());
expect(, completion(equals('"encoded"')));
test("emits a stream error when incoming JSON is malformed", () {
var transformed = channel.transform(jsonDocument);
expect(, throwsFormatException);
test("synchronously throws if an unencodable object is added", () {
var transformed = channel.transform(jsonDocument);
expect(() => transformed.sink.add(new Object()),
throwsA(new isInstanceOf<JsonUnsupportedObjectError>()));