// Copyright (c) 2015, 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 'package:shelf/shelf.dart' as shelf;
import 'package:test/src/util/one_off_handler.dart';
import 'package:test/test.dart';

void main() {
  OneOffHandler handler;
  setUp(() => handler = OneOffHandler());

  Future<shelf.Response> _handle(shelf.Request request) =>
      Future.sync(() => handler.handler(request));

  test('returns a 404 for a root URL', () async {
    var request = shelf.Request('GET', Uri.parse('http://localhost/'));
    expect((await _handle(request)).statusCode, equals(404));
  });

  test('returns a 404 for an unhandled URL', () async {
    var request = shelf.Request('GET', Uri.parse('http://localhost/1'));
    expect((await _handle(request)).statusCode, equals(404));
  });

  test('passes a request to a handler only once', () async {
    var path = handler.create(expectAsync1((request) {
      expect(request.method, equals('GET'));
      return shelf.Response.ok('good job!');
    }));

    var request = shelf.Request('GET', Uri.parse('http://localhost/$path'));
    var response = await _handle(request);
    expect(response.statusCode, equals(200));
    expect(response.readAsString(), completion(equals('good job!')));

    request = shelf.Request('GET', Uri.parse('http://localhost/$path'));
    expect((await _handle(request)).statusCode, equals(404));
  });

  test('passes requests to the correct handlers', () async {
    var path1 = handler.create(expectAsync1((request) {
      expect(request.method, equals('GET'));
      return shelf.Response.ok('one');
    }));

    var path2 = handler.create(expectAsync1((request) {
      expect(request.method, equals('GET'));
      return shelf.Response.ok('two');
    }));

    var path3 = handler.create(expectAsync1((request) {
      expect(request.method, equals('GET'));
      return shelf.Response.ok('three');
    }));

    var request = shelf.Request('GET', Uri.parse('http://localhost/$path2'));
    var response = await _handle(request);
    expect(response.statusCode, equals(200));
    expect(response.readAsString(), completion(equals('two')));

    request = shelf.Request('GET', Uri.parse('http://localhost/$path1'));
    response = await _handle(request);
    expect(response.statusCode, equals(200));
    expect(response.readAsString(), completion(equals('one')));

    request = shelf.Request('GET', Uri.parse('http://localhost/$path3'));
    response = await _handle(request);
    expect(response.statusCode, equals(200));
    expect(response.readAsString(), completion(equals('three')));
  });
}