Add an HTTP library that wraps dart:io.

pkg/http/test/request_test.dart

Index: pkg/http/test/request_test.dart
diff --git a/pkg/http/test/request_test.dart b/pkg/http/test/request_test.dart
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+// Copyright (c) 2012, 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.
+
+library request_test;
+
+import 'dart:io';
+
+import '../../unittest/lib/unittest.dart';
+import '../lib/http.dart' as http;
+import '../lib/src/utils.dart';
+import 'utils.dart';
+
+void main() {
+  test('.send', () {
+    startServer();
+
+    var request = new http.Request('POST', serverUrl);
+    request.body = "hello";
+    var future = request.send().chain((response) {
+      expect(response.statusCode, equals(200));
+      return consumeInputStream(response.stream);
+    }).transform((bytes) => new String.fromCharCodes(bytes));
+    future.onComplete((_) => stopServer());
+
+    expect(future, completion(parse(equals({
+      'method': 'POST',
+      'path': '/',
+      'headers': {
+        'content-type': ['text/plain; charset=UTF-8'],
+        'content-length': ['5']
+      },
+      'body': 'hello'
+    }))));
+  });
+
+  group('#contentLength', () {
+    test('is computed from bodyBytes', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.bodyBytes = [1, 2, 3, 4, 5];
+      expect(request.contentLength, equals(5));
+      request.bodyBytes = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+      expect(request.contentLength, equals(10));
+    });
+
+    test('is computed from body', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.body = "hello";
+      expect(request.contentLength, equals(5));
+      request.body = "hello, world";
+      expect(request.contentLength, equals(12));
+    });
+
+    test('is not directly mutable', () {
+      var request = new http.Request('POST', dummyUrl);
+      expect(() => request.contentLength = 50, throwsUnsupportedError);
+    });
+  });
+
+  group('#encoding', () {
+    test('defaults to utf-8', () {
+      var request = new http.Request('POST', dummyUrl);
+      expect(request.encoding.name, equals(Encoding.UTF_8.name));
+    });
+
+    test('can be set', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.encoding = Encoding.ISO_8859_1;
+      expect(request.encoding.name, equals(Encoding.ISO_8859_1.name));
+    });
+
+    test('is based on the content-type charset if it exists', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.headers[HttpHeaders.CONTENT_TYPE] =
+          'text/plain; charset=iso-8859-1';
+      expect(request.encoding.name, equals(Encoding.ISO_8859_1.name));
+    });
+
+    test('remains the default if the content-type charset is set and unset',
+        () {
+      var request = new http.Request('POST', dummyUrl);
+      request.encoding = Encoding.ISO_8859_1;
+      request.headers[HttpHeaders.CONTENT_TYPE] =
+          'text/plain; charset=utf-8';
+      expect(request.encoding.name, equals(Encoding.UTF_8.name));
+
+      request.headers.remove(HttpHeaders.CONTENT_TYPE);
+      expect(request.encoding.name, equals(Encoding.ISO_8859_1.name));
+    });
+
+    test('throws an error if the content-type charset is unknown', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.headers[HttpHeaders.CONTENT_TYPE] =
+          'text/plain; charset=not-a-real-charset';
+      expect(() => request.encoding, throwsFormatException);
+    });
+  });
+
+  group('#bodyBytes', () {
+    test('defaults to empty', () {
+      var request = new http.Request('POST', dummyUrl);
+      expect(request.bodyBytes, isEmpty);
+    });
+
+    test('can be set', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.bodyBytes = [104, 101, 108, 108, 111];
+      expect(request.bodyBytes, equals([104, 101, 108, 108, 111]));
+    });
+
+    test('changes when body changes', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.body = "hello";
+      expect(request.bodyBytes, equals([104, 101, 108, 108, 111]));
+    });
+  });
+
+  group('#body', () {
+    test('defaults to empty', () {
+      var request = new http.Request('POST', dummyUrl);
+      expect(request.body, isEmpty);
+    });
+
+    test('can be set', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.body = "hello";
+      expect(request.body, equals("hello"));
+    });
+
+    test('changes when bodyBytes changes', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.bodyBytes = [104, 101, 108, 108, 111];
+      expect(request.body, equals("hello"));
+    });
+
+    // TODO(nweiz): test that both the getter and the setter respect #encoding
+    // when issue 6284 is fixed.
+  });
+
+  group('#bodyFields', () {
+    test("can't be read without setting the content-type", () {
+      var request = new http.Request('POST', dummyUrl);
+      expect(() => request.bodyFields, throwsStateError);
+    });
+
+    test("can't be read with the wrong content-type", () {
+      var request = new http.Request('POST', dummyUrl);
+      request.headers[HttpHeaders.CONTENT_TYPE] = 'text/plain';
+      expect(() => request.bodyFields, throwsStateError);
+    });
+
+    test("can't be set with the wrong content-type", () {
+      var request = new http.Request('POST', dummyUrl);
+      request.headers[HttpHeaders.CONTENT_TYPE] = 'text/plain';
+      expect(() => request.bodyFields = {}, throwsStateError);
+    });
+
+    test('defaults to empty', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.headers[HttpHeaders.CONTENT_TYPE] =
+          'application/x-www-form-urlencoded';
+      expect(request.bodyFields, isEmpty);
+    });
+
+    test('can be set with no content-type', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.bodyFields = {'hello': 'world'};
+      expect(request.bodyFields, equals({'hello': 'world'}));
+    });
+
+    test('changes when body changes', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.headers[HttpHeaders.CONTENT_TYPE] =
+          'application/x-www-form-urlencoded';
+      request.body = 'key%201=value&key+2=other%2bvalue';
+      expect(request.bodyFields,
+          equals({'key 1': 'value', 'key 2': 'other+value'}));
+    });
+
+    // TODO(nweiz): test that both the getter and the setter respect #encoding
+    // when issue 6284 is fixed.
+  });
+
+  group('content-type header', () {
+    test('defaults to empty', () {
+      var request = new http.Request('POST', dummyUrl);
+      expect(request.headers[HttpHeaders.CONTENT_TYPE], isNull);
+    });
+
+    test('defaults to empty if only encoding is set', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.encoding = Encoding.ISO_8859_1;
+      expect(request.headers[HttpHeaders.CONTENT_TYPE], isNull);
+    });
+
+    test('is set to application/x-www-form-urlencoded with charset utf-8 if '
+        'bodyFields is set', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.bodyFields = {'hello': 'world'};
+      expect(request.headers[HttpHeaders.CONTENT_TYPE],
+          equals('application/x-www-form-urlencoded; charset=UTF-8'));
+    });
+
+    test('is set to application/x-www-form-urlencoded with the given charset '
+        'if bodyFields and encoding are set', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.encoding = Encoding.ISO_8859_1;
+      request.bodyFields = {'hello': 'world'};
+      expect(request.headers[HttpHeaders.CONTENT_TYPE],
+          equals('application/x-www-form-urlencoded; charset=ISO-8859-1'));
+    });
+
+    test('is set to text/plain and the given encoding if body and encoding are '
+        'both set', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.encoding = Encoding.ISO_8859_1;
+      request.body = 'hello, world';
+      expect(request.headers[HttpHeaders.CONTENT_TYPE],
+          equals('text/plain; charset=ISO-8859-1'));
+    });
+
+    test('is modified to include utf-8 if body is set', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.headers[HttpHeaders.CONTENT_TYPE] = 'application/json';
+      request.body = '{"hello": "world"}';
+      expect(request.headers[HttpHeaders.CONTENT_TYPE],
+          equals('application/json; charset=UTF-8'));
+    });
+
+    test('is modified to include the given encoding if encoding is set', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.headers[HttpHeaders.CONTENT_TYPE] = 'application/json';
+      request.encoding = Encoding.ISO_8859_1;
+      expect(request.headers[HttpHeaders.CONTENT_TYPE],
+          equals('application/json; charset=ISO-8859-1'));
+    });
+
+    test('has its charset overridden by an explicit encoding', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.headers[HttpHeaders.CONTENT_TYPE] =
+          'application/json; charset=utf-8';
+      request.encoding = Encoding.ISO_8859_1;
+      expect(request.headers[HttpHeaders.CONTENT_TYPE],
+          equals('application/json; charset=ISO-8859-1'));
+    });
+
+    test("doen't have its charset overridden by setting bodyFields", () {
+      var request = new http.Request('POST', dummyUrl);
+      request.headers[HttpHeaders.CONTENT_TYPE] =
+          'application/x-www-form-urlencoded; charset=iso-8859-1';
+      request.bodyFields = {'hello': 'world'};
+      expect(request.headers[HttpHeaders.CONTENT_TYPE],
+          equals('application/x-www-form-urlencoded; charset=iso-8859-1'));
+    });
+
+    test("doen't have its charset overridden by setting body", () {
+      var request = new http.Request('POST', dummyUrl);
+      request.headers[HttpHeaders.CONTENT_TYPE] =
+          'application/json; charset=iso-8859-1';
+      request.body = '{"hello": "world"}';
+      expect(request.headers[HttpHeaders.CONTENT_TYPE],
+          equals('application/json; charset=iso-8859-1'));
+    });
+  });
+
+  group('#finalize', () {
+    test('returns a stream that emits the request body', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.body = "Hello, world!";
+      expect(
+          consumeInputStream(request.finalize())
+              .transform((bytes) => new String.fromCharCodes(bytes)),
+          completion(equals("Hello, world!")));
+    });
+
+    test('freezes #persistentConnection', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.finalize();
+
+      expect(request.persistentConnection, isTrue);
+      expect(() => request.persistentConnection = false, throwsStateError);
+    });
+
+    test('freezes #followRedirects', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.finalize();
+
+      expect(request.followRedirects, isTrue);
+      expect(() => request.followRedirects = false, throwsStateError);
+    });
+
+    test('freezes #maxRedirects', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.finalize();
+
+      expect(request.maxRedirects, equals(5));
+      expect(() => request.maxRedirects = 10, throwsStateError);
+    });
+
+    test('freezes #encoding', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.finalize();
+
+      expect(request.encoding.name, equals(Encoding.UTF_8.name));
+      expect(() => request.encoding = Encoding.ASCII, throwsStateError);
+    });
+
+    test('freezes #bodyBytes', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.bodyBytes = [1, 2, 3];
+      request.finalize();
+
+      expect(request.bodyBytes, equals([1, 2, 3]));
+      expect(() => request.bodyBytes = [4, 5, 6], throwsStateError);
+    });
+
+    test('freezes #body', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.body = "hello";
+      request.finalize();
+
+      expect(request.body, equals("hello"));
+      expect(() => request.body = "goodbye", throwsStateError);
+    });
+
+    test('freezes #bodyFields', () {
+      var request = new http.Request('POST', dummyUrl);
+      request.bodyFields = {"hello": "world"};
+      request.finalize();
+
+      expect(request.bodyFields, equals({"hello": "world"}));
+      expect(() => request.bodyFields = {}, throwsStateError);
+    });
+
+    test("can't be called twice", () {
+      var request = new http.Request('POST', dummyUrl);
+      request.finalize();
+      expect(request.finalize, throwsStateError);
+    });
+  });
+}
+