Add an HTTP client based on Curl.

pkg/http/test/curl_client_test.dart

Index: pkg/http/test/curl_client_test.dart
diff --git a/pkg/http/test/curl_client_test.dart b/pkg/http/test/curl_client_test.dart
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+++ b/pkg/http/test/curl_client_test.dart
@@ -0,0 +1,263 @@
+// 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 curl_client_test;
+
+import 'dart:io';
+import 'dart:isolate';
+import 'dart:uri';
+
+import '../../unittest/lib/unittest.dart';
+import '../lib/http.dart' as http;
+import '../lib/src/utils.dart';
+import 'utils.dart';
+
+void main() {
+  setUp(startServer);
+  tearDown(stopServer);
+
+  test('head', () {
+    expect(new http.CurlClient().head(serverUrl).transform((response) {
+      expect(response.statusCode, equals(200));
+      expect(response.body, equals(''));
+    }), completes);
+  });
+
+  test('get', () {
+    expect(new http.CurlClient().get(serverUrl, headers: {
+      'X-Random-Header': 'Value',
+      'X-Other-Header': 'Other Value'
+    }).transform((response) {
+      expect(response.statusCode, equals(200));
+      expect(response.body, parse(equals({
+        'method': 'GET',
+        'path': '/',
+        'headers': {
+          'x-random-header': ['Value'],
+          'x-other-header': ['Other Value']
+        },
+      })));
+    }), completes);
+  });
+
+  test('post', () {
+    expect(new http.CurlClient().post(serverUrl, headers: {
+      'X-Random-Header': 'Value',
+      'X-Other-Header': 'Other Value'
+    }, fields: {
+      'some-field': 'value',
+      'other-field': 'other value'
+    }).transform((response) {
+      expect(response.statusCode, equals(200));
+      expect(response.body, parse(equals({
+        'method': 'POST',
+        'path': '/',
+        'headers': {
+          'content-type': [
+            'application/x-www-form-urlencoded; charset=UTF-8'
+          ],
+          'content-length': ['42'],
+          'x-random-header': ['Value'],
+          'x-other-header': ['Other Value']
+        },
+        'body': 'some-field=value&other-field=other%20value'
+      })));
+    }), completes);
+  });
+
+  test('post without fields', () {
+    expect(new http.CurlClient().post(serverUrl, headers: {
+      'X-Random-Header': 'Value',
+      'X-Other-Header': 'Other Value',
+      'Content-Type': 'text/plain'
+    }).transform((response) {
+      expect(response.statusCode, equals(200));
+      expect(response.body, parse(equals({
+        'method': 'POST',
+        'path': '/',
+        'headers': {
+          'content-type': ['text/plain'],
+          'x-random-header': ['Value'],
+          'x-other-header': ['Other Value']
+        }
+      })));
+    }), completes);
+  });
+
+  test('put', () {
+    expect(new http.CurlClient().put(serverUrl, headers: {
+      'X-Random-Header': 'Value',
+      'X-Other-Header': 'Other Value'
+    }, fields: {
+      'some-field': 'value',
+      'other-field': 'other value'
+    }).transform((response) {
+      expect(response.statusCode, equals(200));
+      expect(response.body, parse(equals({
+        'method': 'PUT',
+        'path': '/',
+        'headers': {
+          'content-type': [
+            'application/x-www-form-urlencoded; charset=UTF-8'
+          ],
+          'content-length': ['42'],
+          'x-random-header': ['Value'],
+          'x-other-header': ['Other Value']
+        },
+        'body': 'some-field=value&other-field=other%20value'
+      })));
+    }), completes);
+  });
+
+  test('put without fields', () {
+    expect(new http.CurlClient().put(serverUrl, headers: {
+      'X-Random-Header': 'Value',
+      'X-Other-Header': 'Other Value',
+      'Content-Type': 'text/plain'
+    }).transform((response) {
+      expect(response.statusCode, equals(200));
+      expect(response.body, parse(equals({
+        'method': 'PUT',
+        'path': '/',
+        'headers': {
+          'content-type': ['text/plain'],
+          'x-random-header': ['Value'],
+          'x-other-header': ['Other Value']
+        }
+      })));
+    }), completes);
+  });
+
+  test('delete', () {
+    expect(new http.CurlClient().delete(serverUrl, headers: {
+      'X-Random-Header': 'Value',
+      'X-Other-Header': 'Other Value'
+    }).transform((response) {
+      expect(response.statusCode, equals(200));
+      expect(response.body, parse(equals({
+        'method': 'DELETE',
+        'path': '/',
+        'headers': {
+          'x-random-header': ['Value'],
+          'x-other-header': ['Other Value']
+        }
+      })));
+    }), completes);
+  });
+
+  test('read', () {
+    expect(new http.CurlClient().read(serverUrl, headers: {
+      'X-Random-Header': 'Value',
+      'X-Other-Header': 'Other Value'
+    }), completion(parse(equals({
+      'method': 'GET',
+      'path': '/',
+      'headers': {
+        'x-random-header': ['Value'],
+        'x-other-header': ['Other Value']
+      },
+    }))));
+  });
+
+  test('read throws an error for a 4** status code', () {
+    expect(new http.CurlClient().read(serverUrl.resolve('/error')),
+        throwsHttpException);
+  });
+
+  test('readBytes', () {
+    var future = new http.CurlClient().readBytes(serverUrl, headers: {
+      'X-Random-Header': 'Value',
+      'X-Other-Header': 'Other Value'
+    }).transform((bytes) => new String.fromCharCodes(bytes));
+
+    expect(future, completion(parse(equals({
+      'method': 'GET',
+      'path': '/',
+      'headers': {
+        'x-random-header': ['Value'],
+        'x-other-header': ['Other Value']
+      },
+    }))));
+  });
+
+  test('readBytes throws an error for a 4** status code', () {
+    expect(new http.CurlClient().readBytes(serverUrl.resolve('/error')),
+        throwsHttpException);
+  });
+
+  test('#send a StreamedRequest', () {
+    var client = new http.CurlClient();
+    var request = new http.StreamedRequest("POST", serverUrl);
+    request.headers[HttpHeaders.CONTENT_TYPE] =
+      'application/json; charset=utf-8';
+
+    var future = client.send(request).chain((response) {
+      expect(response.statusCode, equals(200));
+      return consumeInputStream(response.stream);
+    }).transform((bytes) => new String.fromCharCodes(bytes));
+    future.onComplete((_) => client.close());
+
+    expect(future, completion(parse(equals({
+      'method': 'POST',
+      'path': '/',
+      'headers': {
+        'content-type': ['application/json; charset=utf-8'],
+        'transfer-encoding': ['chunked']
+      },
+      'body': '{"hello": "world"}'
+    }))));
+
+    request.stream.writeString('{"hello": "world"}');
+    request.stream.close();
+  });
+
+  test('with one redirect', () {
+    var url = serverUrl.resolve('/redirect');
+    expect(new http.CurlClient().get(url).transform((response) {
+      expect(response.statusCode, equals(200));
+      expect(response.body, parse(equals({
+        'method': 'GET',
+        'path': '/',
+        'headers': {}
+      })));
+    }), completes);
+  });
+
+  test('with too many redirects', () {
+    expect(new http.CurlClient().get(serverUrl.resolve('/loop?1')),
+        throwsRedirectLimitExceededException);
+  });
+
+  test('with a generic failure', () {
+    expect(new http.CurlClient().get('url fail'),
+        throwsHttpException);
+  });
+
+  test('with one redirect via HEAD', () {
+    var url = serverUrl.resolve('/redirect');
+    expect(new http.CurlClient().head(url).transform((response) {
+      expect(response.statusCode, equals(200));
+    }), completes);
+  });
+
+  test('with too many redirects via HEAD', () {
+    expect(new http.CurlClient().head(serverUrl.resolve('/loop?1')),
+        throwsRedirectLimitExceededException);
+  });
+
+  test('with a generic failure via HEAD', () {
+    expect(new http.CurlClient().head('url fail'),
+        throwsHttpException);
+  });
+
+  test('without following redirects', () {
+    var request = new http.Request('GET', serverUrl.resolve('/redirect'));
+    request.followRedirects = false;
+    expect(new http.CurlClient().send(request).chain(http.Response.fromStream)
+        .transform((response) {
+      expect(response.statusCode, equals(302));
+      expect(response.isRedirect, true);
+    }), completes);
+  });
+}