Add a package for authenticating via OAuth2.

pkg/oauth2/test/handle_access_token_response_test.dart

+// 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 handle_access_token_response_test;
+
+import 'dart:io';
+import 'dart:json';
+import 'dart:uri';
+
+import '../../unittest/lib/unittest.dart';
+import '../../http/lib/http.dart' as http;
+import '../lib/oauth2.dart' as oauth2;
+import '../lib/src/handle_access_token_response.dart';
+import 'utils.dart';
+
+final Uri tokenEndpoint = new Uri.fromString("https://example.com/token");
+
+final Date startTime = new Date.now();
+
+Credentials handle(http.Response response) =>
+  handleAccessTokenResponse(response, tokenEndpoint, startTime, ["scope"]);
+
+void main() {
+  group('an error response', () {
+    oauth2.Credentials handleError(
+        {String body: '{"error": "invalid_request"}',
+         int statusCode: 400,
+         Map<String, String> headers:
+             const {"content-type": "application/json"}}) =>
+      handle(new http.Response(body, statusCode, headers: headers));
+
+    test('causes an AuthorizationException', () {
+      expect(() => handleError(), throwsAuthorizationException);
+    });
+
+    test('with a 401 code causes an AuthorizationException', () {
+      expect(() => handleError(statusCode: 401), throwsAuthorizationException);
+    });
+
+    test('with an unexpected code causes a FormatException', () {
+      expect(() => handleError(statusCode: 500),
+          throwsFormatException);
+    });
+
+    test('with no content-type causes a FormatException', () {
+      expect(() => handleError(headers: {}), throwsFormatException);
+    });
+
+    test('with a non-JSON content-type causes a FormatException', () {
+      expect(() => handleError(headers: {
+        'content-type': 'text/plain'
+      }), throwsFormatException);
+    });
+
+    test('with a JSON content-type and charset causes an '
+        'AuthorizationException', () {
+      expect(() => handleError(headers: {
+        'content-type': 'application/json; charset=UTF-8'
+      }), throwsAuthorizationException);
+    });
+
+    test('with invalid JSON causes a FormatException', () {
+      expect(() => handleError(body: 'not json'),
+          throwsFormatException);
+    });
+
+    test('with a non-string error causes a FormatException', () {
+      expect(() => handleError(body: '{"error": 12}'),
+          throwsFormatException);
+    });
+
+    test('with a non-string error_description causes a FormatException', () {
+      expect(() => handleError(body: JSON.stringify({
+        "error": "invalid_request",
+        "error_description": 12
+      })), throwsFormatException);
+    });
+
+    test('with a non-string error_uri causes a FormatException', () {
+      expect(() => handleError(body: JSON.stringify({
+        "error": "invalid_request",
+        "error_uri": 12
+      })), throwsFormatException);
+    });
+
+    test('with a string error_description causes a AuthorizationException', () {
+      expect(() => handleError(body: JSON.stringify({
+        "error": "invalid_request",
+        "error_description": "description"
+      })), throwsAuthorizationException);
+    });
+
+    test('with a string error_uri causes a AuthorizationException', () {
+      expect(() => handleError(body: JSON.stringify({
+        "error": "invalid_request",
+        "error_uri": "http://example.com/error"
+      })), throwsAuthorizationException);
+    });
+  });
+
+  group('a success response', () {
+    oauth2.Credentials handleSuccess(
+        {String contentType: "application/json",
+         String accessToken: 'access token',
+         String tokenType: 'bearer',
+         String expiresIn,
+         String refreshToken,
+         String scope}) {
+      return handle(new http.Response(JSON.stringify({
+        'access_token': accessToken,
+        'token_type': tokenType,
+        'expires_in': expiresIn,
+        'refresh_token': refreshToken,
+        'scope': scope
+      }), 200, headers: {'content-type': contentType}));
+    }
+
+    test('returns the correct credentials', () {
+      var credentials = handleSuccess();
+      expect(credentials.accessToken, equals('access token'));
+      expect(credentials.tokenEndpoint.toString(),
+          equals(tokenEndpoint.toString()));
+    });
+
+    test('with no content-type causes a FormatException', () {
+      expect(() => handleSuccess(contentType: null), throwsFormatException);
+    });
+
+    test('with a non-JSON content-type causes a FormatException', () {
+      expect(() => handleSuccess(contentType: 'text/plain'),
+          throwsFormatException);
+    });
+
+    test('with a JSON content-type and charset returns the correct '
+        'credentials', () {
+      var credentials = handleSuccess(
+          contentType: 'application/json; charset=UTF-8');
+      expect(credentials.accessToken, equals('access token'));
+    });
+
+    test('with a null access token throws a FormatException', () {
+      expect(() => handleSuccess(accessToken: null), throwsFormatException);
+    });
+
+    test('with a non-string access token throws a FormatException', () {
+      expect(() => handleSuccess(accessToken: 12), throwsFormatException);
+    });
+
+    test('with a null token type throws a FormatException', () {
+      expect(() => handleSuccess(tokenType: null), throwsFormatException);
+    });
+
+    test('with a non-string token type throws a FormatException', () {
+      expect(() => handleSuccess(tokenType: 12), throwsFormatException);
+    });
+
+    test('with a non-"bearer" token type throws a FormatException', () {
+      expect(() => handleSuccess(tokenType: "mac"), throwsFormatException);
+    });
+
+    test('with a non-int expires-in throws a FormatException', () {
+      expect(() => handleSuccess(expiresIn: "whenever"), throwsFormatException);
+    });
+
+    test('with expires-in sets the expiration to ten seconds earlier than the '
+        'server says', () {
+      var credentials = handleSuccess(expiresIn: 100);
+      expect(credentials.expiration.millisecondsSinceEpoch,
+          startTime.millisecondsSinceEpoch + 90 * 1000);
+    });
+
+    test('with a non-string refresh token throws a FormatException', () {
+      expect(() => handleSuccess(refreshToken: 12), throwsFormatException);
+    });
+
+    test('with a refresh token sets the refresh token', () {
+      var credentials = handleSuccess(refreshToken: "refresh me");
+      expect(credentials.refreshToken, equals("refresh me"));
+    });
+
+    test('with a non-string scope throws a FormatException', () {
+      expect(() => handleSuccess(scope: 12), throwsFormatException);
+    });
+
+    test('with a scope sets the scopes', () {
+      var credentials = handleSuccess(scope: "scope1 scope2");
+      expect(credentials.scopes, equals(["scope1", "scope2"]));
+    });
+  });
+}