Make the oauth2 lib handle OAuth2 401 errors.

pkg/oauth2/test/utils_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 utils_test;
+
+import '../../unittest/lib/unittest.dart';
+import '../lib/src/utils.dart';
+
+
+void main() {
+  group('AuthenticateHeader', () {
+    test("parses a scheme", () {
+      var header = new AuthenticateHeader.parse('bearer');
+      expect(header.scheme, equals('bearer'));
+      expect(header.parameters, equals({}));
+    });
+
+    test("lower-cases the scheme", () {
+      var header = new AuthenticateHeader.parse('BeaRer');
+      expect(header.scheme, equals('bearer'));
+      expect(header.parameters, equals({}));
+    });
+
+    test("parses a scheme with trailing whitespace", () {
+      var header = new AuthenticateHeader.parse('bearer   ');
+      expect(header.scheme, equals('bearer'));
+      expect(header.parameters, equals({}));
+    });
+
+    test("parses a scheme with one param", () {
+      var header = new AuthenticateHeader.parse('bearer  foo="bar"');
+      expect(header.scheme, equals('bearer'));
+      expect(header.parameters, equals({'foo': 'bar'}));
+    });
+
+    test("parses a scheme with several params", () {
+      var header = new AuthenticateHeader.parse(
+          'bearer foo="bar", bar="baz"  ,baz="qux"');
+      expect(header.scheme, equals('bearer'));
+      expect(header.parameters, equals({
+        'foo': 'bar',
+        'bar': 'baz',
+        'baz': 'qux'
+      }));
+    });
+
+    test("lower-cases parameter names but not values", () {
+      var header = new AuthenticateHeader.parse('bearer FoO="bAr"');
+      expect(header.scheme, equals('bearer'));
+      expect(header.parameters, equals({'foo': 'bAr'}));
+    });
+
+    test("allows empty values", () {
+      var header = new AuthenticateHeader.parse('bearer foo=""');
+      expect(header.scheme, equals('bearer'));
+      expect(header.parameters, equals({'foo': ''}));
+    });
+
+    test("won't parse an empty string", () {
+      expect(() => new AuthenticateHeader.parse(''),
+          throwsFormatException);
+    });
+
+    test("won't parse a token without a value", () {
+      expect(() => new AuthenticateHeader.parse('bearer foo'),
+          throwsFormatException);
+
+      expect(() => new AuthenticateHeader.parse('bearer foo='),
+          throwsFormatException);
+    });
+
+    test("won't parse a token without a value", () {
+      expect(() => new AuthenticateHeader.parse('bearer foo'),
+          throwsFormatException);
+
+      expect(() => new AuthenticateHeader.parse('bearer foo='),
+          throwsFormatException);
+    });
+
+    test("won't parse a trailing comma", () {
+      expect(() => new AuthenticateHeader.parse('bearer foo="bar",'),
+          throwsFormatException);
+    });
+
+    test("won't parse a multiple params without a comma", () {
+      expect(() => new AuthenticateHeader.parse('bearer foo="bar" bar="baz"'),
+          throwsFormatException);
+    });
+  });
+}