Don't test links on Windows, as we can't create relative links, in http_server.

pkg/http_server/test/virtual_directory_test.dart

 // Copyright (c) 2013, 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:io';
 
 import "package:unittest/unittest.dart";
 import "package:http_server/http_server.dart";
 
 
@@ skipping 117 matching lines @@
                 server.close();
                 file.deleteSync();
                 dir2.deleteSync();
                 dir.deleteSync();
               });
         }), completion(equals(HttpStatus.NOT_FOUND)));
       });
     });
   });
 
   group('links', () {

[Søren Gjesse, 2013/06/24 09:49:57]

group is missing a predicate argument.

-    group('follow-links', () {
-      test('dir-link', () {
-        expect(HttpServer.bind('localhost', 0).then((server) {
-          var dir = new Directory('').createTempSync();
-          var dir2 = new Directory('${dir.path}/dir2')..createSync();
-          var link = new Link('${dir.path}/dir3')..createSync('dir2');
-          var file = new File('${dir2.path}/file')..createSync();
-          var virDir = new VirtualDirectory(dir.path);
-          virDir.followLinks = true;
-
-          virDir.serve(server);
-
-          return new HttpClient().get('localhost', server.port, '/dir3/file')
-              .then((request) => request.close())
-              .then((response) => response.drain().then(
-                  (_) => response.statusCode))
-              .whenComplete(() {
-                server.close();
-                dir.deleteSync(recursive: true);
-              });
-        }), completion(equals(HttpStatus.OK)));
-      });
-
-      test('root-link', () {
-        expect(HttpServer.bind('localhost', 0).then((server) {
-          var dir = new Directory('').createTempSync();
-          var link = new Link('${dir.path}/dir3')..createSync('.');
-          var file = new File('${dir.path}/file')..createSync();
-          var virDir = new VirtualDirectory(dir.path);
-          virDir.followLinks = true;
-
-          virDir.serve(server);
-
-          return new HttpClient().get('localhost', server.port, '/dir3/file')
-              .then((request) => request.close())
-              .then((response) => response.drain().then(
-                  (_) => response.statusCode))
-              .whenComplete(() {
-                server.close();
-                dir.deleteSync(recursive: true);
-              });
-        }), completion(equals(HttpStatus.OK)));
-      });
-
-      group('bad-links', () {
-        test('absolute-link', () {
+    if (!Platform.isWindows) {
+      group('follow-links', () {
+        test('dir-link', () {
           expect(HttpServer.bind('localhost', 0).then((server) {
             var dir = new Directory('').createTempSync();
-            var file = new File('${dir.path}/file')..createSync();
-            var link = new Link('${dir.path}/dir3')
-                ..createSync('${dir.path}/file');
+            var dir2 = new Directory('${dir.path}/dir2')..createSync();
+            var link = new Link('${dir.path}/dir3')..createSync('dir2');
+            var file = new File('${dir2.path}/file')..createSync();
             var virDir = new VirtualDirectory(dir.path);
             virDir.followLinks = true;
 
             virDir.serve(server);
 
             return new HttpClient().get('localhost', server.port, '/dir3/file')
                 .then((request) => request.close())
                 .then((response) => response.drain().then(
                     (_) => response.statusCode))
                 .whenComplete(() {
                   server.close();
                   dir.deleteSync(recursive: true);
                 });
-          }), completion(equals(HttpStatus.NOT_FOUND)));
+          }), completion(equals(HttpStatus.OK)));
         });
 
-        test('relative-parent-link', () {
+        test('root-link', () {
           expect(HttpServer.bind('localhost', 0).then((server) {
             var dir = new Directory('').createTempSync();
-            var name = new Path(dir.path).filename;
+            var link = new Link('${dir.path}/dir3')..createSync('.');
             var file = new File('${dir.path}/file')..createSync();
-            var link = new Link('${dir.path}/dir3')
-                ..createSync('../$name/file');
             var virDir = new VirtualDirectory(dir.path);
             virDir.followLinks = true;
 
             virDir.serve(server);
 
             return new HttpClient().get('localhost', server.port, '/dir3/file')
                 .then((request) => request.close())
                 .then((response) => response.drain().then(
                     (_) => response.statusCode))
                 .whenComplete(() {
                   server.close();
                   dir.deleteSync(recursive: true);
                 });
+          }), completion(equals(HttpStatus.OK)));
+        });
+
+        group('bad-links', () {
+          test('absolute-link', () {
+            expect(HttpServer.bind('localhost', 0).then((server) {
+              var dir = new Directory('').createTempSync();
+              var file = new File('${dir.path}/file')..createSync();
+              var link = new Link('${dir.path}/dir3')
+                  ..createSync('${dir.path}/file');
+              var virDir = new VirtualDirectory(dir.path);
+              virDir.followLinks = true;
+
+              virDir.serve(server);
+
+              return new HttpClient().get('localhost',
+                                          server.port,
+                                          '/dir3/file')
+                  .then((request) => request.close())
+                  .then((response) => response.drain().then(
+                      (_) => response.statusCode))
+                  .whenComplete(() {
+                    server.close();
+                    dir.deleteSync(recursive: true);
+                  });
+            }), completion(equals(HttpStatus.NOT_FOUND)));
+          });
+
+          test('relative-parent-link', () {
+            expect(HttpServer.bind('localhost', 0).then((server) {
+              var dir = new Directory('').createTempSync();
+              var name = new Path(dir.path).filename;
+              var file = new File('${dir.path}/file')..createSync();
+              var link = new Link('${dir.path}/dir3')
+                  ..createSync('../$name/file');
+              var virDir = new VirtualDirectory(dir.path);
+              virDir.followLinks = true;
+
+              virDir.serve(server);
+
+              return new HttpClient().get('localhost',
+                                          server.port,
+                                          '/dir3/file')
+                  .then((request) => request.close())
+                  .then((response) => response.drain().then(
+                      (_) => response.statusCode))
+                  .whenComplete(() {
+                    server.close();
+                    dir.deleteSync(recursive: true);
+                  });
+            }), completion(equals(HttpStatus.NOT_FOUND)));
+          });
+        });
+      });
+
+      group('not-follow-links', () {
+        test('dir-link', () {
+          expect(HttpServer.bind('localhost', 0).then((server) {
+            var dir = new Directory('').createTempSync();
+            var dir2 = new Directory('${dir.path}/dir2')..createSync();
+            var link = new Link('${dir.path}/dir3')..createSync('dir2');
+            var file = new File('${dir2.path}/file')..createSync();
+            var virDir = new VirtualDirectory(dir.path);
+            virDir.followLinks = false;
+
+            virDir.serve(server);
+
+            return new HttpClient().get('localhost', server.port, '/dir3/file')
+                .then((request) => request.close())
+                .then((response) => response.drain().then(
+                    (_) => response.statusCode))
+                .whenComplete(() {
+                  server.close();
+                  dir.deleteSync(recursive: true);
+                });
           }), completion(equals(HttpStatus.NOT_FOUND)));
         });
       });
-    });
-
-    group('not-follow-links', () {
-      test('dir-link', () {
-        expect(HttpServer.bind('localhost', 0).then((server) {
-          var dir = new Directory('').createTempSync();
-          var dir2 = new Directory('${dir.path}/dir2')..createSync();
-          var link = new Link('${dir.path}/dir3')..createSync('dir2');
-          var file = new File('${dir2.path}/file')..createSync();
-          var virDir = new VirtualDirectory(dir.path);
-          virDir.followLinks = false;
-
-          virDir.serve(server);
-
-          return new HttpClient().get('localhost', server.port, '/dir3/file')
-              .then((request) => request.close())
-              .then((response) => response.drain().then(
-                  (_) => response.statusCode))
-              .whenComplete(() {
-                server.close();
-                dir.deleteSync(recursive: true);
-              });
-        }), completion(equals(HttpStatus.NOT_FOUND)));
-      });
-    });
+    }
   });
 }