Migrate test block 30 + corelib portion of block 31 to Dart 2.0.

tests/corelib/uri_parse_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.
-
-import "package:expect/expect.dart";
-
-void testUriCombi() {
-  var schemes = ["", "file", "ws", "ftp"];
-  var fragments = ["", "#", "#f", "#fragment", "#l:?/"];
-  var queries = ["", "?", "?q", "?query", "?q:/"];
-  var paths = ["/", "/x", "/x/y", "/x/y/", "/x:y", "x", "x/y", "x/y/"];
-  var userInfos = ["", "x", "xxx", "x:4", "xxx:444", "x:4:x"];
-  var hosts = ["", "h", "hhh", "h:4", "hhh:444", "[::1.2.3.4]"];
-
-  void check(uriString, scheme, fragment, query, path, user, host) {
-    for (var uri in [
-      Uri.parse(uriString),
-      Uri.parse(">\u{10000}>$uriString<\u{10000}<", 4, uriString.length + 4),
-      Uri.parse(
-          "http://example.com/$uriString#?:/[]\"", 19, uriString.length + 19),
-      Uri.parse(uriString * 3, uriString.length, uriString.length * 2)
-    ]) {
-      String name = "$uriString -> $uri";
-      Expect.equals(scheme, uri.scheme, name);
-      var uriFragment = uri.fragment;
-      if (fragment.startsWith('#')) uriFragment = "#$uriFragment";
-      Expect.equals(fragment, uriFragment, name);
-      var uriQuery = uri.query;
-      if (query.startsWith('?')) uriQuery = "?$uriQuery";
-      Expect.equals(query, uriQuery, name);
-      Expect.equals(path, uri.path, name);
-      Expect.equals(user, uri.userInfo, name);
-      var uriHost = uri.host;
-      if (host.startsWith("[")) uriHost = "[$uriHost]";
-      if (uri.port != 0) uriHost += ":${uri.port}";
-      Expect.equals(host, uriHost, name);
-    }
-  }
-
-  for (var scheme in schemes) {
-    for (var fragment in fragments) {
-      for (var query in queries) {
-        for (var path in paths) {
-          // File scheme URIs always get a leading slash.
-          if (scheme == "file" && !path.startsWith('/')) continue;
-          for (var user in userInfos) {
-            for (var host in hosts) {
-              var auth = host;
-              var s = scheme;
-              if (user.isNotEmpty) auth = "$user@$auth";
-              if (auth.isNotEmpty) auth = "//$auth";
-              if (auth.isNotEmpty && !path.startsWith('/')) continue;
-              check(
-                  "$scheme${scheme.isEmpty ? "" : ":"}"
-                  "$auth$path$query$fragment",
-                  scheme,
-                  fragment,
-                  query,
-                  path,
-                  user,
-                  host);
-            }
-          }
-        }
-      }
-    }
-  }
-}
-
-void main() {
-  testUriCombi();
-}