Do "path normalization" when creating a URI.

tests/corelib/uri_normalize_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 "package:expect/expect.dart";
 
 testNormalizePath() {
-  test(String expected, String path) {
-    var uri = new Uri(path: path);
-    Expect.equals(expected, uri.path);
+  test(String expected, String path, {String scheme, String host}) {
+    var uri = new Uri(scheme: scheme, host: host, path: path);
     Expect.equals(expected, uri.toString());
+    if (scheme == null && host == null) {
+      Expect.equals(expected, uri.path);
+    }
   }
 
   var unreserved = "-._~0123456789"
                    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
                    "abcdefghijklmnopqrstuvwxyz";
 
   test("A", "%41");
   test("AB", "%41%42");
   test("%40AB", "%40%41%42");
   test("a", "%61");
   test("ab", "%61%62");
   test("%60ab", "%60%61%62");
   test(unreserved, unreserved);
 
   var x = new StringBuffer();
   for (int i = 32; i < 128; i++) {
     if (unreserved.indexOf(new String.fromCharCode(i)) != -1) {
       x.writeCharCode(i);
     } else {
       x.write("%");
       x.write(i.toRadixString(16));
     }
   }
-  print(x.toString().toUpperCase());
   Expect.equals(x.toString().toUpperCase(),
                 new Uri(path: x.toString()).toString().toUpperCase());
+
+  // Normalized paths.
+
+  // Full absolute path normalization for absolute paths.
+  test("/a/b/c/", "/../a/./b/z/../c/d/..");
+  test("/a/b/c/", "/./a/b/c/");
+  test("/a/b/c/", "/./../a/b/c/");
+  test("/a/b/c/", "/./../a/b/c/.");
+  test("/a/b/c/", "/./../a/b/c/z/./..");
+  test("/", "/a/..");
+  // Full absolute path normalization for URIs with scheme.
+  test("s:a/b/c/", "../a/./b/z/../c/d/..", scheme: "s");
+  test("s:a/b/c/", "./a/b/c/", scheme: "s");
+  test("s:a/b/c/", "./../a/b/c/", scheme: "s");
+  test("s:a/b/c/", "./../a/b/c/.", scheme: "s");
+  test("s:a/b/c/", "./../a/b/c/z/./..", scheme: "s");
+  test("s:/", "/a/..", scheme: "s");
+  test("s:/", "a/..", scheme: "s");
+  // Full absolute path normalization for URIs with authority.
+  test("//h/a/b/c/", "../a/./b/z/../c/d/..", host: "h");
+  test("//h/a/b/c/", "./a/b/c/", host: "h");
+  test("//h/a/b/c/", "./../a/b/c/", host: "h");
+  test("//h/a/b/c/", "./../a/b/c/.", host: "h");
+  test("//h/a/b/c/", "./../a/b/c/z/./..", host: "h");
+  test("//h/", "/a/..", host: "h");
+  test("//h/", "a/..", host: "h");
+  // Partial relative normalization (allowing leading .. or ./ for current dir).
+  test("../a/b/c/", "../a/./b/z/../c/d/..");
+  test("a/b/c/", "./a/b/c/");
+  test("../a/b/c/", "./../a/b/c/");
+  test("../a/b/c/", "./../a/b/c/.");
+  test("../a/b/c/", "./../a/b/c/z/./..");
+  test("/", "/a/..");
+  test("./", "a/..");
 }
 
 main() {
   testNormalizePath();
 }