Do "path normalization" when creating a URI.

tests/corelib/uri_normalize_test.dart

Index: tests/corelib/uri_normalize_test.dart
diff --git a/tests/corelib/uri_normalize_test.dart b/tests/corelib/uri_normalize_test.dart
index 91bbe10f1c1bc8b047012531a1ec4288d0240103..5c2f8140c0800bbc8459aa3f8843c8e5edd3d2f6 100644
--- a/tests/corelib/uri_normalize_test.dart
+++ b/tests/corelib/uri_normalize_test.dart
@@ -5,10 +5,12 @@
 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"
@@ -32,9 +34,42 @@ testNormalizePath() {
       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() {