implement parser for new pagination algorithm

javatests/org/chromium/distiller/ParsedUrlTest.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.distiller;
 
 public class ParsedUrlTest extends JsTestCase {
 
     private static final String VALID_URL =
             "http://fooUser:fooPwd@www.foo.com/path0/path1/;pathParams?qA=B&qC=D";
@@ skipping 36 matching lines @@
         assertEquals("newFooPwd", url.getPassword());
         assertEquals("http://newFooUser:newFooPwd@www.foo.com/path0/path1/;pathParams?qA=B&qC=D",
                 url.toString());
         url.setUsername("");
         url.setPassword("");
         assertEquals("", url.getUsername());
         assertEquals("", url.getPassword());
         assertEquals("http://www.foo.com/path0/path1/;pathParams?qA=B&qC=D", url.toString());
     }
 
+    public void testSetHash() {
+        ParsedUrl url = ParsedUrl.create(VALID_URL + "#jumpToFoo");
+        assertTrue(url != null);
+        assertEquals("#jumpToFoo", url.getHash());
+        url.setHash("dontJumpToFoo");
+        assertEquals("#dontJumpToFoo", url.getHash());
+        assertEquals(VALID_URL + "#dontJumpToFoo", url.toString());
+        url.setHash("");
+        assertEquals("", url.getHash());
+        assertEquals(VALID_URL, url.toString());
+    }
+
     public void testReplaceQueryValue() {
         ParsedUrl url = ParsedUrl.create(VALID_URL);
         assertTrue(url != null);
         assertEquals("?qA=B&qC=D", url.getQuery());
         assertEquals("http://fooUser:fooPwd@www.foo.com/path0/path1/;pathParams?qA=E&qC=D",
                 url.replaceQueryValue("qA", "B", "E"));
         // Original query shouldn't change.
         assertEquals("?qA=B&qC=D", url.getQuery());
     }
 
 }