Add a unit test for viewsource reverse

content/browser/browser_url_handler_impl_unittest.cc

 // Copyright (c) 2011 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.
 
 #include "content/browser/browser_url_handler_impl.h"
 #include "content/public/test/test_browser_context.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 namespace content {
@@ skipping 61 matching lines @@
                                             &browser_context);
   ASSERT_FALSE(reversed);
   ASSERT_EQ(original_url, url);
 
   handler.AddHandlerPair(BrowserURLHandlerImpl::null_handler(), BarRewriter);
   reversed = handler.ReverseURLRewrite(&url, original_url, &browser_context);
   ASSERT_TRUE(reversed);
   ASSERT_EQ("foo://foo", url.spec());
 }
 
+// Verify that the reverse handler for view-source does not duplicate query
+// parameters.
+TEST_F(BrowserURLHandlerImplTest, ViewSourceReverse) {
+  TestBrowserContext browser_context;
+  BrowserURLHandlerImpl handler;
+
+  GURL url("http://foo/?a=1");
+  GURL original_url("view-source:http://some_url");
+  bool reversed = handler.ReverseURLRewrite(&url,
+                                            original_url,
+                                            &browser_context);
+  ASSERT_TRUE(reversed);
+  ASSERT_EQ("view-source:http://foo/?a=1", url.spec());
+}
+
 }  // namespace content