[AiS] Provide Answers queries with a session token.

chrome/browser/search_engines/template_url_unittest.cc

 // Copyright (c) 2012 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 "base/base_paths.h"
 #include "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 1325 matching lines @@
   std::string result = url.url_ref().ReplaceSearchTerms(search_terms_args);
   EXPECT_EQ("http://bar/search?q=foo&xssi=t", result);
 
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kEnableAnswersInSuggest);
   TemplateURL url2(NULL, data);
   result = url2.url_ref().ReplaceSearchTerms(search_terms_args);
   EXPECT_EQ("http://bar/search?q=foo&gs_rn=42&xssi=t", result);
 }
 #endif
+
+TEST_F(TemplateURLTest, SessionToken) {
+  TemplateURLData data;
+  UIThreadSearchTermsData::SetGoogleBaseURL("http://bar/");
+  data.SetURL("http://bar/search?q={searchTerms}&{google:sessionToken}xssi=t");
+
+  TemplateURL url(NULL, data);
+  TemplateURLRef::SearchTermsArgs search_terms_args(ASCIIToUTF16("foo"));
+  search_terms_args.session_token = "SESSIONTOKENGOESHERE";
+  std::string result = url.url_ref().ReplaceSearchTerms(search_terms_args);
+  EXPECT_EQ("http://bar/search?q=foo&psi=SESSIONTOKENGOESHERE&xssi=t", result);
+
+  TemplateURL url2(NULL, data);
+  search_terms_args.session_token = "";
+  result = url.url_ref().ReplaceSearchTerms(search_terms_args);
+  EXPECT_EQ("http://bar/search?q=foo&xssi=t", result);
+}