AU: Send a previous version event after reboot following an update.

omaha_request_action_unittest.cc

 // Copyright (c) 2010 The Chromium OS 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 <string>
 #include <vector>
 
 #include <glib.h>
 
 #include "base/string_util.h"
@@ skipping 503 matching lines @@
                       -1,
                       kActionCodeSuccess,
                       &response,
                       NULL));
 
   EXPECT_EQ(response.size, 123123123123123ll);
 }
 
 TEST(OmahaRequestActionTest, FormatUpdateCheckOutputTest) {
   vector<char> post_data;
-  ASSERT_FALSE(TestUpdateCheck(NULL,  // prefs
+  NiceMock<PrefsMock> prefs;
+  EXPECT_CALL(prefs, GetString(kPrefsPreviousVersion, _))
+      .WillOnce(DoAll(SetArgumentPointee<1>(string("")), Return(true)));
+  EXPECT_CALL(prefs, SetString(kPrefsPreviousVersion, _)).Times(0);
+  ASSERT_FALSE(TestUpdateCheck(&prefs,
                                kDefaultTestParams,
                                "invalid xml>",
                                -1,
                                kActionCodeOmahaRequestXMLParseError,
                                NULL,  // response
                                &post_data));
   // convert post_data to string
   string post_str(&post_data[0], post_data.size());
   EXPECT_NE(post_str.find("        <o:ping a=\"-1\" r=\"-1\"></o:ping>\n"
                           "        <o:updatecheck></o:updatecheck>\n"),
             string::npos);
   EXPECT_NE(post_str.find("hardware_class=\"OEM MODEL 09235 7471\""),
             string::npos);
   EXPECT_EQ(post_str.find("o:event"), string::npos);
 }
 
+TEST(OmahaRequestActionTest, FormatUpdateCheckPrevVersionOutputTest) {
+  vector<char> post_data;
+  NiceMock<PrefsMock> prefs;
+  EXPECT_CALL(prefs, GetString(kPrefsPreviousVersion, _))
+      .WillOnce(DoAll(SetArgumentPointee<1>(string("1.2.3.4")), Return(true)));
+  EXPECT_CALL(prefs, SetString(kPrefsPreviousVersion, ""))
+      .WillOnce(Return(true));
+  ASSERT_FALSE(TestUpdateCheck(&prefs,
+                               kDefaultTestParams,
+                               "invalid xml>",
+                               -1,
+                               kActionCodeOmahaRequestXMLParseError,
+                               NULL,  // response
+                               &post_data));
+  // convert post_data to string
+  string post_str(&post_data[0], post_data.size());
+  EXPECT_NE(post_str.find("        <o:ping a=\"-1\" r=\"-1\"></o:ping>\n"
+                          "        <o:updatecheck></o:updatecheck>\n"),
+            string::npos);
+  EXPECT_NE(post_str.find("hardware_class=\"OEM MODEL 09235 7471\""),
+            string::npos);
+  string prev_version_event = StringPrintf(
+      "        <o:event eventtype=\"%d\" eventresult=\"%d\" "
+      "previousversion=\"1.2.3.4\"></o:event>\n",
+      OmahaEvent::kTypeUpdateComplete,
+      OmahaEvent::kResultSuccessReboot);
+  EXPECT_NE(post_str.find(prev_version_event), string::npos);
+}
+
 TEST(OmahaRequestActionTest, FormatSuccessEventOutputTest) {
   vector<char> post_data;
   TestEvent(kDefaultTestParams,
             new OmahaEvent(OmahaEvent::kTypeUpdateDownloadStarted),
             "invalid xml>",
             &post_data);
   // convert post_data to string
   string post_str(&post_data[0], post_data.size());
   string expected_event = StringPrintf(
       "        <o:event eventtype=\"%d\" eventresult=\"%d\"></o:event>\n",
@@ skipping 339 matching lines @@
                       "",
                       1500,
                       static_cast<ActionExitCode>(
                           kActionCodeOmahaRequestHTTPResponseBase + 999),
                       &response,
                       NULL));
   EXPECT_FALSE(response.update_exists);
 }
 
 }  // namespace chromeos_update_engine