AU: pass whether or not we can tolerate a delta to the server

omaha_request_params_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 <stdio.h>
 #include <string>
 #include <gtest/gtest.h>
 #include "update_engine/install_plan.h"
 #include "update_engine/omaha_request_params.h"
 #include "update_engine/test_utils.h"
@@ skipping 80 matching lines @@
     EXPECT_TRUE(DoTest(&out));
     EXPECT_TRUE(IsValidGuid(out.machine_id)) << "id: " << out.machine_id;
     // for now we're just using the machine id here
     EXPECT_TRUE(IsValidGuid(out.user_id)) << "id: " << out.user_id;
     EXPECT_EQ("Chrome OS", out.os_platform);
     EXPECT_EQ(string("0.2.2.3_") + GetMachineType(), out.os_sp);
     EXPECT_EQ("arm-generic", out.os_board);
     EXPECT_EQ("{87efface-864d-49a5-9bb3-4b050a7c227a}", out.app_id);
     EXPECT_EQ("0.2.2.3", out.app_version);
     EXPECT_EQ("en-US", out.app_lang);
+    EXPECT_TRUE(out.delta_okay);
     EXPECT_EQ("footrack", out.app_track);
   }
   EXPECT_EQ(0, System(string("rm -rf ") + kTestDir));
 }
 
 TEST_F(OmahaRequestDeviceParamsTest, MissingTrackTest) {
   ASSERT_EQ(0, System(string("mkdir -p ") + kTestDir + "/etc"));
   ASSERT_EQ(0, System(string("mkdir -p ") + kTestDir +
                       utils::kStatefulPartition + "/etc"));
   {
@@ skipping 58 matching lines @@
       kTestDir +
       utils::kStatefulPartition + "/etc/omaha_id",
       &machine_id));
   EXPECT_EQ(machine_id, out1.machine_id);
   OmahaRequestParams out2;
   EXPECT_TRUE(DoTest(&out2));
   EXPECT_EQ(machine_id, out2.machine_id);
   EXPECT_EQ(0, System(string("rm -rf ") + kTestDir));
 }
 
+TEST_F(OmahaRequestDeviceParamsTest, NoDeltasTest) {
+  ASSERT_EQ(0, System(string("mkdir -p ") + kTestDir + "/etc"));
+  ASSERT_EQ(0, System(string("mkdir -p ") + kTestDir +
+                      utils::kStatefulPartition + "/etc"));
+  ASSERT_TRUE(WriteFileString(
+      kTestDir + "/etc/lsb-release",
+      "CHROMEOS_RELEASE_FOO=CHROMEOS_RELEASE_VERSION=1.2.3.4\n"
+      "CHROMEOS_RELEASE_VERSION=0.2.2.3\n"
+      "CHROMEOS_RELEASE_TRXCK=footrack"));
+  ASSERT_TRUE(WriteFileString(kTestDir + "/.nodelta", ""));
+  OmahaRequestParams out;
+  EXPECT_TRUE(DoTest(&out));
+  EXPECT_FALSE(out.delta_okay);
+  EXPECT_EQ(0, System(string("rm -rf ") + kTestDir));
+}
+
 }  // namespace chromeos_update_engine