commit 59e253e555072d11f3646fc1286459cbc6aa5419
author Alex Vakulenko <avakulenko@chromium.org> Mon Feb 24 10:40:21 2014 -0800
committer chrome-internal-fetch <chrome-internal-fetch@google.com> Tue Feb 25 22:12:31 2014 +0000
tree 720e3cde0cb4c1c235f04c776db6ce730ad525ff
parent 55f39b7043fae6b7c27188d0cd797946098b42ef

update_engine: added CanRollback dbus method

Added a method to the update engine to check if a rollback
partition is available and can be booted from.
update_engine_client is also updated to call the function
when --can_rollback paramater is specified

BUG=chromium:343301
TEST=Ran "update_engine_client --can_rollback" and unit tests

Change-Id: If3fcb29a0067069a22812f60e9b67c6fdbbd18bd
Reviewed-on: https://chromium-review.googlesource.com/187157
Tested-by: Alex Vakulenko <avakulenko@chromium.org>
Reviewed-by: Don Garrett <dgarrett@chromium.org>
Commit-Queue: Alex Vakulenko <avakulenko@chromium.org>

mock_hardware.h

diff --git a/mock_hardware.h b/mock_hardware.h
index 6a27488..8257b91 100644
--- a/mock_hardware.h
+++ b/mock_hardware.h
@@ -22,6 +22,9 @@
     ON_CALL(*this, BootDevice())
       .WillByDefault(testing::Invoke(&fake_,
             &FakeHardware::BootDevice));
+    ON_CALL(*this, GetKernelDevices())
+      .WillByDefault(testing::Invoke(&fake_,
+            &FakeHardware::GetKernelDevices));
     ON_CALL(*this, IsKernelBootable(testing::_, testing::_))
       .WillByDefault(testing::Invoke(&fake_,
             &FakeHardware::IsKernelBootable));
@@ -50,6 +53,7 @@
   // Hardware overrides.
   MOCK_METHOD0(BootKernelDevice, const std::string());
   MOCK_METHOD0(BootDevice, const std::string());
+  MOCK_METHOD0(GetKernelDevices, std::vector<std::string>());
   MOCK_METHOD2(IsKernelBootable,
                bool(const std::string& kernel_device, bool* bootable));
   MOCK_METHOD1(MarkKernelUnbootable,