Add reboot output to guest capability

plugins/guests/windows/cap/reboot.rb

@@ -21,6 +21,8 @@ module VagrantPlugins
             @logger.debug("A reboot is already in progress")
           end
 
+          machine.ui.info(I18n.t("vagrant.guests.capabilities.rebooting"))
+
           @logger.debug("Waiting for machine to finish rebooting")
 
           wait_remaining = MAX_REBOOT_RETRY_DURATION

templates/locales/en.yml

@@ -1922,6 +1922,14 @@ en:
           path of the shared folder must be located on a file system with
           DrvFs type. Host path: %{path}
 
+#-------------------------------------------------------------------------------
+# Translations for guests
+#-------------------------------------------------------------------------------
+    guests:
+      capabilities:
+        rebooting: |-
+          Waiting for machine to reboot...
+
 #-------------------------------------------------------------------------------
 # Translations for commands. e.g. `vagrant x`
 #-------------------------------------------------------------------------------

test/unit/plugins/guests/windows/cap/reboot_test.rb

@@ -8,9 +8,10 @@ describe "VagrantPlugins::GuestWindows::Cap::Reboot" do
   end
   let(:vm) { double("vm") }
   let(:config) { double("config") }
-  let(:machine) { double("machine") }
+  let(:machine) { double("machine", ui: ui) }
   let(:guest) { double("guest") }
   let(:communicator) { double("communicator") }
+  let(:ui) { double("ui") }
 
   before do
     allow(machine).to receive(:communicate).and_return(communicator)
@@ -18,6 +19,7 @@ describe "VagrantPlugins::GuestWindows::Cap::Reboot" do
     allow(machine.guest).to receive(:ready?).and_return(true)
     allow(machine).to receive(:config).and_return(config)
     allow(config).to receive(:vm).and_return(vm)
+    allow(ui).to receive(:info)
   end
 
   describe ".reboot" do
@@ -34,6 +36,20 @@ describe "VagrantPlugins::GuestWindows::Cap::Reboot" do
 
       described_class.reboot(machine)
     end
+
+    context "user output" do
+      before do
+        allow(communicator).to receive(:execute)
+        allow(described_class).to receive(:wait_for_reboot)
+      end
+
+      after { described_class.reboot(machine) }
+
+      it "sends message to user that guest is rebooting" do
+        expect(communicator).to receive(:test).and_return(true)
+        expect(ui).to receive(:info)
+      end
+    end
   end
 
   describe "winrm communicator" do