issue-7983 - Helper now throws WinRMNotReady exception is host ip is reported as an empty string

plugins/communicators/winrm/helper.rb

@@ -33,7 +33,7 @@ module VagrantPlugins
         return addr if addr
 
         ssh_info = machine.ssh_info
-        raise Errors::WinRMNotReady if !ssh_info
+        raise Errors::WinRMNotReady if !ssh_info || ssh_info[:host].empty?
         return ssh_info[:host]
       end
 

test/unit/plugins/communicators/winrm/helper_test.rb

@@ -36,6 +36,12 @@ describe VagrantPlugins::CommunicatorWinRM::Helper do
       expect { subject.winrm_address(machine) }.
         to raise_error(VagrantPlugins::CommunicatorWinRM::Errors::WinRMNotReady)
     end
+
+    it "raise an exception if it detects an empty host ip" do
+      machine.stub(ssh_info: { host: "" })
+      expect { subject.winrm_address(machine) }.
+        to raise_error(VagrantPlugins::CommunicatorWinRM::Errors::WinRMNotReady)
+    end
   end
 
   describe ".winrm_info" do