providers/hyperv: more checks on machine import

plugins/providers/hyperv/action/import.rb

@@ -6,31 +6,48 @@ module VagrantPlugins
       class Import
         def initialize(app, env)
           @app    = app
-          @logger = Log4r::Logger.new("vagrant::hyperv::connection")
+          @logger = Log4r::Logger.new("vagrant::hyperv::import")
         end
 
         def call(env)
-          box_directory = env[:machine].box.directory.to_s
-          path = Pathname.new(box_directory.to_s + '/Virtual Machines')
-          config_path = ""
-          path.each_child do |f|
-            config_path = f.to_s if f.extname.downcase == ".xml"
+          vm_dir = env[:machine].box.directory.join("Virtual Machines")
+          hd_dir = env[:machine].box.directory.join("Virtual Hard Disks")
+
+          if !vm_dir.directory? || !hd_dir.directory?
+            raise Errors::BoxInvalid
           end
 
-          path = Pathname.new(box_directory.to_s + '/Virtual Hard Disks')
-          vhdx_path = ""
-          path.each_child do |f|
-            vhdx_path = f.to_s if f.extname.downcase == ".vhdx"
+          config_path = nil
+          vm_dir.each_child do |f|
+            if f.extname.downcase == ".xml"
+              config_path = f
+              break
+            end
           end
 
+          vhdx_path = nil
+          hd_dir.each_child do |f|
+            if f.extname.downcase == ".vhdx"
+              vhdx_path = f
+              break
+            end
+          end
+
+          if !config_path || !vhdx_path
+            raise Errors::BoxInvalid
+          end
+
+          # We have to normalize the paths to be Windows paths since
+          # we're executing PowerShell.
           options = {
-            vm_xml_config:  config_path.gsub("/", "\\"),
-            vhdx_path: vhdx_path.gsub("/", "\\")
+            vm_xml_config:  config_path.to_s.gsub("/", "\\"),
+            vhdx_path:      vhdx_path.to_s.gsub("/", "\\")
           }
 
           env[:ui].info "Importing a Hyper-V instance"
-          server = env[:machine].provider.driver.execute('import_vm.ps1', options)
-          env[:ui].info "Successfully imported a VM with name   #{server['name']}"
+          server = env[:machine].provider.driver.execute(
+            'import_vm.ps1', options)
+          env[:ui].info "Successfully imported a VM with name: #{server['name']}"
           env[:machine].id = server["id"]
           @app.call(env)
         end

plugins/providers/hyperv/errors.rb

@@ -10,6 +10,10 @@ module VagrantPlugins
         error_key(:admin_required)
       end
 
+      class BoxInvalid < HyperVError
+        error_key(:box_invalid)
+      end
+
       class PowerShellError < HyperVError
         error_key(:powershell_error)
       end

templates/locales/providers_hyperv.yml

@@ -7,6 +7,19 @@ en:
         Hyper-V requires administrative privileges for management
         commands. Please restart your console with administrative
         privileges and try again.
+      box_invalid: |-
+        The box you're using with the Hyper-V provider ('%{name}')
+        is invalid. A Hyper-V box should contain both a
+        "Virtual Machines" and a "Virtual Hard Disks" folder that are
+        created as part of exporting a Hyper-V machine.
+
+        Within these directories, Vagrant expects to find the
+        virtual machine configuration as well as the root hard disk.
+
+        The box you're attempting to use is missing one or both of
+        these directories or does not contain the files expected. Verify
+        that you added the correct box. If this problem persists,
+        please contact the creator of the box for assistance.
       powershell_error: |-
         An error occurred while executing a PowerShell script. This error
         is shown below. Please read the error message and see if this is

test/unit/plugins/providers/hyperv/provider_test.rb

@@ -39,4 +39,10 @@ describe VagrantPlugins::HyperV::Provider do
         to raise_error(VagrantPlugins::HyperV::Errors::PowerShellRequired)
     end
   end
+
+  describe "#driver" do
+    it "is initialized" do
+      expect(subject.driver).to be_kind_of(VagrantPlugins::HyperV::Driver)
+    end
+  end
 end