guests/suse: Configure rsync in one command

plugins/guests/suse/cap/rsync.rb

@@ -7,9 +7,7 @@ module VagrantPlugins
         end
 
         def self.rsync_install(machine)
-          machine.communicate.tap do |comm|
-            comm.sudo("zypper -n install rsync")
-          end
+          machine.communicate.sudo("zypper -n install rsync")
         end
       end
     end

test/unit/plugins/guests/suse/cap/rsync_test.rb

@@ -0,0 +1,38 @@
+require_relative "../../../../base"
+
+describe "VagrantPlugins::GuestSUSE::Cap::RSync" do
+  let(:caps) do
+    VagrantPlugins::GuestSUSE::Plugin
+      .components
+      .guest_capabilities[:suse]
+  end
+
+  let(:machine) { double("machine") }
+  let(:comm) { VagrantTests::DummyCommunicator::Communicator.new(machine) }
+
+  before do
+    allow(machine).to receive(:communicate).and_return(comm)
+  end
+
+  after do
+    comm.verify_expectations!
+  end
+
+  describe ".rsync_install" do
+    let(:cap) { caps.get(:rsync_install) }
+
+    it "installs rsync" do
+      comm.expect_command("zypper -n install rsync")
+      cap.rsync_install(machine)
+    end
+  end
+
+  describe ".rsync_installed" do
+    let(:cap) { caps.get(:rsync_installed) }
+
+    it "checks if rsync is installed" do
+      comm.expect_command("test -f /usr/bin/rsync")
+      cap.rsync_installed(machine)
+    end
+  end
+end