Ensure stdout is returned from #execute

lib/kitchen/terraform/transport/connection.rb

@@ -28,9 +28,12 @@ class Connection < ::Kitchen::Transport::Exec::Connection
         # #execute executes a Terraform CLI command on the local host.
         #
         # @param command [String] the Terraform command to be executed locally.
+        # @return [String] the standard output of the command.
         # @raise [Kitchen::TransportFailed] if the command does not exit successfully.
         def execute(command)
           super "#{client} #{command}"
+
+          stdout
         end
 
         # #run_command executes a command in a subshell on the local running system.
@@ -41,7 +44,7 @@ def execute(command)
         # @raise [Kitchen::ShellOut::ShellCommandFailed] if the command fails.
         # @raise [Kitchen::StandardError] for all other unexpected exceptions.
         def run_command(command, options = {})
-          super command, options.merge(
+          self.stdout = super command, options.merge(
             cwd: root_module_directory,
             environment: environment.merge("LC_ALL" => nil, "TF_IN_AUTOMATION" => "true"),
             timeout: command_timeout,
@@ -50,7 +53,7 @@ def run_command(command, options = {})
 
         private
 
-        attr_accessor :client, :command_timeout, :environment, :options, :root_module_directory
+        attr_accessor :client, :command_timeout, :environment, :options, :root_module_directory, :stdout
 
         # #init_options initializes incoming options for use by the object.
         #

spec/lib/kitchen/terraform/transport/connection_spec.rb

@@ -73,6 +73,10 @@
       instance_double ::Mixlib::ShellOut
     end
 
+    let :stdout do
+      instance_double ::String
+    end
+
     specify "should invoke the ShellOut superclass implementation with the client and options configured" do
       allow(subject).to receive(:run_from_file_command).with("#{client} #{command}").and_return "#{client} #{command}"
       allow(subject).to receive :close
@@ -88,13 +92,12 @@
           timeout: command_timeout,
         })
       ).and_return shell_out
+      allow(shell_out).to receive :run_command
+      allow(shell_out).to receive :execution_time
+      allow(shell_out).to receive :error!
+      allow(shell_out).to receive(:stdout).and_return stdout
 
-      expect(shell_out).to receive :run_command
-      expect(shell_out).to receive :execution_time
-      expect(shell_out).to receive :error!
-      expect(shell_out).to receive :stdout
-
-      subject.execute command
+      expect(subject.execute(command)).to be stdout
     end
   end
 end