Implement basic Runner

lib/uh/wm.rb

@@ -3,6 +3,7 @@ require 'uh'
 require 'uh/wm/cli'
 require 'uh/wm/env'
 require 'uh/wm/manager'
+require 'uh/wm/runner'
 
 module Uh
   module WM

lib/uh/wm/runner.rb

@@ -0,0 +1,24 @@
+module Uh
+  module WM
+    class Runner
+      class << self
+        def run env
+          runner = new env
+          runner.connect_manager
+        end
+      end
+
+      attr_reader :env, :manager
+
+      def initialize env
+        @env      = env
+        @manager  = Manager.new
+      end
+
+      def connect_manager
+        @manager.connect
+        @env.log "Connected to X server"
+      end
+    end
+  end
+end

spec/uh/wm/runner_spec.rb

@@ -0,0 +1,46 @@
+module Uh
+  module WM
+    RSpec.describe Runner do
+      let(:env)         { Env.new(StringIO.new) }
+      subject(:runner)  { described_class.new env }
+
+      describe '.run' do
+        subject(:run) { described_class.run env }
+
+        it 'builds a new Runner with given env' do
+          expect(described_class).to receive(:new).with(env).and_call_original
+          run
+        end
+
+        it 'connects the manager' do
+          runner
+          allow(described_class).to receive(:new) { runner }
+          expect(runner).to receive(:connect_manager)
+          run
+        end
+      end
+
+      describe '#initialize' do
+        it 'assigns the env' do
+          expect(runner.env).to be env
+        end
+
+        it 'assigns a new Manager' do
+          expect(runner.manager).to be_a Manager
+        end
+      end
+
+      describe '#connect_manager' do
+        it 'connects the manager' do
+          expect(runner.manager).to receive :connect
+          runner.connect_manager
+        end
+
+        it 'logs a message when connected' do
+          expect(env).to receive(:log).with /connected/i
+          runner.connect_manager
+        end
+      end
+    end
+  end
+end