add test for task_runner

spec/spec_helper.rb

@@ -4,6 +4,7 @@
 $LOAD_PATH.unshift(File.dirname(__FILE__) + '/../lib')
 
 ENV['RACK_ENV'] = 'test'
+ENV['JOB_DIR'] = 'spec/tmp'
 
 # NOTE: DATABASE_URL in .env must be commented out
 require 'fluentd_server'

spec/task_runner_spec.rb

@@ -0,0 +1,27 @@
+require_relative 'spec_helper'
+require 'fluentd_server/task_runner'
+require 'fluentd_server/model'
+
+describe 'TaskRunner' do
+  let(:task) { Task.create }
+  before { task.stub(:delay).and_return { task } }
+  after { Task.delete_all }
+
+  context '.serf_path' do
+    it { expect(File.executable?(Task.serf_path)).to be_true }
+  end
+
+  # ToDo: Test whether the serf command is executed correctly
+  context '#restart' do
+    it { expect { task.restart }.not_to raise_error }
+  end
+
+  context '#status' do
+    it { expect { task.status }.not_to raise_error }
+  end
+
+  context '#configrest' do
+    it { expect { task.configtest }.not_to raise_error }
+  end
+end
+