daemon_spec.rb in foreground-0.0.3

- old
+ new
@@ -1,57 +1,115 @@
\ No newline at end of file
+require 'spec_helper'
+
+module Foreground
+  describe Daemon do
+    before do
+      Process.stub(:kill)
+      @cmd = ['some_daemon', '--with', 'arguments']
+      @pid_file = 'some_daemon.pid'
+      @pid = 42
+      @args = [@cmd, @pid_file]
+      @daemon = Daemon.new(@cmd, @pid_file)
+      @daemon.stub(:watch) # ...or we'll wait forever.
+      @daemon.stub(:system) # ...so that we don't run any stupid commands in our tests.
+    end
+
+    describe '.run' do
+      it 'should run and register a new instance' do
+        daemon = mock('daemon')
+        daemon.should_receive(:run)
+        Daemon.should_receive(:new).with(*@args).and_return(daemon)
+        Daemon.daemon.should be_nil
+        Daemon.run(*@args)
+        Daemon.daemon.should be(daemon)
+      end
+    end
+
+    describe '.kill' do
+      it 'should forward signals to the daemon' do
+        Daemon.daemon = mock('daemon')
+        Daemon.daemon.should_receive(:kill).with(:FOO)
+        Daemon.kill(:FOO)
+      end
+    end
+
+    describe '#run' do
+      it 'should run and watch the daemon' do
+        @daemon.should_receive(:system).with(*@cmd).ordered
+        @daemon.should_receive(:watch).ordered
+        @daemon.run
+      end
+    end
+
+    describe '#kill' do
+      it 'should send the daemon a SIGTERM' do
+        @daemon.stub(:pid).and_return(42)
+        Process.should_receive(:kill).with(:TERM, 42)
+        @daemon.kill
+      end
+    end
+
+    describe '#pid' do
+      it 'should return the daemons PID by PID file' do
+        File.should_receive(:read).with(@pid_file).and_return("#{@pid}\n")
+        @daemon.pid.should eql(@pid)
+      end
+    end
+  end
+end