require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/common', __FILE__)

ruby_version_is "1.9" do
  platform_is :windows do
    describe "Process.daemon" do
      it "returns false from #respond_to?" do
        Process.respond_to?(:daemon).should be_false
      end

      it "raises a NotImplementedError when called" do
        lambda { Process.daemon }.should raise_error(NotImplementedError)
      end
    end
  end

  platform_is_not :windows do
    describe :process_daemon_keep_stdio_open_false, :shared => true do
      it "redirects stdout to /dev/null" do
        @daemon.invoke("keep_stdio_open_false_stdout", @object).should be_nil
      end

      it "redirects stderr to /dev/null" do
        @daemon.invoke("keep_stdio_open_false_stderr", @object).should be_nil
      end

      it "redirects stdin to /dev/null" do
        @daemon.invoke("keep_stdio_open_false_stdin", @object).should == ""
      end

      it "does not close open files" do
        @daemon.invoke("keep_stdio_open_files", @object).should == "false"
      end
    end

    describe :process_daemon_keep_stdio_open_true, :shared => true do
      it "does not redirect stdout to /dev/null" do
        @daemon.invoke("keep_stdio_open_true_stdout", @object).should == "writing to stdout"
      end

      it "does not redirect stderr to /dev/null" do
        @daemon.invoke("keep_stdio_open_true_stderr", @object).should == "writing to stderr"
      end

      it "does not redirect stdin to /dev/null" do
        @daemon.invoke("keep_stdio_open_true_stdin", @object).should == "reading from stdin"
      end

      it "does not close open files" do
        @daemon.invoke("keep_stdio_open_files", @object).should == "false"
      end
    end

    describe "Process.daemon" do
      before :each do
        @invoke_dir = Dir.pwd
        @daemon = ProcessSpecs::Daemonizer.new
      end

      after :each do
        rm_r @daemon.input, @daemon.data, @daemon.signal
      end

      it "returns 0" do
        @daemon.invoke("return_value").should == "0"
      end

      it "has a different PID after daemonizing" do
        parent, daemon = @daemon.invoke("pid").split(":")
        parent.should_not == daemon
      end

      it "has a different process group after daemonizing" do
        parent, daemon = @daemon.invoke("process_group").split(":")
        parent.should_not == daemon
      end

      it "does not run existing at_exit handlers when daemonizing" do
        @daemon.invoke("daemonizing_at_exit").should == "not running at_exit"
      end

      it "runs at_exit handlers when the daemon exits" do
        @daemon.invoke("daemon_at_exit").should == "running at_exit"
      end

      it "changes directory to the root directory if the first argument is not given" do
        @daemon.invoke("stay_in_dir").should == "/"
      end

      it "changes directory to the root directory if the first argument is false" do
        @daemon.invoke("stay_in_dir", [false]).should == "/"
      end

      it "changes directory to the root directory if the first argument is nil" do
        @daemon.invoke("stay_in_dir", [nil]).should == "/"
      end

      it "does not change to the root directory if the first argument is true" do
        @daemon.invoke("stay_in_dir", [true]).should == @invoke_dir
      end

      it "does not change to the root directory if the first argument is non-false" do
        @daemon.invoke("stay_in_dir", [:yes]).should == @invoke_dir
      end

      describe "when the second argument is not given" do
        it_behaves_like :process_daemon_keep_stdio_open_false, nil, [false]
      end

      describe "when the second argument is false" do
        it_behaves_like :process_daemon_keep_stdio_open_false, nil, [false, false]
      end

      describe "when the second argument is nil" do
        it_behaves_like :process_daemon_keep_stdio_open_false, nil, [false, nil]
      end

      describe "when the second argument is true" do
        it_behaves_like :process_daemon_keep_stdio_open_true, nil, [false, true]
      end

      describe "when the second argument is non-false" do
        it_behaves_like :process_daemon_keep_stdio_open_true, nil, [false, :yes]
      end
    end
  end
end