module Test

module Unit

  class TestCase
    require 'open4'
    def run_app(app, *args)
      cmd = [app, args].flatten.join(" ")
      out = nil
      err = nil
      status = Open4.popen4(cmd) { |cid, stdin, stdout, stderr|
        out = stdout.read
        err = stderr.read
        stdin.close
      }
      [out, err, status]
    end

    def assert_success(app, *args)
      args.compact!
      out, err, status = run_app(app, args)
      assert_equal(true, status.success?, 
        "Failure running #{[app,args].delete_if { |i| i.empty? }.join(" ")} "+
        "with error(s):\n => stderr: '#{err}'\n => stdout: '#{out}'.")
      yield(out, err, status) if block_given?
    end

    def assert_failure(app, *args)
      out, err, status = run_app(app, args)
      assert_equal(false, status.success?,
        "No failure running #{[app,args].delete_if { |i| i.empty? }.join(" ")}.")
      yield(out, err, status) if block_given?
    end

    def assert_coredump(app, *args)
      out, err, status = run_app(app, args)
      assert_equal(true, status.coredump?,
        "Running #{[app,args].delete_if { |i| i.empty? }.join(" ")} did not coredump.")
      yield(out, err, status) if block_given?
    end
    def assert_no_coredump(app, *args)
      out, err, status = run_app(app, args)
      assert_equal(false, status.coredump?,
        "Running #{[app,args].delete_if { |i| i.empty? }.join(" ")} caused coredump.")
      yield(out, err, status) if block_given?
    end

    def assert_stopped(app, *args)
      out, err, status = run_app(app, args)
      assert_equal(true, status.stopped?,
        "Running #{[app,args].delete_if { |i| i.empty? }.join(" ")} not stopped.")
      yield(out, err, status) if block_given?
    end

  end
end#module Unit
end#module Test