const (
	Aufs         string = "aufs"
	Overlay      string = "overlay"
	Overlay2     string = "overlay2"
	DeviceMapper string = "devicemapper"
	Unknown      string = ""
)

type CadvisorActions interface {
	// Returns a cAdvisor client to the machine being tested.
	Client() *client.Client
	ClientV2() *v2.Client
}

type DockerActions interface {
	// Run the no-op pause Docker container and return its ID.
	RunPause() string

	// Run the specified command in a Docker busybox container and return its ID.
	RunBusybox(cmd ...string) string

	// Runs a Docker container in the background. Uses the specified DockerRunArgs and command.
	// Returns the ID of the new container.
	//
	// e.g.:
	// Run(DockerRunArgs{Image: "busybox"}, "ping", "www.google.com")
	//   -> docker run busybox ping www.google.com
	Run(args DockerRunArgs, cmd ...string) string
	RunStress(args DockerRunArgs, cmd ...string) string

	Version() []string
	StorageDriver() string
}

type DockerRunArgs struct {
	// Image to use.
	Image string

	// Arguments to the Docker CLI.
	Args []string

	InnerArgs []string
}

type Framework interface {
	// Clean the framework state.
	Cleanup()

	// The testing.T used by the framework and the current test.
	T() *testing.T

	// Returns the hostname being tested.
	Hostname() HostnameInfo

	// Returns the Docker actions for the test framework.
	Docker() DockerActions

	// Returns the shell actions for the test framework.
	Shell() ShellActions

	// Returns the cAdvisor actions for the test framework.
	Cadvisor() CadvisorActions
}

type HostnameInfo struct {
	Host string
	Port int
}

type ShellActions interface {
	// Runs a specified command and arguments. Returns the stdout and stderr.
	Run(cmd string, args ...string) (string, string)
	RunStress(cmd string, args ...string) (string, string)
}