type StorageAPI interface {
	// Stringified version of disk.
	String() string

	// Storage operations.

	// Returns true if disk is online and its valid i.e valid format.json.
	// This has nothing to do with if the drive is hung or not responding.
	// For that individual storage API calls will fail properly. The purpose
	// of this function is to know if the "drive" has "format.json" or not

	expectedOutput string // Expected constant output

	wantException bool
}

func verifyExecTestOutput(t *testing.T, cmd *cobra.Command, c execTestCase) {
	if c.wantException {
		// Ensure tests do not hang for 30s
		c.args = append(c.args, "--timeout=20ms")
	}
	var out bytes.Buffer
	cmd.SetArgs(c.args)
	cmd.SilenceUsage = true
	cmd.SetOut(&out)
	cmd.SetErr(&out)

	fErr := cmd.Execute()