Refactor the Sandbox package into Sandbox + Container.

This is a necessary prerequisite for supporting multiple containers in a single
sandbox.

All the commands (in cmd package) now call operations on Containers (container
package). When a Container first starts, it will create a Sandbox with the same
ID.

The Sandbox class is now simpler, as it only knows how to create boot/gofer
processes, and how to forward commands into the running boot process.

There are TODOs sprinkled around for additional support for multiple
containers. Most notably, we need to detect when a container is intended to run
in an existing sandbox (by reading the metadata), and then have some way to
signal to the sandbox to start a new container. Other urpc calls into the
sandbox need to pass the container ID, so the sandbox can run the operation on
the given container. These are only half-plummed through right now.

PiperOrigin-RevId: 196688269
Change-Id: I1ecf4abbb9dd8987a53ae509df19341aaf42b5b0

1 files changed, 0 insertions, 665 deletions

diff --git a/runsc/sandbox/sandbox_test.go b/runsc/sandbox/sandbox_test.go
deleted file mode 100644
index 1fac38a29..000000000
--- a/runsc/sandbox/sandbox_test.go
+++ /dev/null
@@ -1,665 +0,0 @@
-// Copyright 2018 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package sandbox_test
-
-import (
-	"encoding/json"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"os"
-	"os/signal"
-	"path/filepath"
-	"reflect"
-	"strings"
-	"syscall"
-	"testing"
-	"time"
-
-	"context"
-	"flag"
-	"github.com/google/subcommands"
-	specs "github.com/opencontainers/runtime-spec/specs-go"
-	"golang.org/x/sys/unix"
-	"gvisor.googlesource.com/gvisor/pkg/abi/linux"
-	"gvisor.googlesource.com/gvisor/pkg/log"
-	"gvisor.googlesource.com/gvisor/pkg/sentry/control"
-	"gvisor.googlesource.com/gvisor/pkg/sentry/kernel/auth"
-	"gvisor.googlesource.com/gvisor/pkg/unet"
-	"gvisor.googlesource.com/gvisor/runsc/boot"
-	"gvisor.googlesource.com/gvisor/runsc/cmd"
-	"gvisor.googlesource.com/gvisor/runsc/sandbox"
-)
-
-func init() {
-	log.SetLevel(log.Debug)
-}
-
-// writeSpec writes the spec to disk in the given directory.
-func writeSpec(dir string, spec *specs.Spec) error {
-	b, err := json.Marshal(spec)
-	if err != nil {
-		return err
-	}
-	return ioutil.WriteFile(filepath.Join(dir, "config.json"), b, 0755)
-}
-
-// newSpecWithArgs creates a simple spec with the given args suitable for use
-// in tests.
-func newSpecWithArgs(args ...string) *specs.Spec {
-	spec := &specs.Spec{
-		// The host filesystem root is the sandbox root.
-		Root: &specs.Root{
-			Path:     "/",
-			Readonly: true,
-		},
-		Process: &specs.Process{
-			Args: args,
-			Env: []string{
-				"PATH=" + os.Getenv("PATH"),
-			},
-		},
-	}
-	return spec
-}
-
-// shutdownSignal will be sent to the sandbox in order to shut down cleanly.
-const shutdownSignal = syscall.SIGUSR2
-
-// setupSandbox creates a bundle and root dir for the sandbox, generates a test
-// config, and writes the spec to config.json in the bundle dir.
-func setupSandbox(spec *specs.Spec) (rootDir, bundleDir string, conf *boot.Config, err error) {
-	rootDir, err = ioutil.TempDir("", "sandboxes")
-	if err != nil {
-		return "", "", nil, fmt.Errorf("error creating root dir: %v", err)
-	}
-
-	bundleDir, err = ioutil.TempDir("", "bundle")
-	if err != nil {
-		return "", "", nil, fmt.Errorf("error creating bundle dir: %v", err)
-	}
-
-	if err = writeSpec(bundleDir, spec); err != nil {
-		return "", "", nil, fmt.Errorf("error writing spec: %v", err)
-	}
-
-	conf = &boot.Config{
-		RootDir: rootDir,
-		Network: boot.NetworkNone,
-	}
-
-	return rootDir, bundleDir, conf, nil
-}
-
-// uniqueSandboxID generates a unique sandbox id for each test.
-//
-// The sandbox id is used to create an abstract unix domain socket, which must
-// be unique.  While the sandbox forbids creating two sandboxes with the same
-// name, sometimes between test runs the socket does not get cleaned up quickly
-// enough, causing sandbox creation to fail.
-func uniqueSandboxID() string {
-	return fmt.Sprintf("test-sandbox-%d", time.Now().UnixNano())
-}
-
-// waitForProcessList waits for the given process list to show up in the sandbox.
-func waitForProcessList(s *sandbox.Sandbox, expected []*control.Process) error {
-	var got []*control.Process
-	for start := time.Now(); time.Now().Sub(start) < 10*time.Second; {
-		var err error
-		got, err := s.Processes()
-		if err != nil {
-			return fmt.Errorf("error getting process data from sandbox: %v", err)
-		}
-		if procListsEqual(got, expected) {
-			return nil
-		}
-		// Process might not have started, try again...
-		time.Sleep(10 * time.Millisecond)
-	}
-	return fmt.Errorf("sandbox got process list: %s, want: %s", procListToString(got), procListToString(expected))
-}
-
-// TestLifecycle tests the basic Create/Start/Signal/Destroy sandbox lifecycle.
-// It verifies after each step that the sandbox can be loaded from disk, and
-// has the correct status.
-func TestLifecycle(t *testing.T) {
-	// The sandbox will just sleep for a long time.  We will kill it before
-	// it finishes sleeping.
-	spec := newSpecWithArgs("sleep", "100")
-
-	rootDir, bundleDir, conf, err := setupSandbox(spec)
-	if err != nil {
-		t.Fatalf("error setting up sandbox: %v", err)
-	}
-	defer os.RemoveAll(rootDir)
-	defer os.RemoveAll(bundleDir)
-
-	// expectedPL lists the expected process state of the sandbox.
-	expectedPL := []*control.Process{
-		{
-			UID:  0,
-			PID:  1,
-			PPID: 0,
-			C:    0,
-			Cmd:  "sleep",
-		},
-	}
-	// Create the sandbox.
-	id := uniqueSandboxID()
-	if _, err := sandbox.Create(id, spec, conf, bundleDir, "", "", nil); err != nil {
-		t.Fatalf("error creating sandbox: %v", err)
-	}
-	// Load the sandbox from disk and check the status.
-	s, err := sandbox.Load(rootDir, id)
-	if err != nil {
-		t.Fatalf("error loading sandbox: %v", err)
-	}
-	if got, want := s.Status, sandbox.Created; got != want {
-		t.Errorf("sandbox status got %v, want %v", got, want)
-	}
-
-	// List should return the sandbox id.
-	ids, err := sandbox.List(rootDir)
-	if err != nil {
-		t.Fatalf("error listing sandboxes: %v", err)
-	}
-	if got, want := ids, []string{id}; !reflect.DeepEqual(got, want) {
-		t.Errorf("sandbox list got %v, want %v", got, want)
-	}
-
-	// Start the sandbox.
-	if err := s.Start(conf); err != nil {
-		t.Fatalf("error starting sandbox: %v", err)
-	}
-	// Load the sandbox from disk and check the status.
-	s, err = sandbox.Load(rootDir, id)
-	if err != nil {
-		t.Fatalf("error loading sandbox: %v", err)
-	}
-	if got, want := s.Status, sandbox.Running; got != want {
-		t.Errorf("sandbox status got %v, want %v", got, want)
-	}
-
-	// Verify that "sleep 100" is running.
-	if err := waitForProcessList(s, expectedPL); err != nil {
-		t.Error(err)
-	}
-
-	// Send the sandbox a signal, which we catch and use to cleanly
-	// shutdown.
-	if err := s.Signal(shutdownSignal); err != nil {
-		t.Fatalf("error sending signal %v to sandbox: %v", shutdownSignal, err)
-	}
-	// Wait for it to die.
-	if _, err := s.Wait(); err != nil {
-		t.Fatalf("error waiting on sandbox: %v", err)
-	}
-	// Load the sandbox from disk and check the status.
-	s, err = sandbox.Load(rootDir, id)
-	if err != nil {
-		t.Fatalf("error loading sandbox: %v", err)
-	}
-	if got, want := s.Status, sandbox.Stopped; got != want {
-		t.Errorf("sandbox status got %v, want %v", got, want)
-	}
-
-	// Destroy the sandbox.
-	if err := s.Destroy(); err != nil {
-		t.Fatalf("error destroying sandbox: %v", err)
-	}
-
-	// List should not return the sandbox id.
-	ids, err = sandbox.List(rootDir)
-	if err != nil {
-		t.Fatalf("error listing sandboxes: %v", err)
-	}
-	if len(ids) != 0 {
-		t.Errorf("expected sandbox list to be empty, but got %v", ids)
-	}
-
-	// Loading the sandbox by id should fail.
-	if _, err = sandbox.Load(rootDir, id); err == nil {
-		t.Errorf("expected loading destroyed sandbox to fail, but it did not")
-	}
-}
-
-// Test the we can execute the application with different path formats.
-func TestExePath(t *testing.T) {
-	for _, test := range []struct {
-		path    string
-		success bool
-	}{
-		{path: "true", success: true},
-		{path: "bin/true", success: true},
-		{path: "/bin/true", success: true},
-		{path: "thisfiledoesntexit", success: false},
-		{path: "bin/thisfiledoesntexit", success: false},
-		{path: "/bin/thisfiledoesntexit", success: false},
-	} {
-		spec := newSpecWithArgs(test.path)
-		rootDir, bundleDir, conf, err := setupSandbox(spec)
-		if err != nil {
-			t.Fatalf("exec: %s, error setting up sandbox: %v", test.path, err)
-		}
-
-		ws, err := sandbox.Run(uniqueSandboxID(), spec, conf, bundleDir, "", "", nil)
-
-		os.RemoveAll(rootDir)
-		os.RemoveAll(bundleDir)
-
-		if test.success {
-			if err != nil {
-				t.Errorf("exec: %s, error running sandbox: %v", test.path, err)
-			}
-			if ws.ExitStatus() != 0 {
-				t.Errorf("exec: %s, got exit status %v want %v", test.path, ws.ExitStatus(), 0)
-			}
-		} else {
-			if err == nil {
-				t.Errorf("exec: %s, got: no error, want: error", test.path)
-			}
-		}
-	}
-}
-
-// Test the we can retrieve the application exit status from the sandbox.
-func TestAppExitStatus(t *testing.T) {
-	// First sandbox will succeed.
-	succSpec := newSpecWithArgs("true")
-
-	rootDir, bundleDir, conf, err := setupSandbox(succSpec)
-	if err != nil {
-		t.Fatalf("error setting up sandbox: %v", err)
-	}
-	defer os.RemoveAll(rootDir)
-	defer os.RemoveAll(bundleDir)
-
-	ws, err := sandbox.Run(uniqueSandboxID(), succSpec, conf, bundleDir, "", "", nil)
-	if err != nil {
-		t.Fatalf("error running sandbox: %v", err)
-	}
-	if ws.ExitStatus() != 0 {
-		t.Errorf("got exit status %v want %v", ws.ExitStatus(), 0)
-	}
-
-	// Second sandbox exits with non-zero status.
-	wantStatus := 123
-	errSpec := newSpecWithArgs("bash", "-c", fmt.Sprintf("exit %d", wantStatus))
-
-	rootDir2, bundleDir2, conf, err := setupSandbox(errSpec)
-	if err != nil {
-		t.Fatalf("error setting up sandbox: %v", err)
-	}
-	defer os.RemoveAll(rootDir2)
-	defer os.RemoveAll(bundleDir2)
-
-	ws, err = sandbox.Run(uniqueSandboxID(), succSpec, conf, bundleDir2, "", "", nil)
-	if err != nil {
-		t.Fatalf("error running sandbox: %v", err)
-	}
-	if ws.ExitStatus() != wantStatus {
-		t.Errorf("got exit status %v want %v", ws.ExitStatus(), wantStatus)
-	}
-}
-
-// TestExec verifies that a sandbox can exec a new program.
-func TestExec(t *testing.T) {
-	const uid = 343
-	spec := newSpecWithArgs("sleep", "100")
-
-	rootDir, bundleDir, conf, err := setupSandbox(spec)
-	if err != nil {
-		t.Fatalf("error setting up sandbox: %v", err)
-	}
-	defer os.RemoveAll(rootDir)
-	defer os.RemoveAll(bundleDir)
-
-	// Create and start the sandbox.
-	s, err := sandbox.Create(uniqueSandboxID(), spec, conf, bundleDir, "", "", nil)
-	if err != nil {
-		t.Fatalf("error creating sandbox: %v", err)
-	}
-	defer s.Destroy()
-	if err := s.Start(conf); err != nil {
-		t.Fatalf("error starting sandbox: %v", err)
-	}
-
-	// expectedPL lists the expected process state of the sandbox.
-	expectedPL := []*control.Process{
-		{
-			UID:  0,
-			PID:  1,
-			PPID: 0,
-			C:    0,
-			Cmd:  "sleep",
-		},
-		{
-			UID:  uid,
-			PID:  2,
-			PPID: 0,
-			C:    0,
-			Cmd:  "sleep",
-		},
-	}
-
-	// Verify that "sleep 100" is running.
-	if err := waitForProcessList(s, expectedPL[:1]); err != nil {
-		t.Error(err)
-	}
-
-	execArgs := control.ExecArgs{
-		Filename:         "/bin/sleep",
-		Argv:             []string{"sleep", "5"},
-		Envv:             []string{"PATH=" + os.Getenv("PATH")},
-		WorkingDirectory: "/",
-		KUID:             uid,
-	}
-
-	// Verify that "sleep 100" and "sleep 5" are running after exec.
-	// First, start running exec (whick blocks).
-	status := make(chan error, 1)
-	go func() {
-		exitStatus, err := s.Execute(&execArgs)
-		if err != nil {
-			status <- err
-		} else if exitStatus != 0 {
-			status <- fmt.Errorf("failed with exit status: %v", exitStatus)
-		} else {
-			status <- nil
-		}
-	}()
-
-	if err := waitForProcessList(s, expectedPL); err != nil {
-		t.Fatal(err)
-	}
-
-	// Ensure that exec finished without error.
-	select {
-	case <-time.After(10 * time.Second):
-		t.Fatalf("sandbox timed out waiting for exec to finish.")
-	case st := <-status:
-		if st != nil {
-			t.Errorf("sandbox failed to exec %v: %v", execArgs, err)
-		}
-	}
-}
-
-// TestCapabilities verifies that:
-// - Running exec as non-root UID and GID will result in an error (because the
-//   executable file can't be read).
-// - Running exec as non-root with CAP_DAC_OVERRIDE succeeds because it skips
-//   this check.
-func TestCapabilities(t *testing.T) {
-	const uid = 343
-	const gid = 2401
-	spec := newSpecWithArgs("sleep", "100")
-
-	// We generate files in the host temporary directory.
-	spec.Mounts = append(spec.Mounts, specs.Mount{
-		Destination: os.TempDir(),
-		Source:      os.TempDir(),
-		Type:        "bind",
-	})
-
-	rootDir, bundleDir, conf, err := setupSandbox(spec)
-	if err != nil {
-		t.Fatalf("error setting up sandbox: %v", err)
-	}
-	defer os.RemoveAll(rootDir)
-	defer os.RemoveAll(bundleDir)
-
-	// Create and start the sandbox.
-	s, err := sandbox.Create(uniqueSandboxID(), spec, conf, bundleDir, "", "", nil)
-	if err != nil {
-		t.Fatalf("error creating sandbox: %v", err)
-	}
-	defer s.Destroy()
-	if err := s.Start(conf); err != nil {
-		t.Fatalf("error starting sandbox: %v", err)
-	}
-
-	// expectedPL lists the expected process state of the sandbox.
-	expectedPL := []*control.Process{
-		{
-			UID:  0,
-			PID:  1,
-			PPID: 0,
-			C:    0,
-			Cmd:  "sleep",
-		},
-		{
-			UID:  uid,
-			PID:  2,
-			PPID: 0,
-			C:    0,
-			Cmd:  "exe",
-		},
-	}
-	if err := waitForProcessList(s, expectedPL[:1]); err != nil {
-		t.Fatalf("Failed to wait for sleep to start, err: %v", err)
-	}
-
-	// Create an executable that can't be run with the specified UID:GID.
-	// This shouldn't be callable within the sandbox until we add the
-	// CAP_DAC_OVERRIDE capability to skip the access check.
-	exePath := filepath.Join(rootDir, "exe")
-	if err := ioutil.WriteFile(exePath, []byte("#!/bin/sh\necho hello"), 0770); err != nil {
-		t.Fatalf("couldn't create executable: %v", err)
-	}
-	defer os.Remove(exePath)
-
-	// Need to traverse the intermediate directory.
-	os.Chmod(rootDir, 0755)
-
-	execArgs := control.ExecArgs{
-		Filename:         exePath,
-		Argv:             []string{exePath},
-		Envv:             []string{"PATH=" + os.Getenv("PATH")},
-		WorkingDirectory: "/",
-		KUID:             uid,
-		KGID:             gid,
-		Capabilities:     &auth.TaskCapabilities{},
-	}
-
-	// "exe" should fail because we don't have the necessary permissions.
-	if _, err := s.Execute(&execArgs); err == nil {
-		t.Fatalf("sandbox executed without error, but an error was expected")
-	}
-
-	// Now we run with the capability enabled and should succeed.
-	execArgs.Capabilities = &auth.TaskCapabilities{
-		EffectiveCaps: auth.CapabilitySetOf(linux.CAP_DAC_OVERRIDE),
-	}
-	// "exe" should not fail this time.
-	if _, err := s.Execute(&execArgs); err != nil {
-		t.Fatalf("sandbox failed to exec %v: %v", execArgs, err)
-	}
-}
-
-// Test that an tty FD is sent over the console socket if one is provided.
-func TestConsoleSocket(t *testing.T) {
-	spec := newSpecWithArgs("true")
-	rootDir, bundleDir, conf, err := setupSandbox(spec)
-	if err != nil {
-		t.Fatalf("error setting up sandbox: %v", err)
-	}
-	defer os.RemoveAll(rootDir)
-	defer os.RemoveAll(bundleDir)
-
-	// Create a named socket and start listening.  We use a relative path
-	// to avoid overflowing the unix path length limit (108 chars).
-	socketPath := filepath.Join(bundleDir, "socket")
-	cwd, err := os.Getwd()
-	if err != nil {
-		t.Fatalf("error getting cwd: %v", err)
-	}
-	socketRelPath, err := filepath.Rel(cwd, socketPath)
-	if err != nil {
-		t.Fatalf("error getting relative path for %q from cwd %q: %v", socketPath, cwd, err)
-	}
-	if len(socketRelPath) > len(socketPath) {
-		socketRelPath = socketPath
-	}
-	srv, err := unet.BindAndListen(socketRelPath, false)
-	if err != nil {
-		t.Fatalf("error binding and listening to socket %q: %v", socketPath, err)
-	}
-	defer os.Remove(socketPath)
-
-	// Create the sandbox and pass the socket name.
-	id := uniqueSandboxID()
-	s, err := sandbox.Create(id, spec, conf, bundleDir, socketRelPath, "", nil)
-	if err != nil {
-		t.Fatalf("error creating sandbox: %v", err)
-	}
-
-	// Open the othe end of the socket.
-	sock, err := srv.Accept()
-	if err != nil {
-		t.Fatalf("error accepting socket connection: %v", err)
-	}
-
-	// Allow 3 fds to be received.  We only expect 1.
-	r := sock.Reader(true /* blocking */)
-	r.EnableFDs(1)
-
-	// The socket is closed right after sending the FD, so EOF is
-	// an allowed error.
-	b := [][]byte{{}}
-	if _, err := r.ReadVec(b); err != nil && err != io.EOF {
-		t.Fatalf("error reading from socket connection: %v", err)
-	}
-
-	// We should have gotten a control message.
-	fds, err := r.ExtractFDs()
-	if err != nil {
-		t.Fatalf("error extracting fds from socket connection: %v", err)
-	}
-	if len(fds) != 1 {
-		t.Fatalf("got %d fds from socket, wanted 1", len(fds))
-	}
-
-	// Verify that the fd is a terminal.
-	if _, err := unix.IoctlGetTermios(fds[0], unix.TCGETS); err != nil {
-		t.Errorf("fd is not a terminal (ioctl TGGETS got %v)", err)
-	}
-
-	// Shut it down.
-	if err := s.Destroy(); err != nil {
-		t.Fatalf("error destroying sandbox: %v", err)
-	}
-
-	// Close socket.
-	if err := srv.Close(); err != nil {
-		t.Fatalf("error destroying sandbox: %v", err)
-	}
-}
-
-func TestSpecUnsupported(t *testing.T) {
-	spec := newSpecWithArgs("/bin/true")
-	spec.Process.SelinuxLabel = "somelabel"
-
-	// These are normally set by docker and will just cause warnings to be logged.
-	spec.Process.ApparmorProfile = "someprofile"
-	spec.Linux = &specs.Linux{Seccomp: &specs.LinuxSeccomp{}}
-
-	rootDir, bundleDir, conf, err := setupSandbox(spec)
-	if err != nil {
-		t.Fatalf("error setting up sandbox: %v", err)
-	}
-	defer os.RemoveAll(rootDir)
-	defer os.RemoveAll(bundleDir)
-
-	id := uniqueSandboxID()
-	_, err = sandbox.Create(id, spec, conf, bundleDir, "", "", nil)
-	if err == nil || !strings.Contains(err.Error(), "is not supported") {
-		t.Errorf("sandbox.Create() wrong error, got: %v, want: *is not supported, spec.Process: %+v", err, spec.Process)
-	}
-}
-
-// procListsEqual is used to check whether 2 Process lists are equal for all
-// implemented fields.
-func procListsEqual(got, want []*control.Process) bool {
-	if len(got) != len(want) {
-		return false
-	}
-	for i := range got {
-		pd1 := got[i]
-		pd2 := want[i]
-		// Zero out unimplemented and timing dependant fields.
-		pd1.Time, pd2.Time = "", ""
-		pd1.STime, pd2.STime = "", ""
-		pd1.C, pd2.C = 0, 0
-		if *pd1 != *pd2 {
-			return false
-		}
-	}
-	return true
-}
-
-func procListToString(pl []*control.Process) string {
-	strs := make([]string, 0, len(pl))
-	for _, p := range pl {
-		strs = append(strs, fmt.Sprintf("%+v", p))
-	}
-	return fmt.Sprintf("[%s]", strings.Join(strs, ","))
-}
-
-// TestMain acts like runsc if it is called with the "boot" argument, otherwise
-// it just runs the tests.  This is required because creating a sandbox will
-// call "/proc/self/exe boot".  Normally /proc/self/exe is the runsc binary,
-// but for tests we have to fake it.
-func TestMain(m *testing.M) {
-	// exit writes coverage data before exiting.
-	exit := func(status int) {
-		os.Exit(status)
-	}
-
-	if !flag.Parsed() {
-		flag.Parse()
-	}
-
-	// If we are passed one of the commands then run it.
-	subcommands.Register(new(cmd.Boot), "boot")
-	subcommands.Register(new(cmd.Gofer), "gofer")
-	switch flag.Arg(0) {
-	case "boot", "gofer":
-		// Run the command in a goroutine so we can block the main
-		// thread waiting for shutdownSignal.
-		go func() {
-			conf := &boot.Config{
-				RootDir: "unused-root-dir",
-				Network: boot.NetworkNone,
-			}
-			var ws syscall.WaitStatus
-			subcmdCode := subcommands.Execute(context.Background(), conf, &ws)
-			if subcmdCode != subcommands.ExitSuccess {
-				panic(fmt.Sprintf("command failed to execute, err: %v", subcmdCode))
-			}
-			// Sandbox exited normally. Shut down this process.
-			os.Exit(ws.ExitStatus())
-		}()
-
-		// Shutdown cleanly when the shutdownSignal is received.  This
-		// allows us to write coverage data before exiting.
-		sigc := make(chan os.Signal, 1)
-		signal.Notify(sigc, shutdownSignal)
-		<-sigc
-		exit(0)
-	default:
-		// Otherwise run the tests.
-		exit(m.Run())
-	}
-}