How to use Exec method of wait_test Package

Best Testcontainers-go code snippet using wait_test.Exec

exec_test.go

Source:exec_test.go

...9	"github.com/docker/go-connections/nat"10	"github.com/testcontainers/testcontainers-go"11	"github.com/testcontainers/testcontainers-go/wait"12)13func ExampleExecStrategy() {14	ctx := context.Background()15	req := testcontainers.ContainerRequest{16		Image:      "localstack/localstack:latest",17		WaitingFor: wait.ForExec([]string{"awslocal", "dynamodb", "list-tables"}),18	}19	localstack, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{20		ContainerRequest: req,21		Started:          true,22	})23	if err != nil {24		panic(err)25	}26	defer localstack.Terminate(ctx) // nolint: errcheck27	// Here you have a running container28}29type mockExecTarget struct {30	waitDuration time.Duration31	successAfter time.Time32	exitCode     int33	failure      error34}35func (st mockExecTarget) Host(_ context.Context) (string, error) {36	return "", errors.New("not implemented")37}38func (st mockExecTarget) MappedPort(_ context.Context, n nat.Port) (nat.Port, error) {39	return n, errors.New("not implemented")40}41func (st mockExecTarget) Logs(_ context.Context) (io.ReadCloser, error) {42	return nil, errors.New("not implemented")43}44func (st mockExecTarget) Exec(ctx context.Context, _ []string) (int, error) {45	time.Sleep(st.waitDuration)46	if err := ctx.Err(); err != nil {47		return st.exitCode, err48	}49	if !st.successAfter.IsZero() && time.Now().After(st.successAfter) {50		return 0, st.failure51	}52	return st.exitCode, st.failure53}54func (st mockExecTarget) State(_ context.Context) (*types.ContainerState, error) {55	return nil, errors.New("not implemented")56}57func TestExecStrategyWaitUntilReady(t *testing.T) {58	target := mockExecTarget{}59	wg := wait.NewExecStrategy([]string{"true"}).60		WithStartupTimeout(30 * time.Second)61	err := wg.WaitUntilReady(context.Background(), target)62	if err != nil {63		t.Fatal(err)64	}65}66func TestExecStrategyWaitUntilReadyForExec(t *testing.T) {67	target := mockExecTarget{}68	wg := wait.ForExec([]string{"true"})69	err := wg.WaitUntilReady(context.Background(), target)70	if err != nil {71		t.Fatal(err)72	}73}74func TestExecStrategyWaitUntilReady_MultipleChecks(t *testing.T) {75	target := mockExecTarget{76		exitCode:     10,77		successAfter: time.Now().Add(2 * time.Second),78	}79	wg := wait.NewExecStrategy([]string{"true"}).80		WithPollInterval(500 * time.Millisecond)81	err := wg.WaitUntilReady(context.Background(), target)82	if err != nil {83		t.Fatal(err)84	}85}86func TestExecStrategyWaitUntilReady_DeadlineExceeded(t *testing.T) {87	ctx, cancel := context.WithTimeout(context.Background(), 500*time.Millisecond)88	defer cancel()89	target := mockExecTarget{90		waitDuration: 1 * time.Second,91	}92	wg := wait.NewExecStrategy([]string{"true"})93	err := wg.WaitUntilReady(ctx, target)94	if err != context.DeadlineExceeded {95		t.Fatal(err)96	}97}98func TestExecStrategyWaitUntilReady_CustomExitCode(t *testing.T) {99	target := mockExecTarget{100		exitCode: 10,101	}102	wg := wait.NewExecStrategy([]string{"true"}).WithExitCodeMatcher(func(exitCode int) bool {103		return exitCode == 10104	})105	err := wg.WaitUntilReady(context.Background(), target)106	if err != nil {107		t.Fatal(err)108	}109}...

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