How to use randomString method of testcontainers Package

Best Testcontainers-go code snippet using testcontainers.randomString

e2e_test.go

Source:e2e_test.go Github

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...29}30var params cliParams31func init() {32 flag.StringVar(&params.ImageName, "image", "livepeer/catalyst", "Docker image to use when loading container")33 flag.StringVar(&params.NetworkName, "network", randomString("catalyst-test-"), "Docker network name to use when starting")34}35func randomString(prefix string) string {36 const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"37 const length = 838 res := make([]byte, length)39 for i := 0; i < length; i++ {40 res[i] = charset[rand.Intn(length)]41 }42 return fmt.Sprintf("%s%s", prefix, string(res))43}44func TestMain(m *testing.M) {45 flag.Parse()46 os.Exit(m.Run())47}48type network struct {49 testcontainers.Network50 name string51}52type catalystContainer struct {53 testcontainers.Container54 webConsole string55 serf string56 http string57 httpCatalyst string58 rtmp string59 ip string60 hostname string61}62func (c *catalystContainer) Terminate(ctx context.Context) {63 c.StopLogProducer()64 c.Container.Terminate(ctx)65}66func TestMultiNodeCatalyst(t *testing.T) {67 if testing.Short() {68 t.Skip("skipping testing in short mode")69 }70 // given71 ctx, cancel := context.WithCancel(context.Background())72 defer cancel()73 network := createNetwork(ctx, t)74 defer network.Remove(ctx)75 h1 := randomString("catalyst-")76 h2 := randomString("catalyst-")77 // when78 c1 := startCatalyst(ctx, t, h1, network.name, defaultMistConfig(h1))79 defer c1.Terminate(ctx)80 c2 := startCatalyst(ctx, t, h2, network.name, mistConfigConnectTo(h2, h1))81 defer c2.Terminate(ctx)82 // then83 requireMembersJoined(t, c1, c2)84 p := startStream(t, c1)85 defer p.Kill()86 requireReplicatedStream(t, c2)87 requireStreamRedirection(t, c1, c2)88}89func createNetwork(ctx context.Context, t *testing.T) *network {90 name := params.NetworkName...

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container_test.go

Source:container_test.go Github

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...27}28func TestStartGenericContainer_Success(t *testing.T) {29 t.Parallel()30 c, err := testcontainers.StartGenericContainer(context.Background(), testcontainers.ContainerRequest{31 Name: randomString(8),32 Image: "alpine",33 })34 require.NotNil(t, c)35 assert.NoError(t, err)36 defer c.Terminate(context.Background()) // nolint: errcheck37}38func TestStartGenericContainer_SuccessButCallbackError(t *testing.T) {39 t.Parallel()40 c, err := testcontainers.StartGenericContainer(context.Background(), testcontainers.ContainerRequest{41 Name: randomString(8),42 Image: "alpine",43 }, testcontainers.WithCallback(func(context.Context, testcontainers.Container, testcontainers.ContainerRequest) error {44 return errors.New("callback error")45 }))46 require.NotNil(t, c)47 defer c.Terminate(context.Background()) // nolint: errcheck48 expected := errors.New("callback error")49 assert.Equal(t, expected, err)50}51func TestStartGenericContainer_NamePrefix(t *testing.T) {52 t.Parallel()53 prefix := randomString(8)54 c, err := testcontainers.StartGenericContainer(context.Background(), testcontainers.ContainerRequest{55 Name: "test",56 Image: "alpine",57 }, testcontainers.WithNamePrefix(prefix))58 require.NotNil(t, c)59 assert.NoError(t, err)60 defer c.Terminate(context.Background()) // nolint: errcheck61 actual, err := c.Name(context.Background())62 expected := fmt.Sprintf("/%s_test", prefix)63 assert.Equal(t, expected, actual)64 assert.NoError(t, err)65}66func TestStartGenericContainer_NameSuffix(t *testing.T) {67 t.Parallel()68 suffix := randomString(8)69 c, err := testcontainers.StartGenericContainer(context.Background(), testcontainers.ContainerRequest{70 Name: "test",71 Image: "alpine",72 }, testcontainers.WithNameSuffix(suffix))73 require.NotNil(t, c)74 assert.NoError(t, err)75 defer c.Terminate(context.Background()) // nolint: errcheck76 actual, err := c.Name(context.Background())77 expected := fmt.Sprintf("/test_%s", suffix)78 assert.Equal(t, expected, actual)79 assert.NoError(t, err)80}81func TestStartGenericContainer_NamePrefixAndSuffix(t *testing.T) {82 t.Parallel()83 prefix := randomString(8)84 suffix := randomString(8)85 c, err := testcontainers.StartGenericContainer(context.Background(), testcontainers.ContainerRequest{86 Name: "test",87 Image: "alpine",88 }, testcontainers.WithNamePrefix(prefix), testcontainers.WithNameSuffix(suffix))89 require.NotNil(t, c)90 assert.NoError(t, err)91 defer c.Terminate(context.Background()) // nolint: errcheck92 actual, err := c.Name(context.Background())93 expected := fmt.Sprintf("/%s_test_%s", prefix, suffix)94 assert.Equal(t, expected, actual)95 assert.NoError(t, err)96}97func TestStartGenericContainer_WithImageName(t *testing.T) {98 t.Parallel()99 c, err := testcontainers.StartGenericContainer(context.Background(), testcontainers.ContainerRequest{100 Name: randomString(8),101 Image: "alpine-unknown",102 }, testcontainers.WithImageName("alpine"))103 require.NotNil(t, c)104 assert.NoError(t, err)105 defer c.Terminate(context.Background()) // nolint: errcheck106}107func TestStartGenericContainer_WithImageTag(t *testing.T) {108 t.Parallel()109 c, err := testcontainers.StartGenericContainer(context.Background(), testcontainers.ContainerRequest{110 Name: randomString(8),111 Image: "alpine:unknown",112 }, testcontainers.WithImageTag("latest"))113 require.NotNil(t, c)114 assert.NoError(t, err)115 defer c.Terminate(context.Background()) // nolint: errcheck116}117func TestStartGenericContainers_Success(t *testing.T) {118 t.Parallel()119 containers, err := testcontainers.StartGenericContainers(context.Background(),120 testcontainers.StartGenericContainerRequest{121 Request: testcontainers.ContainerRequest{122 Name: "postgres",123 Image: "postgres:12-alpine",124 ExposedPorts: []string{":5432"},125 Env: map[string]string{126 "LC_ALL": "C.UTF-8",127 "POSTGRES_DB": "test",128 "POSTGRES_USER": "test",129 "POSTGRES_PASSWORD": "test",130 },131 WaitingFor: wait.ForHealthCheckCmd("pg_isready").132 WithRetries(3).133 WithStartPeriod(time.Second).134 WithTestTimeout(5 * time.Second).135 WithTestInterval(10 * time.Second),136 },137 Options: []testcontainers.GenericContainerOption{138 testcontainers.WithNameSuffix(randomString(8)),139 },140 },141 testcontainers.StartGenericContainerRequest{142 Request: testcontainers.ContainerRequest{143 Name: randomString(8),144 Image: "alpine",145 },146 },147 )148 assert.NoError(t, err)149 require.Len(t, containers, 2)150}151func TestStartGenericContainers_Error(t *testing.T) {152 t.Parallel()153 containers, err := testcontainers.StartGenericContainers(context.Background(),154 testcontainers.StartGenericContainerRequest{155 Request: testcontainers.ContainerRequest{156 Name: randomString(8),157 },158 Options: []testcontainers.GenericContainerOption{159 testcontainers.WithProviderType(-1),160 },161 },162 testcontainers.StartGenericContainerRequest{163 Request: testcontainers.ContainerRequest{164 Name: randomString(8),165 },166 Options: []testcontainers.GenericContainerOption{167 testcontainers.WithProviderType(-1),168 },169 },170 testcontainers.StartGenericContainerRequest{171 Request: testcontainers.ContainerRequest{172 Name: randomString(8),173 Image: "alpine",174 },175 },176 )177 t.Logf("logs:\n%s", err.Error())178 require.NotEmpty(t, containers)179}180func TestStopGenericContainers_Success(t *testing.T) {181 t.Parallel()182 containers, err := testcontainers.StartGenericContainers(context.Background(),183 testcontainers.StartGenericContainerRequest{184 Request: testcontainers.ContainerRequest{185 Name: randomString(8),186 Image: "alpine",187 },188 },189 )190 require.NotEmpty(t, containers)191 require.NoError(t, err)192 err = testcontainers.StopGenericContainers(context.Background(), containers...)193 assert.NoError(t, err)194}195func TestStopGenericContainers_Error(t *testing.T) {196 t.Parallel()197 containers, err := testcontainers.StartGenericContainers(context.Background(),198 testcontainers.StartGenericContainerRequest{199 Request: testcontainers.ContainerRequest{200 Name: randomString(8),201 Image: "alpine",202 },203 },204 )205 require.NotEmpty(t, containers)206 require.NoError(t, err)207 _ = containers[0].Terminate(context.Background()) // nolint: errcheck208 err = testcontainers.StopGenericContainers(context.Background(), containers...)209 require.Error(t, err)210 t.Logf("logs:\n%s", err.Error())211}212// nolint: unparam213func randomString(length int) string {214 var rngSeed int64215 _ = binary.Read(crand.Reader, binary.LittleEndian, &rngSeed) // nolint: errcheck216 r := rand.New(rand.NewSource(rngSeed)) // nolint: gosec217 result := make([]byte, length/2)218 _, _ = r.Read(result)219 return hex.EncodeToString(result)220}...

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helper_test.go

Source:helper_test.go Github

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1package harego_test2import (3 "context"4 "fmt"5 "io"6 "math/rand"7 "net/http"8 "os"9 "strconv"10 "strings"11 "testing"12 "time"13 "github.com/blokur/harego"14 "github.com/blokur/harego/internal"15 "github.com/blokur/testament"16 "github.com/spf13/viper"17 "github.com/stretchr/testify/assert"18 "github.com/stretchr/testify/require"19 "github.com/testcontainers/testcontainers-go"20 "github.com/testcontainers/testcontainers-go/wait"21)22func init() {23 viper.AutomaticEnv()24 rand.Seed(time.Now().UnixNano())25 internal.RabbitMQAddr = viper.GetString(internal.RabbitMQAddrName)26 internal.RabbitMQUser = viper.GetString(internal.RabbitMQUserName)27 internal.RabbitMQPass = viper.GetString(internal.RabbitMQPassName)28 internal.RabbitMQVirtual = viper.GetString(internal.RabbitMQVirtualName)29}30func randomBody(lines int) string {31 body := make([]string, lines)32 for i := range body {33 body[i] = testament.RandomString(rand.Intn(100) + 10)34 }35 return strings.Join(body, "\n")36}37// getClient creates a client without a queue if the queueName is empty.38func getClient(t *testing.T, queueName string, conf ...harego.ConfigFunc) *harego.Client {39 t.Helper()40 exchange := "test." + testament.RandomString(20)41 vh := "test." + testament.RandomString(20)42 return getNamedClient(t, vh, exchange, queueName, conf...)43}44// getNamedClient creates a client without a queue if the queueName is empty.45func getNamedClient(t *testing.T, vh, exchange, queueName string, conf ...harego.ConfigFunc) *harego.Client {46 t.Helper()47 var (48 adminURL string49 err error50 )51 apiAddress := strings.Split(internal.RabbitMQAddr, ":")[0]52 adminPort := 1567253 if v, ok := os.LookupEnv("RABBITMQ_ADMIN_PORT"); ok {54 adminPort, err = strconv.Atoi(v)55 if err != nil {56 adminPort = 1567257 }58 }59 if vh != "" {60 adminURL = fmt.Sprintf("http://%s:%d/api/vhosts/%s", apiAddress, adminPort, vh)61 req, err := http.NewRequest("PUT", adminURL, http.NoBody)62 require.NoError(t, err)63 req.SetBasicAuth(internal.RabbitMQUser, internal.RabbitMQPass)64 resp, err := http.DefaultClient.Do(req)65 if resp != nil && resp.Body != nil {66 defer func() {67 io.Copy(io.Discard, resp.Body)68 resp.Body.Close()69 }()70 }71 require.NoError(t, err)72 }73 url := fmt.Sprintf("amqp://%s:%s@%s/%s", internal.RabbitMQUser, internal.RabbitMQPass, internal.RabbitMQAddr, vh)74 conf = append([]harego.ConfigFunc{75 harego.ExchangeName(exchange),76 harego.QueueName(queueName),77 }, conf...)78 e, err := harego.NewClient(harego.URLConnector(url),79 conf...,80 )81 require.NoError(t, err)82 t.Cleanup(func() {83 assert.Eventually(t, func() bool {84 e.Close()85 return true86 }, 2*time.Second, 10*time.Millisecond)87 urls := []string{88 fmt.Sprintf("http://%s:%d/api/exchanges/%s", apiAddress, adminPort, exchange),89 }90 if queueName != "" {91 urls = append(urls,92 fmt.Sprintf("http://%s:%d/api/queues/%s", apiAddress, adminPort, queueName),93 )94 }95 if vh != "" {96 urls = append(urls, adminURL)97 }98 for _, url := range urls {99 func() {100 req, err := http.NewRequest("DELETE", url, http.NoBody)101 require.NoError(t, err)102 req.SetBasicAuth(internal.RabbitMQUser, internal.RabbitMQPass)103 resp, err := http.DefaultClient.Do(req)104 if resp != nil && resp.Body != nil {105 defer func() {106 io.Copy(io.Discard, resp.Body)107 resp.Body.Close()108 }()109 }110 require.NoError(t, err)111 }()112 }113 })114 return e115}116// getContainer returns a new container running rabbimq that is ready for117// accepting connections.118func getContainer(t *testing.T) (container testcontainers.Container, addr string) {119 t.Helper()120 ctx := context.Background()121 req := testcontainers.ContainerRequest{122 Image: "rabbitmq:3.8.19-management-alpine",123 ExposedPorts: []string{"5672/tcp", "15672/tcp"},124 WaitingFor: wait.ForListeningPort("5672/tcp"),125 }126 container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{127 ContainerRequest: req,128 Started: true,129 })130 require.NoError(t, err)131 ip, err := container.Host(ctx)132 require.NoError(t, err)133 port, err := container.MappedPort(ctx, "5672")134 require.NoError(t, err)135 t.Cleanup(func() {136 container.Terminate(ctx)137 })138 return container, fmt.Sprintf("amqp://%s:%s/", ip, port.Port())139}140// restartRabbitMQ restarts the rabbitmq server inside the container.141func restartRabbitMQ(t *testing.T, container testcontainers.Container) {142 t.Helper()143 ctx, cancel := context.WithTimeout(context.Background(), time.Minute)144 defer cancel()145 _, err := container.Exec(ctx, []string{146 "rabbitmqctl",147 "stop_app",148 })149 require.NoError(t, err)150 go func() {151 ctx, cancel := context.WithTimeout(context.Background(), time.Minute)152 defer cancel()153 container.Exec(ctx, []string{154 "rabbitmqctl",155 "start_app",156 })157 }()158}...

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randomString

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1import (2func main() {3 ctx := context.Background()4 req := testcontainers.ContainerRequest{5 ExposedPorts: []string{"6379/tcp"},6 WaitingFor: wait.ForListeningPort("6379/tcp"),7 }8 redisContainer, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{9 })10 if err != nil {11 panic(err)12 }13 defer redisContainer.Terminate(ctx)14 ip, err := redisContainer.Host(ctx)15 if err != nil {16 panic(err)17 }18 port, err := redisContainer.MappedPort(ctx, "6379/tcp")19 if err != nil {20 panic(err)21 }22 redisClient := redis.NewClient(&redis.Options{23 Addr: fmt.Sprintf("%s:%s", ip, port.Port()),24 })25 pong, err := redisClient.Ping().Result()26 if err != nil {27 panic(err)28 }29 fmt.Println(pong)30}

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randomString

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1import (2func main() {3 randomString := testcontainers.RandomString(10)4 fmt.Println(randomString)5}6import (7func main() {8 randomString := testcontainers.RandomString(10)9 fmt.Println(randomString)10}11import (12func main() {13 randomString := testcontainers.RandomString(10)14 fmt.Println(randomString)15}16import (17func main() {18 randomString := testcontainers.RandomString(10)19 fmt.Println(randomString)20}21import (22func main() {23 randomString := testcontainers.RandomString(10)24 fmt.Println(randomString)25}26import (27func main() {28 randomString := testcontainers.RandomString(10)29 fmt.Println(randomString)30}31import (32func main() {33 randomString := testcontainers.RandomString(10)34 fmt.Println(randomString)35}36import (37func main() {38 randomString := testcontainers.RandomString(10)39 fmt.Println(randomString)40}41import (

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randomString

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1import (2func main() {3 randomString := testcontainers.RandomString(10)4 fmt.Println("Random string: ", randomString)5}6import (7func main() {8 rand.Seed(time.Now().UnixNano())9 var seededRand *rand.Rand = rand.New(10 rand.NewSource(time.Now().UnixNano()))11 b := make([]byte, 10)12 for i := range b {13 b[i] = charset[seededRand.Intn(len(charset))]14 }15 fmt.Println(string(b))16}17import (18func main() {19 rand.Seed(time.Now().UnixNano())20 fmt.Println(rand.Intn(100))21}22import (23func main() {24 rand.Seed(time.Now().UnixNano())25 fmt.Println(rand.Intn(100-50) + 50)26}27import (28func main() {29 rand.Seed(time.Now().UnixNano())30 fmt.Println(rand.Float64())31}

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randomString

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1import (2func main() {3 client, err := docker.NewClientFromEnv()4 if err != nil {5 log.Fatal(err)6 }7 pool, err := dockertest.NewPool("")8 if err != nil {9 log.Fatal(err)10 }11 resource, err := pool.RunWithOptions(&dockertest.RunOptions{12 Cmd: []string{"sleep", "3600"},13 })14 if err != nil {15 log.Fatalf("Could not start resource: %s", err)16 }17 if err := pool.Retry(func() error {18 client, err = docker.NewClientFromEnv()19 if err != nil {20 }21 return client.Ping()22 }); err != nil {23 log.Fatalf("Could not connect to docker: %s", err)24 }25 if err := pool.Purge(resource); err != nil {26 log.Fatalf("Could not purge resource: %s", err)27 }28 randomString := randomstring.RandomString(10)29 file, err := os.Create(randomString)30 if err != nil {31 log.Fatalf("Could not create file: %s", err)32 }33 defer file.Close()34 time.Sleep(10 * time.Second)35 fmt.Println("Done")36}37import (

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randomString

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1import (2func main() {3 fmt.Println(testcontainers.RandString(10))4}5import (6func main() {7 ctx := context.Background()8 req := testcontainers.ContainerRequest{9 ExposedPorts: []string{"6379/tcp"},10 WaitingFor: wait.ForListeningPort("6379/tcp"),11 }12 redisContainer, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{13 })14 if err != nil {15 panic(err)16 }17 defer redisContainer.Terminate(ctx)18 redisHost, err := redisContainer.Host(ctx)19 if err != nil {20 panic(err)21 }22 redisPort, err := redisContainer.MappedPort(ctx, "6379/tcp")23 if err != nil {24 panic(err)25 }26 fmt.Println(redisHost, redisPort.Int())27}

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randomString

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1import (2func main() {3 fmt.Println(testcontainers.RandomString(10))4}5import "github.com/testcontainers/testcontainers-go"6ctx := context.Background()7req := testcontainers.ContainerRequest{8 ExposedPorts: []string{"80/tcp"},9 Cmd: []string{"echo", "hello world"},10 WaitingFor: wait.ForLog("hello world"),11}12container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{13})14err = container.Start(ctx)15ip, err := container.Host(ctx)16port, err := container.MappedPort(ctx, "80")17id, err := container.ContainerID(ctx)18err = container.Terminate(ctx)19err = container.Remove(ctx)20import (21func main() {22 ctx := context.Background()23 req := testcontainers.ContainerRequest{24 ExposedPorts: []string{"80/tcp"},25 Cmd: []string{"echo", "hello world"},26 WaitingFor: wait.ForLog("hello world"),27 }28 container, err := testcontainers.GenericContainer(ctx, testcontainers.GenericContainerRequest{

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randomString

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1import (2func main() {3 fmt.Println(testcontainers.RandomString(10))4}5import (6func main() {7 fmt.Println(testcontainers.RandomString(10))8}9import (10func main() {11 fmt.Println(testcontainers.RandomString(10))12}13import (14func main() {15 fmt.Println(testcontainers.RandomString(10))16}17import (18func main() {19 fmt.Println(testcontainers.RandomString(10))20}21import (22func main() {23 fmt.Println(testcontainers.RandomString(10))24}25import (26func main() {27 fmt.Println(testcontainers.RandomString(10))28}

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