# Testing WebSockets { #testing-websockets }

You can use the same `TestClient` to test WebSockets.

For this, you use the `TestClient` in a `with` statement, connecting to the WebSocket:

{* ../../docs_src/app_testing/tutorial002_py310.py hl[27:31] *}

/// note

For more details, check Starlette's documentation for [testing WebSockets](https://www.starlette.dev/testclient/#testing-websocket-sessions).

# Eventos de testing: lifespan y startup - shutdown { #testing-events-lifespan-and-startup-shutdown }

Cuando necesitas que `lifespan` se ejecute en tus tests, puedes usar el `TestClient` con un statement `with`:

{* ../../docs_src/app_testing/tutorial004_py310.py hl[9:15,18,27:28,30:32,41:43] *}


Puedes leer más detalles sobre ["Ejecutar lifespan en tests en el sitio oficial de documentación de Starlette."](https://www.starlette.dev/lifespan/#running-lifespan-in-tests)

	var (
		buildNames    []string
		buildNamesMap = map[string]bool{}
		user, _       = schema.Parse(&tests.User{}, &sync.Map{}, db.NamingStrategy)
		stmt          = gorm.Statement{DB: db, Table: user.Table, Schema: user, Clauses: map[string]clause.Clause{}}
	)

	for _, c := range clauses {
		if _, ok := buildNamesMap[c.Name()]; !ok {
			buildNames = append(buildNames, c.Name())

{
  "Version": "2012-10-17",
  "Statement": [
   {
    "Effect": "Allow",
    "Action": [
     "s3:*"
    ],
    "Resource": [
     "arn:aws:s3:::*"
    ]
   }
  ]

	}}

	for idx, result := range results {
		t.Run(fmt.Sprintf("case #%v", idx), func(t *testing.T) {
			user, _ := schema.Parse(&tests.User{}, &sync.Map{}, db.NamingStrategy)
			stmt := &gorm.Statement{DB: db, Table: user.Table, Schema: user, Clauses: map[string]clause.Clause{}}
			clause.Expr{SQL: result.SQL, Vars: result.Vars}.Build(stmt)
			if stmt.SQL.String() != result.Result {

      throw new AssertionError("this statement should be unreachable");
    }

    @Override
    BoundType typeAsUpperBound() {
      throw new IllegalStateException();
    }

    @Override
    Cut<Comparable<?>> withLowerBoundType(
        BoundType boundType, DiscreteDomain<Comparable<?>> domain) {
      throw new AssertionError("this statement should be unreachable");
    }

    @Override

## Sample `POST` Request

```
http://minio:9000/?Action=AssumeRole&DurationSeconds=3600&Version=2011-06-15&Policy={"Version":"2012-10-17","Statement":[{"Sid":"Stmt1","Effect":"Allow","Action":"s3:*","Resource":"arn:aws:s3:::*"}]}&AUTHPARAMS
```

## Sample Response

```
<?xml version="1.0" encoding="UTF-8"?>

{
   "Version":"2012-10-17",
   "Id":"PutObjectPolicy1",
   "Statement":[{
         "Sid":"DenyObjectsWithInvalidSSEKMS",
         "Effect":"Deny",
         "Principal":"*",
         "Action":"s3:PutObject",
         "Resource":"arn:aws:s3:::multi-key-poc/*",
         "Condition":{
            "StringNotEquals":{
               "s3:x-amz-server-side-encryption-aws-kms-key-id":"minio-default-key"
            }
         }
      }
   ]

)

type Man struct {
	ID     int
	Age    int
	Name   string
	Detail string
}

// Panic-safe BeforeUpdate hook that checks for Changed("age")
func (m *Man) BeforeUpdate(tx *gorm.DB) (err error) {
	if !tx.Statement.Changed("age") {
		return nil
	}
	return nil
}

func TestSubModel(t *testing.T) {
	man := Man{Age: 18, Name: "random-name"}
	if err := DB.Create(&man).Error; err != nil {

"admin:OBDInfo","admin:BandwidthMonitor"],"Resource":["arn:aws:s3:::*"]}]},"readonly":{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:GetBucketLocation","s3:GetObject"],"Resource":["arn:aws:s3:::*"]}]},"readwrite":{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:*"],"Resource":["arn:aws:s3:::*"]}]},"writeonly":{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:PutObject"],"Resource":["arn:aws:s3:::*"]}]}}`,

		// Built-in user...