user_in_db = UserInDB(**user_in.model_dump(), hashed_password=hashed_password)
    print("User saved! ..not really")
    return user_in_db


@app.post("/user/", response_model=UserOut)
async def create_user(user_in: UserIn):
    user_saved = fake_save_user(user_in)

├── concurrent/                 # Async patterns (Deferred/Promise)
└── util/                      # Utilities
```

### Key Design Patterns

- **Builder**: SuggesterBuilder, SuggestRequestBuilder
- **Facade**: Suggester (main entry point)
- **Composite**: NormalizerChain, ReadingConverterChain
- **Strategy**: Normalizer, ReadingConverter, ContentsParser
- **Deferred/Promise**: Async operations

### Index Alias Strategy

///

/// tip | Порада

Якщо Вам потрібно викликати `async`-функції у ваших тестах, окрім відправлення запитів до FastAPI-застосунку (наприклад, асинхронні функції роботи з базою даних), перегляньте [Асинхронні тести](../advanced/async-tests.md){.internal-link target=_blank} у розширеному керівництві.

///

## Розділення тестів

//// tab | Python 3.9+

```Python hl_lines="1"
async def needy_dependency(fresh_value: Annotated[str, Depends(get_value, use_cache=False)]):
    return {"fresh_value": fresh_value}
```

////

//// tab | Python 3.9+ без Annotated

/// tip | Подсказка

Предпочтительнее использовать версию с аннотацией, если это возможно.

///

```Python hl_lines="1"

	clnts := newBootstrapRESTClients(endpointServerPools, gm)
	var onlineServers int
	var offlineEndpoints []error
	var incorrectConfigs []error
	var retries int
	var mu sync.Mutex
	for onlineServers < len(clnts)/2 {
		var wg sync.WaitGroup
		wg.Add(len(clnts))
		onlineServers = 0
		for _, clnt := range clnts {
			go func(clnt *bootstrapRESTClient) {
				defer wg.Done()

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package browser

import (
	"fmt"
	"strconv"
	"sync"

	"github.com/minio/minio/internal/config"
	"github.com/minio/pkg/v3/env"
)

// Browser sub-system constants
const (
	// browserCSPPolicy setting name for Content-Security-Policy response header value

	"errors"
	"fmt"
	"net/http"
	"net/url"
	"path"
	"strings"
	"sync"
)

// Token - parses the output from IDP id_token.
type Token struct {
	AccessToken string `json:"access_token"`
	Expiry      int    `json:"expires_in"`
}

// KeycloakProvider implements Provider interface for KeyCloak Identity Provider.
type KeycloakProvider struct {
	sync.Mutex

	oeConfig DiscoveryDoc
	client   http.Client
	adminURL string

class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None
    tags: set[str] = set()


@app.post("/items/", response_model=Item, summary="Create an item")
async def create_item(item: Item):
    """
    Create an item with all the information:

    - **name**: each item must have a name
    - **description**: a long description
    - **price**: required

package clause_test

import (
	"sync"
	"testing"

	"gorm.io/gorm"
	"gorm.io/gorm/clause"
	"gorm.io/gorm/schema"
	"gorm.io/gorm/utils/tests"
)

func TestJoin(t *testing.T) {
	results := []struct {
		name string
		join clause.Join
		sql  string
	}{
		{
			name: "LEFT JOIN",
			join: clause.Join{
				Type:  clause.LeftJoin,
				Table: clause.Table{Name: "user"},
				ON: clause.Where{

    name: str
    description: Union[str, None] = None
    price: float
    tax: Union[float, None] = None
    tags: set[str] = set()


@app.post("/items/", response_model=Item, summary="Create an item")
async def create_item(item: Item):
    """
    Create an item with all the information:

    - **name**: each item must have a name
    - **description**: a long description
    - **price**: required