Le `TestClient` est basé sur [HTTPX](https://www.python-httpx.org) et, heureusement, nous pouvons l'utiliser directement pour tester l'API.

## Exemple { #example }

Pour un exemple simple, considérons une structure de fichiers similaire à celle décrite dans [Applications plus grandes](../tutorial/bigger-applications.md) et [Tests](../tutorial/testing.md) :

```
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package config

import (
	"errors"
	"fmt"
	"net"
	"syscall"

	"github.com/minio/minio/internal/color"
)

// Err is a structure which contains all information
// to print a fatal error message in json or pretty mode
// Err implements error so we can use it anywhere
type Err struct {
	msg    string
	detail string
	action string
	hint   string

        dstIndex += 4;

        // Padding to align data to 8-byte boundary
        dstIndex += 4;

        // Write durable handle V2 request data (32 bytes total)
        // MS-SMB2 2.2.13.2.4 structure:
        SMBUtil.writeInt4((int) getTimeoutFor100Ns(), dst, dstIndex); // Timeout (4 bytes in 100-ns intervals)
        dstIndex += 4;

        SMBUtil.writeInt4(flags, dst, dstIndex); // Flags (4 bytes)

The `TestClient` is based on [HTTPX](https://www.python-httpx.org), and luckily, we can use it directly to test the API.

## Example { #example }

For a simple example, let's consider a file structure similar to the one described in [Bigger Applications](../tutorial/bigger-applications.md) and [Testing](../tutorial/testing.md):

```
.
├── app
│   ├── __init__.py
│   ├── main.py
│   └── test_main.py
```

# Access: http://localhost:8080/ (Admin: admin/admin)
```

### Code Formatting
```bash
mvn formatter:format    # Format code
mvn license:format      # Add license headers
```

## Directory Structure

```
src/main/java/org/codelibs/fess/
├── FessBoot.java              # Application entry point
├── Constants.java             # Central application constants
├── app/

```console
$ <font color="#4E9A06">fastapi</font> dev

  <span style="background-color:#009485"><font color="#D3D7CF"> FastAPI </font></span>  Starting development server 🚀

             Searching for package file structure from directories with
             <font color="#3465A4">__init__.py</font> files
             Importing from <font color="#75507B">/home/user/code/</font><font color="#AD7FA8">awesomeapp</font>

        assertTrue(exception instanceof java.io.Serializable);
    }

    @Test
    public void test_getMessage_withComplexCause() {
        // Test getMessage behavior with complex cause structure
        final Exception innerCause = new NullPointerException("NPE occurred");
        final Exception outerCause = new IllegalStateException("State error", innerCause);

        assertTrue(bytesWritten > 0);

        // Verify structure size field
        assertEquals(57, buffer[0]);
        assertEquals(0, buffer[1]);
    }

    @Test
    @DisplayName("Test writeBytesWireFormat with long path")
    void testWriteBytesWireFormatLongPath() {
        String longPath = "very\\long\\path\\to\\some\\deeply\\nested\\file\\in\\directory\\structure.txt";

///

## Use Cases { #use-cases }

You could use this to stream data from an **AI LLM** service, from **logs** or **telemetry**, or from other types of data that can be structured in **JSON** items.

/// tip

If you want to stream binary data, for example video or audio, check the advanced guide: [Stream Data](../advanced/stream-data.md).

///

It is likely that `v1alpha2` will be removed in one of the future Kubernetes releases to be able to develop `v1`.

### Structured logging graduate to Beta

Structured logging reached its Beta milestone. Most log messages from kubelet and kube-scheduler have been converted. Users are encouraged to try out JSON output or parsing of the structured text format and provide feedback on possible solutions for the open issues, such as handling of multi-line strings in log values.