void testReadString() throws Exception {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        DataOutputStream dos = new DataOutputStream(baos);

        // Write a valid string structure
        String testString = "TEST";
        int totalChars = testString.length();
        writeLittleEndianInt(dos, totalChars); // totalChars
        writeLittleEndianInt(dos, 0); // unusedChars

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.pac;

import jcifs.smb.SID;

/**
 * Represents a Security Identifier (SID) with associated attributes within a PAC structure.
 * This class encapsulates a SID and its attribute flags as used in Kerberos PAC data.
 */
public class PacSidAttributes {

    private final SID id;
    private final int attributes;

    /**

      return tensorflow::Status(absl::StatusCode::kFailedPrecondition,    \
                                "Expected initialized `" #STRUCT_NAME     \
                                "` structure with `struct_size` field "   \
                                "set to " #SIZE_VALUE_NAME                \
                                ". Found `struct_size` = 0.");            \

 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.pac;

/**
 * Structure representing the PAC_CREDENTIAL_TYPE record
 *
 * @author jbbugeau
 */
public class PacCredentialType {

    private static final int MINIMAL_BUFFER_SIZE = 32;

    private final byte[] credentialType;

        @DisplayName("Should write correct structure size")
        void testWriteBytesWireFormat() {
            byte[] buffer = new byte[100];
            int startIndex = 10;

            int bytesWritten = echoRequest.writeBytesWireFormat(buffer, startIndex);

            // Should write 4 bytes
            assertEquals(4, bytesWritten);

            // Should write structure size of 4

And your **FastAPI** application might also be composed of several files/modules, etc.

### **FastAPI** app file { #fastapi-app-file }

Let's say you have a file structure as described in [Bigger Applications](bigger-applications.md){.internal-link target=_blank}:

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

In the file `main.py` you have your **FastAPI** app:

 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.pac;

/**
 * Represents a Unicode string structure as used in PAC data.
 * This class encapsulates the metadata for a Unicode string including its length,
 * maximum length, and pointer to the actual string data.
 */
public class PacUnicodeString {

        assertEquals("1.3.6.1.4.1.311.2.2.10", SpnegoConstants.NTLMSSP_MECHANISM, "NTLMSSP_MECHANISM mismatch");
    }

    @Test
    @DisplayName("Interface structure is as expected")
    void interfaceStructure() {
        Class<?> c = SpnegoConstants.class;
        assertTrue(c.isInterface(), "SpnegoConstants must be an interface");

    }

    @Override
    protected void encodeWitnessParameters(NdrBuffer buf) throws NdrException {
        // Encode input parameters for WitnessRegister

        // Version (WITNESS_VERSION structure)
        if (version != null) {
            buf.enc_ndr_long(version.getMajorVersion());
            buf.enc_ndr_long(version.getMinorVersion());
        } else {

        @Test
        public void testGetTypeForFile() throws Exception {
            // Mocking underlying connection and info retrieval is complex.
            // This test focuses on the logic based on the URL structure.
            SmbFile file = new SmbFile("smb1://server/share/file.txt");
            // Without a real connection, getType relies on path parsing.