## Install custom exception handlers { #install-custom-exception-handlers }

You can add custom exception handlers with [the same exception utilities from Starlette](https://www.starlette.dev/exceptions/).

Let's say you have a custom exception `UnicornException` that you (or a library you use) might `raise`.

And you want to handle this exception globally with FastAPI.

        when(response.getHeaderStart()).thenReturn(0);

        SMBProtocolDecodingException exception = assertThrows(SMBProtocolDecodingException.class,
                () -> response.readBytesWireFormat(buffer, bufferIndex), "Should throw exception for unknown quota info class");

        assertTrue(exception.getMessage().contains("Unknown quota info class"));
    }

    @Test

    private final int columnNumber;

    private final String message;

    private final Exception exception;

    private final Severity severity;

    /**
     * Creates a new problem with the specified message and exception.
     * Either {@code message} or {@code exception} is required
     *
     * @param message The message describing the problem, may be {@code null}.

 *
 */
public class ByteConversionUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testToByte() throws Exception {
        assertEquals(Byte.valueOf("100"), ByteConversionUtil.toByte("100"));
    }

    /**
     * @throws Exception
     */
    public void testToPrimitiveByte() throws Exception {
        assertEquals(100, ByteConversionUtil.toPrimitiveByte("100"));
    }

    /**

 */
public class DoubleConversionUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testToDouble() throws Exception {
        assertEquals(Double.valueOf("1000.5"), DoubleConversionUtil.toDouble("1,000.5"));
    }

    /**
     * @throws Exception
     */
    public void testToPrimitiveDouble() throws Exception {
        assertEquals(1000.5, DoubleConversionUtil.toPrimitiveDouble("1,000.5"), 0);
    }

 */
public class FloatConversionUtilTest extends TestCase {

    /**
     * @throws Exception
     */
    public void testToFloat() throws Exception {
        assertEquals(Float.valueOf("1000.5"), FloatConversionUtil.toFloat("1,000.5"));
    }

    /**
     * @throws Exception
     */
    public void testToPrimitiveFloat() throws Exception {
        assertEquals(1000.5, FloatConversionUtil.toPrimitiveFloat("1,000.5"), 0);
    }

 */
public class MimeTypeUtilTest {

    /**
     * @see org.junit.rules.ExpectedException
     */
    @Rule
    public ExpectedException exception = ExpectedException.none();

    /**
     * @throws Exception
     */
    @Test
    public void testGetFromStream() throws Exception {
        final String path = ClassUtil.getPackageName(this.getClass()).replaceAll("\\.", "/") + "/aaa.html";

    return "leave";
  }

  public final void testMutualExclusion() throws Exception {
    thread1.callAndAssertReturns(enter());
    thread2.callAndAssertBlocks(enter());
    thread1.callAndAssertReturns(leave());
    thread2.assertPriorCallReturns(enter());
  }

  public final void testTryEnter() throws Exception {
    thread1.callAndAssertReturns(true, tryEnter());

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.exception;

import org.codelibs.fess.mylasta.action.FessMessages;
import org.lastaflute.web.validation.VaMessenger;

/**
 * Exception thrown during SSO (Single Sign-On) processing with message code support.
 *
 * This exception is used to indicate errors that occur during SSO authentication

import junit.framework.TestCase;

import org.junit.Test;

/**
 * @author koichik
 */
public class ClassLoaderUtilTest {

    /**
     * @throws Exception
     */
    @Test
    public void testGetClassLoader() throws Exception {
        assertThat(ClassLoaderUtil.getClassLoader(Object.class), is(sameInstance(ClassLoaderUtil.class.getClassLoader())));