checkNotNull(type);
    if (type instanceof TypeVariable) {
      return typeTable.resolve((TypeVariable<?>) type);
    } else if (type instanceof ParameterizedType) {
      return resolveParameterizedType((ParameterizedType) type);
    } else if (type instanceof GenericArrayType) {
      return resolveGenericArrayType((GenericArrayType) type);
    } else if (type instanceof WildcardType) {

        // Check inheritance chain
        assertTrue(exception instanceof CommandExecutionException);
        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);

        // Should be runtime exception (unchecked), not an Error

      // Put types estimated to be the most frequent first.
      if (value instanceof CharSequence) {
        return ((CharSequence) value).length() == 0;
      } else if (value instanceof Collection) {
        return ((Collection<?>) value).isEmpty();
      } else if (value instanceof Map) {
        return ((Map<?, ?>) value).isEmpty();
      } else if (value instanceof java.util.Optional) {

    if (cause instanceof Error) {
      throw new ExecutionError((Error) cause);
    } else if (cause instanceof RuntimeException) {
      throw new UncheckedExecutionException(cause);
    } else {
      throw new ExecutionException(cause);
    }
  }

  private void wrapAndThrowRuntimeExecutionExceptionOrError(Throwable cause) {
    if (cause instanceof Error) {

        // Test that GsaConfigException is an instance of FessSystemException
        GsaConfigException exception = new GsaConfigException("Test");

        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    public void test_serialization() {

    }

    public void test_inheritance() {
        // Test that SsoLoginException extends FessSystemException
        SsoLoginException exception = new SsoLoginException("Test");

        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);

 * either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
package org.codelibs.core.exception;

import static org.hamcrest.CoreMatchers.instanceOf;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.junit.Assert.assertThat;

import org.junit.Test;

/**
 * @author wyukawa
 *
 */

        assertTrue(exception instanceof UnsupportedSearchException);
        assertTrue(exception instanceof FessSystemException);
        assertTrue(exception instanceof RuntimeException);
        assertTrue(exception instanceof Exception);
        assertTrue(exception instanceof Throwable);
    }

    public void test_stackTrace() {

        QueryContext context = new QueryContext("test", false);
        QueryBuilder result = booleanQueryCommand.execute(context, booleanQuery, 1.0f);

        assertNotNull(result);
        assertTrue(result instanceof BoolQueryBuilder);

        BoolQueryBuilder boolResult = (BoolQueryBuilder) result;
        assertTrue(boolResult.hasClauses());
    }

    // Test execute method with non-BooleanQuery (should throw exception)

        QueryBuilder result = queryProcessor.execute(context, boostQuery, 1.0f);

        assertNotNull(result);
        assertTrue(result instanceof FuzzyQueryBuilder || result instanceof DefaultQueryBuilder || result instanceof DisMaxQueryBuilder);

        if (result instanceof FuzzyQueryBuilder) {
            FuzzyQueryBuilder fuzzyQueryBuilder = (FuzzyQueryBuilder) result;