ThreadLocalInvokerTest.java

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package org.glassfish.jersey.servlet.internal;

import java.lang.reflect.Proxy;

import org.junit.Test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

/**
 * @author Michal Gajdos
 */
public class ThreadLocalInvokerTest {

    public static class CheckedException extends Exception {

    }

    public static interface X {

        public String checked() throws CheckedException;

        public String runtime();
    }

    @Test
    public void testIllegalState() {
        final ThreadLocalInvoker<X> tli = new ThreadLocalInvoker<>();

        final X x = (X) Proxy.newProxyInstance(this.getClass().getClassLoader(), new Class[]{X.class}, tli);

        boolean caught = false;
        try {
            x.checked();
        } catch (final Exception ex) {
            caught = true;
            assertEquals(IllegalStateException.class, ex.getClass());
        }
        assertTrue(caught);

        caught = false;
        try {
            x.runtime();
        } catch (final Exception ex) {
            caught = true;
            assertEquals(IllegalStateException.class, ex.getClass());
        }
        assertTrue(caught);
    }

    @Test
    public void testExceptions() {
        final ThreadLocalInvoker<X> tli = new ThreadLocalInvoker<>();

        final X x = (X) Proxy.newProxyInstance(this.getClass().getClassLoader(), new Class[]{X.class}, tli);

        tli.set(new X() {
            public String checked() throws CheckedException {
                throw new CheckedException();
            }

            public String runtime() {
                throw new RuntimeException();
            }
        });

        boolean caught = false;
        try {
            x.checked();
        } catch (final Exception ex) {
            caught = true;
            assertEquals(CheckedException.class, ex.getClass());
        }
        assertTrue(caught);

        caught = false;
        try {
            x.runtime();
        } catch (final Exception ex) {
            caught = true;
            assertEquals(RuntimeException.class, ex.getClass());
        }
        assertTrue(caught);
    }
}