/*
 * Copyright 2017, TeamDev Ltd. All rights reserved.
 *
 * Redistribution and use in source and/or binary forms, with or without
 * modification, must retain the above copyright notice and the following
 * disclaimer.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package io.spine.server.event;

import com.google.common.collect.ImmutableSet;
import com.google.common.testing.NullPointerTester;
import io.spine.core.EventClass;
import io.spine.core.EventEnvelope;
import org.junit.Test;

import java.util.Set;

/**
 * @author Alexander Yevsyukov
 */
public class DelegatingEventDispatcherShould {

    @Test
    public void pass_null_tolerance_test() {
        new NullPointerTester()
                .setDefault(EventDispatcherDelegate.class, new EmptyEventDispatcherDelegate())
                .testAllPublicStaticMethods(DelegatingEventDispatcher.class);
    }

    private static final class EmptyEventDispatcherDelegate
            implements EventDispatcherDelegate<String> {

        @Override
        public Set<EventClass> getEventClasses() {
            return ImmutableSet.of();
        }

        @Override
        public Set<String> dispatchEvent(EventEnvelope envelope) {
            // Do nothing.
            return ImmutableSet.of();
        }

        @Override
        public void onError(EventEnvelope envelope, RuntimeException exception) {
            // Do nothing.
        }
    }
}

@@ -1221,45 +1221,191 @@
 ort 
-org.junit.Test;%0A%0Aimport java.util.Set
+io.spine.server.command.TestEventFactory;%0Aimport org.junit.Test;%0A%0Aimport java.util.Set;%0A%0Aimport static io.spine.test.TestValues.newUuidValue;%0Aimport static org.junit.Assert.assertTrue
 ;%0A%0A/
@@ -1753,24 +1753,612 @@
 ss);%0A    %7D%0A%0A
+    @Test%0A    public void delegate_onError() %7B%0A        final EmptyEventDispatcherDelegate delegate = new EmptyEventDispatcherDelegate();%0A        final DelegatingEventDispatcher%3CString%3E delegatingDispatcher =%0A                DelegatingEventDispatcher.of(delegate);%0A%0A        final TestEventFactory factory = TestEventFactory.newInstance(getClass());%0A        EventEnvelope envelope = EventEnvelope.of(factory.createEvent(newUuidValue()));%0A%0A        delegatingDispatcher.onError(envelope, new RuntimeException(%22test delegating onError%22));%0A%0A        assertTrue(delegate.onErrorCalled());%0A    %7D%0A%0A
     private 
@@ -2459,24 +2459,64 @@
 %3CString%3E %7B%0A%0A
+        private boolean onErrorCalled;%0A%0A
         @Ove
@@ -2890,38 +2890,132 @@
             
-// Do nothing.
+onErrorCalled = true;%0A        %7D%0A%0A        private boolean onErrorCalled() %7B%0A            return onErrorCalled;
 %0A        %7D%0A 

Test delegating `onError()`