Example mock verification test snippet ... using Mockito in an AEM related unit test

MyJobConsumerTest.java

package net.thartm.someservice.jobs;

import static org.mockito.Matchers.any;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.util.List;

import org.apache.commons.lang3.StringUtils;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.event.jobs.Job;
import org.apache.sling.testing.mock.sling.ResourceResolverType;
import org.apache.sling.testing.mock.sling.junit.SlingContext;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.mockito.Mock;
import org.mockito.junit.MockitoJUnit;
import org.mockito.junit.MockitoRule;

import net.thartm.someservice.rollout.RolloutService;
import com.day.cq.wcm.api.Page;
import com.google.common.collect.Lists;

/**
 * Tests wether the rollout service has been called
 * @author thomas.hartmann@netcentric.biz
 * @since 12/2015
 */
public class MyJobConsumerTest {

    @Rule
    public final SlingContext context = new SlingContext(ResourceResolverType.RESOURCERESOLVER_MOCK);

    @Rule
    public MockitoRule mockitoRule = MockitoJUnit.rule();

    private MyJobConsumer consumer;

    @Mock
    private Page master;

    @Mock
    private Job job;

    @Mock
    private RolloutService rolloutServiceMock;

    @Before
    public void setUp() throws Exception {
        this.consumer = new MyJobConsumer();
        this.consumer.rolloutService = rolloutServiceMock;
    }

    @Test
    public void testTriggerLiveCopyProcess() throws Exception {
        final List<String> expectedLanguages = Lists.newArrayList("de", "en", "it");
        prepareJobMock("pageName", StringUtils.join(expectedLanguages, ","));

        this.consumer.triggerLiveCopyProcess(context.resourceResolver(), master, job);

        verify(rolloutServiceMock, times(1)).createSite(context.resourceResolver(), master, "pageName", expectedLanguages,
                MyJobConsumer.ROLLOUT_CONFIG);
    }

    @Test
    public void testTriggerLiveCopyProcessWithoutLanguages() throws Exception {
        prepareJobMock("pageName", null);

        this.consumer.triggerLiveCopyProcess(context.resourceResolver(), master, job);

        verify(rolloutServiceMock, times(1)).createSite(context.resourceResolver(), master, "pageName",
                MyJobConsumer.ROLLOUT_CONFIG);
    }

    @Test
    public void testTriggerLiveCopyProcessBrokenLanguages() throws Exception {
        prepareJobMock("pageName", "deenit");

        this.consumer.triggerLiveCopyProcess(context.resourceResolver(), master, job);

        verify(rolloutServiceMock, times(1)).createSite(context.resourceResolver(), master, "pageName",
                MyJobConsumer.ROLLOUT_CONFIG);
    }

    @Test
    public void testFailToTriggerLiveCopyProcess() throws Exception {
        prepareJobMock("", "whatever");

        this.consumer.triggerLiveCopyProcess(context.resourceResolver(), master, job);

        verify(rolloutServiceMock, never()).createSite(any(ResourceResolver.class), any(Page.class), any(String.class), any(List.class),
                any(String.class));
        verify(rolloutServiceMock, never()).createSite(any(ResourceResolver.class), any(Page.class), any(String.class),
                any(String.class));
    }

    public void prepareJobMock(final String pageName, final String languageProperty) {
        when(job.getProperty(MyJobConsumer.PROPERTY_MPC_NAME)).thenReturn(pageName);
        when(job.getProperty(MyJobConsumer.PROPERTY_LANGUAGES)).thenReturn(languageProperty);
    }
}