CompositeStatusDetailIndicatorTest.java

package de.otto.edison.status.indicator;

import org.junit.Test;

import static de.otto.edison.status.domain.Status.ERROR;
import static de.otto.edison.status.domain.Status.OK;
import static de.otto.edison.status.domain.StatusDetail.statusDetail;
import static java.util.Arrays.asList;
import static java.util.Collections.emptyList;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.contains;
import static org.hamcrest.Matchers.is;

public class CompositeStatusDetailIndicatorTest {

    @Test(expected = IllegalArgumentException.class)
    public void shouldNotAcceptEmptyListOfDelegates() {
        new CompositeStatusDetailIndicator("foo", emptyList());
    }

    @Test
    public void shouldReturnStatusDetailOfSingleIndicator() {
        final StatusDetailIndicator indicator = new MutableStatusDetailIndicator(statusDetail("bar", ERROR, "a message"));
        final CompositeStatusDetailIndicator composite = new CompositeStatusDetailIndicator("foo", asList(indicator));
        assertThat(composite.statusDetail(), is(statusDetail("bar", ERROR, "a message")));
    }

    @Test
    public void shouldAggregateStatusDetails() {
        final StatusDetailIndicator first = new MutableStatusDetailIndicator(statusDetail("firstIndicator", OK, "a message"));
        final StatusDetailIndicator second = new MutableStatusDetailIndicator(statusDetail("secondIndicator", ERROR, "a message"));
        final CompositeStatusDetailIndicator composite = new CompositeStatusDetailIndicator("foo", asList(first, second));
        assertThat(composite.statusDetail(), is(statusDetail("foo", ERROR, "Aggregated status of 2 delegate indicators")));
    }

    @Test
    public void shouldProvideStatusDetails() {
        final StatusDetailIndicator first = new MutableStatusDetailIndicator(statusDetail("firstIndicator", OK, "a message"));
        final StatusDetailIndicator second = new MutableStatusDetailIndicator(statusDetail("secondIndicator", ERROR, "a message"));
        final CompositeStatusDetailIndicator composite = new CompositeStatusDetailIndicator("foo", asList(first, second));
        assertThat(composite.statusDetails(), contains(
                statusDetail("firstIndicator", OK, "a message"),
                statusDetail("secondIndicator", ERROR, "a message"))
        );
    }

}