public Collection<String> getActualDataSourceNames() {
        return routeUnits.stream().map(each -> each.getDataSourceMapper().getActualName()).collect(Collectors.toCollection(() -> new HashSet<>(routeUnits.size(), 1L)));
    }
@Test
    void assertGetActualDataSourceNames() {
        Collection<String> actual = singleRouteContext.getActualDataSourceNames();
        assertThat(actual.size(), is(1));
        assertThat(actual.iterator().next(), is(DATASOURCE_NAME_0));
        actual = multiRouteContext.getActualDataSourceNames();
        assertThat(actual.size(), is(2));
        Iterator<String> iterator = actual.iterator();
        assertThat(iterator.next(), is(DATASOURCE_NAME_0));
        assertThat(iterator.next(), is(DATASOURCE_NAME_1));
    }