@Test
public void testSeveralProviders() {

    Date currentDate = new Date();
    List<X509CertRecord> records = new ArrayList<>();
    Mockito.when(hostnameResolver.isValidHostname(anyString())).thenReturn(true);
    // Configure 3 providers in property
    System.setProperty(ZTS_PROP_NOTIFICATION_CERT_FAIL_PROVIDER_LIST, "provider1, provider2, provider3");
    // Create 7 records, each in it's own domain (domain0, domain1... domain6)
    for (int i = 0; i < 7; ++i) {
        X509CertRecord record = getMockX509CertRecord(currentDate, i);
        records.add(record);
        NotificationTestsCommon.mockDomainData(i, dataStore);
    }
    // Set one record in provider1, two records in provider2 and three records in provider3
    records.get(0).setProvider("provider1");
    records.get(1).setProvider("provider2");
    records.get(2).setProvider("provider2");
    records.get(3).setProvider("provider3");
    records.get(4).setProvider("provider3");
    records.get(5).setProvider("provider3");
    // Set one record in a provider not configured in properties (shouldn't be retrieved)
    records.get(6).setProvider("providerNotInProperty");
    Mockito.when(instanceCertManager.getUnrefreshedCertsNotifications(eq(serverName), eq("provider1")))
            .thenReturn(records.subList(0, 1));
    Mockito.when(instanceCertManager.getUnrefreshedCertsNotifications(eq(serverName), eq("provider2")))
            .thenReturn(records.subList(1, 3));
    Mockito.when(instanceCertManager.getUnrefreshedCertsNotifications(eq(serverName), eq("provider3")))
            .thenReturn(records.subList(3, 6));
    Mockito.when(instanceCertManager.getUnrefreshedCertsNotifications(eq(serverName), eq("providerNotInProperty")))
            .thenReturn(records.subList(6, 7));
    CertFailedRefreshNotificationTask certFailedRefreshNotificationTask = new CertFailedRefreshNotificationTask(
            instanceCertManager,
            dataStore,
            hostnameResolver,
            userDomainPrefix,
            serverName,
            httpsPort);
    List<Notification> notifications = certFailedRefreshNotificationTask.getNotifications();
    assertEquals(6, notifications.size());
    notifications.sort(Comparator.comparing(notif -> notif.getDetails().get(NOTIFICATION_DETAILS_UNREFRESHED_CERTS)));
    // Assert one records for provider1:
    String expectedDetail = "service0;provider1;instanceID0;" + new Timestamp(currentDate.getTime()) + ";;hostName0";
    assertEquals(expectedDetail, notifications.get(0).getDetails().get(NOTIFICATION_DETAILS_UNREFRESHED_CERTS));
    // Assert two records for provider2:
    expectedDetail = "service1;provider2;instanceID1;" + new Timestamp(currentDate.getTime()) + ";;hostName1";
    assertEquals(expectedDetail, notifications.get(1).getDetails().get(NOTIFICATION_DETAILS_UNREFRESHED_CERTS));
    expectedDetail = "service2;provider2;instanceID2;" + new Timestamp(currentDate.getTime()) + ";;hostName2";
    assertEquals(expectedDetail, notifications.get(2).getDetails().get(NOTIFICATION_DETAILS_UNREFRESHED_CERTS));
    // Assert three records for provider3:
    expectedDetail = "service3;provider3;instanceID3;" + new Timestamp(currentDate.getTime()) + ";;hostName3";
    assertEquals(expectedDetail, notifications.get(3).getDetails().get(NOTIFICATION_DETAILS_UNREFRESHED_CERTS));
    expectedDetail = "service4;provider3;instanceID4;" + new Timestamp(currentDate.getTime()) + ";;hostName4";
    assertEquals(expectedDetail, notifications.get(4).getDetails().get(NOTIFICATION_DETAILS_UNREFRESHED_CERTS));
    expectedDetail = "service5;provider3;instanceID5;" + new Timestamp(currentDate.getTime()) + ";;hostName5";
    assertEquals(expectedDetail, notifications.get(5).getDetails().get(NOTIFICATION_DETAILS_UNREFRESHED_CERTS));
    System.clearProperty(ZTS_PROP_NOTIFICATION_CERT_FAIL_PROVIDER_LIST);
}