/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.felix.scr.integration;
import static org.junit.Assert.*;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Hashtable;
import java.util.List;
import junit.framework.TestCase;
import org.apache.felix.scr.integration.components.SimpleComponent;
import org.apache.felix.scr.integration.components.SimpleServiceImpl;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.ops4j.pax.exam.junit.JUnit4TestRunner;
import org.osgi.service.cm.Configuration;
import org.osgi.util.tracker.ServiceTracker;
@RunWith(JUnit4TestRunner.class)
public class MinimumCardinalityTest extends ComponentTestBase
{
private static final String pid = "MinimumCardinality";
static
{
descriptorFile = "/integration_test_min_cardinality.xml";
// uncomment to enable debugging of this test class
// paxRunnerVmOption = DEBUG_VM_OPTION;
COMPONENT_PACKAGE = COMPONENT_PACKAGE;
}
@Test
public void testMinCardinality() throws Exception
{
ServiceTracker<SimpleComponent, SimpleComponent> tracker = new ServiceTracker<SimpleComponent, SimpleComponent>(bundleContext, SimpleComponent.class, null);
tracker.open();
//configuration-policy require
assertNull(tracker.getService());
onePresent( tracker, null );
onePresent( tracker, -1 );
onePresent( tracker, 2 );
onePresent( tracker, "-1" );
onePresent( tracker, 'c' );
onePresent( tracker, "2" );
onePresent( tracker, new int[] {4, 0} );
onePresent( tracker, null );
configureOne(1);
required(tracker, 1);
onePresent( tracker, null );
getConfigurationAdmin().getConfiguration( pid, null ).delete();
delay();
assertNull(tracker.getService());
manyPresent( tracker, null );
manyPresent( tracker, -1 );
manyPresent( tracker, "-1" );
manyPresent( tracker, new int[] {-4, 0} );
manyPresent( tracker, null );
configureMany(1);
required(tracker, 1);
configureMany(5);
required(tracker, 5);
manyPresent( tracker, null );
}
private void required(ServiceTracker<SimpleComponent, SimpleComponent> tracker, int count)
{
delay();
List<SimpleServiceImpl> services = new ArrayList<SimpleServiceImpl>();
for (int i = 0; i < count; i++)
{
assertNull("Expected no tracked with " + i + " services present, count " + count, tracker.getService());
services.add(SimpleServiceImpl.create( bundleContext, String.valueOf( i ) ));
}
assertNotNull(tracker.getService());
for (SimpleServiceImpl service: services)
{
service.drop();
assertNull(tracker.getService());
}
}
private void onePresent(ServiceTracker<SimpleComponent, SimpleComponent> tracker, Object value) throws IOException
{
configureOne(value);
delay();
assertNotNull(tracker.getService());
assertEquals(1, tracker.getServices().length);
}
private void configureOne(Object value ) throws IOException
{
configureTarget( "one.cardinality.minimum", value );
}
private void manyPresent(ServiceTracker<SimpleComponent, SimpleComponent> tracker, Object value) throws IOException
{
configureMany(value);
delay();
assertNotNull(tracker.getService());
assertEquals(1, tracker.getServices().length);
}
private void configureMany(Object value ) throws IOException
{
configureTarget( "many.cardinality.minimum", value );
}
private void configureTarget(final String targetKey, Object value) throws IOException
{
Hashtable<String, Object> props = new Hashtable<String, Object>();
if ( value != null )
{
props.put( targetKey, value );
}
Configuration config = getConfigurationAdmin().getConfiguration( pid, null );
config.update(props);
}
}