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 *  to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.datasource;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.mock;

import java.sql.SQLException;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;

public class PoolDataSourceManagerTest {

	private UnmanagedPoolingDataSource mockPoolingDataSource;
	private PoolingDataSourceManager dataSourceManager;

	@Before
	public void before() throws SQLException {
		this.mockPoolingDataSource = mock(UnmanagedPoolingDataSource.class);
		this.dataSourceManager = new PoolingDataSourceManager(mockPoolingDataSource, 100);
	}

	@After
	public void after() {
		dataSourceManager.shutdown();
	}

	@Test
	public void testRun_Manage() throws InterruptedException {

		final int[] counter = new int[1];

		doAnswer(new Answer<Object>() {
			@Override
			public Object answer(InvocationOnMock invocation) throws Throwable {
				counter[0]++;
				return null;
			}
		}).when(mockPoolingDataSource).managePool();

		dataSourceManager.start();

		// we can't predict the number of 'managePool' invocations, but it
		// should be incrementing as the time goes

		int c0 = counter[0];
		assertEquals(0, c0);
		Thread.sleep(300);

		int c1 = counter[0];
		assertTrue(c1 > c0);

		Thread.sleep(300);

		int c2 = counter[0];
		assertTrue(c2 > c1);
	}
}