public void testToString() throws Exception {
StackKeyedObjectPool pool = new StackKeyedObjectPool(new SimpleFactory());
assertNotNull(pool.toString());
Object obj = pool.borrowObject("key");
assertNotNull(pool.toString());
pool.returnObject("key", obj);
assertNotNull(pool.toString());
}
/**
* Verifies maxSleeping contract: When returnObject triggers maxSleeping exceeded, the bottom
* (oldest) instance in the pool is destroyed to make room for the newly returning instance, which
* is pushed onto the idle object stack.
*/
public void testRemoveOldest() throws Exception {
pool._maxSleeping = 2;
Object obj0 = pool.borrowObject("");
Object obj1 = pool.borrowObject("");
Object obj2 = pool.borrowObject("");
pool.returnObject("", obj0); // Push 0 onto bottom of stack
pool.returnObject("", obj1); // Push 1
pool.returnObject("", obj2); // maxSleeping exceeded -> 0 destroyed, 2 pushed
assertEquals("2", pool.borrowObject("")); // 2 was pushed on top
assertEquals("1", pool.borrowObject("")); // 1 still there
assertEquals("3", pool.borrowObject("")); // New instance created (0 is gone)
}
public void testIdleCap() throws Exception {
Object[] active = new Object[100];
for (int i = 0; i < 100; i++) {
active[i] = pool.borrowObject("");
}
assertEquals(100, pool.getNumActive(""));
assertEquals(0, pool.getNumIdle(""));
for (int i = 0; i < 100; i++) {
pool.returnObject("", active[i]);
assertEquals(99 - i, pool.getNumActive(""));
assertEquals((i < 8 ? i + 1 : 8), pool.getNumIdle(""));
}
}
public void testCloseBug() throws Exception {
{
Object obj0 = pool.borrowObject("");
Object obj1 = pool.borrowObject("");
assertEquals(2, pool.getNumActive(""));
assertEquals(0, pool.getNumIdle(""));
pool.returnObject("", obj1);
pool.returnObject("", obj0);
assertEquals(0, pool.getNumActive(""));
assertEquals(2, pool.getNumIdle(""));
}
{
Object obj0 = pool.borrowObject("2");
Object obj1 = pool.borrowObject("2");
assertEquals(2, pool.getNumActive("2"));
assertEquals(0, pool.getNumIdle("2"));
pool.returnObject("2", obj1);
pool.returnObject("2", obj0);
assertEquals(0, pool.getNumActive("2"));
assertEquals(2, pool.getNumIdle("2"));
}
pool.close();
}
