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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.application;
import com.google.inject.AbstractModule;
import com.google.inject.Key;
import com.yahoo.jdisc.AbstractResource;
import com.yahoo.jdisc.ResourceReference;
import com.yahoo.jdisc.test.TestDriver;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertSame;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;
/**
* @author Simon Thoresen Hult
*/
public class ResourcePoolTestCase {
@Test
void requireThatAddReturnsArgument() {
TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
MyResource foo = new MyResource();
assertSame(foo, new ResourcePool(driver.newContainerBuilder()).add(foo));
assertTrue(driver.close());
}
@Test
void requireThatAddDoesNotRetainArgument() {
TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
MyResource foo = new MyResource();
assertEquals(1, foo.retainCount());
new ResourcePool(driver.newContainerBuilder()).add(foo);
assertEquals(1, foo.retainCount());
assertTrue(driver.close());
}
@Test
void requireThatAddCanBeUsedWithoutContainerBuilder() {
new ResourcePool().add(new MyResource());
}
@Test
void requireThatRetainReturnsArgument() {
TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
MyResource foo = new MyResource();
assertSame(foo, new ResourcePool(driver.newContainerBuilder()).retain(foo));
assertTrue(driver.close());
}
@Test
void requireThatRetainRetainsArgument() {
TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
MyResource foo = new MyResource();
assertEquals(1, foo.retainCount());
new ResourcePool(driver.newContainerBuilder()).retain(foo);
assertEquals(2, foo.retainCount());
assertTrue(driver.close());
}
@Test
void requireThatRetainCanBeUsedWithoutContainerBuilder() {
new ResourcePool().retain(new MyResource());
}
@Test
void requireThatGetReturnsBoundInstance() {
final MyResource foo = new MyResource();
TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi(new AbstractModule() {
@Override
protected void configure() {
bind(MyResource.class).toInstance(foo);
}
});
ResourcePool pool = new ResourcePool(driver.newContainerBuilder());
assertSame(foo, pool.get(MyResource.class));
assertSame(foo, pool.get(Key.get(MyResource.class)));
assertTrue(driver.close());
}
@Test
void requireThatGetDoesNotRetainArgument() {
final MyResource foo = new MyResource();
assertEquals(1, foo.retainCount());
TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi(new AbstractModule() {
@Override
protected void configure() {
bind(MyResource.class).toInstance(foo);
}
});
ResourcePool pool = new ResourcePool(driver.newContainerBuilder());
pool.get(MyResource.class);
assertEquals(1, foo.retainCount());
pool.get(Key.get(MyResource.class));
assertEquals(1, foo.retainCount());
assertTrue(driver.close());
}
@Test
void requireThatGetCanNotBeUsedWithoutContainerBuilder() {
ResourcePool pool = new ResourcePool();
try {
pool.get(MyResource.class);
fail();
} catch (NullPointerException e) {
}
try {
pool.get(Key.get(MyResource.class));
fail();
} catch (NullPointerException e) {
}
}
@Test
void requireThatResourcesAreReleasedOnDestroy() {
TestDriver driver = TestDriver.newSimpleApplicationInstanceWithoutOsgi();
ResourcePool pool = new ResourcePool(driver.newContainerBuilder());
MyResource foo = pool.add(new MyResource());
MyResource bar = pool.add(new MyResource());
MyResource baz = pool.add(new MyResource());
assertEquals(1, pool.retainCount());
assertEquals(1, foo.retainCount());
assertEquals(1, bar.retainCount());
assertEquals(1, baz.retainCount());
final ResourceReference secondPoolReference = pool.refer();
assertEquals(2, pool.retainCount());
assertEquals(1, foo.retainCount());
assertEquals(1, bar.retainCount());
assertEquals(1, baz.retainCount());
secondPoolReference.close();
assertEquals(1, pool.retainCount());
assertEquals(1, foo.retainCount());
assertEquals(1, bar.retainCount());
assertEquals(1, baz.retainCount());
pool.release();
assertEquals(0, pool.retainCount());
assertEquals(0, foo.retainCount());
assertEquals(0, bar.retainCount());
assertEquals(0, baz.retainCount());
assertTrue(driver.close());
}
@Test
void requireThatAutoCloseCallsRelease() throws Exception {
MyResource foo = new MyResource();
assertEquals(1, foo.retainCount());
try (ResourcePool pool = new ResourcePool()) {
pool.retain(foo);
assertEquals(2, foo.retainCount());
}
assertEquals(1, foo.retainCount());
}
private static class MyResource extends AbstractResource {
}
}
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