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package org.glassfish.jersey.tests.integration.jersey2878;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import javax.ws.rs.client.ClientRequestContext;
import javax.ws.rs.client.ClientResponseContext;
import javax.ws.rs.client.ClientResponseFilter;
import javax.ws.rs.core.Application;
import javax.ws.rs.core.Response;
import org.glassfish.jersey.client.ClientConfig;
import org.glassfish.jersey.test.JerseyTest;
import org.glassfish.jersey.test.external.ExternalTestContainerFactory;
import org.glassfish.jersey.test.spi.TestContainerException;
import org.glassfish.jersey.test.spi.TestContainerFactory;
import org.junit.Test;
import static org.junit.Assert.fail;
public class Jersey2878ITCase extends JerseyTest {
private List<InputStream> responseInputStreams = new ArrayList<>();
@Override
protected TestContainerFactory getTestContainerFactory() throws TestContainerException {
return new ExternalTestContainerFactory();
}
@Override
protected Application configure() {
return new TestApplication();
}
@Override
protected void configureClient(ClientConfig config) {
ClientResponseFilter trackInputStreams = new ClientResponseFilter() {
@Override
public void filter(ClientRequestContext requestContext, ClientResponseContext responseContext) throws IOException {
responseInputStreams.add(responseContext.getEntityStream());
}
};
config.register(trackInputStreams);
}
private static void consumeStreamFully(InputStream inputStream) throws IOException {
while (inputStream.read() != -1) {
//consume the stream fully
}
}
@Test
public void thisShouldWorkButFails() throws Exception {
InputStream stream = target("string").request().get(InputStream.class);
try {
consumeStreamFully(stream);
} finally {
stream.close();
}
try {
stream.read();
fail("Exception was not thrown when read() was called on closed stream! Stream implementation: " + stream.getClass());
} catch (IOException e) {
// this is desired
}
assertThatAllInputStreamsAreClosed();
}
@Test
public void thisWorksButIsReallyUgly() throws Exception {
Response response = target("string").request().get();
if (response.getStatusInfo().getFamily() != Response.Status.Family.SUCCESSFUL) {
throw new RuntimeException("We have to manually check that the response was successful");
}
InputStream stream = response.readEntity(InputStream.class);
try {
consumeStreamFully(stream);
} finally {
response.close();
}
try {
stream.read();
fail("Exception was not thrown when read() was called on closed stream! Stream implementation: " + stream.getClass());
} catch (IOException e) {
// this is desired
}
assertThatAllInputStreamsAreClosed();
}
@Test
public void thisAlsoFails() throws Exception {
Response response = target("string").request().get();
if (response.getStatusInfo().getFamily() != Response.Status.Family.SUCCESSFUL) {
throw new RuntimeException("We have to manually check that the response was successful");
}
InputStream stream = response.readEntity(InputStream.class);
try {
consumeStreamFully(stream);
} finally {
stream.close();
}
try {
stream.read();
fail("Exception was not thrown when read() was called on closed stream! Stream implementation: " + stream.getClass());
} catch (IOException e) {
// this is desired
}
assertThatAllInputStreamsAreClosed();
}
@Test
public void worksWithACast_ifYouKnowThatYouCanCast() throws Exception {
Response response = target("string").request().get();
if (response.getStatusInfo().getFamily() != Response.Status.Family.SUCCESSFUL) {
throw new RuntimeException("We have to manually check that the response was successful");
}
InputStream stream = (InputStream) response.getEntity();
try {
consumeStreamFully(stream);
} finally {
stream.close();
}
try {
stream.read();
fail("Exception was not thrown when read() was called on closed stream! Stream implementation: " + stream.getClass());
} catch (IOException e) {
// this is desired
}
assertThatAllInputStreamsAreClosed();
}
private void assertThatAllInputStreamsAreClosed() {
if (responseInputStreams.size() == 0) {
fail("no input stream to check");
}
for (InputStream stream : responseInputStreams) {
assertClosed(stream);
}
}
private void assertClosed(InputStream stream) {
try {
byte[] buffer = new byte[256];
stream.read(buffer); //it's not ignored — we're checking for the exception
fail("Stream is not closed! Stream implementation: " + stream.getClass());
} catch (IOException e) {
// an exception is desired
}
}
}