package junit3_tdtc.tutorial_0_basic;
import com.google.common.testing.TearDown;
import com.google.common.testing.TearDownAccepter;
import com.google.common.testing.junit3.TearDownTestCase;
import com.google.guiceberry.GuiceBerryModule;
import com.google.guiceberry.junit3.AutoTearDownGuiceBerry;
import com.google.inject.AbstractModule;
import com.google.inject.Inject;
public class Example4UseTearDownAccepterTest extends TearDownTestCase {
@Inject
private TearDownAccepter tearDownAccepter;
private int firstItem;
private int secondItem;
private boolean throwExceptionOnSecondItemDeleter = false;
@Override
public void setUp() throws Exception {
super.setUp();
AutoTearDownGuiceBerry.setUp(this, Env.class);
tearDownAccepter.addTearDown(new FirstItemResetter());
firstItem = 1;
tearDownAccepter.addTearDown(new SecondItemResetter());
secondItem = 2;
}
public void testOne() throws Exception {
assertEquals(1, firstItem);
assertEquals(2, secondItem);
}
public void testTwoFailsWithException() throws Exception {
assertEquals(1, firstItem);
throwExceptionOnSecondItemDeleter = true;
assertEquals(2, secondItem);
}
private class FirstItemResetter implements TearDown {
public void tearDown() {
System.out.println("first item delete");
firstItem = 0;
}
}
private class SecondItemResetter implements TearDown {
public void tearDown() throws Exception {
System.out.println("second item delete");
// This assertion passes because TearDownAccepter guarantees to call
// tearDowns in a reverse order. Since setUp adds SecondItemResetter after
// FirstItemResetter, the first item still has not been cleared.
assertEquals(1, firstItem);
if (throwExceptionOnSecondItemDeleter) {
// We'll simulate a situation where a tear down goes wrong -- like getting
// an exception trying to close a File or DB connection or whatever.
throw new Exception("Let's say something went wrong here.");
} else {
secondItem = 0;
}
}
}
public static final class Env extends AbstractModule {
@Override
protected void configure() {
install(new GuiceBerryModule());
}
}
}