@Test
public void shouldCacheResultsForSubsequentQueries() throws Exception {
when(delegate.forName("hej")).thenReturn(lookup, lookup2);
Lookup first = factory.forName("hej");
Lookup second = factory.forName("hej");
assertThat(first == second, is(true));
}
@Test
public void shouldReturnDifferentForDifferentQueries() throws Exception {
when(delegate.forName("hej")).thenReturn(lookup);
when(delegate.forName("hopp")).thenReturn(lookup2);
Lookup first = factory.forName("hej");
Lookup second = factory.forName("hopp");
assertThat(first == second, is(false));
}
@Test
public void shouldReturnDifferentForDifferentThreads() throws Exception {
ExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
factory = new CachingLookupFactory(new SimpleLookupFactory());
Lookup first = factory.forName("hej");
Lookup second =
executorService
.submit(
new Callable<Lookup>() {
@Override
public Lookup call() throws Exception {
return factory.forName("hej");
}
})
.get();
assertThat(second, not(equalTo(first)));
}
@Test
public void shouldReturnResultsFromDelegate() throws Exception {
when(delegate.forName("a name")).thenReturn(lookup);
assertThat(factory.forName("a name"), equalTo(lookup));
}