@Test
public void whenCreateClassToInstanceMap_thenCreated() {
final ClassToInstanceMap<Number> numbers = MutableClassToInstanceMap.create();
numbers.putInstance(Integer.class, 1);
numbers.putInstance(Double.class, 1.5);
assertEquals(1, numbers.get(Integer.class));
assertEquals(1.5, numbers.get(Double.class));
}
@Test
public void putAndGetInstance() {
// given
ClassToInstanceMap<Exception> map = MutableClassToInstanceMap.create();
// when
map.putInstance(RuntimeException.class, new RuntimeException());
map.putInstance(NullPointerException.class, new NullPointerException());
// then
assertThat(map.getInstance(RuntimeException.class), is(RuntimeException.class));
assertThat(map.getInstance(NullPointerException.class), is(NullPointerException.class));
}
@SuppressWarnings("unchecked")
@Override
public boolean processClass(final Class candidate) throws Exception {
if (DnsResolver.class.isAssignableFrom(candidate)
&& !Modifier.isAbstract(candidate.getModifiers())) {
try {
final DnsResolver resolver = (DnsResolver) candidate.newInstance();
resolvers.putInstance(candidate, resolver);
return true;
} catch (final Exception ex) {
LOG.error(
"Failed to create instance of DnsResolver: "
+ candidate
+ " because of: "
+ ex.getMessage());
}
}
return false;
}