@Test
public void getInterceptionHandler_whenCallIsNotRecognized_shouldReturnDoNothingHandler()
throws Exception {
MethodSignature methodSignature = MethodSignature.parse("java/lang/Object/unknownMethod()V");
Function<Object, Object> handler = shadowWrangler.getInterceptionHandler(methodSignature);
assertThat(handler).isNotNull().isSameAs(ShadowWrangler.DO_NOTHING_HANDLER);
assertThat(handler.call(null)).isNull();
}
@Test
public void
getInterceptionHandler_whenInterceptingElderOnLinkedHashMap_shouldReturnNonDoNothingHandler()
throws Exception {
MethodSignature methodSignature =
MethodSignature.parse("java/util/LinkedHashMap/eldest()Ljava/lang/Object");
Function<Object, Object> handler = shadowWrangler.getInterceptionHandler(methodSignature);
assertThat(handler).isNotSameAs(ShadowWrangler.DO_NOTHING_HANDLER);
}
@Test
public void intercept_elderOnLinkedHashMapHandler_shouldReturnEldestMemberOfLinkedHashMap()
throws Throwable {
LinkedHashMap<Integer, String> map = new LinkedHashMap<Integer, String>(2);
map.put(1, "one");
map.put(2, "two");
@SuppressWarnings("unchecked")
Map.Entry<Integer, String> result =
(Map.Entry<Integer, String>)
shadowWrangler.intercept(
"java/util/LinkedHashMap/eldest()Ljava/lang/Object;", map, null, getClass());
Map.Entry<Integer, String> eldestMember = map.entrySet().iterator().next();
assertThat(result).isEqualTo(eldestMember);
assertThat(result.getKey()).isEqualTo(1);
assertThat(result.getValue()).isEqualTo("one");
}
