@Test
public void flattenImmediateDisposeThrewNPE() {
MyObject a = new MyObject("a");
from.add(a);
initForFlattenTest().dispose();
assertEquals("[a]", from.toString());
}
@Test
public void flattenRemoveWithoutAddThrewNPE() {
MyObject a = new MyObject("a");
from.add(a);
initForFlattenTest();
from.remove(a);
assertTrue(from.isEmpty());
}
@Test
public void sortInitial() {
from.add(new MyObject("a"));
from.add(new MyObject("c"));
from.add(new MyObject("b"));
createSortTransformer().transform(from, toList);
assertEquals("[a, b, c]", toList.toString());
}
@Test
public void flatten() {
Transformation<ObservableCollection<MyObject>, ObservableCollection<MyObject>> transformation =
initForFlattenTest();
MyObject a = new MyObject("a");
from.add(a);
from.remove(a);
transformation.dispose();
assertTrue(from.isEmpty());
}
@Test
public void filterHandling() {
Transformers.filter(IS_A).transform(from, to);
MyObject objectB = new MyObject("b");
from.add(new MyObject("a"));
from.add(objectB);
from.remove(objectB);
assertEquals("[a]", "" + to);
}
@Test
public void filterInitial() {
from.add(new MyObject("a"));
from.add(new MyObject("b"));
Transformers.filter(IS_A).transform(from, to);
assertEquals("[a]", "" + to);
}
private Transformation<ObservableCollection<MyObject>, ObservableCollection<MyObject>>
initForFlattenTest() {
to.add(new MyObject("b"));
to.add(new MyObject("c"));
Function<MyObject, ObservableCollection<MyObject>> selector =
new Function<MyObject, ObservableCollection<MyObject>>() {
@Override
public ObservableCollection<MyObject> apply(MyObject source) {
return to;
}
};
return Transformers.flatten(selector).transform(from, to);
}
@Test
public void flattenWithTransformer() {
Function<MyObject, ObservableCollection<String>> f =
new Function<MyObject, ObservableCollection<String>>() {
@Override
public ObservableCollection<String> apply(MyObject input) {
ObservableHashSet<String> s = new ObservableHashSet<>();
s.add(input.name.get() + "1");
s.add(input.name.get() + "2");
return s;
}
};
Transformer<ObservableCollection<String>, ObservableCollection<MyObject>> t =
Transformers.oneToOne(
new Function<String, MyObject>() {
@Override
public MyObject apply(String input) {
return new MyObject(input);
}
},
new Function<MyObject, String>() {
@Override
public String apply(MyObject input) {
return input.name.get();
}
});
Transformer<ObservableCollection<MyObject>, ObservableCollection<MyObject>> flatten =
Transformers.flatten(f, t);
from.add(new MyObject("a"));
flatten.transform(from, to);
assertTrue(to.size() == 2);
from.add(new MyObject("b"));
assertTrue(to.size() == 4);
}
@Test
public void sortWithTwoTransformsRegistrationDisposeBug() {
Transformer<ObservableCollection<MyObject>, ObservableList<MyObject>> trans =
createSortTransformer();
Transformation<ObservableCollection<MyObject>, ObservableList<MyObject>> transformation =
trans.transform(new ObservableArrayList<MyObject>());
trans.transform(from, toList);
transformation.dispose();
from.add(new MyObject("a"));
assertEquals("[a]", toList.toString());
}
public static <ItemT> ObservableSet<ItemT> toObservable(Set<ItemT> s) {
ObservableSet<ItemT> result = new ObservableHashSet<>();
result.addAll(s);
return result;
}