@Test
@UI
public void testOtherObservablesPreservedWhenOptionInvalid() throws Exception {
ITypedObservableValue<Instrument> instrument =
TypedObservableValueDecorator.create(Instrument.class);
Instrument option = new Option("ABC", "200910", BigDecimal.ONE, OptionType.Put);
instrument.setValue(option);
OptionObservable optionObservable = new OptionObservable(instrument);
ImmutableList<IObservableValue> children =
ImmutableList.<IObservableValue>of(
optionObservable.observeSymbol(),
optionObservable.observeExpiry(),
optionObservable.observeStrikePrice(),
optionObservable.observeOptionType());
for (IObservableValue observable : children) {
Object value = observable.getValue();
observable.setValue(null);
assertThat(instrument.getValue(), nullValue());
for (IObservableValue other : children) {
if (other != observable) {
assertThat(other.getValue(), not(nullValue()));
}
}
observable.setValue(value);
assertThat(instrument.getTypedValue(), is(option));
}
}
public TestTemplate() {
ITypedObservableValue<Instrument> instrument =
TypedObservableValueDecorator.create(Instrument.class);
Option option = new Option(mSymbol, mExpiry, mStrike, mType);
instrument.setValue(option);
OptionObservable optionObservable = new OptionObservable(instrument);
ITypedObservableValue<T> child = observeChild(optionObservable);
assertThat(child.getTypedValue(), is(get(option)));
/*
* Change the parent instrument's value.
*/
change();
Option previous = option;
option = new Option(mSymbol, mExpiry, mStrike, mType);
assertThat(option, not(previous));
instrument.setValue(option);
assertThat(child.getTypedValue(), is(get(option)));
/*
* Make the parent instrument null.
*/
instrument.setValue(null);
assertThat(child.getTypedValue(), nullValue());
/*
* Set invalid instrument.
*/
instrument.setValue(option);
assertThat(child.getTypedValue(), is(get(option)));
instrument.setValue(new Equity("X"));
assertThat(child.getTypedValue(), nullValue());
/*
* Change the value on the child.
*/
instrument.setValue(option);
child.setValue(changeAgain());
previous = option;
option = new Option(mSymbol, mExpiry, mStrike, mType);
assertThat(option, not(previous));
assertThat(instrument.getTypedValue(), is((Instrument) option));
/*
* Make the child null.
*/
child.setValue(null);
assertThat(instrument.getTypedValue(), nullValue());
/*
* Subclasses can extend.
*/
additionalTests(instrument, child);
/*
* Dispose parent.
*/
instrument.dispose();
assertTrue(child.isDisposed());
}