/** Tests finding index of registered and unregistered guides. */
public void testIndexOf() {
IGuide guide1 = new StandardGuide();
guide1.setTitle("1");
set.add(guide1);
assertEquals("Wrong index.", 0, set.indexOf(guide1));
assertEquals("Wrong index.", -1, set.indexOf(new StandardGuide()));
}
/** Tests handling of incorrect input for index finding method. */
public void testIndexOfFail() {
try {
set.indexOf(null);
fail("Guide should be specified. NPE is expected.");
} catch (NullPointerException e) {
// Expected
}
}