public MediaCopy findAvailableCopy(String id) {
List copies = findAllCopies(id);
for (int i = 0; i < copies.size(); i++) {
MediaCopy copy = (MediaCopy) copies.get(i);
if (!copy.isLoaned()) return copy;
}
return null;
}
public void testShouldSetCopyToBorrowed() throws Exception {
receipt = library.loan(copy, patron);
assertTrue(copy.isLoaned());
}