InternationalString is = new InternationalStringImpl();
is.addLocalizedString(usString);
is.addLocalizedString(ukString);
is.addLocalizedString(caString);
assertEquals(3, is.getLocalizedStrings().size());
is.removeLocalizedString(ukString);
Collection localizedStrings = is.getLocalizedStrings();
assertEquals(2, localizedStrings.size());
assertTrue(localizedStrings.contains(usString));
assertFalse(localizedStrings.contains(ukString));
assertTrue(localizedStrings.contains(caString));