public void testModifyOnUnmodifiable() {
CharArraySet set = new CharArraySet(TEST_VERSION_CURRENT, 10, true);
set.addAll(Arrays.asList(TEST_STOP_WORDS));
final int size = set.size();
set = CharArraySet.unmodifiableSet(set);
assertEquals("Set size changed due to unmodifiableSet call", size, set.size());
String NOT_IN_SET = "SirGallahad";
assertFalse("Test String already exists in set", set.contains(NOT_IN_SET));
try {
set.add(NOT_IN_SET.toCharArray());
fail("Modified unmodifiable set");
} catch (UnsupportedOperationException e) {
// expected
assertFalse("Test String has been added to unmodifiable set", set.contains(NOT_IN_SET));
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try {
set.add(NOT_IN_SET);
fail("Modified unmodifiable set");
} catch (UnsupportedOperationException e) {
// expected
assertFalse("Test String has been added to unmodifiable set", set.contains(NOT_IN_SET));
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try {
set.add(new StringBuilder(NOT_IN_SET));
fail("Modified unmodifiable set");
} catch (UnsupportedOperationException e) {
// expected
assertFalse("Test String has been added to unmodifiable set", set.contains(NOT_IN_SET));
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try {
set.clear();
fail("Modified unmodifiable set");
} catch (UnsupportedOperationException e) {
// expected
assertFalse("Changed unmodifiable set", set.contains(NOT_IN_SET));
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try {
set.add((Object) NOT_IN_SET);
fail("Modified unmodifiable set");
} catch (UnsupportedOperationException e) {
// expected
assertFalse("Test String has been added to unmodifiable set", set.contains(NOT_IN_SET));
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
// This test was changed in 3.1, as a contains() call on the given Collection using the
// "correct" iterator's
// current key (now a char[]) on a Set<String> would not hit any element of the CAS and therefor
// never call
// remove() on the iterator
try {
set.removeAll(new CharArraySet(TEST_VERSION_CURRENT, Arrays.asList(TEST_STOP_WORDS), true));
fail("Modified unmodifiable set");
} catch (UnsupportedOperationException e) {
// expected
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try {
set.retainAll(new CharArraySet(TEST_VERSION_CURRENT, Arrays.asList(NOT_IN_SET), true));
fail("Modified unmodifiable set");
} catch (UnsupportedOperationException e) {
// expected
assertEquals("Size of unmodifiable set has changed", size, set.size());
}
try {
set.addAll(Arrays.asList(NOT_IN_SET));
fail("Modified unmodifiable set");
} catch (UnsupportedOperationException e) {
// expected
assertFalse("Test String has been added to unmodifiable set", set.contains(NOT_IN_SET));
}
for (int i = 0; i < TEST_STOP_WORDS.length; i++) {
assertTrue(set.contains(TEST_STOP_WORDS[i]));
}
}
