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public void testAddAll_Basic() { Set added = new HashSet(); ISet set = newSet(); added.add("item1"); added.add("item2"); set.addAll(added); assertEquals(2, set.size()); } @Test public void testAddAll_whenAllElementsSame() {
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Set added = new HashSet(); ISet set = newSet(); for (int i = 1; i <= 10; i++) { added.add("item"); } set.addAll(added); assertEquals(1, set.size()); } @Test public void testAddAll_whenCollectionContainsNull() {
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Set added = new HashSet(); ISet set = newSet(); added.add("item1"); added.add(null); try { assertFalse(set.addAll(added)); } catch (NullPointerException e) { } assertEquals(0, set.size()); }