assertEquals(2, index.size());
assertEquals(1, index2.size());
assertTrue(index.containsKey("abc"));
assertTrue(index.containsKey("xyz"));
assertTrue(index2.containsKey("uvw"));
assertFalse(index2.containsKey("abc"));
assertFalse(index2.containsKey("xyz"));
assertFalse(index.containsKey("uvw"));
}
private void populateIndex() {