public void test_TreeMap_Constructor_Map() {
TreeMap treeMap = new TreeMap(tm);
assertEquals(tm.size(), treeMap.size());
assertEquals(tm.firstKey(), treeMap.firstKey());
assertEquals(tm.firstEntry(), treeMap.firstEntry());
assertEquals(tm.lastKey(), treeMap.lastKey());
assertEquals(tm.lastEntry(), treeMap.lastEntry());
assertEquals(tm.keySet(), treeMap.keySet());
String key = new Integer(100).toString();
assertEquals(tm.ceilingKey(key), treeMap.ceilingKey(key));