1474         assert!(m.is_empty());  in test_empty_iter()
1485             assert!(m.is_empty());  in test_lots_of_insertions()
1502                 assert!(!m.contains_key(&i));  in test_lots_of_insertions()
1507                 assert!(m.remove(&i).is_some());  in test_lots_of_insertions()
1510                     assert!(!m.contains_key(&j));  in test_lots_of_insertions()
1514                     assert!(m.contains_key(&j));  in test_lots_of_insertions()
1519                 assert!(!m.contains_key(&i));  in test_lots_of_insertions()
1528                 assert!(m.remove(&i).is_some());  in test_lots_of_insertions()
1531                     assert!(!m.contains_key(&j));  in test_lots_of_insertions()
1535                     assert!(m.contains_key(&j));  in test_lots_of_insertions()
1576         assert!(!m.is_empty());  in test_is_empty()
1577         assert!(m.remove(&1).is_some());  in test_is_empty()
1578         assert!(m.is_empty());  in test_is_empty()
1619         assert!(keys.contains(&1));  in test_keys()
1620         assert!(keys.contains(&2));  in test_keys()
1621         assert!(keys.contains(&3));  in test_keys()
1630         assert!(values.contains(&'a'));  in test_values()
1631         assert!(values.contains(&'b'));  in test_values()
1632         assert!(values.contains(&'c'));  in test_values()
1644         assert!(values.contains(&2));  in test_values_mut()
1645         assert!(values.contains(&4));  in test_values_mut()
1646         assert!(values.contains(&6));  in test_values_mut()
1652         assert!(m.get(&1).is_none());  in test_find()
1671         assert!(m1 != m2);  in test_eq()
1688         assert!(map_str == "{1: 2, 3: 4}" || map_str == "{3: 4, 1: 2}");  in test_show()