Function tst

tests/test_strings.rs:177–234

()

#[test]
fn tst() {
    let mut st = TST::default();
    // test len & empty
    assert!(st.is_empty());
    assert_eq!(0, st.len());

    let i = SHELLS_ST;
    let mut hm = HashMap::new();
    let a = extract_words(i);
    for (i, &s) in a.iter().enumerate() {
        hm.insert(s, i);
        // test put
        st.put(s, Some(i));
    }

    // test len & empty
    assert!(!st.is_empty());
    assert_eq!(7, st.len());

    for (&k, v) in hm.iter() {
        // test get & contains
        assert_eq!(st.get(k), Some(v));
        assert!(st.contains(k));
    }

    // test keys
    // TST keys contained in HashMap
    let keys = st.keys();
    assert_eq!(hm.keys().len(), keys.len());
    for k in keys.iter() {
        assert!(hm.contains_key(k.as_str()));
    }
    // HashMap keys contained in TST
    let keys = hm.keys();
    for &k in keys {
        assert!(st.contains(k));
    }

    // test keys_with_prefix
    let mut matches = st.keys_with_prefix("shor");
    assert_eq!(1, matches.len());
    assert_eq!(Some("shore"), matches.dequeue().as_deref());

    // test keys_that_match
    let mut matches = st.keys_that_match(".he.l.");
    assert_eq!(Some("shells"), matches.dequeue().as_deref());

    // test longest_prefix_of
    assert_eq!(Some("shells"), st.longest_prefix_of("shellsort"));
    assert_eq!(Some("she"), st.longest_prefix_of("shell"));
    assert_eq!(None, st.longest_prefix_of("quicksort"));

    // test delete
    assert!(st.contains("shells"));
    st.put("shells", None);
    assert_eq!(6, st.len());
    assert!(!st.contains("shells"));
}